JPH11254802A - Stencil printing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent as much as possible the occurrence of spoilage and thereby reduce printing cost by precluding blotting, setting off, or density irregularity from occurring in duplex printing. SOLUTION: This printing method is done such that by the use of a stencil printing device 1 including two plate cylinders 79, 80 and time measuring means to measure the lapse of time from the completion of the last time printing operation and capable of performing duplex printing, as the elapse of time, each plate cylinder 79, 80 is put in press contact therewith while printed masters 167, 168 are wrapped for a predetermined speed of rotation, and the printed masters 167, 168 are separated from each plate cylinder 79, 80; then new nonprocessed masters 33, 40 are wrapped around each cylinder 33, 40. In this state, each plate cylinder 79, 80 is brought in press contact therewith so as to be rotated by a predetermined speed of rotation, and the unprocessed masters 33, 40 are separated from each plate cylinder 79, 80, followed by wrapping new processed masters 33, 40 around each plate cylinder 79, 80 for the execution of printing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing method in which a printed image is obtained by exuding ink from a perforated stencil master and transferring it to printing paper, and more particularly, to one-step double-sided printing. The present invention relates to a stencil printing method using a stencil printing apparatus.

[0002]

2. Description of the Related Art A rotatable plate cylinder having a structure in which a plurality of mesh screens of a resin or metal mesh are wound around a porous support cylinder, and a thermoplastic resin film (thickness of 1 to 3 .mu.m).
A thermoplastic resin film of the master using a laminated master in which a porous support made of Japanese paper fiber, synthetic fiber, or a mixture of Japanese paper fiber and synthetic fiber is attached to the same. The surface is heated and perforated with a thermal head, then wound around a plate cylinder, ink is supplied to the inner peripheral surface of the plate cylinder from ink supply means provided inside the plate cylinder, and printing paper is pressed by pressing means such as a press roller. Digital heat-sensitive stencil printing, in which ink is extruded from a plate cylinder opening and a master perforation by transferring the ink onto a printing paper sheet by performing printing on the printing drum, is well known.

In recent years, in stencil printing, double-sided printing, in which printing is performed on both sides of a printing sheet, has become dominant in order to reduce consumption of the printing sheet. When performing this two-sided printing using a normal printing device, the printing paper loaded in the paper feeding unit is fed to the printing unit, and after printing on one side, the printing paper is turned over and fed back to the printing unit. However, by printing on the other side, you can obtain a double-sided printed matter,
Once the print paper has been ejected, set it again in the paper
There is a problem that work such as aligning printing paper after single-sided printing is troublesome.

[0004] In addition, since the printed matter after printing is not sufficiently dried with ink, if printing is immediately performed on the back surface, a conveying roller or a press roller is pressed against the image area, and the printed image becomes dirty. In most cases, printing on the back side is performed after several hours or more, especially if there is a solid image part, it is necessary to dry for a long time, and printing on the back side the next day Had been done.

As described above, in double-sided printing, the printing paper must be dried for a long time before printing on the back side of the printing paper, and two printing operations are performed. Takes twice as long as
There was a problem that it took too much time.

Therefore, a pair of plate cylinders are arranged facing each other,
A stencil printing apparatus capable of forming a print image on both sides of a printing paper in one process by pressing each plate cylinder against each other is disclosed in, for example, JP-A-6-71996 and JP-A-6-135111. It has been disclosed.

[0007]

In the above-described stencil printing apparatus, after the printing by the previous master (printed master) is completed, the stencil making of the next original is performed, and the new master is automatically placed on the plate cylinder. And is configured to proceed to the next printing. When printing is performed continuously in this manner, a sufficient amount of ink is held in the support cylinder of the plate cylinder and the mesh screen, so that ink can be reliably supplied even when a new master is wound. As a result, a good printed matter can be obtained from the first sheet.

However, after leaving the printing apparatus for a long time,
When printing is performed by winding a new master around the plate cylinder, the moisture in the ink held by the support cylinder of the plate cylinder and the mesh screen is reduced by the gap between the plate cylinder and the used It evaporates via the master or the like and its volume is reduced, and it takes time for the ink to permeate the porous support of the newly wound master and to exude from the perforated portion of the thermoplastic resin film.

The above-described ink in which water has evaporated has a reduced viscosity and is in a sticky state. Even if the ink oozes out of the perforated portion of the thermoplastic resin film and is transferred to printing paper, bleeding or set-off occurs. In particular, in double-sided printing in which images are formed on both sides of printing paper, good printed matter cannot be obtained until the ink whose viscosity has been reduced is consumed. However, there is a problem that several to several tens of sheets of waste paper are generated before the ink for supplying the ink is supplied.

[0010] Further, on the surface of the mesh screen after being left, there is uneven density of ink corresponding to the previous image. As a result, when a new master is wound and printed, there is a problem that density unevenness occurs in a printed image.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to reduce the printing cost by preventing the occurrence of bleeding, set-off or uneven density in double-sided printing to minimize the occurrence of waste paper. It is an object of the present invention to provide a printing method which can perform the following.

[0012]

According to the first aspect of the present invention,
A first plate cylinder having a first master support plate having flexibility; and a second master support plate having flexibility, having a peripheral surface close to the first plate cylinder. A first ink having a second plate cylinder provided and a first ink roller provided inside the first plate cylinder and rotatable by pressing against an inner peripheral surface of a first master support plate; Supply means, second ink supply means having a second ink roller provided inside the second plate cylinder and rotatable by pressing against the inner peripheral surface of the second master support plate, and printing end Clock means for measuring the time elapsed from the time, and one of the first and second ink rollers is connected to the first or second ink supply means by the first or second master support plate. One-step double-sided printing supported movably at a separated position away from the inner peripheral surface and at a press-contact position pressed against the inner peripheral surface A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from the state where the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. The cylinders are pressed against each other via the printed master and at least one of the plate cylinders is rotated a predetermined number of times, and the first and second masters are separated from the first and second master support plates after the printed master is peeled off from the first and second master support plates, respectively. A new blank master is wound around each master support plate, and the one or more ink rollers are moved from the separated position to the pressure contact position to expand the first or second master support plate. By Rukoto,
The first and second plate cylinders are pressed against each other via the unplated master and at least one plate cylinder is rotated a predetermined number of times, and then the unplated masters are respectively moved from the first and second master support plates. After the peeling, printing is performed by winding a new plate-making master on each of the first and second master support plates.

According to a second aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. A first ink roller that selectively occupies a first pressure contact position that presses against the inner peripheral surface;
A first ink supply means for supplying ink to the second plate cylinder, a second spaced position provided inside the second plate cylinder and separated from the inner peripheral surface of the second master support plate, and 2nd press
A second ink supply means for selectively occupying the pressure contact position of the first ink roller and a second ink roller facing the first ink roller, for supplying ink to the second plate cylinder, and a first ink roller First ink roller moving means for moving the second ink roller from the second separated position to the second pressed position, and a second ink roller moving means for moving the second ink roller from the second separated position to the second pressed position. A stencil printing apparatus using a stencil printing apparatus capable of performing one-step double-sided printing, comprising: When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from a state where the printed master is wound on the board,
Activating the first and second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and expand the first and second master support plates, respectively. Thereby, the first and second plate cylinders are pressed against each other via the printed master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is moved from the first and second master support plates. After peeling, respectively, new blank masters are wound around the first and second master support plates, respectively, and the first and second ink roller moving means are operated to bring the first and second ink rollers into the first and second ink rollers. By moving the first and second plate cylinders to each other via the unprinted master by moving the first and second master support plates to the second pressing position and expanding the first and second master support plates, respectively. At least one of the plate cylinders is rotated a predetermined number of times, and thereafter, the unprinted masters are separated from the first and second master support plates, respectively, and then the new masters are wound on the first and second master support plates, respectively. And printing is performed.

According to a third aspect of the present invention, a master is wound around an outer peripheral surface and is rotatable around its rotation axis, and a master is wound around an outer peripheral surface and around the rotation axis. A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are wound around the outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means. At least one of the plate cylinders is rotated a predetermined number of times, and the printed master is first and second rotated. After peeling off from the outer peripheral surface of the second plate cylinder, respectively, new blank masters are wound around the outer peripheral surfaces of the first and second plate cylinders, respectively, and the first and second plates are operated by operating the contact / separation means. The cylinders are pressed against each other via the unplated master, and at least one of the plate cylinders is rotated a predetermined number of times. Thereafter, the first unplated master is peeled from the outer peripheral surfaces of the first and second plate cylinders, and then the first cylinder is released. And printing is performed by winding a new plate-making master around the outer peripheral surface of the second plate cylinder.

According to a fourth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the first plate cylinder having a first master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, and rotatable by pressing against the inner peripheral surface of a first master support plate provided inside the first plate cylinder. A first ink supply unit having a first ink roller, and a second ink supply unit provided inside a second plate cylinder.
A second ink supply means having a second ink roller which can be rotated while being pressed against the inner peripheral surface of the master support plate, and a time measuring means for measuring an elapsed time from the end of printing, One of the second ink rollers is provided to the first or second ink supply means at a separated position away from the inner peripheral surface of the first or second master support plate, and at a pressing position at which the inner peripheral surface is pressed. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing supported movably on the first and second master support plates, in which printed masters are respectively wound. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from, the one ink roller is moved from the separation position to the pressure contact position to move the first or second master support plate. By swelling, After the first and second plate cylinders are pressed against each other via the printed master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed masters are separated from the first and second master support plates, respectively. The first and second plate cylinders are brought into pressure contact with each other by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. After rotating the plate cylinder a predetermined number of times, a new blank master is wound around each of the first and second master support plates, and the one ink roller is moved from the separation position to the pressure contact position to move the first ink roller to the pressing position. By bulging the first or second master support plate, the first and second plate cylinders are brought into pressure contact with each other via the blank master, and at least one of the plate cylinders is placed. After rotating the unprinted masters from the first and second master support plates, respectively, and winding the new masters on the first and second master support plates, and printing. It is characterized by.

According to a fifth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. A first ink roller that selectively occupies a first pressure contact position that presses against the inner peripheral surface;
A first ink supply means for supplying ink to the second plate cylinder, a second spaced position provided inside the second plate cylinder and separated from the inner peripheral surface of the second master support plate, and 2nd press
A second ink supply means for selectively occupying the pressure contact position of the first ink roller and a second ink roller facing the first ink roller, for supplying ink to the second plate cylinder, and a first ink roller First ink roller moving means for moving the second ink roller from the second separated position to the second pressed position, and a second ink roller moving means for moving the second ink roller from the second separated position to the second pressed position. A stencil printing apparatus using a stencil printing apparatus capable of performing one-step double-sided printing, comprising: When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from a state where the printed master is wound on the board,
Activating the first and second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and expand the first and second master support plates, respectively. Thereby, the first and second plate cylinders are pressed against each other via the printed master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is moved from the first and second master support plates. After peeling, respectively, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second ink rollers.
By moving the first and second master support plates to the first and second master support plates, respectively.
After pressing the plate cylinders of each other and rotating at least one of the plate cylinders a predetermined number of times, new blank masters are wound around the first and second master support plates, respectively, and the first and second ink rollers are rotated. By operating the moving means to move the first and second ink rollers to the first and second pressing positions, respectively, and to expand the first and second master support plates, respectively, the first and second ink rollers are expanded. And pressing at least one of the plate cylinders a predetermined number of times via the unplated master, and then peeling the unplated master from the first and second master support plates. And printing is performed by winding a new plate-making master on the second master support plate.

According to a sixth aspect of the present invention, a master is wound around an outer peripheral surface, and a first plate cylinder rotatable around a rotation axis thereof, and a master is wound around an outer peripheral surface, and is rotatable around the rotation axis. A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are wound around the outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means. At least one of the plate cylinders is rotated a predetermined number of times, and the printed master is first and second rotated. After peeling off from the outer peripheral surface of the second plate cylinder, the first and second plate cylinders are pressed against each other by operating the contact / separation means, and at least one of the plate cylinders is rotated a predetermined number of times. A new blank master is wound around the outer peripheral surface of the second plate cylinder, and the first and second plate cylinders are pressed against each other via the blank master by operating the contacting / separating means, and at least one of the blanks is pressed. After rotating the plate cylinder a predetermined number of times, the unprinted masters are peeled off from the outer peripheral surfaces of the first and second plate cylinders, respectively, and then the new plate-making masters are respectively mounted on the outer peripheral surfaces of the first and second plate cylinders. And printing is performed.

According to a seventh aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, and rotatable by pressing against the inner peripheral surface of a first master support plate provided inside the first plate cylinder. A first ink supply means having a first ink roller, and a second ink supply means provided inside a second plate cylinder.
A second ink supply means having a second ink roller which can be rotated while being pressed against the inner peripheral surface of the master support plate, and a time measuring means for measuring an elapsed time from the end of printing, One of the second ink rollers is provided to the first or second ink supply means at a separated position away from the inner peripheral surface of the first or second master support plate, and at a pressing position at which the inner peripheral surface is pressed. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing supported movably on the first and second master support plates, in which printed masters are respectively wound. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from, the one ink roller is moved from the separation position to the pressure contact position to move the first or second master support plate. By swelling, The first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is pressed from one of the first and second master support plates. After peeling, the first and second plate cylinders are printed by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. The master is pressed against each other via the master and at least one of the plate cylinders is rotated a predetermined number of times. After that, the printed master is peeled off from the other one of the first and second master support plates, and then the first and second masters are separated. The printing is performed by winding a new plate-making master on each master support plate.

According to the present invention, the first plate cylinder having a first master support plate having flexibility and the second master support plate having flexibility are provided. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. A first ink roller that selectively occupies a first press contact position that presses against the inner peripheral surface;
A first ink supply means for supplying ink to the second plate cylinder, a second spaced position provided inside the second plate cylinder and separated from the inner peripheral surface of the second master support plate, and 2nd press
A second ink supply means for selectively occupying the pressure contact position of the first ink roller and a second ink roller facing the first ink roller, for supplying ink to the second plate cylinder, and a first ink roller First ink roller moving means for moving the second ink roller from the second separated position to the second pressed position, and a second ink roller moving means for moving the second ink roller from the second separated position to the second pressed position. A stencil printing apparatus using a stencil printing apparatus capable of performing one-step double-sided printing, comprising: When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from a state where the printed master is wound on the board,
The first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressure contact positions, respectively, so that the first and second master support plates are expanded, respectively. Thereby, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, and the first and second master cylinders are rotated by a predetermined number of times. After peeling off the printed master, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressure contact positions, respectively, and the first and second ink rollers are moved. By bulging the master support plate, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times. Or and performing printing by winding each new stencil master on the first and second master support plate after peeling the printed master than the other one of the second master support plate.

According to a ninth aspect of the present invention, a master is wound on an outer peripheral surface and rotatable around a rotation axis of the first plate cylinder, and a master is wound on an outer peripheral surface and rotated around the rotation axis. , A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are respectively wound around outer peripheral surfaces of first and second plate cylinders. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, the first and second plate cylinders are pressed against each other via the printed master by operating the contacting / separating means. At least one of the plate cylinders is rotated a predetermined number of times, and the first or second plate cylinder is rotated. After peeling the printed master from one outer peripheral surface, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is pressed a predetermined number of times. Only after the printed master has been peeled off from the outer peripheral surface of the other one of the first and second plate cylinders.
And printing is performed by winding a new plate-making master on the outer peripheral surface of the plate cylinder.

According to a tenth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, and rotatable by pressing against the inner peripheral surface of a first master support plate provided inside the first plate cylinder. A first ink supply unit having a first ink roller, and a second ink roller provided inside the second plate cylinder and rotatable by pressing against an inner peripheral surface of a second master support plate. A second ink supply unit, and a timer unit for counting an elapsed time from the end of printing.
Either the first or second ink roller is the first ink roller.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from the state where the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. After the cylinders are pressed against each other via the printed master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates, of The first and second plate cylinders are pressed against each other via the printed master by moving the ink roller from the separation position to the pressing position to expand the first or second master support plate. At least one of the plate cylinders is rotated a predetermined number of times, and after removing the printed master from the other one of the first and second master support plates, new blank masters are respectively placed on the first and second master support plates. Winding, and moving the one of the ink rollers from the separated position to the press-contact position to form the first roller.
Alternatively, by inflating the second master support plate, the first and second plate cylinders are brought into pressure contact with each other via the blank master, and at least one of the plate cylinders is rotated a predetermined number of times. After the plate making master is peeled off from the first and second master supporting plates, respectively, new plate-making masters are wound around the first and second master supporting plates and printing is performed.

According to an eleventh aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. First ink supply means for selectively supplying an ink to a first plate cylinder, the first ink roller having a first ink roller selectively occupying a first pressure contact position in contact with the inner peripheral surface;
A first separation member provided inside the second plate cylinder and selectively occupying a second separation position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; Second ink supply means for supplying ink to the second plate cylinder having a second ink roller opposed to the first ink roller, and a first pressure contact position between the first ink roller and the first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure contact position, and time elapsed since the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein a printed master is wound on each of a first and a second master support plate. When the next printing is performed from When the interval exceeds an arbitrary predetermined time, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second press contact positions, respectively, and the first and second ink rollers are moved to the first and second pressing positions. By bulging the second master support plate, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling the printed master from one of the second master support plates, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressure contact positions. Respectively, and the first and second master support plates are respectively bulged so that the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is pressed. Was rotated by a predetermined number of times, and wound around the first or second first and each new un platemaking master to the second master support plate after separating the one the printed master than the other of the master support plate,
Activating the first and second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and expand the first and second master support plates, respectively. Thereby, the first and second plate cylinders are pressed against each other via the blank master, and at least one of the plate cylinders is rotated a predetermined number of times, and then the blank master is supported by the first and second masters. It is characterized in that printing is performed by winding new plate-making masters on the first and second master support plates after peeling off from the plates, respectively.

According to a twelfth aspect of the present invention, a master is wound on an outer peripheral surface and is rotatable around a rotation axis thereof, and a master is wound on an outer peripheral surface and is rotatable around the rotation axis. A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are wound around the outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means. At least one of the plate cylinders is rotated a predetermined number of times, and the first or second plate cylinder is rotated. After the printed master is peeled off from one of the outer peripheral surfaces, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is fixed to a predetermined position. After rotating the number of times and peeling the printed master from the outer peripheral surface of one of the first and second plate cylinders, new unprinted masters are wound around the outer peripheral surfaces of the first and second plate cylinders, respectively. Activating the contact / separation means to press the first and second plate cylinders together via the blank master, and rotate at least one of the blank cylinders a predetermined number of times; And after peeling from the outer peripheral surface of the second plate cylinder,
And printing is performed by winding a new plate-making master around the outer peripheral surface of the second plate cylinder.

According to a thirteenth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, and rotatable by pressing against the inner peripheral surface of a first master support plate provided inside the first plate cylinder. A first ink supply unit having a first ink roller and a second ink roller provided inside the second plate cylinder and rotatable by being pressed against an inner peripheral surface of a second master support plate. A second ink supply unit, and a timer unit for counting an elapsed time from the end of printing.
Either the first or second ink roller is the first ink roller.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from the state where the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. After the cylinders are pressed against each other via the printed master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates, of The first and second plate cylinders are pressed against each other via the printed master by moving the ink roller from the separation position to the pressing position to expand the first or second master support plate. At least one of the plate cylinders is rotated a predetermined number of times, and after removing the printed master from the other one of the first and second master support plates, new blank masters are respectively placed on the first and second master support plates. Winding, and moving the one of the ink rollers from the separated position to the press-contact position to form the first roller.
Alternatively, by inflating the second master support plate, the first and second plate cylinders are pressed against each other via the unmade master, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling off the unmade master from one of the two master support plates, the one ink roller is moved from the separation position to the pressure contact position to expand the first or second master support plate. Thereby, the first and second plate cylinders are pressed against each other via the blank master, and at least one of the plate cylinders is rotated a predetermined number of times, and thereafter, one of the first and second master support plates is rotated. After removing the blank master, the first
And printing is performed by winding a new plate-making master on the second master support plate.

According to a fourteenth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. First ink supply means for selectively supplying an ink to a first plate cylinder, the first ink roller having a first ink roller selectively occupying a first pressure contact position in contact with the inner peripheral surface;
A first separation member provided inside the second plate cylinder and selectively occupying a second separation position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; Second ink supply means for supplying ink to the second plate cylinder having a second ink roller opposed to the first ink roller, and a first pressure contact position between the first ink roller and the first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure contact position, and time elapsed since the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein a printed master is wound on each of a first and a second master support plate. When the next printing is performed from When the interval exceeds an arbitrary predetermined time, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second press contact positions, respectively, and the first and second ink rollers are moved to the first and second pressing positions. By bulging the second master support plate, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling the printed master from one of the second master support plates, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressure contact positions. Respectively, and the first and second master support plates are respectively bulged so that the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is pressed. Was rotated by a predetermined number of times, and wound around the first or second first and each new un platemaking master to the second master support plate after separating the one the printed master than the other of the master support plate,
Activating the first and second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and expand the first and second master support plates, respectively. Thereby, the first and second plate cylinders are pressed against each other via the blank master, and at least one of the plate cylinders is rotated a predetermined number of times, and the first and second master support plates are rotated by a predetermined number of times. After peeling off the unmade master, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second press contact positions, respectively, and the first and second ink roller are moved. By bulging the master support plate, the first and second plate cylinders are pressed against each other via the blank plate master, and at least one of the plate cylinders is rotated a predetermined number of times.
After that, the unprinted master is peeled off from one of the first and second master support plates, and then the new master is wound around each of the first and second master support plates to perform printing. And

According to a fifteenth aspect of the present invention, a master is wound around an outer peripheral surface, and a first plate cylinder rotatable around a rotation axis thereof, and a master is wound around an outer peripheral surface, and is rotatable around the rotation axis. A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are wound around the outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means. At least one of the plate cylinders is rotated a predetermined number of times, and the first or second plate cylinder is rotated. After the printed master is peeled off from one of the outer peripheral surfaces, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is fixed to a predetermined position. After rotating the number of times and peeling the printed master from the outer peripheral surface of one of the first and second plate cylinders, new unprinted masters are wound around the outer peripheral surfaces of the first and second plate cylinders, respectively. Operating the contact / separation means to press the first and second plate cylinders together via the unprinted master, and rotate at least one of the plate cylinders a predetermined number of times; After peeling off the unmade master from one of the other outer peripheral surfaces, the first and second plate cylinders are pressed against each other via the unmade master by operating the contacting / separating means, and at least one of the plate cylinders is pressed. Rotated a predetermined number of times , Then, the first
Alternatively, after the unprinted master is peeled off from one of the outer peripheral surfaces of the second plate cylinder, printing is performed by winding new perforated masters on the outer peripheral surfaces of the first and second plate cylinders, respectively. And

According to a sixteenth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, and rotatable by pressing against the inner peripheral surface of a first master support plate provided inside the first plate cylinder. A first ink supply unit having a first ink roller, and a second ink roller provided inside the second plate cylinder and rotatable by pressing against an inner peripheral surface of a second master support plate. A second ink supply unit, and a timer unit for counting an elapsed time from the end of printing.
Either the first or second ink roller is the first ink roller.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from the state where the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, after peeling the printed master from one of the first and second master support plates, the one ink roller is moved from the separation position to the pressure contact position. By inflating the first or second master support plate, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times. No. Or and performing printing by winding each new stencil master on the first and second master support plate after peeling the printed master than the other one of the second master support plate.

According to a seventeenth aspect of the present invention, there is provided a first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. First ink supply means for selectively supplying a first ink roller occupying a first pressure contact position in contact with the inner peripheral surface and supplying ink to the first plate cylinder;
A first separation member provided inside the second plate cylinder and selectively occupying a second separation position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; Second ink supply means for supplying ink to the second plate cylinder having a second ink roller opposed to the first ink roller, and a first pressure contact position between the first ink roller and the first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure contact position, and time elapsed since the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein a printed master is wound on each of a first and a second master support plate. When the next printing is performed from When the interval exceeds an arbitrary predetermined time, the printed master is peeled off from one of the first and second master support plates, and then the first and second ink roller moving means are operated to operate the first and second ink roller moving means. And moving the second ink roller to the first and second pressing positions, respectively.
By bulging the first and second master support plates, respectively, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times. Printing the printed master by peeling the printed master from one of the first and second master support plates, and then winding the new masters on the first and second master support plates, respectively. I do.

According to an eighteenth aspect of the present invention, there is provided a first plate cylinder having an outer peripheral surface on which a master is wound and rotatable around a rotation axis thereof, and a master on which an outer peripheral surface is wound with a master wound around the rotation axis. , A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are respectively wound around outer peripheral surfaces of first and second plate cylinders. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from, after the printed master is peeled off from the outer peripheral surface of one of the first and second plate cylinders, the contact and separation are performed. Actuating the means to press the first and second plate cylinders together via the printed master. And at least one of the plate cylinders is rotated a predetermined number of times, and then, after the printed master is peeled off from the other outer peripheral surface of either the first or second plate cylinder, the outer peripheral surfaces of the first and second plate cylinders It is characterized in that a new plate-making master is wound and printed in each case.

According to a nineteenth aspect of the present invention, a first plate cylinder having a first master support plate having flexibility and a second master support plate having flexibility are provided. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, and rotatable by pressing against the inner peripheral surface of a first master support plate provided inside the first plate cylinder. A first ink supply unit having a first ink roller, and a second ink roller provided inside the second plate cylinder and rotatable by pressing against an inner peripheral surface of a second master support plate. A second ink supply unit, and a timer unit for counting elapsed time from the end of printing.
Either the first or second ink roller is the first ink roller.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from the state where the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time has passed, the printed master is peeled off from the first and second master support plates, respectively, and then a new blank master is wound on one of the first and second master support plates. Then, by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate, the first and second plate cylinders are moved from the unprinted master to the unprinted master. Pressed against each other through And rotating at least one of the plate cylinders a predetermined number of times, and then, after peeling off the blank master, printing is performed by winding new masters on the first and second master support plates, respectively. And

According to a twentieth aspect of the present invention, a first plate cylinder having a first master support plate having flexibility and a second master support plate having flexibility are provided. A second plate cylinder arranged with its peripheral surface close to the plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate. First ink supply means for selectively supplying a first ink roller occupying a first pressure contact position in contact with the inner peripheral surface and supplying ink to the first plate cylinder;
A first separation member provided inside the second plate cylinder and selectively occupying a second separation position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; Second ink supply means for supplying ink to the second plate cylinder having a second ink roller opposed to the first ink roller, and a first pressure contact position between the first ink roller and the first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure contact position, and time elapsed since the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein a printed master is wound on each of a first and a second master support plate. When the next printing is performed from When the time exceeds an arbitrary predetermined time, after the printed master is separated from the first and second master support plates, a new blank master is placed on one of the first and second master support plates. Wrapped, first
And operating the second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and to swell the first and second master support plates, respectively. The first and second plate cylinders are pressed against each other via the unplated master, and at least one of the plate cylinders is rotated a predetermined number of times. It is characterized in that a new plate-making master is wound around each support plate and printing is performed.

According to a twenty-first aspect of the present invention, a master is wound around an outer peripheral surface and is rotatable around a rotation axis thereof, and a master is wound around an outer peripheral surface and is rotatable around the rotation axis. , A second plate cylinder rotatable in the first direction, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing the time elapsed from the end of printing. Stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are respectively wound around outer peripheral surfaces of first and second plate cylinders. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, after the printed master is separated from the outer peripheral surfaces of the first and second plate cylinders, the first or second printing is performed. A new blank master is wound around one of the outer peripheral surfaces of the plate cylinder, and the contact / separation means is operated. Then, the first and second plate cylinders are pressed against each other via the green plate master, and at least one of the plate cylinders is rotated a predetermined number of times. Thereafter, after the green plate master is peeled off, the first and second plate cylinders are separated. It is characterized in that printing is performed by winding a new plate-making master on the outer peripheral surface of the plate cylinder.

According to a twenty-second aspect of the present invention, a master is wound on an outer peripheral surface and is rotatable around a rotation axis thereof, and a master is wound on an outer peripheral surface and is rotatable around the rotation axis. A stencil printing method using a stencil printing apparatus, comprising: a second plate cylinder rotatable to; and timing means for counting an elapsed time from the end of printing;
When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed, the outer peripheral surfaces of the first and second plate cylinders are pressed against each other and at least one of the plate cylinders is rotated a predetermined number of times. Features.

According to a twenty-third aspect of the present invention, there is provided a stencil printing method according to any one of the first to twenty-second aspects, further comprising a step of pressing the first plate cylinder and the second plate cylinder against each other. Wherein the number of rotations of the first and / or second plate cylinder is controlled in accordance with the length of the elapsed time.

According to a twenty-fourth aspect of the present invention, in the stencil printing method according to the twenty-third aspect, the stencil printing apparatus further comprises a temperature detecting means for detecting a temperature inside the apparatus.
The number of rotations of the first and / or second plate cylinder at the time of press-contact between the plate cylinder and the second plate cylinder is corrected based on the temperature detected by the temperature detecting means.

According to a twenty-fifth aspect of the present invention, in the stencil printing method according to the twenty-fourth aspect, the stencil printing apparatus further comprises a humidity detecting means for detecting humidity inside the apparatus.
The number of rotations of the first and / or second plate cylinders at the time of press contact between the plate cylinder and the second plate cylinder is determined based on the temperature detected by the temperature detection unit and the humidity detected by the humidity detection unit. It is characterized by correction.

[0037]

FIG. 1 is a schematic view of a stencil printing apparatus 1 used in the first to seventh embodiments of the present invention. In FIG. 1, a stencil printing apparatus 1 includes an image reading unit 2, a paper feeding unit 3, a first plate making unit 4, a second plate making unit 5, a first plate discharging unit 6, and a second plate making unit 2.
It mainly comprises a plate discharging section 7, a sheet discharging section 8, a printing section 9, and a control section 10.

The image reading section 2 is provided on the upper part of the housing 23. The image reading unit 2 includes a contact glass 11 on which a document is placed, a pair of document transport rollers 12 and a document transport roller 13 for transporting the document, guide plates 14 and 15 for guiding the transported document, and a document along the contact glass 11. , A switching plate 17 for switching the discharge direction of the read original, reflection mirrors 18 and 19 for scanning and reading the original image, and a fluorescent lamp 20,
It mainly includes a lens 21 for focusing the scanned image, an image sensor 22 such as a CCD for processing the focused image, and the like.

The paper feed unit 3 is provided in the middle of the right side of the housing 23. The paper supply unit 3 includes a paper supply tray 24 on which the print papers P are stacked, a paper supply roller 25 for feeding the print papers P one by one, separation rollers 26 and 27, and a guide plate for guiding the print papers P to be fed. 28, 29, a pair of registration rollers 30 to be fed after the leading edge of the fed printing paper P is gripped and timed, and guide plates 31, 32 for guiding the printing paper P fed by the pair of registration rollers 30. It is mainly composed of

A first plate making section 4 is provided above the sheet feeding section 3. The first plate-making section 4 includes a master roll 34 formed by winding a master 33 formed by laminating a thermoplastic resin film and a porous support in a roll shape. It mainly comprises a thermal head 35, a platen roller 36 for transporting the master 33 while pressing it against the thermal head 35, a cutting means 37 for cutting the master 33, a pair of master transport rollers 38, 39 for transporting the master 33, and the like. .

The master roll 34 has its core 34a rotatably supported by a support member (not shown). The platen roller 36 is driven to rotate by a stepping motor (not shown). The cutting means 37 includes a movable blade 37a.
Rotates or moves up and down with respect to the fixed blade 37b.

The second plate-making section 5 is provided in the middle of the left side of the housing 23. The second plate-making section 5, like the first plate-making section 4, is formed by winding a master 40 formed by bonding a thermoplastic resin film and a porous support into a roll,
A master roll 41 having a core 41a rotatably supported by a support member (not shown), a thermal head 42, a platen roller 43 driven to rotate by a stepping motor (not shown), cutting means 44 comprising a movable blade 44a and a fixed blade 44b, a master. It is mainly composed of transport roller pairs 45, 46 and the like.

Above the second plate making section 5, a first plate discharging section 6 is provided. The first plate discharging section 6 mainly includes an upper plate discharging member 47, a lower plate discharging member 48, a plate discharging box 49, a compression plate 50, and the like.

The upper plate discharging member 47 is composed of a driving roller 51, a driven roller 52, and an endless belt 53. When the driving roller 51 rotates clockwise in FIG. . The lower plate discharging member 48 is also similar to the upper plate discharging member 47 in that the drive roller 5
4. The driving roller 54 is rotated in a counterclockwise direction in FIG. 1 to move the endless belt 56 in the direction of the arrow in the figure. Further, the lower plate discharging member 48 is provided movably by a moving means (not shown), and is selectively provided at a position shown in FIG. 1 and a position at which the outer peripheral surface of the drive roller 54 abuts the outer peripheral surface of a plate cylinder 79 described later. Positioned. Plate cylinder 79
A plate discharging box 49 for storing the printed master 167 peeled from the outer peripheral surface of the housing 23 is detachably provided to the housing 23. The compression plate 50 for pushing the printed master 167 into the plate discharge box 49 is supported by a vertically moving means (not shown) so as to be vertically movable.

At the lower right of the second plate making section 5, a second plate discharging section 7 is provided. Similarly to the first plate discharging section 6, the second plate discharging section 7 includes an upper plate discharging member 57, a lower plate discharging member 58, and a plate discharging box 5.
9, mainly composed of a compression plate 60 and the like.

The upper plate discharging member 57 and the lower plate discharging member 58 are, like the upper plate discharging member 47 and the lower plate discharging member 48, a driving roller 61, a driven roller 62, an endless belt 63, and a driving roller 64, a driven roller 65, an endless belt. 66, and each drive roller 61, 64
, The endless belts 63 and 66 move in the direction of the arrow in the figure. The lower plate discharging member 58 is movably provided by a moving means (not shown), and is selectively provided at a position shown in FIG. 1 and a position at which the outer peripheral surface of the drive roller 64 contacts the outer peripheral surface of the plate cylinder 80 described later. Positioned. Plate cylinder 80
The plate discharge box 59 for storing the printed master 168 peeled from the outer peripheral surface of the plate 23 is detachable from the housing 23, and the compression plate 60 is moved up and down by a lifting means (not shown).

A paper discharge section 8 is provided between the second plate making section 5 and the first plate discharge section 6. The paper discharge unit 8 includes peeling claws 67 and 6.
8, mainly comprising guide plates 69 and 70, a paper discharge conveying member 71, and a paper discharge tray 72.

The peeling claw 67 for peeling the printed printing paper P from the outer peripheral surface of the plate cylinder 79 is rotatably supported by a side plate (not shown) of the housing 23, and the tip thereof is connected to the outer peripheral surface of the plate cylinder 79. Are provided so as to be able to approach and separate from. Also,
The peeling claw 68 is also rotatably supported by a side plate (not shown) of the housing 23 similarly to the peeling claw 67, and its tip is a plate cylinder 80.
Are provided so as to be able to approach / separate from the outer peripheral surface. Guide plates 69 and 7 fixed to side plates (not shown) of the housing 23
0 guides the conveyance of the printed printing paper P peeled by the peeling claws 67 and 68. The paper discharging and conveying member 71 including the driving roller 73, the driven roller 74, the endless belt 75, and the suction fan 76 sucks the printing paper P onto the endless belt 75 by the suction force of the suction fan 76, and rotates the driving roller 73. The printing paper P is transported in the direction of the arrow in FIG. A paper discharge tray 72 on which the print paper P conveyed by the paper discharge conveyance member 71 is stacked has a pair of side fences movable in the width direction of the print paper P (a direction orthogonal to the conveyance direction of the print paper P). 77 and an end fence 78, and can be stored inside the housing 23 by folding.

The printing section 9 is provided at the center of the housing 23. The printing unit 9 mainly includes a plate cylinder 79 as a first plate cylinder, a plate cylinder 80 as a second plate cylinder, a plate cylinder driving unit 81, and the like.

The plate cylinder 79 has a support shaft 82 serving also as an ink supply pipe at its center, a porous support plate 83 as a first master support plate on the outer peripheral surface thereof, and a second support shaft 82 inside thereof. The first ink supply means 84 as the first ink supply means;
And an ink roller moving means 91 as an ink roller moving means.

As shown in FIG. 2, flanges 85, 85 having a symmetrical shape are provided near both ends of the support shaft 82.
It is rotatably mounted via bearings. As shown in FIGS. 3 and 4, the flange 85 has a flat portion 85 a on a part of the peripheral surface thereof, and a hole 85 b formed at the center thereof at a size larger than the outer shape of the support shaft 82. Are drilled. Further, a cam portion 85 c having a shape similar to the outer shape of the flange 85 is formed inside the flange 85.

As shown in FIG. 5, the flanges 85 and 85 have the same gear 8 inside the cam portions 85c and 85c.
7 and 142 are attached, respectively, and the flanges 85 and 85 are rotatably attached to the support shaft 82 by bearings 88 and 88 attached to the gears 87 and 142, respectively.

Each of the flanges 85, 85 is
a, 85a are attached to the support shaft 82 so as to be on the same plane, and as shown in FIG.
a stage 86 having a bent portion 86b at one end
Is attached by a method such as screwing. Two hook-shaped claws 86a, 86a are fixed on the stage 86 at a predetermined interval.

A porous support plate 83 is wound on the outer peripheral surface of each of the flanges 85, 85 in such a manner that both end portions thereof are in contact with each other. The porous support plate 83, which is made of a thin metal plate and has a large number of perforations on its surface,
a, 86a are provided at the positions corresponding to the holes 83a, 83a, and the holes 83a, 83a are respectively inserted into the claws 86a, 86a.
, And the rear end is sandwiched between the respective peripheral surfaces of the flanges 85 and 85 and the bent portion 86b. With this configuration,
When a stress is applied to the porous support plate 83 in the radial direction of the plate cylinder 79 from the inside of the plate cylinder 79, the peripheral surface thereof can easily bulge from the peripheral surface of the flange 85.

A mesh screen 89 is wound around the outer peripheral surface of the porous support plate 83 as shown in FIG. A thin plate-shaped mounting plate 89a is attached to one end of a mesh screen 89 made of resin or a metal net, and a thin plate-shaped movable plate 89b is attached to the other end. The mounting plate 89a is fixed on the stage 86 by screws or the like, and the movable plate 89b is movably mounted on the stage 86 via tension springs 89c, 89c. With this configuration, the mesh screen 89 can bulge out of the peripheral surface of the flange 85 similarly to the porous support plate 83.

On the stage section 86, a clamper 90 for holding the tip of the master 33 is provided. Clamper 90 whose base end is rotatably supported by stage section 86
Has a magnet (not shown) at its free end, and is provided so as to be magnetically attached to the stage 86. The clamper 90 is opened and closed by opening and closing means (not shown) when the plate cylinder 79 stops at a predetermined position.

As shown in FIGS. 5 and 7, an ink supply means 84 and an ink roller moving means 91
And are arranged. The ink supply means 84 includes the base 9
2, 92, the first support member 93, the second support member 94, the first
The ink roller moving means 91 is mainly composed of a support plate 97, a solenoid 98, a stopper 99 and the like.

The base 92 made of a plate material is attached to each of the flanges 8.
The two shafts 82 are arranged at predetermined intervals on the support shaft 82 located inside of the support shafts 5 and 85, and are fixed to the support shaft 82 by two mounting members 100 and 100, respectively.

A first support member 93 is provided between the bases 92. As shown in FIG. 8, the first support member 93 has ears 93a, 93a having holes 93b at both end portions thereof, and a swing shaft 102 at the center thereof.
The hole 93c through which is inserted and fixed is formed. The first support member 93 is rotatably supported by the bases 92, 92 by a support shaft 101 inserted between the holes 93b, 93b.

A tension spring 104 having each end fixed to the base 92 and the first support member 93 is stretched between the base 92 and the first support member 93. The first support member 93 is provided with a biasing force in the counterclockwise direction in FIG. 7 around the support shaft 101 by the biasing force of 104. The urging force of the tension spring 104 is set to be stronger than the urging forces of the tension springs 89c, 89c.

The second support member 94 includes bases 92 and 92
It is mainly composed of two side plates 94a, 94a arranged outside of the frame, a reinforcing member 94b connecting the side plates 94a, 94a, and a locking rod 94c provided between the side plates 94a, 94a. I have. The second support member 94 includes a reinforcing member 94b.
Are swingably supported by a swing shaft 102 by a bearing 94d disposed at the center of the shaft.

An ink roller 95 is provided between the side plates 94a, 94a. The ink roller 95 is rotatably supported on each of the side plates 94a, 94a by a support shaft 95a, and is driven to rotate in the same direction as the plate cylinder 79 by driving means (not shown). Also, at both ends of the support shaft 95a,
Cam followers 95b, 95b that are in contact with the cam portion 85c are provided. When the cam followers 95b, 95b abut against the convex portions of the cam portions 85c, 85c, the outer peripheral surface of the ink roller 95 is separated from the inner peripheral surface of the porous support plate 83, and the respective cam followers 95b, 95b are separated. The outer peripheral surfaces of the cam portions 85c, 85c are configured to protrude from the outer peripheral surfaces of the flanges 85, 85 when leaving the convex portions.

A doctor roller 96 is provided near the ink roller 95. The outer peripheral surface of the doctor roller 9 is disposed close to the outer peripheral surface of the ink roller 95.
Numeral 6 is rotatably supported by the side plates 94a, 94a, and is driven to rotate in the opposite direction to the ink roller 95 by driving means (not shown). In the vicinity of the outer peripheral surface of the ink roller 95 and the outer peripheral surface of the doctor roller 96,
The ink supplied through the support shaft 82 and an ink supply pipe 129 described later causes a wedge-shaped ink reservoir 96a to be formed.
Is formed.

A sensor 170 for detecting the amount of ink in the ink pool 96a is provided above the ink pool 96a. The sensor 170 is fixed to the side plate 94a by a fixing member (not shown).

The support plate 97 is fixed on a support shaft 82 located at a substantially central portion between the bases 92 by an attachment member (not shown) similar to the attachment member 100. Support plate 9
7, a reflection type sensor 152 for detecting the position of the ink roller 95 from the positions of the solenoid 98, the stopper 99, and the locking rod 94c is attached.

A stopper 99 having an L-shape, one end 99a of which is bent outward in a hook shape, and which can be engaged with the locking rod 94c, has its bent portion 99b supported by a support shaft 97 by a support shaft 97. And is connected to the plunger 98a of the solenoid 98 at an elongated hole 99c formed between one end 99a and the bent portion 99b. The stopper 99 is urged by urging means (not shown).
7, a clockwise rotational urging force is applied in FIG.

A plate cylinder 80 is provided below the plate cylinder 79. The plate cylinder 80 includes a support shaft 10 serving also as an ink supply pipe.
5 at its center, a porous support plate 106 serving as a second master support plate on its outer peripheral surface, and a second support plate inside thereof.
Ink supply means 107 as the second ink supply means and the second
And an ink roller moving means 108 as an ink roller moving means. The plate cylinder 80 is provided at a position where the outer peripheral surface of the porous support plate 106 is separated from the outer peripheral surface of the porous support plate 83 by a predetermined distance (about 2 to 3 mm).

Near both ends of the support shaft 105, the flange 8
Flange 10 having substantially the same shape and substantially symmetrical shape as 5
9, 110 are rotatably mounted via bearings. Compared to the flange 85, the flanges 109 and 110 are provided with a boss 10 inside the central portion thereof, as shown in FIG.
9a and 110b, and has a flat portion (not shown) and cam portions 109b and 110b.
In each of having the following. Each boss 10
9a and 110a are provided with gears 111 and 143 of the same shape, respectively.
10 is a support shaft 1 by a bearing 112 attached to the gear 143 and a bearing 113 attached to the flange 110.
05 are attached rotatably.

Each of the flanges 109 and 110 is connected to the flange 8.
Similarly to FIGS. 5 and 85, each flat portion is attached to the support shaft 105 so as to be coplanar, and a stage portion having a claw portion and a clamper 114 (not shown) is attached to each flat portion. Similarly to the plate cylinder 79, a porous support plate 106 and a mesh screen (not shown) are provided on the outer peripheral surfaces of the flanges 109 and 110.
It is wound so that it may protrude from the outer peripheral surface of 9,110.

The ink supply means 107 is provided inside the plate cylinder 80.
And ink roller moving means 108 are provided.
The ink supply means 107 mainly includes a base 115, an ink roller support member 116, an ink roller 117 as a second ink roller, and a doctor roller 118. The ink roller moving means 108 includes
19, a solenoid 120, a stopper 121 and the like.

As shown in FIG. 9, the base 115 has side walls 115a, 115a at both ends, and each of the side walls 115a, 115a has a substantially U-shape.
Grooves 115b into which the holes 05 can be fitted are formed. A bar-shaped reinforcing member 115c for preventing the side walls 115a, 115a from falling down is attached to the front end side between the side walls 115a, 115a.
A cutout 115d is formed at the center of the front end of 15. The base 115 is configured such that each groove 115b, 115b is
In a state fitted to the mounting member 05, the mounting member 100 is fixed by a mounting member (not shown) similar to the mounting member 100.

The ink roller supporting member 116 has two side plates 1 disposed outside the side walls 115a, 115a.
16a, 116a, a connecting rod 116b for connecting the side plates 116a, 116a, and a locking rod 116c provided between the side plates 116a, 116a. It is supported by. Also, the base 115 and the ink roller supporting member 1
The tension springs 12 fixed at their ends to the base 115 and the ink roller support member 116, respectively.
The support shaft 122 is attached to the ink roller support member 116 by the urging force of the tension spring 123.
7, a clockwise rotational urging force is applied in FIG. The urging force of the tension spring 123 is the tension spring 1
It is set so as to be stronger than the urging force of 04.

An ink roller 117 is provided between the side plates 116a, 116a. Ink roller 117
Is rotatably supported by the side plates 116a, 116a by a support shaft 117a, and is driven to rotate in the same direction as the plate cylinder 80 by driving means (not shown). Also, the support shaft 11
At both ends of 7a, cam followers 117b, 117b that are in contact with the cam portions 109b, 110b are provided.
The ink roller 117 is provided with each cam follower 117b, 1
When the projection 17b comes into contact with the projections of the cam portions 109b and 110b, the outer peripheral surface thereof is separated from the inner peripheral surface of the porous support plate 106, and the respective cam followers 117b and 117b are in contact with the concave portions of the respective cam portions 109b and 110b. When it comes into contact, the outer peripheral surface is configured to protrude from the outer peripheral surface of each of the flanges 109 and 110.

A doctor roller 118 is provided near the ink roller 117. A doctor roller 118 whose outer peripheral surface is disposed close to the outer peripheral surface of the ink roller 117 is rotatably supported by each of the side plates 116a, 116a, and is driven to rotate in a direction opposite to that of the ink roller 117 by driving means (not shown). In the vicinity of the outer peripheral surface of the ink roller 117 and the outer peripheral surface of the doctor roller 118, a wedge-shaped ink reservoir 118a is formed by the ink supplied through the support shaft 105 and an ink supply pipe 130 described later.

A sensor 171 for detecting the amount of ink in the ink reservoir 118a is provided above the ink reservoir 118a. The sensor 171 is fixed to the side plate 116a by a fixing member (not shown).

A support member 119 formed by bending a plate material
Is attached to the inner surface of the base 115 by screws or the like, and a solenoid 120 is attached to the support member 119.

As shown in FIG. 10, the stopper 121 includes legs 121a, 121a, a protrusion 121b, and a tongue piece 1.
21c and a connecting rod 121d are integrally provided, and the legs 121a, 121a are rotatably supported by support shafts 125 on brackets 124, 124 fixed to the base 115. A tension spring 126 is provided between each leg 121a, 121a and each bracket 124, 124.
The stopper 121 is provided with a biasing force in the counterclockwise direction in FIG. 7 around the support shaft 125 to the stopper 121. The protruding portion 121b is connected to each leg 12
1a, 121a, each leg 121a,
121a, each leg 121a, 1
Locking rod 116 at the step at the connection with
and c. The tongue piece 121c is formed integrally with the protruding portion 121b, and is provided at a position where the tongue piece 121c can come into contact with the locking rod 116c when the ink roller supporting member 116 rotates as described later. Connecting rod 1
21d has its both ends fixed to substantially the center of each of the legs 121a, 121a.
A pin 1 provided at the other end of an operation piece 127 rotatably supported at one end by a plunger 120a of a solenoid 120
27a are engaged. The operating piece 127 is a solenoid 1
The mounting member 128 is rotatably supported by a mounting member 128 mounted on the mounting member 20.

Inside each plate cylinder 79, 80, each spindle 8
Ink supply pipes 129 and 130 for supplying ink from 2, 105 to the respective ink reservoirs 96a, 118a are provided.

As shown in FIG. 11, the ink supply pipe 129 has four discharge ports 12 branched from the supply port 129a.
9b, and is attached to the support shaft 82 by a fixing member (not shown). Supply port 129a and support shaft 82
And both ends of a flexible connection pipe 131 communicate with each other.
The ink supplied by 49 (see FIG. 15) is supplied to the ink reservoir 96a via the support shaft 82, the connection pipe 131, and the ink supply pipe 129.

As shown in FIG. 12, the ink supply pipe 130 has four discharge ports 13 branched from a supply port 130a.
0b, and is attached to the base 115 by a fixing member (not shown). In the supply port 130a,
The other end of a flexible connection pipe 132 having one end connected to the support shaft 105 is connected to the other end. The ink is supplied to the ink reservoir 118a via the connection pipe 132 and the ink supply pipe 130.

As shown in FIG. 5, the plate cylinders 79 and 80 are
Positioning member 13 fixed to side plate 133 of housing 23
4, 134, one end of each of the support shafts 82, 105 is positioned and fixed, respectively, and the other end of each of the support shafts 82, 105 is fixed to the housing 23 via a side plate 135 detachable from the housing 23.
By being fixed to 36 and 136, it is positioned and fixed to the housing 23. In addition, the flanges 8, 109 on one end side of the support shafts 82, 105 are provided outside the flanges 8, 109.
Toothed pulleys 137, 144 rotatably supported on the respective support shafts 82, 105 integrally with the bearings 138,
A spacer 1 is provided on the other end of the support shaft 82 outside the flange 85 and is rotatably supported by the support shaft 82 to secure a gap with the side plate 135.
39 is provided integrally with the flange 85 via the bearing 140.

Further, inside the plate cylinder 79, a transmission for transmitting the rotational force transmitted to the toothed pulley 137 from the flange 85 at one end to the flange 85 at the other end via the gears 87 and 142. A member 141 is provided. The transmission member 141 includes a support shaft 141a rotatably supported by the bases 92, 92 and gears 141b, 141c fixed to both ends of the support shaft 141a.
Are arranged so as to mesh with the gear 87 and the gear 141c with the gear 142, respectively. The rotational force transmitted to the toothed pulley 144 is provided inside the plate cylinder 80 by the gear 1.
11, the flange 11 through the flange 109.
A transmission member 145 for transmitting to zero is provided.
The transmission member 145 is rotatably supported by each of the side wall portions 115a, 115a.
The gears 145b and 145c are fixed to both ends of the gear 5a. The gear 145b is arranged to mesh with the gear 111 and the gear 145c meshes with the gear 143, respectively.

At the lower right of the plate cylinder 80, a plate cylinder driving means 81 is provided. As shown in FIG. 13, the plate cylinder driving means 81 is mainly composed of two motors 146 and 147 which are rotatable in the normal and reverse directions and are driven to rotate in opposite directions, and each output shaft of each of the motors 146 and 147. 146a, 147a
Are attached with toothed pulleys 148 and 149, respectively. Timing belts 150 and 151 are stretched between the toothed pulley 148 and the toothed pulley 137 and between the toothed pulley 149 and the toothed pulley 144, so that each of the plate cylinders 79 and 80 is Motor 14
6,147 are transmitted and rotated in opposite directions in synchronization with each other.

An operation panel 15 is provided on the upper front surface of the housing 23.
3 are provided. As shown in FIG. 14, the operation panel 153 includes a prepress start key 154, a print start key 155, a test print key 156, a stop key 157, a ten key 158, a clear key 159, and an enlargement / reduction key 16.
0, a print speed setting key 161, a continuous shooting key 162, a display device 163 composed of 7-segment LEDs, a display device 164 composed of an LCD, and a print mode switching key (not shown) for selectively switching between a double-sided printing mode and a single-sided printing mode. A timer 165 serving as a timer means for measuring the elapsed time from the end of the previous printing operation to the time when the master making start key 154 is pressed, having a well-known configuration on its upper surface.
In its interior.

The control unit 10 is provided below the inside of the housing 23. The control unit 10 mainly includes a control unit 166 which is a known microcomputer having a CPU, a ROM, a RAM, and the like, and controls the operation of the stencil printing apparatus 1.

FIG. 15 is a control block diagram of the control means 166 used in the first embodiment. Control means 1
A stencil printer 66 receives an image data signal from the image reading unit 2, operation signals from the sensors 152, 170, and 171; a control signal from the operation panel 153; and a time signal from the timer 165. 1, the first plate making section 4, the second plate making section 5, the first plate discharging section 6, the second plate discharging section 7, the sheet discharging section 8, the ink pumps 249, 250, and the like. Motors 146, 14
Cylinder driving means 81 having a solenoid 7 and first ink roller moving means 91 having a solenoid 98 and a solenoid 120
And the second ink roller moving means 108 having the above.

The operation of the stencil printing apparatus 1 will be described below based on the above configuration. Prior to the printing operation, a printing mode switching key (not shown) is pressed by an operator to select a printing mode.

The operator sets one or two originals on an original receiving table (not shown) and presses the master making start key 154. At this time, the operation of the timer 165 that has been operating since the end of the previous printing operation is stopped, and this time signal is output to the control unit 166. The control means 166, having received the time signal, compares the time signal with a threshold value stored in the ROM. Call. If the time signal is below the threshold,
Call the operation program for normal printing.

First, the operation during normal printing when the duplex printing mode is selected will be described. When two originals are set on an original receiving table (not shown) and the plate making start key 154 is pressed, the motor 146 is operated to rotate the plate cylinder 79 in the counterclockwise direction in FIG. The lower plate discharging member 48 is operated to move, the printed master 167 wound around the outer peripheral surface of the plate cylinder 79 is peeled and conveyed by the upper plate discharging member 47 and the lower plate discharging member 48, and the printed master 167 is transferred to the plate discharging box 49. After being stored in the inside, it is compressed by the compression plate 50. At the same time as the rotation of the plate cylinder 79, the motor 147 operates to rotate the plate cylinder 80 clockwise in FIG. 1, and the moving means (not shown) operates to move the lower plate discharging member 58, so that the outer peripheral surface of the plate cylinder 80 is moved. The printed master 168 wound around the upper plate discharging member 57
The sheet is peeled off from the outer peripheral surface of the plate cylinder 80 by the lower plate discharge member 58, conveyed into the plate discharge box 59, and compressed by the compression plate 60. Thereafter, the plate cylinders 79 and 80 rotate to the plate feeding standby position and stop, and the plate discharging operation is completed.

The image reading section 2 performs a document image reading operation. The document conveying roller pair 12 starts rotating in parallel with the plate discharging operation, and one upper sheet of the document (not shown) is conveyed on the contact glass 11. Reading of the original image
The reflection is performed by reflecting the reflected light exposed and reflected by the fluorescent lamp 20 by the reflection mirrors 18 and 19. The read original image is condensed by the lens 21, then enters the image sensor 22 and is photoelectrically converted. The photoelectrically converted electric signal is input to an A / D converter (not shown) in the housing 23. The document from which the image has been read is discharged by a document transport belt 16 and a document transport roller 13 to a document tray (not shown) disposed above the document transport belt 16.

In parallel with the original reading operation, the first plate making section 4 performs a plate making operation. After the plate discharging operation is completed, the platen roller 36 and the master transport roller pairs 38 and 39 start rotating, and the master 33 is pulled out from the master roll 34. The master 33 pulled out is subjected to plate making when passing through the thermal head 35. The plurality of heating elements arranged on the surface of the thermal head 35 are selectively provided in accordance with digital image signals sent after being subjected to various processes by an A / D converter and other plate making substrates (not shown). Heat is generated, and the thermoplastic resin film of the master 33 is melt-punched.

Then, based on the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 36, the tip of the master 33 is moved to the stage 86 and the clamper 9
When the control unit 166 determines that the control unit 166 has reached a predetermined position between 0 and 0, an operation signal is sent to an opening / closing unit (not shown), the clamper 90 rotates, and the stage 86 and the clamper 9 are rotated.
With 0, the tip of the master 33 is clamped.

Thereafter, the plate cylinder 79 rotates clockwise in FIG. 1 at the same peripheral speed as the transport speed of the master 33,
The operation of winding the third cylinder 79 on the plate cylinder 79 is performed. When the control means 166 determines that plate making for one plate is completed from the number of steps of a stepping motor (not shown), the rotation of the platen roller 36 and the master transport roller pairs 38 and 39 is stopped, and the movable blade 37a is rotated. Then, the master 33 is disconnected. The cut master 33 is a plate cylinder 79
When the plate cylinder 79 reaches the home position again, the motor 146 is stopped by a command from the control means 166, and the plate cylinder 79 is positioned.

After reading the first original, the original transport roller pair 12 continues to rotate, and the remaining original is transported on the contact glass 11 and is read in the same manner as the previous original. It is discharged to a tray. In this embodiment, the image is read from each of the two originals. However, when the image is read from both sides of one original, the original transport belt 16 and the original transport roller 1 are read after the reading of one side is completed.
When the switching plate 17 is rotated in the counterclockwise direction by a mechanism (not shown) at the same time as the rotation of the document 3, the direction of travel of the document is changed and guided again onto the contact glass 11, and the other surface is read. Have been.

In parallel with the reading operation of the second original, the second plate making section 5 performs a plate making operation in the same manner as the first plate making section 4.
After the plate discharging operation is completed, the platen roller 43 and the master transport roller pairs 45 and 46 start rotating, and the master 40 is pulled out from the master roll 41. The pulled-out master 40 is, like the master 33, a thermal head 42.
The plate is made when passing through.

When the control means 166 determines that the leading end of the master 40 has reached a predetermined position based on the number of steps of a stepping motor (not shown) for rotating and driving the platen roller 43, an operation signal is sent to opening / closing means (not shown). The clamper 114 rotates, and the leading end of the master 40 is held between the stage section and the clamper 114.

Thereafter, the plate cylinder 80 rotates counterclockwise in FIG. 1 at the same peripheral speed as the transport speed of the master 40, and the operation of winding the master 40 around the plate cylinder 80 is performed. When the control unit 166 determines that plate making for one plate is completed based on the number of steps of a stepping motor (not shown), the platen roller 43 and the master transport roller pair 45 and 46 are determined.
Is stopped, and the movable blade 44a rotates and the master 40 is cut. The cut master 40 is pulled out by the rotation of the plate cylinder 80, and when the plate cylinder 80 reaches the home position again, the motor 147 is stopped by a command from the control means 166, and the plate cylinder 80 is positioned.

At the same time when the plate feeding operation to the plate cylinders 79 and 80 is completed, the sheet feeding roller 25 and the separation rollers 26 and 27 rotate, and the motors 146 and 147 start operating again. The uppermost one of the printing papers P stacked on the printer is separated and fed toward the registration roller pair 30, and the plate cylinders 79 and 80 start rotating at a low speed. Separated and fed, the tip of which is the registration roller pair 30
The printed printing paper P is held in a registration roller pair 3
0 rotates at a predetermined timing, whereby each plate cylinder 7 is rotated.
It is fed between 9,80.

On the other hand, inside the plate cylinders 79 and 80, the ink rollers 95 and 117, which are rotationally driven by driving means (not shown), respectively, rotate the plate cylinders 79 and 80 and rotate the cam portions 85c, 85c and 85c. Simultaneously swing along the shapes of 109b and 110b.

While energizing the solenoid 98, the plate cylinder 7
9 (each flange 85, 85),
When the protrusions c and 85c come into contact with the cam followers 95b and 95b, the ink roller 95 moves upward in FIG. 7, and a gap is generated between the one end 99a of the stopper 99 and the locking rod 94c, the plunger 98a is moved. After being sucked, the stopper 99 is rotated around the support shaft 103 in the counterclockwise direction in FIG. Thereafter, when each of the cam followers 95b, 95b passes through the convex portion of each of the cam portions 85c, 85c, the first support member 93 and the second support member 94 are moved around the support shaft 101 by the urging force of the tension spring 104 in FIG. Rotates counterclockwise. By this rotation, the outer peripheral surface of the ink roller 95 comes into pressure contact with the porous support plate 83, and the porous support plate 83 and the mesh screen 89 swell downward in FIG. At this time, the control unit 166 confirms that the ink roller 95 has been swung by the signal from the sensor 152.

Also, while energizing the solenoid 120, the plate cylinder 80 (the flanges 109 and 110) is rotated,
The protrusions of the cam portions 109b and 110b are the cam followers 1
17b and 117b, the ink roller 117 moves downward in FIG.
When a gap is generated between the lock bar 116c and the lock bar 116c, the plunger 120a is sucked and the stopper 121 is
Is rotated clockwise in FIG. After that, each of the cam followers 117b, 117b
When the ink roller support member 116 passes through the convex portion of the support shaft 122b, the support shaft 122
Is rotated clockwise in FIG. By this rotation, the outer peripheral surface of the ink roller 117 is
The porous support plate 106 and a mesh screen (not shown) swell upward in FIG.

The printing paper P is fed from the pair of registration rollers 30 to between the plate cylinders 79 and 80 with a slight delay from the swinging operation of the ink rollers 95 and 117. Thereby, the porous support plate 83, the porous support plate 106, the mesh screen 89, a mesh screen (not shown),
The ink roller 95 and the ink roller 117 are pressed against each other via the master 33, the master 40, and the printing paper P, and the print image is transferred to both sides of the printing paper P. At the time of this pressure contact, the ink roller 95 swings by the second support member 94 swinging about the swing shaft 102, and the pressure contact with the ink roller 117 in the axial direction is performed uniformly. FIGS. 5 and 16 show a state where the ink roller 95 and the ink roller 117 are pressed against each other.

Printing paper P on which print images are transferred on both sides
Is separated from the outer peripheral surface of the plate cylinder 79 or the plate cylinder 80 by the separation claw 67 or the separation claw 68, and the guide plates 69 and 7 are separated.
The sheet is conveyed by the sheet discharge conveying member 71 through the space 0 and discharged onto the sheet discharge tray 72.

After the printing, the plate cylinders 79 and 80 continue to rotate. After the ink rollers 95 and 117 oscillate, the power to the solenoids 98 and 120 is cut off according to a command from the control means 166, and the stoppers 99 and 121 are actuated as shown in FIG. It moves to the position which comes into contact with each of the locking rods 94c, 116c as indicated by the dashed line.

When the cam followers 95b, 95b again come into contact with the convex portions of the cam portions 85c, 85c by the rotation of the plate cylinder 79, the first support member 93 and the second support member 94
Rotates around the support shaft 101 in the clockwise direction in FIG. By this rotation, the locking rod 94c and the stopper 99
When the contact with the one end 99a is released, the stopper 99
Rotate by the urging force of the urging means (not shown) and return to the position shown in FIG.

Similarly, the rotation of the plate cylinder 80 causes each of the cam followers 117b, 117b to move to the respective cam portions 109b, 110b.
When it comes into contact with the convex portion of the ink roller support member 11 again,
6 rotates counterclockwise in FIG. 16 around the support shaft 122, and the locking rod 116c and the tongue piece 121 of the stopper 121 are rotated.
c, the stopper 121 is released.
Is rotated by the urging force of the tension springs 126 and 126 and returns to the position shown in FIG.

Thereafter, the plate cylinders 79 and 80 rotate to the home position and stop, and the plate attaching operation is completed. After the stencil printing operation is completed and the stencil printing apparatus 1 is in the printing standby state, when the test printing key 156 is pressed by the operator, the uppermost one on the paper feed tray 24 as in the stencil printing operation.
The printing paper P is fed by the feed roller 25 and the separation rollers 26 and 27.
And the tip thereof is held in the pair of registration rollers 30. At the same time, a command is sent from the control means 166 to start the motors 146 and 147, and the plate cylinders 79 and 80 are driven to rotate at high speed. . The registration roller pair 30 feeds the printing paper P between the plate cylinders 79 and 80 rotating at a high speed at the same timing as the plate attaching operation. The fed printing paper P has a print image transferred to both sides thereof,
After being separated from the outer peripheral surface of the plate cylinder 79 or the plate cylinder 80 by the separation claw 67 or the separation claw 68, the sheet is conveyed by the sheet discharge conveyance member 71 and discharged onto the sheet discharge tray 72. Each plate cylinder 79, 80 returns to the home position again, and the test printing operation is completed.

The density and position of the print image are confirmed by this test printing, and these are adjusted with various keys on the operation panel 153 and test printing is performed again. And print speed setting key 1
When the printing speed is set at 61 and the printing start key 155 is pressed, the printing paper P is continuously fed from the paper feeding unit 3 and the plate cylinders 79 and 80 are kept energized to the solenoids 98 and 120. Are rotationally driven at high speed, respectively, to perform a printing operation. When the printing of the set number of prints is completed, the timer 165 starts operating again.

In the above-described printing operation, when the amount of ink in the ink pool 96a and the ink pool 118a decreases, a signal is output from the sensor 170 or the sensor 171 to the control means 166. Control means 1 receiving the signal
66 activates the ink pumps 249 and 250 so that ink from an ink pack (not shown)
2, 105, connection pipes 131, 132, and ink supply pipes 129, 130 are supplied to the ink pool 96a or the ink pool 118a.

Next, the operation during normal printing when the one-sided printing mode is selected will be described. When one document is set on a document receiving table (not shown) and the plate making start key 154 is pressed, the first plate discharging unit 6 and the second plate discharging unit 6 are pressed in the same manner as in the duplex printing mode.
The plate discharging section 7 performs a plate discharging operation for peeling and discarding the used masters 167 and 168 from the outer peripheral surfaces of the plate cylinders 79 and 80, and the image reading section 2 performs a document image reading operation.

A prepress operation is performed in parallel with the original reading operation. In the first plate making section 4, a plate making operation is performed in the same manner as in the double-sided printing mode, and the plate making master 33 is wound on the outer peripheral surface of the plate cylinder 79, but the plate making operation is not performed in the second plate making section 5. On the outer peripheral surface of the plate cylinder 80, an unmade master 40 is wound.

After the plate feeding operation to each of the plate cylinders 79 and 80 is completed, one sheet of printing paper P is fed from the paper feed unit 3, and each of the plate cylinders 79 and 80 starts rotating at a low speed. The printing paper P is fed between the plate cylinders 79 and 80 after timing is adjusted by the registration roller pair 30.

The ink rollers 95 and 117 swing by the rotation of the plate cylinders 79 and 80, and the printing paper P is sandwiched between the swelled porous support plates 83 and 106, thereby printing on the printing paper P. The image is transferred. At this time, since the master 40 is not made, the image formed on the master 33 is transferred to the printing paper P only on the upper surface side. The printing paper P, on which the print image has been transferred on the upper surface, is released from the plate cylinder 79 by the release claws 67.
, And is conveyed by the paper discharge conveyance member 71 and discharged onto the paper discharge tray 72.

After the plate cylinders 79 and 80 are stopped at the home position and the printing operation is completed, the test print key 156 is pressed to perform test print in the same manner as described above, and thereafter, the print start key 155. Is pressed, the printing operation is performed. When the printing of the set number of prints is completed, the timer 165 starts operating again.

Next, the operation at the time of printing after standing will be described. When the plate making start key 154 is pressed, each plate cylinder 7 is pressed.
9 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized, and the plate cylinders 79 and 8 are turned on.
Inside 0, each of the ink rollers 95 and 117 rotated and driven by a driving unit (not shown) swings in the same manner as in the normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 are expanded. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
67, ink roller 9 via printed master 168
5 and the ink roller 117 are pressed against each other, and the plate cylinders 79 and 80 rotate in this state.

Due to this pressure contact, the ink whose viscosity has been reduced by standing, which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown), has been printed.
8 and is removed from the plate cylinders 79 and 80, and the porous support plate 83 and the porous support plate 10 are removed.
6. The mesh screen 89 and a mesh screen (not shown) are filled with new ink.

After the plate cylinders 79 and 80 have rotated the number of times previously stored in the control means 166, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the pressing operation is completed, each motor 14
6, 147 are operated to rotate the respective plate cylinders 79, 80 in opposite directions, and at the same time, moving means (not shown) are operated to move the respective lower plate discharging members 48, 58, so that the plate cylinders 79, 80 are moved.
Printed masters 167 and 168 wound on the outer peripheral surface of
Is peeled off. Thereafter, the plate cylinders 79 and 80 rotate to the home position and stop, and the plate discharging operation is completed.

After the plate discharge operation is completed, the platen roller 36 and the master transport roller pairs 38 and 39 start rotating, and the master 33 is pulled out from the master roll 34.
The pulled-out master 33 passes through the thermal head 35, but at this time, the heating elements of the thermal head 35 do not generate heat, and the master 33 does not perform a plate making operation on the thermoplastic resin film.

The control means 1 determines that the leading end of the unprinted master 33 has reached a predetermined position between the stage 86 and the clamper 90 due to the number of steps of a stepping motor (not shown) for rotating and driving the platen roller 36.
When the judgment is made at 66, an operation signal is sent to the opening / closing means (not shown), and the clamper 90 rotates, so that the leading end of the master 33 is held between the stage section 86 and the clamper 90.

Thereafter, the plate cylinder 79 rotates in the clockwise direction in FIG.
The operation of winding the third cylinder 79 on the plate cylinder 79 is performed. When the control unit 166 determines that the conveyance of one plate has been completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 36 and the master conveyance roller pairs 38 and 39 is stopped, and the movable blade 37a is rotated. It moves and the master 33 is disconnected. The cut master 33 is the plate cylinder 7
When the plate cylinder 79 reaches the home position again, the motor 146 is stopped by a command from the control means 166, the plate cylinder 79 is positioned, and the unprinted master 33 is supplied to the plate cylinder 79. The plate operation is completed.

After the plate discharging operation is completed, the platen roller 43 and the master transport roller pairs 45 and 46 also start rotating, and the master 40 is pulled out from the master roll 41.
Like the master 33, the pulled-out master 40 passes through the thermal head 42 without making a plate.

When the control means 166 determines that the leading end of the unmade master 40 has reached a predetermined position from the number of steps of a stepping motor (not shown) for driving the rotation of the platen roller 43, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 114 rotates and the leading end of the master 40 is held between the stage section and the clamper 114.

After that, the plate cylinder 80 rotates counterclockwise in FIG. 1 at the same peripheral speed as the transfer speed of the master 40, and the operation of winding the master 40 around the plate cylinder 80 is performed. When the control unit 166 determines that the conveyance of one plate has been completed from the number of steps of a stepping motor (not shown), the platen roller 43 and the master conveyance roller pair 45 and 46 are determined.
Is stopped, and the movable blade 44a rotates and the master 40 is cut. The cut master 40 is pulled out by the rotation of the plate cylinder 80, and when the plate cylinder 80 reaches the home position again, the motor 147 is stopped by a command from the control means 166 to position the plate cylinder 80, and the plate cylinder 80 is positioned. The plate feeding operation of the non-plate master 40 is completed.

When the plate cylinder 80 is positioned, each plate cylinder 7
9 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized, and the plate cylinders 79 and 8 are turned on.
Inside 0, each of the ink rollers 95 and 117 rotated by driving means (not shown) swings in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 are expanded. Support plate 106, mesh screen 8
9. Mesh screen (not shown), unprinted master 3
3. The ink roller 95 and the ink roller 117 are pressed into contact with each other via the unprinted master 40.
9,80 rotates.

Due to this pressure contact, the ink whose viscosity has been reduced by standing, which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown), has not been printed. The ink is absorbed by the support and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) are filled with new ink.

Further, due to this pressure contact, unevenness of the ink density corresponding to the perforated portions of the printed masters 167 and 168 remaining on the surface of the mesh screen 89 and the surface of the mesh screen (not shown) is eliminated. , 40 are alleviated by being absorbed by the porous support, and the ink density on each plate cylinder 79, 80 is made uniform.

After the plate cylinders 79 and 80 have rotated the number of times previously stored in the control means 166, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the second pressing operation is completed, the motors 146 and 147 operate to rotate the plate cylinders 79 and 80 in opposite directions, and the moving means (not shown) operates to move the lower plate discharging members. 48, 58 move, and each plate cylinder 7
The unprinted masters 33, 40 are peeled off from the outer peripheral surfaces of the plates 9, 80. Thereafter, the plate cylinders 79 and 80 rotate to the home position and stop, and the second plate discharging operation is completed.

After the second plate discharging operation is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected printing mode, and after the printing operation is completed, the timer 165 starts operating again. I do. FIG. 17 shows a series of operations in the first embodiment.

Next, a second embodiment of the present invention will be described.
The second embodiment differs from the first embodiment only in that a control unit 169 is used instead of the control unit 166. A control unit 169 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Are provided in the control unit 10 of the stencil printing apparatus 1 in place of the control means 166, and the image reading unit 2, the sensors 15
2, 170, 171 and signals from the operation panel 153, and based on the operation program of the stencil printing apparatus 1 different from the control means 166 stored in the ROM,
The control unit controls the sheet feeding unit 3, the first plate making unit 4, the second plate making unit 5, the first plate discharging unit 6, the second plate discharging unit 7, the sheet discharging unit 8, and the printing unit 9.

The operation of the stencil printing machine 1 according to the second embodiment will be described below. When one or two originals are set on an original receiving table (not shown) by the operator and the master making start key 154 is pressed, a timer 165 is activated.
Stops, and a time signal is output to the control means 169. The control unit 169 compares the input time signal with a threshold value stored in the ROM, and calls an operation program for normal printing or an operation program for after-standby printing from the ROM, similarly to the control unit 166. Here, since the operation at the time of normal printing is the same as that of the first embodiment,
Only the operation at the time of printing after standing will be described.

When the plate making start key 154 is depressed, the plate cylinders 79 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized.
Inside the printers 9 and 80, the respective ink rollers 95 and 117 rotated by driving means (not shown) respectively oscillate in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 expand. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
67, ink roller 9 via printed master 168
5 and the ink roller 117 are pressed against each other, and the plate cylinders 79 and 80 rotate in this state.

By this pressure contact, the ink whose viscosity has been reduced by standing and which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) has been printed.
8 and is removed from the plate cylinders 79 and 80, and the porous support plate 83 and the porous support plate 10 are removed.
6. The mesh screen 89 and a mesh screen (not shown) are filled with new ink.

After the plate cylinders 79 and 80 have rotated the number of times stored in the control means 169 in advance, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the pressing operation is completed, each motor 14
6, 147 are operated to rotate the respective plate cylinders 79, 80 in opposite directions, and at the same time, moving means (not shown) are operated to move the respective lower plate discharging members 48, 58, so that the plate cylinders 79, 80 are moved.
Printed masters 167 and 168 wound on the outer peripheral surface of
Is peeled off. Thereafter, the plate cylinders 79 and 80 rotate to the home position and stop, and the plate discharging operation is completed.

After the plate discharging operation is completed, the plate cylinders 79 and 80 start rotating at a low speed, respectively, and the solenoids 98 and 1 are rotated.
Power is supplied to the ink roller 20 and the ink rollers 95 and 117 oscillated inside the plate cylinders 79 and 80 by driving means (not shown).

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9. The ink roller 95 and the ink roller 117 are pressed against each other via a mesh screen (not shown), and the plate cylinders 79 and 80 rotate in this state.

By this pressing, the mesh screen 89
And the ink density remaining on the perforated portions of the printed masters 167 and 168 remaining on the surface of the mesh screen (not shown) are leveled, and the ink density on the plate cylinders 79 and 80 becomes substantially uniform.

After the plate cylinders 79 and 80 have been rotated by the number of times stored in the control means 169 in advance, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

After the completion of the second pressing operation, the platen roller 36 and the master transport roller pairs 38 and 39 start rotating, and the master 33 is pulled out from the master roll 34. The pulled out master 33 is a thermal head 35
At this time, the heating element of the thermal head 35 does not generate heat, and the master 33 does not perform the plate making operation on the thermoplastic resin film.

The control means 1 determines that the leading end of the unmade master 33 has reached a predetermined position between the stage 86 and the clamper 90 due to the number of steps of a stepping motor (not shown) for driving the rotation of the platen roller 36.
When the judgment is made at 69, an operation signal is sent to the opening / closing means (not shown), and the clamper 90 rotates, so that the stage section 86 and the clamper 90 hold the leading end of the master 33.

Thereafter, the plate cylinder 79 rotates in the clockwise direction in FIG.
The operation of winding the third cylinder 79 on the plate cylinder 79 is performed. When the control unit 169 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 36 and the master conveyance roller pairs 38 and 39 is stopped, and the movable blade 37a is rotated. It moves and the master 33 is disconnected. The cut master 33 is the plate cylinder 7
When the plate cylinder 79 reaches the home position again, the motor 146 is stopped by a command from the control means 169 to position the plate cylinder 79, and the unprinted master 33 is supplied to the plate cylinder 79. The plate operation is completed.

After the completion of the second pressing operation, the platen roller 43 and the master transport roller pairs 45 and 46 also start rotating, and the master 40 is pulled out from the master roll 41. Like the master 33, the pulled-out master 40 passes through the thermal head 42 without making a plate.

When the control means 169 determines that the leading end of the unmade master 40 has reached the predetermined position based on the number of steps of a stepping motor (not shown) for rotating the platen roller 43, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 114 rotates and the leading end of the master 40 is held between the stage unit and the clamper 114.

After that, the plate cylinder 80 rotates counterclockwise in FIG. 1 at the same peripheral speed as the transfer speed of the master 40, and the operation of winding the master 40 around the plate cylinder 80 is performed. When the control unit 169 determines that the conveyance of one plate has been completed based on the number of steps of a stepping motor (not shown), the platen roller 43 and the master conveyance roller pair 45 and 46 are determined.
Is stopped, and the movable blade 44a rotates and the master 40 is cut. The cut master 40 is pulled out by the rotation of the plate cylinder 80, and when the plate cylinder 80 reaches the home position again, the motor 147 is stopped by a command from the control means 169 to position the plate cylinder 80, and the plate cylinder 80 is positioned. The plate feeding operation of the non-plate master 40 is completed.

When the plate cylinder 80 is positioned, each plate cylinder 7
9 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized, and the plate cylinders 79 and 8 are turned on.
Inside 0, each of the ink rollers 95 and 117 rotated by driving means (not shown) swings in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9. Mesh screen (not shown), unprinted master 3
3. The ink roller 95 and the ink roller 117 are pressed into contact with each other via the unprinted master 40.
9,80 rotates.

By this pressure contact, the ink whose viscosity has been reduced by standing and which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) has been removed from the unprinted masters 33 and 40. The ink is absorbed by the support and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) are filled with new ink.

Further, due to this pressure contact, unevenness in the density of ink corresponding to the perforated portions of the printed masters 167 and 168 remaining on the surface of the mesh screen 89 and the surface of the mesh screen (not shown) is eliminated. , 40 are further absorbed by the porous support, and the ink density on each plate cylinder 79, 80 is made more uniform.

After the plate cylinders 79 and 80 have rotated the number of times previously stored in the control means 169, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the third pressing operation is completed, the motors 146 and 147 operate to rotate the plate cylinders 79 and 80 in directions opposite to each other, and the moving means (not shown) operates to operate the lower plate discharging members. 48, 58 move, and each plate cylinder 7
The unprinted masters 33, 40 are peeled off from the outer peripheral surfaces of the plates 9, 80. Thereafter, the plate cylinders 79 and 80 rotate to the home position and stop, and the second plate discharging operation is completed.

After the second plate discharging operation is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected print mode, and the timer 165 starts operating again after the printing operation is completed. I do. FIG. 18 shows a series of operations in the second embodiment.

Next, a third embodiment of the present invention will be described.
The third embodiment differs from the first embodiment only in that a control unit 172 is used instead of the control unit 166. A control unit 172 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Are provided in the control unit 10 of the stencil printing apparatus 1 in place of the control means 166, and the image reading unit 2, the sensors 15
2, 170, 171 and the operation panel 153, and receives control signals 166, 1 stored in the ROM.
69, based on an operation program of the stencil printing apparatus 1 different from that of the stencil printing machine 1,
It controls the plate discharging unit 6, the second plate discharging unit 7, the sheet discharging unit 8, and the printing unit 9.

Hereinafter, the operation of the stencil printing machine 1 according to the third embodiment will be described. When one or two originals are set on an original receiving table (not shown) by the operator and the master making start key 154 is pressed, the timer 1
The operation of 65 is stopped, and a time signal is output to the control means 172. The control means 172 stores the input time signal in the ROM
The operation program at the time of normal printing or the operation program at the time of leaving printing is read from the ROM in the same manner as the control means 166 and 169.
Here, since the operation at the time of normal printing is the same as that of the first embodiment, only the operation at the time of printing after leaving will be described.

When the plate making start key 154 is pressed, the plate cylinders 79 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized.
Inside the printers 9 and 80, the respective ink rollers 95 and 117 rotated by driving means (not shown) respectively oscillate in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
67, ink roller 9 via printed master 168
5 and the ink roller 117 are pressed against each other, and the plate cylinders 79 and 80 rotate in this state.

Due to this pressure contact, the ink, which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) and whose viscosity has been reduced by standing, is supported by the porous support plate The ink is absorbed by the body and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and a mesh screen (not shown) are filled with new ink.

After the plate cylinders 79 and 80 have rotated the number of times previously stored in the control means 172, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the pressing operation is completed, the motor 147 operates to rotate the plate cylinder 80 in the clockwise direction in FIG. 1, and the moving means (not shown) operates to move the lower plate discharging member 58 to move the plate cylinder. The printed master 168 wound on the outer peripheral surface of the tape 80 is peeled off. During this time, the motor 14
6 stops its operation, and the plate cylinder 79 is positioned at the home position. Thereafter, the plate cylinder 80 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 80 is completed.

After the plate cylinder 80 completes the plate discharging operation, each plate cylinder 79,
80 starts rotating at a low speed, and the solenoids 98 and 120 are energized again, and the plate cylinders 79 and 8 are turned on again.
Inside 0, each of the ink rollers 95 and 117, each of which is rotationally driven by a driving unit (not shown), starts swinging again.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
Ink roller 95 and ink roller 11 via 67
7 are pressed against each other, and in this state, the plate cylinders 79 and 80 rotate.

[0166] By this pressure contact, the ink which has adhered to the porous support plate 83 and the mesh screen 89 and whose viscosity has been reduced by standing is absorbed by the porous support of the printed master 167. The ink, which has been attached to a mesh screen (not shown) and whose viscosity has been reduced by standing, adheres to the thermoplastic resin film of the printed master 167 and is removed from the plate cylinders 79 and 80, and the porous support plate 83 and the porous support plate Support plate 10
6. The mesh screen 89 and a mesh screen (not shown) are filled with new ink. In addition, unevenness of the density of the ink corresponding to the perforated portion of the printed master 168 remaining on the surface of the mesh screen (not shown) is leveled.

After the plate cylinders 79 and 80 have rotated the number of times previously stored in the control means 172, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be held again.

When the second pressing operation is completed, the motor 146 is operated to rotate the plate cylinder 79 in the counterclockwise direction in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 48. Then, the printed master 167 wound around the outer peripheral surface of the plate cylinder 79 is peeled off. During this time, the motor 147 stops operating, and the plate cylinder 80 is positioned at the home position. Thereafter, the plate cylinder 79 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 79 is completed.

After the plate discharging operation of the plate cylinder 79 is completed, the plate making operation is performed in the same manner as in the normal printing in the selected print mode.
The plate feeding operation and the printing operation are sequentially performed, and after the printing operation is completed, the timer 165 starts operating again. FIG. 19 shows a series of operations in the third embodiment. Note that, in the third embodiment, an example is shown in which the plate discharging operation of the plate cylinder 80 is performed first, and the second pressing operation is performed in a state where the printed master 168 is peeled off. The second press-contact operation may be performed with the printed master 167 peeled off first.

Next, a fourth embodiment of the present invention will be described.
The fourth embodiment differs from the first embodiment only in that a control unit 173 is used instead of the control unit 166. A control unit 173 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Are provided in the control unit 10 of the stencil printing apparatus 1 in place of the control means 166, and the image reading unit 2, the sensors 15
2, 170, 171 and the operation panel 153, and receives control signals 166, 1 stored in the ROM.
On the basis of an operation program of the stencil printing apparatus 1 different from 69 and 172, the sheet feeding unit 3, the first plate making unit 4, the second plate making unit 5, the first plate discharging unit 6, the second plate discharging unit 7, the sheet discharging unit 8, printing unit 9
Control.

The operation of the stencil printing machine 1 according to the fourth embodiment will be described below. When one or two originals are set on an original receiving table (not shown) by the operator and the master making start key 154 is pressed, the timer 1
The operation of 65 stops, and a time signal is output to the control means 173. The control means 173 stores the input time signal in the ROM
Is compared with the threshold value stored in the control means 166, 169,
As in the case of 172, the operation program for normal printing or the operation program for printing after standing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the first embodiment, only the operation at the time of printing after leaving will be described.

When the plate making start key 154 is pressed, the plate cylinders 79 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized.
Inside the printers 9 and 80, the respective ink rollers 95 and 117 rotated by driving means (not shown) respectively oscillate in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 are expanded. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
67, ink roller 9 via printed master 168
5 and the ink roller 117 are pressed against each other, and the plate cylinders 79 and 80 rotate in this state.

By this pressure contact, the ink, which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) and the viscosity of which has been reduced by standing, is reduced by the porous support of the printed masters 167 and 168. The ink is absorbed by the body and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and a mesh screen (not shown) are filled with new ink.

Each of the plate cylinders 79, 80 is stopped at the home position after rotating the number of times previously stored in the control means 173. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the pressing operation is completed, the motor 147 is operated to rotate the plate cylinder 80 clockwise in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 58, and the plate cylinder is moved. The printed master 168 wound on the outer peripheral surface of the tape 80 is peeled off. During this time, the motor 14
6 stops its operation, and the plate cylinder 79 is positioned at the home position. Thereafter, the plate cylinder 80 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 80 is completed.

After completion of the plate discharging operation of the plate cylinder 80, each plate cylinder 79,
80 starts rotating at a low speed, and the solenoids 98 and 120 are energized again, and the plate cylinders 79 and 8 are turned on again.
Inside 0, each of the ink rollers 95 and 117, each of which is rotationally driven by a driving unit (not shown), starts swinging again.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 bulges outward, respectively. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
Ink roller 95 and ink roller 11 via 67
7 are pressed against each other, and in this state, the plate cylinders 79 and 80 rotate.

By this pressure contact, the ink, which has adhered to the porous support plate 83 and the mesh screen 89 and has decreased in viscosity due to standing, is absorbed by the porous support of the printed master 167. The ink, which has been attached to a mesh screen (not shown) and whose viscosity has been reduced by standing, adheres to the thermoplastic resin film of the printed master 167 and is removed from the plate cylinders 79 and 80, and the porous support plate 83 and the porous support plate Support plate 10
6. The mesh screen 89 and a mesh screen (not shown) are filled with new ink. In addition, unevenness of the density of the ink corresponding to the perforated portion of the printed master 168 remaining on the surface of the mesh screen (not shown) is leveled.

Each of the plate cylinders 79, 80 is stopped at the home position after rotating the number of times stored in the control means 173 in advance. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be held again.

When the second pressing operation is completed, the motor 146 operates to rotate the plate cylinder 79 counterclockwise in FIG. 1, and the moving means (not shown) operates to move the lower plate discharging member 48. Then, the printed master 167 wound around the outer peripheral surface of the plate cylinder 79 is peeled off. During this time, the motor 147 stops operating, and the plate cylinder 80 is positioned at the home position. Thereafter, the plate cylinder 79 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 79 is completed.

After the plate cylinder 79 completes the plate discharging operation, the platen roller 36 and the master transport roller pairs 38 and 39 start rotating, and the master roll 34 and the master 33 are rotated.
Is pulled out. The pulled-out master 33 passes through the thermal head 35, but at this time, the heating elements of the thermal head 35 do not generate heat, and the master 33 does not perform a plate making operation on the thermoplastic resin film.

The control means 1 determines that the leading end of the unprinted master 33 has reached a predetermined position between the stage 86 and the clamper 90 due to the number of steps of a stepping motor (not shown) for rotating and driving the platen roller 36.
When the judgment is made at 73, an operation signal is sent to the opening / closing means (not shown), and the clamper 90 rotates, so that the front end of the master 33 is held between the stage 86 and the clamper 90.

After that, the plate cylinder 79 rotates clockwise in FIG.
The operation of winding the third cylinder 79 on the plate cylinder 79 is performed. When the control means 173 determines that the conveyance of one plate has been completed from the number of steps of a stepping motor (not shown), the rotation of the platen roller 36 and the master conveyance roller pairs 38 and 39 is stopped, and the movable blade 37a is rotated. It moves and the master 33 is disconnected. The cut master 33 is the plate cylinder 7
When the plate cylinder 79 reaches the home position again, the motor 146 is stopped by a command from the control means 173 to position the plate cylinder 79, and the unprinted master 33 is supplied to the plate cylinder 79. The plate operation is completed.

After the plate discharging operation of the plate cylinder 79 is completed, the platen roller 43 and the master transport roller pairs 45 and 46 also start rotating, and the master roll 41 moves to the master 40.
Is pulled out. The extracted master 40 is the master 3
Similarly to 3, the plate passes through the thermal head 42 without being made.

When the control means 173 determines that the leading end of the unmade master 40 has reached a predetermined position from the number of steps of a stepping motor (not shown) for rotatingly driving the platen roller 43, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 114 rotates and the leading end of the master 40 is held between the stage unit and the clamper 114.

Thereafter, the plate cylinder 80 rotates counterclockwise in FIG. 1 at the same peripheral speed as the transport speed of the master 40, and the master 40 is wound around the plate cylinder 80. When the control unit 173 determines that the transport of one plate has been completed based on the number of steps of a stepping motor (not shown), the platen roller 43 and the master transport roller pair 45 and 46 are determined.
Is stopped, and the movable blade 44a rotates and the master 40 is cut. The cut master 40 is pulled out by the rotation of the plate cylinder 80, and when the plate cylinder 80 reaches the home position again, the motor 147 is stopped by a command from the control means 173, the plate cylinder 80 is positioned, and the plate cylinder 80 is positioned. The plate feeding operation of the non-plate master 40 is completed.

When the plate cylinder 80 is positioned, each plate cylinder 7
9 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized, and the plate cylinders 79 and 8 are turned on.
Inside 0, each of the ink rollers 95 and 117 rotated by driving means (not shown) swings in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 expands outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 are expanded. Support plate 106, mesh screen 8
9. Mesh screen (not shown), unprinted master 3
3. The ink roller 95 and the ink roller 117 are pressed into contact with each other via the unprinted master 40.
9,80 rotates.

Due to this pressure contact, the ink whose viscosity has been reduced by standing and which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) has been removed from the unprinted masters 33 and 40. The ink is absorbed by the support and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) are filled with new ink.

Further, due to this pressure contact, unevenness of the ink density corresponding to the perforated portions of the printed masters 167 and 168 remaining on the surface of the mesh screen 89 and the surface of the mesh screen (not shown) is eliminated. , 40 are alleviated by being absorbed by the porous support, and the ink density on each plate cylinder 79, 80 is made uniform.

Each of the plate cylinders 79 and 80 is rotated at the number of times previously stored in the control means 173 and then stopped at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the third pressing operation is completed, the motors 146 and 147 are operated to rotate the plate cylinders 79 and 80 in directions opposite to each other, and the moving means (not shown) is operated to move the lower plate discharging members 48. , 58 move, and each plate cylinder 79,
Unprinted masters 33 and 40 are peeled off from the outer peripheral surface of 80. After that, the plate cylinders 79 and 80 rotate to the home position and stop, and the two cylinders 79 and 80 respectively
The second plate discharging operation is completed.

After the second plate discharging operation is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected printing mode, and the timer 165 starts operating again after the printing operation is completed. I do. FIG. 20 shows a series of operations in the fourth embodiment. Note that, in the fourth embodiment, as in the third embodiment, an example in which the plate discharging operation of the plate cylinder 80 is performed first, and the second press-contact operation is performed in a state where the printed master 168 is separated. However, a configuration in which the second press-contact operation is performed in a state in which the plate discharging operation of the plate cylinder 79 is performed first and the printed master 167 is peeled off may be adopted.

Next, a fifth embodiment of the present invention will be described.
The fifth embodiment differs from the first embodiment only in that a control means 240 is used instead of the control means 166. Control means 240 which is a known microcomputer having a CPU, ROM, RAM, etc.
Are provided in the control unit 10 of the stencil printing apparatus 1 in place of the control means 166, and the image reading unit 2, the sensors 15
2, 170, 171 and the operation panel 153, and receives control signals 166, 1 stored in the ROM.
Based on an operation program of the stencil printing apparatus 1 different from 69, 172, 173, the sheet feeding unit 3, the first plate making unit 4, the second plate making unit 5, the first plate discharging unit 6, the second plate discharging unit 7, the discharging plate Paper section 8,
The control of the printing unit 9 is performed.

Hereinafter, the operation of the stencil printing apparatus 1 according to the fifth embodiment will be described. When one or two originals are set on an original receiving table (not shown) by the operator and the master making start key 154 is pressed, the timer 1
The operation of 65 is stopped, and a time signal is output to the control means 240. The control means 240 reads the input time signal from the ROM
Is compared with the threshold value stored in the control means 166, 169,
As in the case of 172 and 173, the operation program for normal printing or the operation program for printing after leaving
Call from M. Here, since the operation at the time of normal printing is the same as that of the first embodiment, only the operation at the time of printing after leaving will be described.

When the plate making start key 154 is depressed, the plate cylinders 79 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized.
Inside the printers 9 and 80, the respective ink rollers 95 and 117 rotated by driving means (not shown) respectively oscillate in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
67, ink roller 9 via printed master 168
5 and the ink roller 117 are pressed against each other, and the plate cylinders 79 and 80 rotate in this state.

By this pressure contact, the ink, which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) and the viscosity of which has been reduced by standing, is reduced by the porous support of the printed masters 167 and 168. The ink is absorbed by the body and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and a mesh screen (not shown) are filled with new ink.

Each of the plate cylinders 79 and 80 is stopped at the home position after rotating the number of times previously stored in the control means 240. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the pressing operation is completed, the motor 147 is operated to rotate the plate cylinder 80 clockwise in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 58, and the plate cylinder 58 is moved. The printed master 168 wound on the outer peripheral surface of the tape 80 is peeled off. During this time, the motor 14
6 stops its operation, and the plate cylinder 79 is positioned at the home position. Thereafter, the plate cylinder 80 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 80 is completed.

After the plate discharging operation of the plate cylinder 80 is completed, each plate cylinder 79,
80 starts rotating at a low speed, and the solenoids 98 and 120 are energized again, and the plate cylinders 79 and 8 are turned on again.
Inside 0, each of the ink rollers 95 and 117, each of which is rotationally driven by a driving unit (not shown), starts swinging again.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 expand. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
Ink roller 95 and ink roller 11 via 67
7 are pressed against each other, and in this state, the plate cylinders 79 and 80 rotate.

[0204] By this pressure contact, the ink which has adhered to the porous support plate 83 and the mesh screen 89 and whose viscosity has been reduced by standing is absorbed by the porous support of the printed master 167. The ink, which has been attached to a mesh screen (not shown) and whose viscosity has been reduced by standing, adheres to the thermoplastic resin film of the printed master 167 and is removed from the plate cylinders 79 and 80, and the porous support plate 83 and the porous support plate Support plate 10
6. The mesh screen 89 and a mesh screen (not shown) are filled with new ink. In addition, unevenness of the density of the ink corresponding to the perforated portion of the printed master 168 remaining on the surface of the mesh screen (not shown) is leveled.

Each plate cylinder 79, 80 rotates at the number of times stored in the control means 240 in advance, and then stops at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be held again.

When the second pressing operation is completed, the motor 146 is operated to rotate the plate cylinder 79 in the counterclockwise direction in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 48. Then, the printed master 167 wound around the outer peripheral surface of the plate cylinder 79 is peeled off. During this time, the motor 147 stops operating, and the plate cylinder 80 is positioned at the home position. Thereafter, the plate cylinder 79 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 79 is completed.

After the plate cylinder 79 completes the plate discharging operation, the platen roller 36 and the pair of master transport rollers 38 and 39 start rotating, respectively, and the master roll 34 and the master 33 are rotated.
Is pulled out. The pulled-out master 33 passes through the thermal head 35, but at this time, the heating elements of the thermal head 35 do not generate heat, and the master 33 does not perform a plate making operation on the thermoplastic resin film.

The control means 2 determines that the leading end of the unmade master 33 has reached a predetermined position between the stage 86 and the clamper 90 due to the number of steps of a stepping motor (not shown) for driving the platen roller 36 to rotate.
When the judgment is made by 40, an operation signal is sent to the opening / closing means (not shown), and the clamper 90 rotates, so that the front end of the master 33 is held between the stage 86 and the clamper 90.

Thereafter, the plate cylinder 79 rotates clockwise in FIG. 1 at the same peripheral speed as the transport speed of the master 33, and
The operation of winding the third cylinder 79 on the plate cylinder 79 is performed. When the control means 240 determines that the conveyance of one plate has been completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 36 and the master conveyance roller pairs 38 and 39 is stopped, and the movable blade 37a rotates. It moves and the master 33 is disconnected. The cut master 33 is the plate cylinder 7
When the plate cylinder 79 reaches the home position again, the motor 146 is stopped by a command from the control means 240, the plate cylinder 79 is positioned, and the unprinted master 33 is supplied to the plate cylinder 79. The plate operation is completed.

After the plate cylinder 79 completes the plate discharging operation, the platen roller 43 and the master transport roller pairs 45 and 46 also start to rotate, and the master roll 41 moves to the master 40.
Is pulled out. The extracted master 40 is the master 3
Similarly to 3, the plate passes through the thermal head 42 without being made.

When the control means 240 determines that the leading end of the unmade master 40 has reached a predetermined position based on the number of steps of a stepping motor (not shown) for rotating the platen roller 43, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 114 rotates and the leading end of the master 40 is held between the stage unit and the clamper 114.

Thereafter, the plate cylinder 80 rotates counterclockwise in FIG. 1 at the same peripheral speed as the transport speed of the master 40, and the operation of winding the master 40 around the plate cylinder 80 is performed. When the control unit 240 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the platen roller 43 and the master conveyance roller pairs 45 and 46 are used.
Is stopped, and the movable blade 44a rotates and the master 40 is cut. The cut master 40 is pulled out by the rotation operation of the plate cylinder 80, and when the plate cylinder 80 reaches the home position again, the motor 147 is stopped by a command from the control unit 240 to position the plate cylinder 80, and the plate cylinder 80 is positioned. The plate feeding operation of the non-plate master 40 is completed.

When the plate cylinder 80 is positioned, each plate cylinder 7
9 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized, and the plate cylinders 79 and 8 are turned on.
Inside 0, each of the ink rollers 95 and 117 rotated by driving means (not shown) swings in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9. Mesh screen (not shown), unprinted master 3
3. The ink roller 95 and the ink roller 117 are pressed into contact with each other via the unprinted master 40.
9,80 rotates.

[0215] By this pressure contact, the ink whose viscosity has been reduced by standing and which has adhered to the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) has been removed from the unprinted masters 33 and 40. The ink is absorbed by the support and removed from the plate cylinders 79 and 80, and the porous support plate 83, the porous support plate 106, the mesh screen 89, and the mesh screen (not shown) are filled with new ink.

Further, due to this pressure contact, unevenness of the ink density corresponding to the perforated portions of the printed masters 167 and 168 remaining on the surface of the mesh screen 89 and the surface of the mesh screen (not shown) is eliminated. , 40 are alleviated by being absorbed by the porous support, and the ink density on each plate cylinder 79, 80 is made uniform.

Each of the plate cylinders 79 and 80 is stopped at the home position after rotating the number of times stored in the control means 240 in advance. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

When the third pressing operation is completed, the motor 146 operates to rotate the plate cylinder 79 in the counterclockwise direction in FIG. 1, and the moving means (not shown) operates to move the lower plate discharging member 48. Then, the unmade master 33 wound around the outer peripheral surface of the plate cylinder 79 is peeled off. During this time, the motor 147 stops operating, and the plate cylinder 80 is positioned at the home position. Thereafter, the plate cylinder 79 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 79 is completed.

After the plate cylinder 79 completes the plate discharging operation, each plate cylinder 79,
80 starts rotating at a low speed, and the solenoids 98 and 120 are energized again, and the plate cylinders 79 and 8 are turned on again.
Inside 0, each of the ink rollers 95 and 117, each of which is rotationally driven by a driving unit (not shown), starts swinging again.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9. Mesh screen (not shown), unmade master 4
0 and the ink roller 95 and the ink roller 117
And the plate cylinders 79 and 80 rotate in this state.

[0221] By this pressure contact, the ink which has adhered to the porous support plate 106 and the mesh screen (not shown) and whose viscosity has been reduced by standing is absorbed by the porous support of the unmade master 40. 83, the ink whose viscosity has been reduced by leaving it attached to the mesh screen 89 adheres to the thermoplastic resin film of the unmade master 40 and is removed from each plate cylinder 79, 80, and the porous support plate 83, Porous support plate 106,
The mesh screen 89 and a mesh screen (not shown) are filled with new ink. In addition, unevenness in the density of ink corresponding to the perforated portion of the printed master 167 remaining on the surface of the mesh screen 89 is leveled.

After the plate cylinders 79 and 80 have rotated the number of times previously stored in the control means 240, they stop at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be held again.

When the fourth pressing operation is completed, the motor 147 operates to rotate the plate cylinder 80 clockwise in FIG. 1, and the moving means (not shown) operates to move the lower plate discharging member 58. Then, the unmade master 40 wound around the outer peripheral surface of the plate cylinder 80 is peeled off. During this time, the motor 146 stops operating, and the plate cylinder 79 is positioned at the home position. Thereafter, the plate cylinder 80 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 80 is completed.

After the second plate discharging operation in each of the plate cylinders 79 and 80 is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected print mode. The timer 165 starts operating again. FIG. 21 shows a series of operations in the fifth embodiment. In the fifth embodiment, the plate discharging operation of the plate cylinder 80 is performed first, the second press-contact operation is performed in a state where the printed master 168 is separated, and then the plate discharging operation of the plate cylinder 79 is performed first. Although the fourth press-contact operation is performed in a state where the unprinted master 33 is peeled off, the plate discharging operation of the plate cylinder 79 is performed first and the printed master 167 is peeled off.
It is also possible to adopt a configuration in which the fourth press-contacting operation is performed, and then, the plate discharging operation of the plate cylinder 80 is performed first, and the unpressed master 40 is peeled off, and the fourth press-contacting operation is performed.

Next, a sixth embodiment of the present invention will be described.
The sixth embodiment differs from the first embodiment only in that a control unit 251 is used instead of the control unit 166. A control unit 251 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Are provided in the control unit 10 of the stencil printing apparatus 1 in place of the control means 166, and the image reading unit 2, the sensors 15
2, 170, 171 and the operation panel 153, and receives control signals 166, 1 stored in the ROM.
69, 172, 173, 240, based on an operation program of the stencil printing apparatus 1 different from that of the stencil printing machine 1, the sheet feeding unit 3, the first plate making unit 4, the second plate making unit 5, the first plate discharging unit 6, the second plate discharging unit 7. , The paper discharge unit 8 and the print unit 9 are controlled.

The operation of the stencil printing machine 1 according to the sixth embodiment will be described below. When one or two originals are set on an original receiving table (not shown) by the operator and the master making start key 154 is pressed, the timer 1
The operation of 65 is stopped, and a time signal is output to the control means 251. The control means 251 stores the input time signal in the ROM
Is compared with the threshold value stored in the control means 166, 169,
Similarly to 172, 173, and 240, the operation program at the time of normal printing or the operation program at the time of leaving printing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the first embodiment, only the operation at the time of printing after leaving will be described.

When the plate making start key 154 is pressed, the motor 147 is operated to rotate the plate cylinder 80 clockwise in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 58. Then, the printed master 168 wound around the outer peripheral surface of the plate cylinder 80 is peeled off. During this time, the motor 146 stops operating, and the plate cylinder 79 is positioned at the home position. Thereafter, the plate cylinder 80 is rotated to the home position and stopped, and the plate cylinder 80 is stopped.
Is completed.

After the plate discharging operation of the plate cylinder 80 is completed, each plate cylinder 79,
80 starts rotating at a low speed, and the solenoids 98, 120 are energized, and the ink rollers 95, 117, which are rotationally driven by driving means (not shown), swing inside the plate cylinders 79, 80, respectively. To start.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 bulges outward, respectively, and the porous support plate 83 and the porous support plates 83 and 106 are expanded. Support plate 106, mesh screen 8
9, mesh screen not shown, printed master 1
Ink roller 95 and ink roller 11 via 67
7 are pressed against each other, and in this state, the plate cylinders 79 and 80 rotate.

[0230] By this pressure contact, the ink which has adhered to the porous support plate 83 and the mesh screen 89 and whose viscosity has been reduced by standing is absorbed by the porous support of the printed master 167. The ink, which has adhered to the mesh screen (not shown) and whose viscosity has been reduced by standing, adheres to the thermoplastic resin film of the printed master 167 and is removed from the plate cylinders 79, 80, and the porous support plate 83, the porous support plate 83, Support plate 10
6. The mesh screen 89 and a mesh screen (not shown) are filled with new ink. In addition, unevenness of the density of the ink corresponding to the perforated portion of the printed master 168 remaining on the surface of the mesh screen (not shown) is leveled.

The plate cylinders 79 and 80 are rotated at the number of times stored in the control means 251 in advance and then stopped at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be held again.

After the pressing operation is completed, the motor 146 is operated to rotate the plate cylinder 79 in the counterclockwise direction in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 48, and the plate cylinder is moved. The printed master 167 wound around the outer peripheral surface of 79 is peeled off. During this time, the motor 147 stops operating, and the plate cylinder 80 is positioned at the home position. Thereafter, the plate cylinder 79 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 79 is completed.

After the plate discharging operation of the plate cylinder 79 is completed, the plate making operation is performed in the same manner as in the normal printing in the selected print mode.
The plate feeding operation and the printing operation are sequentially performed, and after the printing operation is completed, the timer 165 starts operating again. FIG. 22 shows a series of operations in the sixth embodiment. In the sixth embodiment, the plate discharging operation of the plate cylinder 80 is performed first, and the press-contact operation is performed in a state where the printed master 168 is separated. However, the plate discharging operation of the plate cylinder 79 is performed first. The press-contact operation may be performed with the printed master 167 peeled off.

Next, a seventh embodiment of the present invention will be described.
The seventh embodiment differs from the first embodiment only in that a control means 252 is used instead of the control means 166. A control unit 252 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Are provided in the control unit 10 of the stencil printing apparatus 1 in place of the control means 166, and the image reading unit 2, the sensors 15
2, 170, 171 and the operation panel 153, and receives control signals 166, 1 stored in the ROM.
69, 172, 173, 240, 251 based on an operation program of the stencil printing machine 1 which is different from the stencil printing machine 1,
The first plate making unit 4, the second plate making unit 5, the first plate discharging unit 6, the second plate discharging unit 7, the sheet discharging unit 8, and the printing unit 9 are controlled.

The operation of the stencil printing machine 1 according to the seventh embodiment will be described below. When one or two originals are set on an original receiving table (not shown) by the operator and the master making start key 154 is pressed, the timer 1
The operation of 65 stops, and a time signal is output to the control means 252. The control means 252 stores the input time signal in the ROM
Is compared with the threshold value stored in the control means 166, 169,
As in the case of 172, 173, 240, and 251, the operation program for normal printing or the operation program for printing after standing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the first embodiment, only the operation at the time of printing after leaving will be described.

When the plate making start key 154 is pressed, the motors 146 and 147 are operated to rotate the plate cylinders 79 and 80 in opposite directions, and the moving means (not shown) is operated to move the lower plate discharging members. 48, 58 are moved, and each printed master 1 is
67 and 168 are peeled off. Thereafter, each plate cylinder 79, 80
Rotates to the home position and stops, and the plate discharging operation is completed.

After the plate discharging operation is completed, the platen roller 36 and the master transport roller pairs 38 and 39 start rotating, and the master 33 is pulled out from the master roll 34.
The pulled-out master 33 passes through the thermal head 35, but at this time, the heating elements of the thermal head 35 do not generate heat, and the master 33 does not perform a plate making operation on the thermoplastic resin film.

The control means 2 determines that the leading end of the unmade master 33 has reached a predetermined position between the stage 86 and the clamper 90 due to the number of steps of a stepping motor (not shown) for driving the platen roller 36 to rotate.
When the judgment is made at 52, an operation signal is sent to the opening / closing means (not shown), and the clamper 90 rotates, and the stage section 86 and the clamper 90 hold the leading end of the master 33.

Thereafter, the plate cylinder 79 rotates clockwise in FIG. 1 at the same peripheral speed as the transport speed of the master 33,
The operation of winding the third cylinder 79 on the plate cylinder 79 is performed. When the control unit 252 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 36 and the master conveyance roller pairs 38 and 39 is stopped, and the movable blade 37a is rotated. It moves and the master 33 is disconnected. The cut master 33 is the plate cylinder 7
When the plate cylinder 79 reaches the home position again, the motor 146 is stopped by a command from the control means 252 to position the plate cylinder 79, and the unprinted master 33 is supplied to the plate cylinder 79. The plate operation is completed. During this time, the motor 147 has stopped operating,
The plate cylinder 80 is positioned at the home position.

When the plate cylinder 79 is positioned, each plate cylinder 7
9 and 80 start rotating at a low speed, and the solenoids 98 and 120 are energized, and the plate cylinders 79 and 8 are turned on.
Inside 0, each of the ink rollers 95 and 117 rotated by driving means (not shown) swings in the same manner as in normal printing.

When the outer peripheral surface of each of the ink rollers 95 and 117 is pressed against each of the porous support plates 83 and 106, each of the porous support plates 83 and 106 swells outward, respectively. Support plate 106, mesh screen 8
9. Mesh screen (not shown), unprinted master 3
3 and the ink roller 95 and the ink roller 117
And the plate cylinders 79 and 80 rotate in this state.

As a result of this pressure contact, the ink which has adhered to the porous support plate 83 and the mesh screen 89 and whose viscosity has been reduced by standing is absorbed by the porous support of the unmade master 33, and the porous support plate 106 The ink, which has adhered to the mesh screen (not shown) and has decreased in viscosity due to being left, adheres to the thermoplastic resin film of the unmade master 33 and is removed from each plate cylinder 79, 80, and the porous support plate 83, Porous support plate 106,
The mesh screen 89 and a mesh screen (not shown) are filled with new ink. The printed master 168 remaining on the surface of the mesh screen (not shown)
The unevenness of the density of the ink corresponding to the perforated portion is equalized.

Each plate cylinder 79, 80 rotates at the number of times stored in the control means 252 in advance, and then stops at the home position. When the power to the solenoids 98 and 120 is cut off before the plate cylinders 79 and 80 stop, the stoppers 99 and 121 return to the positions shown in FIG. 7, respectively, and the ink rollers 95 and 117 Will be retained.

After the pressing operation is completed, the motor 146 is operated to rotate the plate cylinder 79 in the counterclockwise direction in FIG. 1, and the moving means (not shown) is operated to move the lower plate discharging member 48, and the plate cylinder is moved. The unmade master 33 wound around the outer peripheral surface of the plate 79 is peeled off. During this time, the motor 147 stops operating, and the plate cylinder 80 is positioned at the home position. Thereafter, the plate cylinder 79 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 79 is completed.

After the plate discharging operation of the plate cylinder 79 is completed, the plate making operation is performed in the same manner as in the normal printing in the selected print mode.
The plate feeding operation and the printing operation are sequentially performed, and after the printing operation is completed, the timer 165 starts operating again. FIG. 23 shows a series of operations in the seventh embodiment. In the seventh embodiment, an example is shown in which the press-contact operation is performed in a state where the unmade master 33 is wound around the plate cylinder 79. However, in a state where the unmade master 40 is wound around the plate cylinder 80. It may be configured to perform a pressing operation.

In the stencil printing machine 1 used in the first to seventh embodiments, the ink supply means 84 and the ink supply means 10
7 is movable, but one of the ink supply means is fixed in a state where the outer peripheral surface of the ink roller is close to the inner peripheral surface of the porous support plate, and the other ink supply means is fixed. By moving the stencil printing apparatus, a stencil printing apparatus having a configuration in which both porous support plates can be brought into contact can be used. In this case, similarly to the ink supply means 84, the ink supply means on the moving side is configured to be swingable by a support shaft provided in a direction orthogonal to the support shaft 82 or the support shaft 105.

In the printing operation after standing in the first to seventh embodiments, the motors 146 and 147 are operated when the plate cylinders 79 and 80 are pressed against each other, and the plate cylinders 79 and 80 are respectively operated. Although an example in which the rotary drive is performed has been described, a similar effect can be obtained even when only one of the plate cylinders 79 and 80 is rotated to drive only one of the plate cylinders 79 and 80 to operate the other motor. Can be.

Further, each of the printed masters 167 and 168 used in the first to seventh embodiments includes the one used when double-sided printing was performed in the previous printing (both plates were made). The one used when one-sided printing was performed in the previous printing (one of which is plate-making and the other is not made) is included.

FIG. 24 is a schematic diagram of a stencil printing apparatus 174 used in the eighth to fourteenth embodiments of the present invention. In the figure, the stencil printing apparatus 174 includes an image reading unit 175, a paper feeding unit 176, a first plate making unit 177, a second plate making unit 241, a first plate discharging unit 178, a second plate discharging unit 179, a sheet discharging unit 180, and a printing unit. It mainly comprises a unit 181 and a control unit 182.

The image reading unit 175 disposed on the upper part of the housing 183 has a contact glass on which an original is placed, a pair of original transport rollers for transporting the original, and a guide for the original to be transported. Guide plate, a document transport belt for transporting the document along the contact glass, a switching plate for switching the discharge direction of the read document, a reflecting mirror and a fluorescent lamp for scanning and reading the document image, and focusing the scanned image Lens, CCD for processing the focused image
It mainly comprises an image sensor and the like.

A paper feed unit 176 disposed at the lower center of the housing 183 includes a paper feed tray 184 for loading the print paper P, a paper feed roller 185 for feeding the print paper P one by one, and a separation pad 186. It mainly includes guide plates 187 and 188 for guiding the fed printing paper P, a pair of registration rollers 189 for feeding the printed paper P after holding the leading edge of the fed printing paper P, and then feeding the paper.

The first plate making section 177 disposed at the center of the right side of the housing 183 has a master roll 191 formed by winding a master 190 in a roll shape, a thermal head 192, a platen roller 193, cutting means 194, a master transport. It is mainly composed of a roller pair 195 and the like.

The second plate disposed below the first plate making section 177
The plate making unit 241 mainly includes a master roll 243 formed by winding a master 242 into a roll, a thermal head 244, a platen roller 245, a cutting unit 246, a pair of master transport rollers 247, and the like.

The first plate discharging section 178 disposed at the upper center portion of the housing 183 mainly includes an upper plate discharging roller 196, a lower plate discharging roller 197, a plate discharging box 198, and the like. The upper plate discharging roller 196 is driven to rotate clockwise in FIG. 24 by a driving unit (not shown), and the lower plate discharging roller 197 is driven to rotate counterclockwise in FIG. 24 by a driving unit (not shown). 24, and the outer peripheral surface is selectively moved to a position where the outer peripheral surface comes into contact with the outer peripheral surface of the plate cylinder 212 described later. The plate discharge box 198 for storing the printed master 199 peeled off from the outer peripheral surface of the plate cylinder 212 is provided in the housing 18.
3 is provided detachably.

The second plate discharging section 179 disposed on the lower left side of the housing 183 includes an upper plate discharging roller 200, a lower plate discharging roller 201, and a plate discharging box 20 similarly to the first plate discharging section 178.
It mainly consists of 2 etc.

The upper plate discharging roller 200 and the lower plate discharging roller 201 are composed of the upper plate discharging roller 196 and the lower plate discharging roller 1.
As in the case of 97, each is rotationally driven by a driving means (not shown). The lower plate discharging roller 201 is selectively moved by a moving means (not shown) to a position shown in FIG. 24 and a position where the outer peripheral surface comes into contact with the outer peripheral surface of the plate cylinder 213 described later. The plate discharging box 202 for storing the printed master 203 peeled from the outer peripheral surface of the plate cylinder 213 is a housing 18.
3 is provided detachably.

A paper discharge unit 180 is provided between the first plate discharge unit 178 and the second plate discharge unit 179. Paper output unit 180
Is mainly composed of peeling claws 204 and 205, a paper discharge conveyance member 206, and a paper discharge tray 207.

The peeling claw 204 for peeling the printed printing paper P from the outer peripheral surface of the plate cylinder 213 is rotatably supported by a sheet discharge conveying member 206 described later, and the tip thereof is fixed to the plate cylinder 2.
13 is provided so as to be able to advance and retreat with respect to the outer peripheral surface. The peeling claw 205 is rotatably supported by a side plate (not shown) of the housing 183, and its tip is provided to be able to advance and retreat with respect to the outer peripheral surface of the plate cylinder 212. Drive roller 208, driven roller 209, endless belt 210, suction fan 211
The paper discharge conveyance member 206 composed of the suction fan 21
1, the printing paper P is sucked onto the endless belt 210 by the suction force, and the printing paper P is
Is transported in the direction of the arrow in FIG. The discharge tray 207 stacks the printing paper P conveyed by the discharge conveyance member 206 on its upper surface.

At the center of the housing 183, a printing unit 181 is provided. The printing unit 181 mainly includes a plate cylinder 212 as a first plate cylinder, a plate cylinder 213 as a second plate cylinder, a plate cylinder driving unit 214, a contact / separation unit 221 and the like.

The plate cylinder 212 is provided rotatably about a support shaft 215, and has a porous support plate (not shown), a mesh screen (not shown) provided on the outer peripheral surface thereof, and an openable / closable provided on a stage (not shown). The clamper 216
An ink supply means 217 is provided inside.
The support shaft 215 is movably supported by contact / separation means 221 described later.

The ink supply means 217 is provided for the ink roller 2.
18, doctor roller 219, ink supply pipe 22
It is mainly composed of 0 and the like. Ink roller 218
Are rotatably supported between side plates (not shown) in the plate cylinder 212, and are rotationally driven in the same direction as the plate cylinder 212 by driving means (not shown). A doctor roller 219 is provided near the ink roller 218. A doctor roller 219 whose outer peripheral surface is arranged close to the outer peripheral surface of the ink roller 218 is rotatably supported between side plates (not shown) in the plate cylinder 212, and is driven in a direction opposite to the ink roller 218 by a driving unit (not shown). It is driven to rotate. Above the ink roller 218, the ink in the ink pack provided outside the plate cylinder 212 is filled with ink.
An ink supply pipe 220 leading to the inside is provided. The ink supplied through the ink supply pipe 220 is supplied to the outer peripheral surface of the ink roller 218 and the doctor roller 219.
In the vicinity of the outer peripheral surface of the ink, a wedge-shaped ink reservoir 21 is formed.
9a is formed.

A plate cylinder 213 is provided below the plate cylinder 212. The plate cylinder 213 is rotatably provided around a support shaft 222. Like the plate cylinder 212, the plate cylinder 213 is provided on an outer peripheral surface of a porous support plate (not shown), a mesh screen (not shown), and a stage (not shown). Openable and closable clamper 223 and ink supply means 224 therein.
Is provided. The support shaft 222 is attached between side plates (not shown) of the housing 183.

The ink supply means 224 includes an ink roller 225, a doctor roller 226, and an ink supply pipe 2.
27 mainly. Ink roller 225
Are rotatably supported between side plates (not shown) in the plate cylinder 213, and are rotationally driven in the same direction as the plate cylinder 213 by driving means (not shown). The doctor roller 226 disposed between the side plates (not shown) in the plate cylinder 213 near the ink roller 225
The ink roller 225 is arranged in close proximity to the outer peripheral surface of the ink roller 225 and is driven to rotate in the opposite direction to the ink roller 225 by driving means (not shown). Above the doctor roller 226, an ink supply pipe 227 that guides ink in an ink pack provided outside the plate cylinder 213 into the plate cylinder 213 is provided. The ink supplied through the ink supply pipe 227 forms a wedge-shaped ink reservoir 226a near the outer peripheral surface of the ink roller 225 and the outer peripheral surface of the doctor roller 226.

Below the second plate discharging portion 179, a plate cylinder driving means 214 is provided. The plate cylinder driving means 214 is mainly composed of two motors (not shown) which are rotatable in the normal and reverse directions and are rotationally driven in mutually opposite directions, similarly to the plate cylinder driving means 81. The output of each motor is Pulley attached to the output shaft of the printer, toothed pulleys attached to flanges (not shown) provided at the side ends of the plate cylinders 212 and 213, and a timing belt stretched between the toothed pulleys. It is transmitted to each plate cylinder 212, 213,
As a result, the plate cylinders 212 and 213 are rotated in the opposite directions in synchronization with each other.

In the vicinity of the plate cylinder 212, a contact / separation means 221 is provided. As shown in FIG. 25, the contact / separation means 221 mainly includes swing arms 228, 228, a cam 229, and a holding means 230.

The swing arms 228, 228 having a long arm 228a and a short arm 228b and formed in a bent shape at the bent portion 228c are formed by flanges (not shown) provided at both ends of the plate cylinder 212. Each is arranged outside. Each swing arm 228, 228
c and 228 c are integrally connected by a swing shaft 231, and the swing shaft 231 is rotatably supported by a side plate (not shown) of the housing 183. Each long arm 228a, 2
A support shaft 215 is fixed to substantially the center of 28a, and a rotatable cam follower 2 is attached to one end of one short arm 228b.
32 are attached.

At the end of each of the long arms 228a, 228a, a tension spring 233 for biasing each of the swing arms 228, 228 counterclockwise in FIG. , 233 are attached respectively. The other end of each tension spring 233, 233 is
83 are fixed to side plates (not shown).

The support shaft 22 is located below the cam follower 232.
A cam 229 rotatably supported by 9a is provided. A cam 229 having a convex portion on its outer peripheral portion that comes into contact with the cam follower 232 receives rotational force from the plate cylinder driving means 214 and is driven to rotate in synchronization with the plate cylinder 212. The position of the convex portion of the cam 229 is determined so that obstacles such as the clampers 216 and 223 provided on the peripheral surfaces of the plate cylinders 212 and 213 do not interfere with each other.
When the plate cylinder 212 is positioned at the home position, it comes into contact with the cam follower 232.

Further, the cam 229 has a plate cylinder 212 and a plate cylinder 213 when its convex portion comes into contact with the cam follower 232.
Is formed at a height at which a gap of about 3 to 5 mm is generated between the swing arm 22 and the outer shape other than the convex portion by the urging force of the tension spring 233 when the contact of the cam follower 232 is released.
8 rotates counterclockwise in FIG.
2 and the outer circumferential surface of the plate cylinder 213 are pressed against each other,
It is formed in a shape separated from the cam follower 232.

At the upper left of the swing arm 228, the holding means 2
30 are provided. The holding means 230 mainly includes a holding arm 234 and a solenoid 235.
The holding arm 234 has a support shaft 234a at its center.
And has a hook-shaped engaging claw 234b at one end. The locking claw 234b can engage with a notch 228d formed at the tip of one long arm 228a. The other end of the holding arm 234 is connected to the plunger 235a of the solenoid 235. One end of a tension spring (not shown) is attached to the holding arm 234, and a rotation biasing force is applied to the holding arm 234 in a counterclockwise direction in FIG. 25 around the support shaft 234a.

An operation panel 153 having a timer 165 inside, similar to the stencil printing apparatus 1, is provided on the upper front surface of the housing 183. A control unit 182 is provided at the lower right side of the housing 183. The control unit 182 controls the CP
It is mainly composed of a control means 236 which is a known microcomputer having U, ROM, RAM, etc.
The operation of the stencil printing device 174 is controlled.

FIG. 26 is a control block diagram of the control means 236 used in the eighth embodiment. Control means 2
36, an image data signal from the image reading unit 175, a control signal from the operation panel 153, and a time signal from the timer 165;
4, the first plate making unit 177, the second plate making unit 241, the first plate discharging unit 178, the second plate discharging unit 179, the sheet discharging unit 180, and the plate cylinder driving unit 21 based on the operation program of No. 4.
4 and a printing unit 181 having a solenoid 235.

The operation of the stencil printing apparatus 174 will be described below based on the above configuration. Prior to the printing operation, a printing mode switching key (not shown) is pressed by an operator to select a printing mode.

The operator sets one or two originals on an original receiving table (not shown) and presses the master making start key 154. At this time, the operation of the timer 165 that has been operating since the end of the previous printing operation is stopped, and this time signal is output to the control unit 236. The control means 236, having received the time signal, compares the time signal with a threshold value stored in the ROM. If the time signal exceeds the threshold value, the control means 236 regards the printing as being after leaving the apparatus. Call. If the time signal is below the threshold,
Call the operation program for normal printing.

First, the operation during normal printing when the duplex printing mode is selected will be described. When the plate making start key 154 is pressed, the plate cylinder driving means 214 is operated to rotate the plate cylinder 212 in the counterclockwise direction in FIG. 24, and the moving means (not shown) is operated to move the lower plate discharging roller 197. The printed master 199 wrapped around the outer peripheral surface of the plate cylinder 212 includes an upper plate discharging roller 196 and a lower plate discharging roller 1.
The printed master 199 is separated and conveyed by the master 97 and is stored in the plate discharge box 198. At the same time as the rotation of the plate cylinder 212, the plate cylinder 213 rotates clockwise in FIG. 24, and the moving means (not shown) operates to move the lower plate discharging roller 201, so that the plate cylinder 213 is wound around the outer peripheral surface of the plate cylinder 213. The printed master 203 is separated from the outer peripheral surface of the plate cylinder 213 by the upper plate discharging roller 200 and the lower plate discharging roller 201, and is conveyed into the plate discharging box 202. Thereafter, the plate cylinders 212 and 213 rotate to the plate feeding standby position and stop, and the plate discharging operation is completed.

The image reading section 175 performs an operation of reading a document image. The read document image is photoelectrically converted and then input to an A / D converter (not shown) in the housing 183. The document from which the image has been read is discharged to a document tray (not shown).

In parallel with the original reading operation, the first plate making section 17
At 7, a plate making operation is performed. After the plate discharging operation is completed, the platen roller 193 and the master transport roller pair 195 start rotating, and the master roll 191 to the master 190 are rotated.
Is pulled out. When the master 190 is pulled out, it passes through the thermal head 192 and is subjected to various processes by an A / D converter and other plate making boards (not shown). The film is perforated and made.

When the control means 236 determines that the leading end of the master 190 has reached a predetermined position between the stage unit (not shown) and the clamper 216 based on the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 193, An operation signal is sent to opening / closing means (not shown), the clamper 216 rotates, and the leading end of the master 190 is held.

Thereafter, the plate cylinder 212 rotates clockwise in FIG. 24 at the same peripheral speed as the transfer speed of the master 190, and the operation of winding the master 190 around the plate cylinder 212 is performed. When the control unit 236 determines that plate making for one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 193 and the master transport roller pair 195 is stopped, and the cutting unit 194 is operated to operate the master. 190 is cut. Disconnected master 19
0 is pulled out by the rotation of the plate cylinder 212,
When 12 reaches the home position again, the control means 23
6, the cylinder driving means 214 stops.
The plate cylinder 212 is positioned.

After reading the first document, the remaining one document is read in the same manner as the previous document, and then discharged to a document tray (not shown). In this embodiment, images are read from two originals, but a configuration in which images are read from both sides of one original can be adopted as in the stencil printing apparatus 1.

In parallel with the reading operation of the second original, the plate making operation is performed in the second plate making section 241 in the same manner as in the first plate making section 177. The master 242, on which the thermoplastic resin film is made by the thermal head 244, is transferred to the plate cylinder 213 by a platen roller 245 and a master transport roller pair 247.
The control unit 23 determines that the leading end of the master 242 has reached a predetermined position based on the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 245.
When the judgment is made in 6, the operation signal is sent to the opening / closing means (not shown), the clamper 223 rotates, and the tip of the master 242 is clamped.

Thereafter, the plate cylinder 213 rotates counterclockwise in FIG. 24 at the same peripheral speed as the transport speed of the master 242,
The operation of winding the master 242 around the plate cylinder 213 is performed. When the control unit 236 determines that plate making for one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 245 and the master transport roller pair 247 is stopped, and the cutting unit 246 is operated. Master 242 is disconnected. Disconnected Master 2
42 is pulled out by the rotation operation of the plate cylinder 213, and when the plate cylinder 213 reaches the home position again, the control means 2
In response to a command from 36, the plate cylinder driving means 214 stops, and the plate cylinder 213 is positioned.

At the same time as the plate feeding operation to each of the plate cylinders 212 and 213 is completed, the sheet feeding roller 185 rotates and the plate cylinder driving means 214 starts operating again, and the printing stacked on the sheet feeding tray 184 is started. The uppermost sheet of the sheet P is separated and fed toward the registration roller pair 189, and the plate cylinders 212 and 213 start rotating at a low speed. The printing paper P, which has been separated and fed and the leading end of which is held by a pair of registration rollers 189, is rotated by the registration roller pair 189 at a predetermined timing, so that each of the plate cylinders 212 and 21 is rotated.
It is fed between three.

On the other hand, in synchronization with the rotation of each of the plate cylinders 212 and 213, a rotational force is transmitted from the plate cylinder drive means 214 to rotate the cam 229 and to energize the solenoid 235. When the solenoid 235 is energized and the plunger 235a is sucked, the holding arm 234 rotates clockwise in FIG. 25, and the engagement between the locking claw 234b and the notch 228d is released. And the cam 22
As the convex portion moves with the rotation of the cam 9, the cam 2
The contact state between the cam follower 29 and the cam follower 232 is released, and the swing arms 228, 228 rotate counterclockwise in FIG. 25 around the swing shaft 231 by the urging force of the tension spring 233, and the plate cylinder 212 is moved. Rocks.

The printing paper P is fed from the registration roller pair 189 toward the space between the plate cylinders 212 and 213 with a slight delay from the swinging operation of the plate cylinder 212. As a result, the porous support plate (not shown) of the plate cylinder 212 and the porous support plate (not shown) of the plate cylinder 213 come into pressure contact with each other via the respective mesh screens, the master 190, the master 242, and the printing paper P. The print image is transferred to the printer.

Printing paper P on which print images are transferred on both sides
Is released from the plate cylinder 21 by the peeling nail 204 or the peeling nail 205.
The sheet 3 is peeled off from the outer peripheral surface of the plate cylinder 212, conveyed by a sheet discharge conveying member 206, and discharged onto a sheet discharge tray 207.

After the printing, the plate cylinders 212 and 213 continue to rotate. Then, the plate cylinders 212 and 213 rotate to the home position, and the convex portion of the cam 229 is
2 again, the power supply to the solenoid 235 is cut off, the holding arm 234 is rotated by the urging force of a tension spring (not shown) and returns to the position shown in FIG. 25, and the plate attaching operation is completed.

After the printing operation is completed and the stencil printing apparatus 174 is in the printing standby state, when the test printing key 156 is pressed by the operator, the uppermost one on the paper feed tray 184 is pressed in the same manner as the printing operation. The sheet of printing paper P is
5, the tip of which is held by the pair of registration rollers 189, a command is sent from the control means 236, and the plate cylinder driving means 214 starts operating, and the plate cylinders 212 and 213 are driven to rotate at high speed. You. The registration roller pair 189 feeds the printing paper P between the plate cylinders 212 and 213 rotating at a high speed at the same timing as the plate attaching operation. The fed printing paper P is transferred with a print image on both sides thereof, is separated from the outer peripheral surface of the plate cylinder 213 or the plate cylinder 212 by the separation claw 204 or 205, and is conveyed by the sheet discharge conveyance member 206. Output tray 207
Is discharged on top. Each plate cylinder 212, 213 returns to the home position again, and the test printing operation is completed.

The test printing confirms the density and position of the print image, adjusts these using various keys on the operation panel 153, performs test printing again, and then uses the numeric keypad 158 to display the number of prints on the display device 163. And print speed setting key 1
When the printing speed is set at 61 and the printing start key 155 is pressed, the printing paper P is continuously fed from the paper feeding unit 176, and the plate cylinders 212 and 213 are driven at high speed while the solenoid 235 is energized. , And the printing operation is performed by repeating the contacting and separating operations.
When the printing of the set number of prints is completed, the timer 165 starts operating again.

Next, the operation during normal printing when the one-sided printing mode is selected will be described. When one document is set on a document receiving table (not shown) and the plate making start key 154 is pressed, the plate cylinders 212 and 213 are placed in the first plate discharging unit 178 and the second plate discharging unit 179 in the same manner as in the duplex printing mode. A plate discharging operation for peeling and discarding the used masters 199 and 203 from the outer peripheral surface of the document is performed, and an image reading unit 175 performs a document image reading operation.

A plate making operation is performed in parallel with the original reading operation. In the first plate making section 177, a plate making operation is performed in the same manner as in the double-sided printing mode, and the plate making master 190 is transferred to the plate cylinder 212.
The plate making operation is not performed in the second plate making section 241, and an unmade master 242 is wound on the outer circumferential surface of the plate cylinder 213.

After the plate feeding operation to each of the plate cylinders 212 and 213 is completed, one sheet of printing paper P is fed from the paper feeding unit 176, and each of the plate cylinders 212 and 213 starts rotating at a low speed. The printing paper P is fed between the plate cylinders 212 and 213 after being timed by the pair of registration rollers 189.

Each of the plate cylinders 212 and 213 and the cam 229 starts rotating, and at the same time, the solenoid 235 is energized, and the plate cylinder 212 swings.
The print image is transferred to the print paper P by the print paper P being held therebetween. At this time, since the master 242 is not yet made, the image made on the master 190 is transferred to the printing paper P only on the upper surface side. The printing paper P on which the print image has been transferred to the upper surface is peeled off from the outer peripheral surface of the plate cylinder 212 by the peeling claw 205, conveyed by the paper discharge conveyance member 206, and discharged onto the paper discharge tray 207.

After the plate cylinders 212 and 213 are stopped at the home position and the printing operation is completed, the trial printing key 15 is pressed.
6 is pressed, test printing is performed in the same manner as described above, and thereafter, the printing operation is performed by pressing the print start key 155. When the printing of the set number of prints is completed, the timer 165 starts operating again.

Next, the operation at the time of printing after standing will be described. When the plate making start key 154 is pressed, each plate cylinder 21 is pressed.
2, 213 and the cam 229 start rotating at a low speed, and the solenoid 235 is energized.
2 swings in the same manner as during normal printing.

When the plate cylinder 212 is pressed against the plate cylinder 213, the ink whose viscosity has been reduced by standing and which has adhered to each of the porous support plates and each of the mesh screens is reduced by the porous support of each of the printed masters 199 and 203. And the ink is removed from the plate cylinders 212 and 213, and each porous support plate and each mesh screen are filled with new ink.

Each plate cylinder 212, 213 is provided with a control means 236.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the pressing operation is completed, the plate cylinder driving means 21
4, the plate cylinders 212 and 213 are driven to rotate in opposite directions, and the moving means (not shown) is operated to move the lower plate discharging rollers 197 and 201 and the plate cylinders 21 and 213 are moved.
2, 213 from the outer peripheral surface of each printed master 199, 20
3 is peeled off. Thereafter, the plate cylinders 212 and 213 rotate to the home position and stop, and the plate discharging operation is completed.

After the plate discharging operation is completed, the platen roller 193
And the master transport roller pair 195 start rotating, and the master 190 is pulled out from the master roll 191. The pulled out master 190 is a thermal head 192.
However, at this time, the heating element of the thermal head 192 does not generate heat, and the master 190 does not perform the plate making operation on the thermoplastic resin film.

The control means 236 determines that the leading end of the unprinted master 190 has reached a predetermined position between the stage unit (not shown) and the clamper 216 based on the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 193. When it is determined, an operation signal is sent to the opening / closing means (not shown), and the clamper 216 rotates, and the master 1
90 are pinched.

Thereafter, the plate cylinder 212 rotates clockwise in FIG. 24 at the same peripheral speed as the transfer speed of the master 190, and the operation of winding the master 190 around the plate cylinder 212 is performed. When the control unit 236 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 193 and the master conveyance roller pair 195 is stopped, and the cutting unit 194 is operated. Master 190 is disconnected. Disconnected master 1
90 is pulled out by the rotation of the plate cylinder 212,
When 2 reaches the home position again, the control means 236
In response to a command from the printer, the plate cylinder driving means 214 stops, the plate cylinder 212 is positioned, and the plate feeding operation of the unprinted master 190 to the plate cylinder 212 is completed.

After the plate discharging operation is completed, the platen roller 245
And the master transport roller pair 247 also start rotating, and the master 242 is pulled out from the master roll 243. Like the master 190, the drawn-out master 242 passes through the thermal head 244 without making a plate.

When the control means 236 determines that the leading end of the unmade master 242 has reached a predetermined position based on the number of steps of a stepping motor (not shown) for rotating the platen roller 245, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 223 rotates, and the leading end of the master 242 is clamped.

Thereafter, the plate cylinder 213 rotates counterclockwise in FIG. 24 at the same peripheral speed as the transport speed of the master 242,
The operation of winding the master 242 around the plate cylinder 213 is performed. When the control unit 236 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 245 and the master conveyance roller pair 247 is stopped, and the cutting unit 246 is operated. Master 242 is disconnected. Disconnected Master 2
42 is pulled out by the rotation of the plate cylinder 213,
When 3 reaches the home position again, the control means 23
6, the plate cylinder driving means 214 is stopped, the plate cylinder 213 is positioned, and the plate feeding operation of the unprinted master 242 to the plate cylinder 213 is completed.

When the plate cylinder 213 is positioned, each plate cylinder 2
12, 213 and the cam 229 start rotating at a low speed, respectively, and power is supplied to the solenoid 235, so that the plate cylinder 212 swings in the same manner as during normal printing. And plate cylinder 2
When the plate 12 is pressed against the plate cylinder 213, the ink which has adhered to each of the porous support plates and each of the mesh screens and whose viscosity has been reduced by standing is absorbed by the porous supports of the unprinted masters 190 and 242, and At the same time, the porous support plate and each mesh screen are filled with new ink.

Further, due to this pressure contact, each printed master 199, 203 remaining on the surface of each mesh screen.
The ink density unevenness corresponding to the perforated portion is reduced by the ink being absorbed by the porous supports of the unprinted masters 190 and 242, and the ink density on each plate cylinder 212 and 213 is made uniform. .

Each plate cylinder 212, 213 is provided with a control means 236.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the pressing operation is completed, the plate cylinder driving means 21
4, the plate cylinders 212 and 213 are driven to rotate in opposite directions, and the moving means (not shown) is operated to move the lower plate discharging rollers 197 and 201 and the plate cylinders 21 and 213 are moved.
2, 213, unprinted masters from the outer peripheral surface
Is peeled off. After that, the plate cylinders 212 and 213 rotate to the home position and stop, and the second plate discharging operation is completed.

After the second plate discharging operation is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected print mode, and the timer 165 starts operating again after the printing operation is completed. I do. A series of operations in the eighth embodiment is similar to the series of operations in the first embodiment.

Next, a ninth embodiment of the present invention will be described.
The ninth embodiment differs from the eighth embodiment only in that a control unit 237 is used instead of the control unit 236. A control unit 237 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
The control unit 182 of the stencil printing apparatus 174
The stencil printing apparatus 17 receives signals from the image reading unit 175 and the operation panel 153, and is stored in the ROM and is different from the control unit 236.
Based on the operation program of No. 4, the control of the sheet feeding unit 176, the first plate making unit 177, the second plate making unit 241, the first plate discharging unit 178, the second plate discharging unit 179, the sheet discharging unit 180, and the printing unit 181 are performed.

Hereinafter, the operation of the stencil printing apparatus 174 in the ninth embodiment will be described. When one or two documents are set on a document tray (not shown) by the operator and the plate making start key 154 is pressed, the operation of the timer 165 is stopped, and a time signal is output to the control means 237. The control means 237 outputs the input time signal to the RO
The operation program at the time of normal printing or the operation program at the time of leaving printing is read from the ROM in the same manner as the control unit 236 by comparing with the threshold value stored in M. Here, since the operation at the time of normal printing is the same as that of the eighth embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 154 is pressed, the plate cylinders 212 and 213 and the cam 229 start rotating at a low speed, and the solenoid 235 is energized.
The plate cylinder 212 swings as in normal printing.

Then, when the plate cylinder 212 is pressed against the plate cylinder 213, the ink whose viscosity has been reduced by standing and which has adhered to each of the porous support plates and each of the mesh screens is reduced by the porous support of each of the printed masters 199 and 203. And the ink is removed from the plate cylinders 212 and 213, and each porous support plate and each mesh screen are filled with new ink.

Each of the plate cylinders 212 and 213 is provided with control means 237.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the pressing operation is completed, the plate cylinder driving means 21
4, the plate cylinders 212 and 213 are driven to rotate in opposite directions, and the moving means (not shown) is operated to move the lower plate discharging rollers 197 and 201 and the plate cylinders 21 and 213 are moved.
2, 213 from the outer peripheral surface of each printed master 199, 20
3 is peeled off. Thereafter, the plate cylinders 212 and 213 rotate to the home position and stop, and the plate discharging operation is completed.

After the plate discharging operation is completed, each of the plate cylinders 212 and 213 and the cam 229 start rotating at a low speed, and power is supplied to the solenoid 235, so that the plate cylinder 212 swings. When the plate cylinder 212 is pressed against the plate cylinder 213, the ink density unevenness corresponding to the perforated portions of the printed masters 199 and 203 remaining on the surface of each mesh screen (not shown) on each of the plate cylinders 212 and 213. Leveled, each plate cylinder 2
The ink density on 12, 213 becomes substantially uniform.

Each of the plate cylinders 212 and 213 is provided with control means 237.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

After the completion of the second pressing operation, the platen roller 193 and the master transport roller pair 195 start rotating, and the master 190 is pulled out from the master roll 191. The drawn-out master 190 passes through the thermal head 192, but at this time, the heating elements of the thermal head 192 do not generate heat, and the master 190 does not perform a plate making operation on the thermoplastic resin film.

The control means 237 determines that the leading end of the unprinted master 190 has reached a predetermined position between the stage unit (not shown) and the clamper 216 from the number of steps of a stepping motor (not shown) that drives the platen roller 193 to rotate. When it is determined, an operation signal is sent to the opening / closing means (not shown), and the clamper 216 rotates, and the master 1
90 are pinched.

Thereafter, the plate cylinder 212 rotates clockwise in FIG. 24 at the same peripheral speed as the transfer speed of the master 190, and the operation of winding the master 190 around the plate cylinder 212 is performed. When the control unit 237 determines that the conveyance of one plate is completed from the number of steps of a stepping motor (not shown), the rotation of the platen roller 193 and the master conveyance roller pair 195 is stopped, and the cutting unit 194 is operated. Master 190 is disconnected. Disconnected master 1
90 is pulled out by the rotation of the plate cylinder 212,
When 2 reaches the home position again, the control means 237
In response to a command from the printer, the plate cylinder driving means 214 stops, the plate cylinder 212 is positioned, and the plate feeding operation of the unprinted master 190 to the plate cylinder 212 is completed.

After the completion of the second pressing operation, the platen roller 245 and the master transport roller pair 247 also start rotating, and the master 242 is pulled out from the master roll 243. The extracted master 242 is the master 190
Similarly to the above, the plate passes through the thermal head 244 without being made.

When the control means 237 determines that the leading end of the unmade master 242 has reached a predetermined position from the number of steps of a stepping motor (not shown) for rotating the platen roller 245, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 223 rotates, and the leading end of the master 242 is clamped.

Thereafter, the plate cylinder 213 rotates counterclockwise in FIG. 24 at the same peripheral speed as the transport speed of the master 242,
The operation of winding the master 242 around the plate cylinder 213 is performed. When the control unit 237 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 245 and the master conveyance roller pair 247 stops, and the cutting unit 246 operates. Master 242 is disconnected. Disconnected Master 2
42 is pulled out by the rotation of the plate cylinder 213,
When 3 reaches the home position again, the control means 23
7, the plate cylinder driving means 214 stops, the plate cylinder 213 is positioned, and the plate feeding operation of the unprinted master 242 to the plate cylinder 213 is completed.

When the plate cylinder 213 is positioned, each plate cylinder 2
12, 213 and the cam 229 start rotating at a low speed, respectively, and power is supplied to the solenoid 235, so that the plate cylinder 212 swings in the same manner as during normal printing. And plate cylinder 2
When the plate 12 is pressed against the plate cylinder 213, the ink which has adhered to each of the porous support plates and each of the mesh screens and whose viscosity has been reduced by standing is absorbed by the porous supports of the unprinted masters 190 and 242, and At the same time, the porous support plate and each mesh screen are filled with new ink.

Further, due to this pressing, each printed master 199, 203 remaining on the surface of each mesh screen.
The ink density unevenness corresponding to the perforated portion is further alleviated by the ink being absorbed by the porous supports of the unprinted masters 190, 242, and the ink density on each plate cylinder 212, 213 is further increased. Be uniformed.

Each of the plate cylinders 212 and 213 is provided with control means 237.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the third pressing operation is completed, the plate cylinder driving means 214 is operated to rotate the plate cylinders 212 and 213 in directions opposite to each other, and the moving means (not shown) is operated to operate each lower plate discharging roller. 197, 201 are moved, and unprinted masters 190,
242 is peeled off. After that, the plate cylinders 212 and 213 rotate to the home position and stop, and the second plate discharging operation is completed.

After the second plate discharging operation is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected print mode, and the timer 165 starts operating again after the printing operation is completed. I do. A series of operations in the ninth embodiment is similar to the series of operations in the second embodiment.

Next, a tenth embodiment of the present invention will be described. The tenth embodiment is different from the eighth embodiment only in that a control means 238 is used instead of the control means 236. A control unit 238, which is a known microcomputer having a CPU, a ROM, a RAM, and the like, is provided in the control unit 182 of the stencil printing apparatus 174 instead of the control unit 236, and the image reading unit 17
5. Receiving each signal from the operation panel 153, based on the operation program of the stencil printing device 174 different from the control means 236 and 237 stored in the ROM, the sheet feeding unit 176 and the first plate making unit 177 , The second plate making section 241, the first
It controls the plate discharging unit 178, the second plate discharging unit 179, the sheet discharging unit 180, and the printing unit 181.

Hereinafter, the operation of the stencil printing apparatus 174 according to the tenth embodiment will be described. When one or two originals are set on an original receiving tray (not shown) after the operator sets the master making start key 154, the operation of the timer 165 is stopped, and a time signal is output to the control means 238. The control means 238 converts the input time signal into R
Control means 236 and 23 are compared with the threshold value stored in the OM.
As in step 7, the operation program for normal printing or the operation program for printing after standing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the eighth embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 154 is pressed, the plate cylinders 212 and 213 and the cam 229 start rotating at a low speed, and the solenoid 235 is energized.
The plate cylinder 212 swings as in normal printing.

Then, when the plate cylinder 212 is pressed against the plate cylinder 213, the ink which has adhered to each porous support plate and each mesh screen and whose viscosity has been reduced by standing is reduced to the porous support of each of the printed masters 199 and 203. While being absorbed and removed from the plate cylinders 212 and 213, each porous support plate and each mesh screen are filled with new ink.

Each of the plate cylinders 212 and 213 is provided with control means 238.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the pressing operation is completed, the plate cylinder driving means 21
24, the plate cylinder 213 is driven to rotate clockwise in FIG. 24, and a moving means (not shown) is operated to move the lower plate discharging roller 201, and the printed master 203 is moved from the outer peripheral surface of the plate cylinder 213. Peeled off. During this time, the plate cylinder 212 is positioned at the home position. Thereafter, the plate cylinder 213 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 213 is completed.

After completion of the plate discharging operation of the plate cylinder 213, each plate cylinder 21
2, 213 and the cam 229 start rotating at a low speed, respectively, and the energization of the solenoid 235 is performed again, so that the plate cylinder 212 starts swinging again. When the plate cylinder 212 is pressed against the plate cylinder 213, the porous support plate of the plate cylinder 212,
Each attached to the mesh screen of the plate cylinder 212,
Printed master 1 with ink whose viscosity has been reduced by standing
The ink whose viscosity has been reduced by standing is absorbed by the porous support of No. 99 and adhered to the porous support plate of the plate cylinder 213 and the mesh screen of the plate cylinder 213, respectively. The ink adheres and is removed from the plate cylinders 212 and 213, and each porous support plate and each mesh screen are filled with new ink. Further, unevenness in the density of the ink corresponding to the perforated portion of the printed master 203 remaining on the surface of the mesh screen of the plate cylinder 213 is leveled.

The plate cylinders 212 and 213 are provided with control means 238.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

When the second pressing operation is completed, the plate cylinder driving means 214 is operated to rotate the plate cylinder 212 in the counterclockwise direction in FIG. 24, and the moving means (not shown) is operated to operate the lower plate discharging roller. 197 moves and the plate cylinder 21
The printed master 199 is peeled off from the outer peripheral surface of No. 2. During this time, the plate cylinder 213 is positioned at the home position. Thereafter, the plate cylinder 212 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 212 is completed.

[0338] After the plate discharging operation of the plate cylinder 212 is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected printing mode, and the timer 165 is operated again after the printing operation is completed. Start. A series of operations in the tenth embodiment is similar to the series of operations in the third embodiment. In the tenth embodiment, an example in which the plate discharging operation of the plate cylinder 213 is performed first and the second pressure contact operation is performed in a state where the printed master 203 is peeled off has been described. The second pressing operation may be performed in a state where the printed master 199 is peeled off first.

Next, an eleventh embodiment of the present invention will be described. The eleventh embodiment differs from the eighth embodiment only in that a control means 239 is used instead of the control means 236. The control unit 239, which is a known microcomputer having a CPU, a ROM, a RAM, and the like, is provided in the control unit 182 of the stencil printing apparatus 174 instead of the control unit 236.
5, receiving each signal from the operation panel 153, based on the operation program of the stencil printing device 174 different from the control means 236, 237, 238 stored in the ROM, based on the operation program of the stencil printing device 174, Section 177, second plate making section 24
1. First plate discharging section 178, second plate discharging section 179, sheet discharging section 18
0, the control of the printing unit 181 is performed.

The operation of the stencil printing apparatus 174 according to the eleventh embodiment will be described below. When one or two documents are set on a document tray (not shown) by an operator and the plate making start key 154 is pressed, the operation of the timer 165 stops and a time signal is output to the control means 239. The control means 239 outputs the input time signal to R
Control means 236 and 23 are compared with the threshold value stored in the OM.
The operation program at the time of normal printing or the operation program at the time of leaving printing is called from the ROM in the same manner as 7,238. Here, since the operation at the time of normal printing is the same as that of the eighth embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 154 is pressed, the plate cylinders 212 and 213 and the cam 229 start rotating at a low speed, and the solenoid 235 is energized.
The plate cylinder 212 swings as in normal printing.

Then, when the plate cylinder 212 is pressed against the plate cylinder 213, the ink which has adhered to each porous support plate and each mesh screen and whose viscosity has been reduced by standing is reduced to the porous support of each printed master 199, 203. While being absorbed and removed from the plate cylinders 212 and 213, each porous support plate and each mesh screen are filled with new ink.

Each of the plate cylinders 212 and 213 is provided with control means 239.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the pressing operation is completed, the plate cylinder driving means 21
24, the plate cylinder 213 is driven to rotate clockwise in FIG. 24, and a moving means (not shown) is operated to move the lower plate discharging roller 201, and the printed master 203 is moved from the outer peripheral surface of the plate cylinder 213. Peeled off. During this time, the plate cylinder 212 is positioned at the home position. Thereafter, the plate cylinder 213 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 213 is completed.

After the plate cylinder 213 completes the plate discharging operation, each plate cylinder 21
2, 213 and the cam 229 start rotating at a low speed, respectively, and the energization of the solenoid 235 is performed again, so that the plate cylinder 212 starts swinging again. When the plate cylinder 212 is pressed against the plate cylinder 213, the porous support plate of the plate cylinder 212,
Each attached to the mesh screen of the plate cylinder 212,
Printed master 1 with ink whose viscosity has been reduced by standing
The ink whose viscosity has been reduced by standing is absorbed by the porous support of No. 99 and adhered to the porous support plate of the plate cylinder 213 and the mesh screen of the plate cylinder 213, respectively. The ink adheres and is removed from the plate cylinders 212 and 213, and each porous support plate and each mesh screen are filled with new ink. Further, unevenness in the density of the ink corresponding to the perforated portion of the printed master 203 remaining on the surface of the mesh screen of the plate cylinder 213 is leveled.

The plate cylinders 212 and 213 are provided with control means 239.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

When the second pressing operation is completed, the plate cylinder driving means 214 operates to rotate the plate cylinder 212 counterclockwise in FIG. 24, and the moving means (not shown) operates to operate the lower plate discharging roller. 197 moves and the plate cylinder 21
The printed master 199 is peeled off from the outer peripheral surface of No. 2. During this time, the plate cylinder 213 is positioned at the home position. Thereafter, the plate cylinder 212 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 212 is completed.

After the plate discharging operation of the plate cylinder 212 is completed, the platen roller 193 and the master transport roller pair 195 start rotating, and the master roll 191 moves from the master roll 191 to the master 1.
90 is withdrawn. The drawn-out master 190 passes through the thermal head 192, but at this time, the heating elements of the thermal head 192 do not generate heat, and the master 190 does not perform a plate making operation on the thermoplastic resin film.

The control means 239 determines that the leading end of the unprinted master 190 has reached a predetermined position between the stage (not shown) and the clamper 216 from the number of steps of a stepping motor (not shown) for rotating the platen roller 193. When it is determined, an operation signal is sent to the opening / closing means (not shown), and the clamper 216 rotates, and the master 1
90 are pinched.

Thereafter, the plate cylinder 212 rotates clockwise in FIG. 24 at the same peripheral speed as the transfer speed of the master 190, and the operation of winding the master 190 around the plate cylinder 212 is performed. When the control unit 239 determines that the conveyance of one plate has been completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 193 and the master conveyance roller pair 195 stops, and the cutting unit 194 operates. Master 190 is disconnected. Disconnected master 1
90 is pulled out by the rotation of the plate cylinder 212,
When 2 reaches the home position again, the control means 239
In response to a command from the printer, the plate cylinder driving means 214 stops, the plate cylinder 212 is positioned, and the plate feeding operation of the unprinted master 190 to the plate cylinder 212 is completed.

After the plate cylinder 212 completes the plate discharging operation, the platen roller 245 and the master transport roller pair 247 also start rotating, and the master roll 243 is moved from the master roll 243 to the master 2.
42 is withdrawn. Like the master 190, the drawn-out master 242 is not subjected to plate making, and
Pass 4

Then, when the control means 239 determines that the leading end of the unmade master 242 has reached a predetermined position from the number of steps of a stepping motor (not shown) for rotating the platen roller 245, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 223 rotates, and the leading end of the master 242 is clamped.

Thereafter, the plate cylinder 213 rotates counterclockwise in FIG. 24 at the same peripheral speed as the transport speed of the master 242,
The operation of winding the master 242 around the plate cylinder 213 is performed. When the control unit 239 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 245 and the master conveyance roller pair 247 is stopped, and the cutting unit 246 operates. Master 242 is disconnected. Disconnected Master 2
42 is pulled out by the rotation of the plate cylinder 213,
When 3 reaches the home position again, the control means 23
9, the plate cylinder driving means 214 stops, the plate cylinder 213 is positioned, and the plate feeding operation of the unprinted master 242 to the plate cylinder 213 is completed.

When the plate cylinder 213 is positioned, each plate cylinder 2
12, 213 and the cam 229 start rotating at a low speed, respectively, and power is supplied to the solenoid 235, so that the plate cylinder 212 swings in the same manner as during normal printing. And plate cylinder 2
When the plate 12 is pressed against the plate cylinder 213, the ink which has adhered to each of the porous support plates and each of the mesh screens and whose viscosity has been reduced by standing is absorbed by the porous supports of the unprinted masters 190 and 242, and At the same time, the porous support plate and each mesh screen are filled with new ink.

Further, by this pressing, each printed master 199, 203 remaining on the surface of each mesh screen.
The ink density unevenness corresponding to the perforated portion is reduced by the ink being absorbed by the porous supports of the unprinted masters 190 and 242, and the ink density on each plate cylinder 212 and 213 is made uniform. .

The plate cylinders 212 and 213 are provided with control means 239.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the third pressing operation is completed, the plate cylinder driving means 214 operates to rotate the plate cylinders 212 and 213 in opposite directions, and the moving means (not shown) operates to operate the lower plate discharging rollers. 197, 201 are moved, and unprinted masters 190,
242 is peeled off. After that, the plate cylinders 212 and 213 rotate to the home position and stop, and the second plate discharging operation is completed.

After the second plate discharging operation is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected print mode, and after the printing operation is completed, the timer 165 starts operating again. I do. A series of operations in the eleventh embodiment is similar to the series of operations in the fourth embodiment. In the eleventh embodiment, as in the tenth embodiment, an example is shown in which the plate discharging operation of the plate cylinder 213 is performed first, and the second pressing operation is performed with the printed master 203 peeled off. However, the second press-contact operation may be performed in a state where the plate discharging operation of the plate cylinder 212 is performed first and the printed master 199 is separated.

Next, a twelfth embodiment of the present invention will be described. The twelfth embodiment differs from the eighth embodiment only in that a control means 248 is used instead of the control means 236. A control unit 248, which is a known microcomputer having a CPU, a ROM, a RAM, and the like, is provided in the control unit 182 of the stencil printing apparatus 174 instead of the control unit 236.
5. Control means 236, 237, 238, and 2 which receive each signal from the operation panel 153 and are stored in the ROM.
39, based on an operation program of the stencil printing device 174 different from that of the stencil printing machine 174, a first plate making section 177, a second plate making section 241, a first plate discharging section 178, a second plate discharging section 179, a sheet discharging section 180, The control of the printing unit 181 is performed.

The operation of the stencil printing apparatus 174 according to the twelfth embodiment will be described below. When one or two documents are set on a document receiving table (not shown) by the operator and the plate making start key 154 is pressed, the operation of the timer 165 stops, and a time signal is output to the control means 248. The control means 248 converts the input time signal into R
Control means 236 and 23 are compared with the threshold value stored in the OM.
As in 7, 238, and 239, the operation program at the time of normal printing or the operation program at the time of leaving printing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the eighth embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 154 is pressed, the plate cylinders 212, 213 and the cam 229 start rotating at a low speed, and the solenoid 235 is energized.
The plate cylinder 212 swings as in normal printing.

Then, when the plate cylinder 212 is pressed against the plate cylinder 213, the ink which has adhered to each porous support plate and each mesh screen and whose viscosity has been reduced by standing is reduced to the porous support of each printed master 199, 203. While being absorbed and removed from the plate cylinders 212 and 213, each porous support plate and each mesh screen are filled with new ink.

The plate cylinders 212 and 213 are provided with control means 248.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held.

When the pressing operation is completed, the plate cylinder driving means 21
24, the plate cylinder 213 is driven to rotate clockwise in FIG. 24, and a moving means (not shown) is operated to move the lower plate discharging roller 201, and the printed master 203 is moved from the outer peripheral surface of the plate cylinder 213. Peeled off. During this time, the plate cylinder 212 is positioned at the home position. Thereafter, the plate cylinder 213 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 213 is completed.

After the plate cylinder 213 completes the plate discharging operation, each plate cylinder 21
2, 213 and the cam 229 start rotating at a low speed, respectively, and the energization of the solenoid 235 is performed again, so that the plate cylinder 212 starts swinging again. When the plate cylinder 212 is pressed against the plate cylinder 213, the porous support plate of the plate cylinder 212,
Each attached to the mesh screen of the plate cylinder 212,
Printed master 1 with ink whose viscosity has been reduced by standing
The ink whose viscosity has been reduced by standing is absorbed by the porous support of No. 99 and adhered to the porous support plate of the plate cylinder 213 and the mesh screen of the plate cylinder 213, respectively. The ink adheres and is removed from the plate cylinders 212 and 213, and each porous support plate and each mesh screen are filled with new ink. Further, unevenness in the density of the ink corresponding to the perforated portion of the printed master 203 remaining on the surface of the mesh screen of the plate cylinder 213 is leveled.

Each of the plate cylinders 212 and 213 is provided with control means 248.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

When the second pressing operation is completed, the plate cylinder driving means 214 operates to rotate the plate cylinder 212 counterclockwise in FIG. 24, and the moving means (not shown) operates to operate the lower plate discharging roller. 197 moves and the plate cylinder 21
The printed master 199 is peeled off from the outer peripheral surface of No. 2. During this time, the plate cylinder 213 is positioned at the home position. Thereafter, the plate cylinder 212 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 212 is completed.

After the plate discharging operation of the plate cylinder 212 is completed, the platen roller 193 and the master transport roller pair 195 start rotating, and the master roll 191 moves to the master 1.
90 is withdrawn. The drawn-out master 190 passes through the thermal head 192, but at this time, the heating elements of the thermal head 192 do not generate heat, and the master 190 does not perform a plate making operation on the thermoplastic resin film.

The control means 248 determines that the leading end of the unprinted master 190 has reached a predetermined position between the stage unit (not shown) and the clamper 216 from the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 193. When it is determined, an operation signal is sent to the opening / closing means (not shown), and the clamper 216 rotates, and the master 1
90 are pinched.

Thereafter, the plate cylinder 212 rotates clockwise in FIG. 24 at the same peripheral speed as the transfer speed of the master 190, and the operation of winding the master 190 around the plate cylinder 212 is performed. When the control unit 248 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 193 and the master conveyance roller pair 195 is stopped, and the cutting unit 194 is operated. Master 190 is disconnected. Disconnected master 1
90 is pulled out by the rotation of the plate cylinder 212,
When 2 reaches the home position again, the control means 248
In response to a command from the printer, the plate cylinder driving means 214 stops, the plate cylinder 212 is positioned, and the plate feeding operation of the unprinted master 190 to the plate cylinder 212 is completed.

After the plate discharging operation of the plate cylinder 212 is completed, the platen roller 245 and the master transport roller pair 247 also start rotating, and the master roll 243 and the master 2 move.
42 is withdrawn. Like the master 190, the drawn-out master 242 is not subjected to plate making, and
Pass 4

When the control means 248 determines that the leading end of the unmade master 242 has reached a predetermined position based on the number of steps of a stepping motor (not shown) for rotating the platen roller 245, an operation signal is sent to the opening / closing means (not shown). Then, the clamper 223 rotates, and the leading end of the master 242 is clamped.

Thereafter, the plate cylinder 213 rotates counterclockwise in FIG. 24 at the same peripheral speed as the transport speed of the master 242,
The operation of winding the master 242 around the plate cylinder 213 is performed. When the control unit 248 determines that the conveyance of one plate is completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 245 and the master conveyance roller pair 247 stops, and the cutting unit 246 operates. Master 242 is disconnected. Disconnected Master 2
42 is pulled out by the rotation of the plate cylinder 213,
When 3 reaches the home position again, the control means 24
8, the plate cylinder driving means 214 stops, the plate cylinder 213 is positioned, and the plate feeding operation of the unprinted master 242 to the plate cylinder 213 is completed.

When the plate cylinder 213 is positioned, each plate cylinder 2
12, 213 and the cam 229 start rotating at a low speed, respectively, and power is supplied to the solenoid 235, so that the plate cylinder 212 swings in the same manner as during normal printing. And plate cylinder 2
When the plate 12 is pressed against the plate cylinder 213, the ink which has adhered to each of the porous support plates and each of the mesh screens and whose viscosity has been reduced by standing is absorbed by the porous supports of the unprinted masters 190 and 242, and At the same time, the porous support plate and each mesh screen are filled with new ink.

Further, due to this pressing, each printed master 199, 203 remaining on the surface of each mesh screen.
The ink density unevenness corresponding to the perforated portion is reduced by the ink being absorbed by the porous supports of the unprinted masters 190 and 242, and the ink density on each plate cylinder 212 and 213 is made uniform. .

The plate cylinders 212 and 213 are provided with control means 248.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

When the third pressing operation is completed, the plate cylinder driving means 214 operates to rotate the plate cylinder 212 counterclockwise in FIG. 24, and the moving means (not shown) operates to operate the lower plate discharging roller. 197 moves and the plate cylinder 21
The unprinted master 190 wound around the outer peripheral surface of No. 2 is peeled off. During this time, the plate cylinder 213 is positioned at the home position. Thereafter, the plate cylinder 212 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 212 is completed.

After the plate cylinder 212 completes the plate discharging operation, each plate cylinder 21
2, 213 and the cam 229 start rotating at a low speed, respectively, and the energization of the solenoid 235 is performed again, so that the plate cylinder 212 starts swinging again. Then, when the plate cylinder 212 is pressed against the plate cylinder 213, the porous support plate of the plate cylinder 213,
Each attached to the mesh screen of the plate cylinder 213,
Ink master whose viscosity has been reduced by leaving it unprepared
The ink whose viscosity has been reduced by standing is absorbed by the porous support of No. 42 and adhered to the porous support plate of the plate cylinder 212 and the mesh screen of the plate cylinder 212, respectively. , And are removed from the plate cylinders 212 and 213, and each porous support plate and each mesh screen are filled with new ink. In addition, unevenness in the density of ink remaining on the surface of the mesh screen of the plate cylinder 212 and corresponding to the perforated portion of the printed master 199 is leveled.

The plate cylinders 212 and 213 are provided with control means 248.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

When the fourth pressing operation is completed, the plate cylinder driving means 214 operates to rotate the plate cylinder 213 clockwise in FIG. 24, and the moving means (not shown) operates to operate the lower plate discharging roller 201. Moves to the plate cylinder 213
The unprinted master 242 wound around the outer peripheral surface of is peeled off. During this time, the plate cylinder 212 is positioned at the home position. Thereafter, the plate cylinder 213 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 213 is completed.

After the second plate discharging operation in each of the plate cylinders 212 and 213 is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected print mode. The timer 165 starts operating again. A series of operations in the twelfth embodiment includes:
This is the same as a series of operations in the fifth embodiment. In addition,
In the twelfth embodiment, a second press-contact operation is performed in a state where the plate cylinder 213 is first subjected to the plate discharging operation and the printed master 203 is separated, and thereafter, the plate discharging operation of the plate cylinder 212 is performed first. An example in which the fourth press-contact operation is performed in a state where the master 190 for plate making is peeled off is shown. However, a second press-contact operation is performed in a state where the plate discharging operation of the plate cylinder 212 is performed first and the printed master 199 is separated. Thereafter, a fourth press-contacting operation may be performed in a state where the plate discharging operation of the plate cylinder 213 is performed first and the unmade master 242 is peeled off.

Next, a thirteenth embodiment of the present invention will be described. The thirteenth embodiment is different from the eighth embodiment only in that a control means 253 is used instead of the control means 236. The control unit 253, which is a known microcomputer having a CPU, a ROM, a RAM, and the like, is provided in the control unit 182 of the stencil printing apparatus 174 instead of the control unit 236.
5. Control means 236, 237, 238, and 2 which receive each signal from the operation panel 153 and are stored in the ROM.
39, 248, based on an operation program of the stencil printing apparatus 174 different from that of the stencil printing apparatus 174.
7, the second plate making section 241, the first plate discharging section 178, the second plate discharging section 179, the sheet discharging section 180, and the printing section 181 are controlled.

Hereinafter, the operation of the stencil printing apparatus 174 according to the thirteenth embodiment will be described. When one or two documents are set on a document receiving table (not shown) by the operator and the plate making start key 154 is pressed, the operation of the timer 165 stops and a time signal is output to the control means 253. The control means 253 converts the input time signal into R
Control means 236 and 23 are compared with the threshold value stored in the OM.
As in 7, 238, 239, and 248, the operation program at the time of normal printing or the operation program at the time of leaving printing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the eighth embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 154 is pressed, the plate cylinder driving means 214 is operated to rotate the plate cylinder 213 clockwise in FIG. 24, and the moving means (not shown) is operated to operate the lower plate discharging roller 201. Is moved, and the printed master 203 is peeled from the outer peripheral surface of the plate cylinder 213. During this time, the plate cylinder 212 is positioned at the home position. Thereafter, the plate cylinder 213 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 213 is completed.

After the plate cylinder 213 has completed the plate discharging operation, each plate cylinder 21
2, 213 and the cam 229 start rotating at a low speed, and the solenoid 235 is energized.
12 starts rocking. Then, the plate cylinder 212 is moved to the plate cylinder 21.
3, the porous support plate of the plate cylinder 212, the plate cylinder 21
The ink which has adhered to the mesh screen of No. 2 and whose viscosity has been reduced by standing is absorbed by the porous support of the printed master 199, and adheres to the porous support plate of the plate cylinder 213 and the mesh screen of the plate cylinder 213, respectively. The ink, whose viscosity has been reduced by leaving it unattached, adheres to the thermoplastic resin film of the printed master 199, and
2, 213, and each porous support plate and each mesh screen are filled with fresh ink. In addition, it remained on the surface of the mesh screen of the plate cylinder 213,
The density unevenness of the ink corresponding to the perforated portion of the printed master 203 is leveled.

The plate cylinders 212 and 213 are provided with control means 253.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

After the pressing operation is completed, the plate cylinder driving means 214 is operated to rotate the plate cylinder 212 counterclockwise in FIG. 24, and the moving means (not shown) is operated to move the lower plate discharging roller 197. Then, the printed master 199 is peeled off from the outer peripheral surface of the plate cylinder 212. During this time, the plate cylinder 21
Reference numeral 3 is positioned at the home position. afterwards,
The plate cylinder 212 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 212 is completed.

After the plate discharging operation of the plate cylinder 212 is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected printing mode, and the timer 165 is operated again after the printing operation is completed. Start. A series of operations in the thirteenth embodiment is similar to the series of operations in the sixth embodiment. In the thirteenth embodiment, the example in which the plate discharging operation of the plate cylinder 213 is performed first and the press-contact operation is performed in a state where the printed master 203 is peeled off has been described.
The plate discharging operation of the plate cylinder 212 is performed first, and the printed master 19 is
The pressing operation may be performed in a state where 9 is peeled off.

Next, a fourteenth embodiment of the present invention will be described. The fourteenth embodiment differs from the eighth embodiment only in that a control means 254 is used instead of the control means 236. The control unit 254, which is a known microcomputer having a CPU, a ROM, a RAM, and the like, is provided in the control unit 182 of the stencil printing apparatus 174 instead of the control unit 236.
5. Control means 236, 237, 238, and 2 which receive each signal from the operation panel 153 and are stored in the ROM.
39, 248, based on an operation program of the stencil printing apparatus 174 different from that of the stencil printing apparatus 174.
7, the second plate making section 241, the first plate discharging section 178, the second plate discharging section 179, the sheet discharging section 180, and the printing section 181 are controlled.

Hereinafter, the operation of the stencil printing apparatus 174 according to the fourteenth embodiment will be described. When one or two documents are set on a document receiving table (not shown) by the operator and the plate making start key 154 is pressed, the operation of the timer 165 stops, and a time signal is output to the control means 254. The control means 254 converts the input time signal into R
Control means 236 and 23 are compared with the threshold value stored in the OM.
As in 7, 238, 239, and 248, the operation program at the time of normal printing or the operation program at the time of leaving printing is called from the ROM. Here, since the operation at the time of normal printing is the same as that of the eighth embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 154 is depressed, the plate cylinder driving means 214 is operated to rotate the plate cylinders 212 and 213 in directions opposite to each other, and the moving means (not shown) is operated to operate each lower plate discharging roller. 197 and 201 are moved, and the printed masters 199 and 203 wound around the outer peripheral surfaces of the plate cylinders 212 and 213 are peeled off. Thereafter, the plate cylinders 212 and 213 rotate to the home position and stop, and the plate discharging operation is completed.

After the plate discharging operation is completed, the platen roller 193
And the master transport roller pair 195 start rotating, and the master 190 is pulled out from the master roll 191. The pulled out master 190 is a thermal head 192.
However, at this time, the heating element of the thermal head 192 does not generate heat, and the master 190 does not perform the plate making operation on the thermoplastic resin film.

Then, based on the number of steps of a stepping motor (not shown) that drives the platen roller 193 to rotate, the control means 254 determines that the leading end of the unmade master 190 has reached a predetermined position between the stage (not shown) and the clamper 216. When it is determined, the operation signal is sent to the opening / closing means (not shown), and the clamper 216 rotates, and the master 1
90 are pinched.

Thereafter, the plate cylinder 212 rotates clockwise in FIG. 24 at the same peripheral speed as the transfer speed of the master 190, and the master 190 is wound around the plate cylinder 212. When the control unit 254 determines that the conveyance of one plate has been completed based on the number of steps of a stepping motor (not shown), the rotation of the platen roller 193 and the master conveyance roller pair 195 stops, and the cutting unit 194 operates. Master 190 is disconnected. Disconnected master 1
90 is pulled out by the rotation of the plate cylinder 212,
When 2 reaches the home position again, the control means 254
In response to a command from the printer, the plate cylinder driving means 214 stops, the plate cylinder 212 is positioned, and the plate feeding operation of the unprinted master 190 to the plate cylinder 212 is completed. During this time, the plate cylinder 213 is positioned at the home position.

When the plate cylinder 212 is positioned, each plate cylinder 2
12, 213 and the cam 229 start rotating at a low speed, respectively, and the power is supplied to the solenoid 235, so that the plate cylinder 212 starts swinging. And the plate cylinder 212 is the plate cylinder 2
13, the porous support plate of the plate cylinder 212, the plate cylinder 2
The ink whose viscosity has been reduced by leaving it attached to the mesh screen of No. 12 is absorbed by the porous support of the unprinted master 190, and the porous support plate of the plate cylinder 213 and the mesh screen of the plate cylinder 213 respectively. The ink that has adhered and whose viscosity has been reduced by standing adheres to the thermoplastic resin film of the unprinted master 190, and
12, 213, and each porous support plate and each mesh screen are filled with fresh ink.
Further, unevenness in the density of the ink corresponding to the perforated portion of the printed master 203 remaining on the surface of the mesh screen of the plate cylinder 213 is leveled.

The plate cylinders 212 and 213 are provided with control means 254.
After stopping by the number of times stored in advance in the home position, the motor stops at the home position. When the power to the solenoid 235 is cut off before the plate cylinders 212 and 213 stop, the holding arm 234 returns to the position shown in FIG.
Is held again.

After the pressing operation is completed, the plate cylinder driving means 214 operates to rotate the plate cylinder 212 counterclockwise in FIG. 24, and the moving means (not shown) operates to move the lower plate discharge roller 197. The unprinted master 190 is peeled off from the outer peripheral surface of the plate cylinder 212. During this time, the plate cylinder 21
Reference numeral 3 is positioned at the home position. afterwards,
The plate cylinder 212 rotates to the home position and stops, and the plate discharging operation of the plate cylinder 212 is completed.

After the plate discharging operation of the plate cylinder 212 is completed, the plate making operation, the plate feeding operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the selected printing mode, and the timer 165 is operated again after the printing operation is completed. Start. A series of operations in the fourteenth embodiment is similar to the series of operations in the seventh embodiment. In the fourteenth embodiment, the example in which the press-contact operation is performed in a state in which the unprinted master 190 is wound around the plate cylinder 212 is described, but in a state in which the unmade master 242 is wound around the plate cylinder 213. It may be configured to perform a pressing operation.

In the operation at the time of printing after standing in the eighth to fourteenth embodiments, the plate cylinder driving means 214 is operated when the plate cylinders 212 and 213 are pressed against each other, and the plate cylinders 212 and 213 are operated.
Have been described, the respective plate cylinders 212,
The same effect can be obtained even if only one of the 213 is driven to rotate.

Each of the printed masters 199 and 203 used in the eighth to fourteenth embodiments includes the one used when double-sided printing was performed in the previous printing (both plates were made). Those used when one-sided printing was performed in the previous printing (one of which is plate-making and the other is not made) are included.

In each of the first to fourteenth embodiments, the number of rotations of at least one of the plate cylinders at the time of press-contacting each plate cylinder during printing after standing is set to the number stored in advance in the ROM of each control means. As a modified example of each embodiment, a configuration in which the number of rotations is changed according to the length of the time signal from the timer 165 may be adopted. In this case, an appropriate value of the standing time and the number of rotations is determined by an experiment. Table 1 shows an example of the relationship between the standing time and the number of rotations.

[0402]

[Table 1]

Further, even when the standing time is almost the same, the drying method of the ink or the ink viscosity varies depending on the environmental temperature and / or the environmental humidity. Therefore, as another modified example of each embodiment, in addition to the above-described configuration,
A configuration may be adopted in which a temperature sensor and / or a humidity sensor are provided inside each plate cylinder, and the number of rotations of the plate cylinder at the time of pressure contact, which is changed according to the length of the time signal, is corrected. Also in this case, the correction value is determined by experiment. Table 2 shows an example of a correction value according to the environmental temperature, Table 3 shows an example of a correction value according to the environmental humidity, and a control block diagram of a control unit employing this configuration is used in the first embodiment. FIG. 27 shows each of the control means 166.

[0404]

[Table 2]

[0405]

[Table 3]

By adopting the above-described configuration, the number of rotations at the time of plate cylinder pressure contact can be controlled to an optimum number according to the state of the plate cylinder surface which changes with a change in the standing time or environmental conditions. And a good double-sided printed image can be obtained.

[0407]

According to the first or second aspect of the present invention, when the next printing is performed from the state where the printed master is wound on the first and second master support plates,
When the elapsed time measured by the timing means exceeds an arbitrary predetermined time, at least one of the plate cylinders is rotated a predetermined number of times while the first and second plate cylinders are pressed against each other via the printed master, Thereafter, the printed master is peeled off, a new blank master is wound around each master support plate, and at least one of the blank cylinders is rotated a predetermined number of times while each plate cylinder is pressed against each other via the blank master. By doing so, the ink whose viscosity has been reduced by leaving it attached to each master support plate and the mesh screen provided on each master support plate has been reduced to the porous support of the printed master and the porous support of the unmade master. After being absorbed and removed from each plate cylinder, each plate cylinder is filled with new ink and corresponds to the perforated portion of the printed master remaining on the surface of each mesh screen. Ink density unevenness is equalized by pressing each mesh screen against the porous support of the unmade master, and the ink density on each plate cylinder becomes uniform, so that bleeding or set-off occurs during double-sided printing. In addition, the occurrence of density unevenness immediately after the start of printing can be prevented, the occurrence of waste paper can be suppressed as much as possible, and the printing cost can be reduced.

According to the third aspect of the present invention, when the next printing is performed from the state where the printed master is wound around the outer peripheral surfaces of the first and second plate cylinders, the time measuring means measures the time. When the elapsed time exceeds an arbitrary predetermined time, at least one of the plate cylinders is rotated a predetermined number of times while each plate cylinder is pressed against each other via the printed master, and then the printed master is peeled off. A new blank master is wound around each plate cylinder, and at least one of the plate cylinders is rotated a predetermined number of times while the plate cylinders are pressed against each other via the blank plate master, leaving the plate cylinder attached to each plate cylinder. After the ink whose viscosity has been reduced by the ink is absorbed by the porous support of the printed master and the porous support of the unprinted master and removed from each plate cylinder, each plate cylinder is filled with new ink. On the surface of the torso Ink density unevenness corresponding to the perforated portion of the printed master is equalized by pressing each plate cylinder against the porous support of the unmade master, and the ink density on each plate cylinder becomes uniform. , The occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing can be prevented to minimize the occurrence of waste paper,
The printing cost can be reduced.

According to the invention as set forth in claim 4 or claim 5, when the next printing is performed from the state where the printed masters are wound on the first and second master support plates, the timing means is used. When the counted elapsed time exceeds an arbitrary predetermined time, while the first and second plate cylinders are pressed against each other via the printed master, at least one of the plate cylinders is rotated a predetermined number of times. With the plate cylinders pressed against each other while the printed master is peeled off, at least one of the plate cylinders is rotated a predetermined number of times, and then a new blank master is wound around each master support plate and each plate cylinder is wound. By rotating at least one of the plate cylinders a predetermined number of times while being pressed against each other via the unplated master, the discharge sticking to each master support plate and the mesh screen provided on each master support plate, respectively. After the ink whose viscosity has been reduced by the ink is absorbed by the porous support of the printed master and the porous support of the unprinted master and removed from each plate cylinder, each plate cylinder is filled with new ink, and further, each mesh is filled. The density unevenness of the ink corresponding to the perforated portion of the printed master remaining on the surface of the screen is further alleviated by the press-contact between the respective mesh screens and the press-contact between the respective mesh screens and the porous support of each unprinted master. Since the ink density on each plate cylinder becomes more uniform, it is possible to effectively prevent the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing, and to minimize the occurrence of waste paper. As a result, printing cost can be reduced.

According to the sixth aspect of the present invention, when the next printing is performed from the state where the printed master is wound around the outer peripheral surfaces of the first and second plate cylinders, the timing means measures the time. When the elapsed time exceeds an arbitrary predetermined time, at least one of the plate cylinders is rotated a predetermined number of times while each plate cylinder is pressed against each other via the printed master, and then the printed master is peeled off. With each plate cylinder pressed against each other, at least one plate cylinder is rotated a predetermined number of times,
Thereafter, by winding a new blank master on each plate cylinder and pressing each plate cylinder against each other via the blank master, by rotating at least one of the plate cylinders a predetermined number of times,
After the ink whose viscosity has decreased due to standing on each plate cylinder is absorbed by the porous support of the printed master and the porous support of the unprinted master and removed from each plate cylinder, new ink is applied to each plate cylinder. The density unevenness of the ink corresponding to the perforated portion of the printed master remaining on the surface of each plate cylinder after being filled is caused by the pressure contact between the plate cylinders and the contact between each plate cylinder and the porous support of each unprinted master. The ink pressure is further alleviated by the pressure contact, and the ink density on each plate cylinder becomes even more uniform. Can be suppressed as much as possible, and the printing cost can be reduced.

According to the seventh or eighth aspect of the present invention, when the next printing is performed from the state where the printed masters are wound on the first and second master support plates, the timing means is used. When the measured elapsed time exceeds an arbitrary predetermined time, at least one of the plate cylinders is rotated a predetermined number of times while the first and second plate cylinders are pressed against each other via the printed master, and thereafter, By peeling the printed master from either one of the master support plates and rotating each of the plate cylinders a predetermined number of times while keeping each plate cylinder pressed against each other via the printed master, each master support plate or The ink whose viscosity has been reduced by leaving it attached to the mesh screen provided on each master support plate,
After being absorbed by the porous support of the printed master and adhered to the thermoplastic resin film of the printed master remaining without being peeled off on one of the other master support plates and being removed from each plate cylinder, The plate cylinder is filled with new ink, and the density unevenness of the ink corresponding to the perforated portions of the peeled-off printed master remains on the surface of the mesh screen provided on one master support plate. Since it is leveled by pressing against the thermoplastic resin film of the printed master, it is possible to prevent the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after starting printing, and to minimize the occurrence of waste paper. As a result, printing cost can be reduced.

According to the ninth aspect of the present invention, when the next printing is performed from the state where the printed masters are wound on the outer peripheral surfaces of the first and second plate cylinders, the timing means measures the time. When the elapsed time exceeds an arbitrary predetermined time, at least one of the plate cylinders is rotated a predetermined number of times while keeping the plate cylinders pressed against each other via the printed master, and thereafter, from one of the plate cylinders. By peeling the printed master and rotating each of the plate cylinders a predetermined number of times while keeping each plate cylinder pressed against each other via the printed master,
The thermoplastic resin film of the printed master that has been absorbed by the porous support of the printed master and has been left without being peeled off on one of the other plate cylinders, while the ink whose viscosity has been reduced by standing on each plate cylinder is absorbed. After being removed from each plate cylinder by adhering to the plate cylinder, each plate cylinder is filled with new ink, and further, the density of the ink remaining on the surface of one of the plate cylinders and corresponding to the perforated portion of the peeled printed master. Since unevenness is leveled by pressing the plate cylinder against the thermoplastic resin film of the printed master, the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing is prevented, and Generation can be minimized, and printing costs can be reduced.

According to the tenth or eleventh aspect of the present invention, when the next printing is performed from the state where the printed masters are wound on the first and second master support plates, the timing means is used. When the counted elapsed time exceeds an arbitrary predetermined time, each master is rotated after rotating at least one of the plate cylinders a predetermined number of times while the first and second plate cylinders are pressed against each other via the printed master. After the printed master is peeled off from one of the support plates, and at least one of the plate cylinders is rotated a predetermined number of times while each plate cylinder is pressed against each other via the printed master, any one of the master support plates is removed. The printed master is peeled off from the other side, and thereafter, a new blank master is wound around each master support plate, and each plate cylinder is pressed against each other via the blank master, and at least one of the blank cylinders is repeated a predetermined number of times. By rotating the ink, the ink whose viscosity has been reduced by leaving it attached to each master support plate and the mesh screen provided on each master support plate, the porous support of the printed master and the porous support of the unprinted master After being absorbed by the body and attached to the thermoplastic resin film of the printed master remaining without being peeled off on one of the other master support plates and being removed from each plate cylinder,
Each plate cylinder is filled with new ink, and the density unevenness of the ink corresponding to the perforated portion of the peeled printed master remaining on the surface of the mesh screen provided on one master support plate is reduced. Are leveled by pressing against the thermoplastic resin film of the printed master, and then each mesh screen is pressed against the porous support of the blank master, respectively, so that the ink concentration on each plate cylinder becomes more uniform. Therefore, the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing can be prevented, the occurrence of waste paper can be suppressed, and the printing cost can be reduced.

According to the twelfth aspect of the present invention, when the next printing is performed from the state where the printed master is wound around the outer peripheral surfaces of the first and second plate cylinders, the timing means measures the time. When the elapsed time exceeds an arbitrary predetermined time, printing is performed from any one of the plate cylinders after rotating at least one of the plate cylinders a predetermined number of times while keeping the plate cylinders pressed against each other via the printed master. Peeling the printed master, peeling the printed master from one of the plate cylinders after rotating at least one plate cylinder a predetermined number of times while keeping each plate cylinder pressed against each other via the printed master, Thereafter, a new blank master is wound around each plate cylinder, and each plate cylinder is pressed against each other via the blank master, and at least one of the plate cylinders is rotated a predetermined number of times to adhere to each plate cylinder. Stickiness The ink, which has been reduced, is absorbed by the porous support of the printed master and the porous support of the unprinted master, and the thermoplastic resin film of the printed master remaining without being peeled off on one of the other cylinders. After being removed from each plate cylinder by adhering to the plate cylinder, each plate cylinder is filled with new ink, and the density of ink remaining on the surface of one of the plate cylinders and corresponding to the perforated portion of the peeled printed master. The unevenness is leveled by pressing the plate cylinder against the thermoplastic resin film of the printed master, and thereafter, each plate cylinder is pressed against the porous support of the blank plate master, whereby the ink density on each plate cylinder is reduced. Since it becomes even more uniform, the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing can be prevented, the occurrence of waste paper can be minimized, and the printing cost can be reduced. It can be.

According to the thirteenth or fourteenth aspect of the present invention, when the next printing is performed from the state where the printed masters are wound on the first and second master support plates, the timing means is used. When the counted elapsed time exceeds an arbitrary predetermined time, each master is rotated after rotating at least one of the plate cylinders a predetermined number of times while the first and second plate cylinders are pressed against each other via the printed master. After the printed master is peeled off from one of the support plates, and at least one of the plate cylinders is rotated a predetermined number of times while each plate cylinder is pressed against each other via the printed master, any one of the master support plates is removed. The printed master is peeled off from the other side, a new blank master is wound around each master support plate, and at least one of the blank cylinders is rotated a predetermined number of times while each plate cylinder is pressed against each other via the blank master. Thereafter, the unprinted master is peeled off from one of the other master support plates, and then, while each plate cylinder is pressed against each other via the unprinted master, at least one of the plate cylinders is rotated a predetermined number of times, whereby each The ink whose viscosity has been reduced by leaving it attached to the master support plate or the mesh screen provided on each master support plate is absorbed by the porous support of the printed master and the porous support of the unmade master. Each of the printed masters remaining on the other master support plate without being peeled off and the unprinted master remaining on the one master support plate without being peeled off adhere to the thermoplastic resin film of each plate. After being removed from the cylinder, each plate cylinder was filled with fresh ink, and the peeled marks remaining on the surface of the mesh screen provided on one of the master support plates. The density unevenness of the ink corresponding to the perforated portion of the finished master is leveled by pressing the mesh screen against the thermoplastic resin film of the printed master, and after each mesh screen is pressed against the porous support of the blank master, respectively. The density unevenness of the ink corresponding to the perforated portion of the peeled-off printed master remaining on the surface of the mesh screen provided on the other master support plate, and the mesh screen is pressed against the thermoplastic resin film of the unmade master. This makes the ink density on each plate cylinder even more uniform, thereby preventing the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing, thereby generating waste paper. Can be suppressed, and the printing cost can be reduced.

According to the fifteenth aspect of the present invention, when the next printing is performed from the state where the printed masters are wound on the outer peripheral surfaces of the first and second plate cylinders, the timing means measures the time. When the elapsed time exceeds an arbitrary predetermined time, printing is performed from any one of the plate cylinders after rotating at least one of the plate cylinders a predetermined number of times while keeping the plate cylinders pressed against each other via the printed master. Peeling the printed master, peeling the printed master from one of the plate cylinders after rotating at least one plate cylinder a predetermined number of times while keeping each plate cylinder pressed against each other via the printed master, A new blank master is wound around each plate cylinder, and while each plate cylinder is pressed against each other via the blank master, at least one of the plate cylinders is rotated a predetermined number of times and then any one of the plate cylinders is rotated. Peel off the blank master and Thereafter, by rotating at least one of the plate cylinders a predetermined number of times while keeping the plate cylinders pressed against each other via the unmade master, the ink whose viscosity has decreased due to being left attached to each plate cylinder becomes a printed master. Is absorbed by the porous support of the unprinted master and the porous support of the unprepared master, and is not separated on one of the other printing cylinders and is not separated on the other printing cylinder. After being removed from each plate cylinder by attaching to the thermoplastic resin film of the unprinted master left in each plate cylinder, each plate cylinder is filled with new ink, and further, the peeled print remaining on the surface of one plate cylinder is removed. Uneven density of ink corresponding to the perforated part of the finished master is leveled by pressing the plate cylinder against the thermoplastic resin film of the printed master, and after each plate cylinder is pressed against the porous support of the blank master, respectively. ,other The uneven density of the ink corresponding to the perforated portion of the peeled-off printed master remaining on the surface of the plate cylinder of the plate cylinder is leveled by the press-contact of the plate cylinder with the thermoplastic resin film of the blank plate master. Since the ink density on the cylinder becomes more uniform, the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing can be prevented, and the occurrence of wasted paper can be minimized. Reduction can be achieved.

According to the invention of claim 16 or claim 17, when the next printing is performed from the state where the printed masters are wound on the first and second master support plates, the timing means is used. When the counted elapsed time exceeds an arbitrary predetermined time, the printed master is peeled off from one of the master support plates, and the first and second plate cylinders are kept pressed against each other via the printed master. By rotating at least one of the plate cylinders a predetermined number of times, the ink whose viscosity has been reduced by leaving it attached to each of the master support plates and the mesh screen provided on each of the master support plates is reduced to one of the other master support plates. After being absorbed by the porous support of the printed master remaining without being peeled off on the plate and attached to the thermoplastic resin film of the printed master and removed from each plate cylinder, each The new ink is filled to the body,
Furthermore, the density unevenness of the ink corresponding to the perforated portion of the peeled printed master remaining on the surface of the mesh screen provided on one master support plate, the mesh screen is printed with the thermoplastic resin film of the printed master. Since it is leveled by pressing, it is possible to prevent the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing, to minimize the occurrence of waste paper, and to reduce printing costs. Can be.

According to the eighteenth aspect of the present invention, when the next printing is performed from a state where the printed master is wound around the outer peripheral surfaces of the first and second plate cylinders, the timing means measures the time. When the elapsed time exceeds an arbitrary predetermined time, the printed master is peeled off from one of the plate cylinders, and at least one of the plate cylinders is pressed while the plate cylinders are pressed against each other via the printed master. By rotating the ink a number of times, the ink whose viscosity has been reduced by leaving
After being absorbed by the porous support of the printed master remaining without being peeled off on one of the other plate cylinders and attached to the thermoplastic resin film of the printed master and removed from each plate cylinder, The plate cylinder is filled with new ink, and the ink density unevenness remaining on the surface of one of the plate cylinders corresponding to the perforated portion of the printed master that has been peeled off is the thermoplastic resin film of the master whose print cylinder is printed. , So that the occurrence of bleeding or set-off during double-sided printing and the occurrence of density unevenness immediately after the start of printing can be prevented, the generation of waste paper can be minimized, and the printing cost can be reduced. be able to.

[0419] According to the invention of claim 19 or claim 20, when the next printing is performed from the state where the printed master is wound on the first and second master support plates, the timing means is used. When the counted elapsed time exceeds an arbitrary predetermined time, the printed master is peeled off from each master support plate, and then a new blank master is wound on one of the master support plates. By keeping at least one of the plate cylinders rotated a predetermined number of times while keeping the plate cylinders pressed against each other via the unprepared master, the plate cylinders adhered to each master support plate and the mesh screen provided on each master support plate, respectively. The ink whose viscosity has been reduced by the standing is absorbed by the porous support of the unmade master wound around one of the master support plates, and the thermoplastic resin film of the unmade master is fed. After being removed from each plate cylinder by adhering to the rim, each plate cylinder is filled with new ink, and the separated printed masters remaining on the surface of the mesh screen provided on the other master support plate are removed. Since the density unevenness of the ink corresponding to the perforated portion is equalized by pressing the mesh screen against the thermoplastic resin film of the unmade master, the occurrence of bleeding or set-off during double-sided printing and the density unevenness immediately after the start of printing are reduced. Generation can be prevented and generation of waste paper can be suppressed to the utmost, and printing cost can be reduced.

According to the twenty-first aspect of the present invention, when the next printing is performed from the state where the printed master is wound around the outer peripheral surfaces of the first and second plate cylinders, the time counting means measures the time. When the elapsed time exceeds an arbitrary predetermined time, a new unprinted master is wound around one of the plate cylinders after peeling the printed master from each plate cylinder, and each plate cylinder is passed through the unprinted master. By rotating at least one of the plate cylinders a predetermined number of times while keeping the plates pressed against each other, the unprinted plate wound on one of the plate cylinders, the ink having a reduced viscosity due to being left attached to each plate cylinder, After being absorbed by the porous support of the master and adhered to the thermoplastic resin film of the unprepared master and removed from each plate cylinder, each plate cylinder is filled with new ink, and then the other plate cylinder is filled with new ink. Mesh screen provided The uneven density of the ink corresponding to the perforated portions of the peeled-off printed master remaining on the surface of the master is evened out when the mesh screen is pressed against the thermoplastic resin film of the unprinted master. In this case, the occurrence of bleeding or set-off and the occurrence of density unevenness immediately after the start of printing can be prevented, the generation of waste paper can be suppressed as much as possible, and the printing cost can be reduced.

According to the twenty-second aspect, when the elapsed time exceeds an arbitrary predetermined time, at least one of the plate cylinders is pressed while the outer peripheral surfaces of the first and second plate cylinders are pressed against each other. By rotating by the number of times, after the ink whose viscosity has been lowered by leaving it attached to each plate cylinder is removed from each plate cylinder, each plate cylinder is filled with new ink,
The occurrence of bleeding or set-off during double-sided printing can be prevented, the generation of waste paper can be suppressed as much as possible, and the printing cost can be reduced.

According to the twenty-third aspect of the present invention, the number of rotations of the first and / or second plate cylinders when the first and second plate cylinders are pressed against each other is determined by the length of the elapsed time. The number of rotations at the time of plate cylinder pressure contact can be controlled to an optimal number according to the state of the plate cylinder surface that changes with the change of the standing time, and the rise time during printing after standing , And a good double-sided printed image can be obtained from the first sheet.

According to the twenty-fourth aspect of the present invention, the number of rotations of the first and / or second plate cylinders at the time of pressing the first plate cylinder and the second plate cylinder is determined by the length of the elapsed time and By controlling based on the detected temperature, according to the state of the plate cylinder surface that changes with the leaving time and environmental temperature,
The number of rotations at the time of plate cylinder pressure contact can be controlled to an optimum number, and a good double-sided printed image can be obtained from the first sheet while minimizing the rise time during printing after standing.

According to the twenty-fifth aspect of the present invention, the number of rotations of the first and / or second plate cylinders at the time of pressing the first plate cylinder and the second plate cylinder is determined by the length of the elapsed time and By controlling based on the detected temperature and humidity, the number of rotations at the time of plate cylinder pressure contact can be set to the optimal number according to the state of the plate cylinder surface that changes with the leaving time, environmental temperature, and environmental humidity. Thus, it is possible to obtain a favorable double-sided printed image from the first sheet while minimizing the rise time during printing after standing.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a stencil printing apparatus used in first to seventh embodiments of the present invention.

FIG. 2 is a perspective view showing a plate cylinder of a stencil printing machine used in the first to seventh embodiments of the present invention.

FIG. 3 is a front view of a flange provided at a side end of a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 4 is a side view of a flange provided at a side end of a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 5 is a partial sectional side view showing a main part of a printing unit when printing the stencil printing machine used in the first to seventh embodiments of the present invention.

FIG. 6 is a perspective view showing a plate cylinder of a stencil printing machine used in the first to seventh embodiments of the present invention.

FIG. 7 is a side view showing a main part of a printing unit of the stencil printing apparatus used in the first to seventh embodiments of the present invention when printing is not performed.

FIG. 8 is a perspective view showing a first support member provided inside a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 9 is a perspective view showing a base provided inside a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 10 is a perspective view showing a stopper provided inside a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 11 is a perspective view showing an ink supply pipe provided inside a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 12 is a perspective view showing an ink supply pipe provided inside a plate cylinder used in the first to seventh embodiments of the present invention.

FIG. 13 is a schematic diagram for explaining a plate cylinder driving means of the stencil printing apparatus used in the first to seventh embodiments of the present invention.

FIG. 14 is a diagram showing an operation panel of a stencil printing machine used in the first to fourteenth embodiments of the present invention.

FIG. 15 is a block diagram of control means of the stencil printing apparatus used in the first to seventh embodiments of the present invention.

FIG. 16 is a side view showing a main part of a printing unit during printing of the stencil printing apparatus used in the first to seventh embodiments of the present invention.

FIG. 17 is a flowchart showing the operation of the stencil printing apparatus according to the first or eighth embodiment of the present invention.

FIG. 18 is a flowchart showing the operation of the stencil printing apparatus according to the second or ninth embodiment of the present invention.

FIG. 19 is a flowchart showing the operation of the stencil printing apparatus according to the third or tenth embodiment of the present invention.

FIG. 20 is a flowchart showing the operation of the stencil printing apparatus according to the fourth or eleventh embodiment of the present invention.

FIG. 21 is a flowchart showing the operation of the stencil printing apparatus according to the fifth or twelfth embodiment of the present invention.

FIG. 22 is a flowchart showing the operation of the stencil printing apparatus according to the sixth or thirteenth embodiment of the present invention.

FIG. 23 is a flowchart showing the operation of the stencil printing apparatus according to the seventh or fourteenth embodiment of the present invention.

FIG. 24 is a schematic view of a stencil printing machine used in the eighth to fourteenth embodiments of the present invention.

FIG. 25 is a side view showing a plate cylinder contacting / separating means of a stencil printing machine used in the eighth to fourteenth embodiments of the present invention.

FIG. 26 is a block diagram of control means of a stencil printing machine used in the eighth to fourteenth embodiments of the present invention.

FIG. 27 is a block diagram of control means of a stencil printing machine used in a modification of the first embodiment of the present invention.

[Explanation of symbols]

1,174 stencil printing machine 33,40,190,242 New blank master (master) 79,212 First plate cylinder 80,213 Second plate cylinder 83 First master support plate (porous support plate) 84 First ink supply means 91 First ink roller moving means 95 First ink roller 106 Second master support plate (porous support plate) 107 Second ink supply means 108 Second ink roller moving means 117 2 ink roller 165 time measuring means (timer) 166, 169, 172, 173, 236, 237, 2
38,239,240,248,251,252,25
3,254 control means 167,168,199,203 printed master 221 contacting / separating means P printing paper

Claims (25)

[Claims] 1. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatably pressed against the inner peripheral surface of the first master support plate. A second ink roller having a first ink supply means and a second ink roller provided inside the second plate cylinder and rotatable by being pressed against an inner peripheral surface of a second master support plate. Means for counting the time elapsed from the end of printing, and one of the first and second ink rollers is provided with a first
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. The cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, so that the printed masters are first and second.
1st and 2nd after peeling from the master support plate
A new unmade master is wound around each of the master support plates, and the one or more ink rollers are moved from the separated position to the pressure contact position to expand the first or second master support plate. The first and second plate cylinders are pressed against each other via the unmade master and the at least one plate cylinder is rotated a predetermined number of times, and then the unmade master is peeled from the first and second master support plates, respectively. Stencil printing method, wherein new stencil masters are wound around the first and second master support plates and printing is performed. 2. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed close to the first plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate, and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press-contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller opposed to the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply means for supplying ink to the second plate cylinder, and a first ink roller being moved from the first separated position to a first ink roller. First ink roller moving means for moving to the pressure contact position, second ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and elapsed time from the end of printing A stencil printing apparatus using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the state in which the first and second ink rollers are moved, the first and second ink rollers are moved to operate the first and second ink rollers. The first and second plate cylinders are pressed against each other via the printed master by moving them to the second pressing position and expanding the first and second master support plates, respectively. And also by rotating one of the plate cylinder by a predetermined number of times, the printed master first
And after the first master support plate is peeled off from the first master support plate, respectively.
And a new blank master is wound around the second master support plate, respectively, and the first and second ink rollers are moved to operate the first and second ink rollers.
By moving the first and second master support plates to the first and second master support plates, respectively.
And pressing at least one of the plate cylinders a predetermined number of times through the unplated master, and then peeling the unplated master from the first and second master support plates, respectively. And a stencil printing method, wherein new stencil masters are wound around the second master support plate and printing is performed. 3. A first plate cylinder on which a master is wound on an outer peripheral surface and rotatable around a rotation axis thereof, and a second plate cylinder on which a master is wound on an outer peripheral surface and rotatable about a rotation axis thereof. A plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring an elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around the outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds any predetermined time, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is pressed. The printed master is rotated a predetermined number of times, and the printed master is rotated around the outer peripheral surfaces of the first and second plate cylinders. After peeling off, respectively, new blank masters are wound around the outer peripheral surfaces of the first and second plate cylinders, respectively, and the contact / separation means is operated to move the first and second plate cylinders through the blank masters. And at least one of the plate cylinders is rotated a predetermined number of times, and then, after the blank master is peeled off from the outer peripheral surfaces of the first and second plate cylinders, the outer periphery of the first and second plate cylinders is released. A stencil printing method, wherein a new stencil master is wound around each surface and printing is performed. 4. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatably pressed against the inner peripheral surface of the first master support plate. A second ink roller having a first ink supply means and a second ink roller provided inside the second plate cylinder and rotatable by being pressed against an inner peripheral surface of a second master support plate. Means, and a time measuring means for measuring an elapsed time from the end of printing, and one of the first and second ink rollers is provided with the first or second ink roller.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one ink roller from the separation position to the pressure contact position to expand the first or second master support plate. The cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, so that the printed masters are first and second.
Moving the one of the ink rollers from the separation position to the press-contact position after the first and second master support plates are swelled after being separated from the master support plate of the first and second plates, respectively. After the cylinders are pressed against each other and at least one of the plate cylinders is rotated a predetermined number of times, a new blank master is wound around each of the first and second master support plates, and the one ink roller is moved from the separated position. By moving the first or second master support plate to the press-contact position and expanding the first or second master support plate, the first and second plate cylinders are pressed against each other via the unmade master and at least one of the plate cylinders is pressed. Rotate a predetermined number of times, then
A stencil printing method, wherein the unstencil master is peeled off from the first and second master support plates, respectively, and a new stencil master is wound on each of the first and second master support plates to perform printing. . 5. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed in close proximity to the first plate cylinder, and a first spaced position separated from the inner peripheral surface of the first master support plate and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller facing the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply means for supplying ink to the second plate cylinder, and a first ink roller being moved from the first separated position to a first ink roller. First ink roller moving means for moving to the pressure contact position, second ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and elapsed time from the end of printing A stencil printing apparatus using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the state in which the first and second ink rollers are moved, the first and second ink rollers are moved to operate the first and second ink rollers. The first and second plate cylinders are pressed against each other via the printed master by moving them to the second pressing position and expanding the first and second master support plates, respectively. And also by rotating one of the plate cylinder by a predetermined number of times, the printed master first
And after the first master support plate is peeled off from the first master support plate, respectively.
And operating the second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and to swell the first and second master support plates, respectively. After the first and second plate cylinders are pressed against each other and at least one of the plate cylinders is rotated a predetermined number of times, a new blank master is wound around the first and second master support plates, respectively. And operating the second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and to swell the first and second master support plates, respectively. , The first and second plate cylinders are pressed against each other via the blank plate master, and at least one plate cylinder is rotated a predetermined number of times, and then the blank plate master is supported by the first and second masters. Stencil printing method and performing printing by winding each new stencil master on the first and second master support plate after peeling more, respectively. 6. A first plate cylinder on which a master is wound on an outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder on which a master is wound on an outer peripheral surface and rotatable around its rotational axis. A plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring an elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds any predetermined time, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is pressed. The printed master is rotated a predetermined number of times, and the printed master is rotated around the outer peripheral surfaces of the first and second plate cylinders. After the peeling, the first and second plate cylinders are pressed against each other by operating the contact / separation means, and at least one of the plate cylinders is rotated a predetermined number of times. A new blank master is wound on each surface, and the first and second plate cylinders are pressed against each other via the blank master by operating the contact / separation means, and at least one of the blank cylinders is rotated a predetermined number of times. After that, the unprinted masters are peeled off from the outer peripheral surfaces of the first and second plate cylinders, respectively, and then the new masters are wound around the outer peripheral surfaces of the first and second plate cylinders to perform printing. A stencil printing method, characterized in that: 7. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatable by being pressed against the inner peripheral surface of the first master support plate. A first ink supply means, and a second ink supply provided inside the second plate cylinder, the second ink roller being rotatably pressed against the inner peripheral surface of the second master support plate. Means, and a time measuring means for measuring the time elapsed from the end of printing.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound around the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one of the ink rollers from the separated position to the pressure contact position to expand the first or second master support plate. The cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates. of The first and second plate cylinders are pressed against each other via the printed master by moving the ink roller from the separated position to the pressed position to expand the first or second master support plate. And at least one of the plate cylinders is rotated a predetermined number of times, and thereafter, after the printed master is peeled off from the other one of the first and second master support plates, new plate making is performed on the first and second master support plates, respectively. Stencil printing method, wherein a stencil master is wound and printing is performed. 8. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, a peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed close to the first plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate, and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press-contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller opposed to the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply means for supplying ink to the second plate cylinder, and a first ink roller being moved from the first separated position to a first ink roller. First ink roller moving means for moving to the pressure contact position, second ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and elapsed time from the end of printing A stencil printing apparatus using a stencil printing apparatus capable of performing one-step double-sided printing, wherein printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the state in which the first and second ink rollers are moved, the first and second ink rollers are moved to operate the first and second ink rollers. The first and second plate cylinders are pressed against each other via the printed master by moving them to the second pressing position and expanding the first and second master support plates, respectively. After rotating one of the plate cylinders a predetermined number of times and peeling the printed master from one of the first and second master support plates, the first and second ink roller moving means are operated to move the first and second ink roller moving means. The first and second plate cylinders are moved to the first and second press contact positions, respectively, and the first and second master support plates are respectively expanded, so that the first and second plate cylinders are printed. The master is pressed against each other via the master and at least one of the plate cylinders is rotated a predetermined number of times. Thereafter, the printed master is peeled off from the other one of the first and second master support plates, and then the first and second masters are separated. A stencil printing method, wherein a new stencil master is wound around each master support plate and printing is performed. 9. A first plate cylinder, on which a master is wound on an outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder, on which a master is wound on an outer peripheral surface and rotatable around its rotation axis, are provided. Plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring the elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds any predetermined time, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is pressed. Rotated by a predetermined number of times, before the outer peripheral surface of one of the first and second plate cylinders After peeling the printed master, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling the printed master from the outer peripheral surface of the other of the first and second plate cylinders, printing is performed by wrapping new perforated masters on the outer peripheral surfaces of the first and second plate cylinders, respectively. A stencil printing method characterized by the above-mentioned. 10. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatable by being pressed against the inner peripheral surface of the first master support plate. A first ink supply means, and a second ink supply provided inside the second plate cylinder, the second ink roller being rotatably pressed against the inner peripheral surface of the second master support plate. Means for counting the time elapsed from the end of printing, and one of the first and second ink rollers is provided with a first
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound around the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one of the ink rollers from the separated position to the pressure contact position to expand the first or second master support plate. The cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates. of The first and second plate cylinders are pressed against each other via the printed master by moving the ink roller from the separated position to the pressed position to expand the first or second master support plate. And at least one of the plate cylinders is rotated a predetermined number of times, and after removing the printed master from the other of the first and second master support plates, new unprinted masters are respectively placed on the first and second master support plates. And moving the one of the ink rollers from the separation position to the pressure contact position to bulge the first or second master support plate. After the plate masters are pressed against each other and at least one of the plate cylinders is rotated a predetermined number of times, and then the unprinted masters are separated from the first and second master support plates, respectively. Stencil printing method and performing printing by winding a new stencil master to the first and second master support plate. 11. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed close to the first plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate, and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press-contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller opposed to the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply unit for supplying ink to the second plate cylinder; and First ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and a passage from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, comprising a time counting means for counting time, wherein the printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the state in which the printing has been performed, the first and second ink rollers are operated by operating the first and second ink roller moving means. And the second press contact position, respectively, and the first and second master support plates are respectively bulged, so that the first and second plate cylinders are pressed against each other via the printed master and reduced. At least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates, and then the first and second ink roller moving means are operated. The first and second plate rollers are moved to the first and second press contact positions, respectively, and the first and second master support plates are respectively bulged, so that the first and second plate cylinders are printed. The first and second masters are pressed against each other via the finished master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from the other one of the first and second master support plates. A new blank master is wound around the support plate, and the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressing positions, respectively. By bulging the first and second master support plates, the first and second plate cylinders are pressed against each other via the unmade master and at least one of the plate cylinders is rotated a predetermined number of times. Stencil printing wherein the unprinted masters are peeled off from the first and second master support plates, respectively, and the new masters are wound around the first and second master support plates for printing. Method. 12. A first plate cylinder having a master wound around its outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder wound around its outer peripheral surface and rotatable around its rotation axis. A plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring an elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds any predetermined time, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is pressed. Rotated a predetermined number of times, from either the outer peripheral surface of the first or second plate cylinder After peeling the printed master, the first and second plate cylinders are pressed against each other via the printed master by operating the contacting / separating means, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling the printed master from the outer peripheral surface of the other one of the first and second plate cylinders, new unprinted masters are wound around the outer peripheral surfaces of the first and second plate cylinders, respectively, and the contact / separation means is removed. Actuating the first and second plate cylinders against each other via the unplated master and rotating at least one of the plate cylinders a predetermined number of times, and then moving the unplated master into the first and second plate cylinders A stencil printing method, wherein new printing masters are wound around respective outer circumferential surfaces of the first and second plate cylinders after peeling off from the outer circumferential surface of the stencil. 13. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatably pressed against the inner peripheral surface of the first master support plate. A second ink roller having a first ink supply means and a second ink roller provided inside the second plate cylinder and rotatable by being pressed against an inner peripheral surface of a second master support plate. Means for counting the time elapsed from the end of printing, and one of the first and second ink rollers is provided with a first
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound around the first and second master support plates, respectively. When an arbitrary predetermined time is exceeded, the first and second printing plates are moved by moving the one of the ink rollers from the separated position to the pressure contact position to expand the first or second master support plate. The cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates. of The first and second plate cylinders are pressed against each other via the printed master by moving the ink roller from the separated position to the pressed position to expand the first or second master support plate. And at least one of the plate cylinders is rotated a predetermined number of times, and after removing the printed master from the other one of the first and second master support plates, new blank masters are respectively placed on the first and second master support plates. And moving the one ink roller from the separation position to the pressure contact position to bulge the first or second master support plate, thereby causing the first and second plate cylinders to The first and second plate cylinders are rotated by a predetermined number of times while being pressed against each other via a plate-making master.
Alternatively, after the blank master is peeled off from one of the second master support plates, the one ink roller is moved from the separated position to the pressure contact position to expand the first or second master support plate. By causing the first and second plate cylinders to come into pressure contact with each other via the unprinted master and rotating at least one of the plate cylinders a predetermined number of times,
After that, the unprinted master is peeled off from one of the first and second master support plates, and then the new master is wound around each of the first and second master support plates to perform printing. Stencil printing method. 14. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed close to the first plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate, and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press-contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller opposed to the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply means for supplying ink to the second plate cylinder, and a first ink roller being firstly moved from a first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and a passage from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, comprising a time counting means for counting time, wherein the printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the state in which the printing has been performed, the first and second ink rollers are operated by operating the first and second ink roller moving means. And the second press contact position, respectively, and the first and second master support plates are respectively bulged, so that the first and second plate cylinders are pressed against each other via the printed master and reduced. At least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from one of the first and second master support plates, and then the first and second ink roller moving means are operated. The first and second plate rollers are moved to the first and second press contact positions, respectively, and the first and second master support plates are respectively bulged, so that the first and second plate cylinders are printed. The first and second masters are pressed against each other via the finished master and at least one of the plate cylinders is rotated a predetermined number of times, and the printed master is peeled off from the other one of the first and second master support plates. A new blank master is wound around the support plate, and the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressing positions, respectively. By bulging the first and second master support plates, respectively, the first and second plate cylinders are pressed against each other via the unmade master and at least one of the plate cylinders is rotated a predetermined number of times. After peeling the blank master from one of the first and second master support plates,
And operating the second ink roller moving means to move the first and second ink rollers to the first and second press contact positions, respectively, and to swell the first and second master support plates, respectively. , The first and second plate cylinders are pressed against each other via the blank plate master, and at least one of the plate cylinders is rotated a predetermined number of times. A stencil printing method, characterized in that a new plate-making master is wound around each of the first and second master support plates after the unplated master is peeled off and printing is performed. 15. A first plate cylinder on which a master is wound on an outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder on which a master is wound on an outer peripheral surface and rotatable around its rotation axis. A plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring an elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds any predetermined time, the first and second plate cylinders are pressed against each other via the printed master by operating the contact / separation means, and at least one of the plate cylinders is pressed. Rotated a predetermined number of times, from either the outer peripheral surface of the first or second plate cylinder After peeling the printed master, the first and second plate cylinders are pressed against each other via the printed master by operating the contacting / separating means, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling the printed master from the outer peripheral surface of the other one of the first and second plate cylinders, new unprinted masters are wound around the outer peripheral surfaces of the first and second plate cylinders, respectively, and the contact / separation means is removed. Actuating the first and second plate cylinders against each other via the unprinted master and rotating at least one of the plate cylinders a predetermined number of times to obtain an outer peripheral surface of one of the first and second plate cylinders; After peeling off the unmade master, the first and second plate cylinders are pressed against each other via the unmade master by operating the contact and separation means, and at least one of the plate cylinders is rotated a predetermined number of times, Then the first After the unprinted master has been peeled off from one of the outer peripheral surfaces of the second plate cylinder, printing is performed by winding new perforated masters onto the outer peripheral surfaces of the first and second plate cylinders, respectively. Stencil printing method. 16. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatably pressed against the inner peripheral surface of the first master support plate. A second ink roller having a first ink supply means and a second ink roller provided inside the second plate cylinder and rotatable by being pressed against an inner peripheral surface of a second master support plate. Means for counting the time elapsed from the end of printing, and one of the first and second ink rollers is provided with a first
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, is performed. A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound on the first and second master support plates, respectively. If any predetermined time is exceeded, the first or second
After peeling the printed master from either one of the master support plates, the one ink roller is moved from the separation position to the press-contact position to expand the first or second master support plate. Thereby, the first and second plate cylinders are pressed against each other via the printed master, and at least one of the plate cylinders is rotated a predetermined number of times, and then the first and second master support plates are rotated by the other. A stencil printing method, wherein new printing masters are wound around the first and second master support plates after the printed masters are peeled off and printing is performed. 17. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed close to the first plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate, and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press-contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller opposed to the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply means for supplying ink to the second plate cylinder, and a first ink roller being firstly moved from a first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and a passage from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, comprising a time counting means for counting time, wherein the printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the state in which the
After removing the printed master from one of the master support plates, the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressure contact positions. The first and second plate cylinders are pressed against each other via the printed master by moving each of them to expand the first and second master support plates, and at least one of the plate cylinders is pressed a predetermined number of times. And then, after peeling the printed master from one of the first and second master support plates, first and second
A stencil printing method, wherein a new stencil master is wound around each of the master support plates for printing. 18. A first plate cylinder having a master wound around its outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder wound around its outer peripheral surface and rotatable around its rotation axis. A plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring an elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds an arbitrary predetermined time, the first or second
After peeling the printed master from one of the outer circumferential surfaces of the plate cylinders, the contacting / separating means is operated to press the first and second plate cylinders together with each other via the printed master, and at least one of the cylinders is pressed. Is rotated a predetermined number of times, and then the printed master is peeled off from the outer peripheral surface of one of the first and second plate cylinders. A stencil printing method, characterized in that a new stencil master is wound and printed. 19. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. And a first ink roller provided inside the first plate cylinder and rotatably pressed against the inner peripheral surface of the first master support plate. A second ink roller having a first ink supply means and a second ink roller provided inside the second plate cylinder and rotatable by being pressed against an inner peripheral surface of a second master support plate. Means, and a time measuring means for measuring the time elapsed from the end of printing.
Alternatively, the one-step double-sided printing, which is movably supported by the second ink supply means at a separated position separated from the inner peripheral surface of the first or second master support plate and a pressure contact position pressed against the inner peripheral surface, A stencil printing method using a stencil printing apparatus that can be performed, wherein the elapsed time when the next printing is performed from a state in which the printed master is wound on the first and second master support plates, respectively. When an arbitrary predetermined time has passed, the printed master is peeled off from the first and second master support plates, respectively, and then a new blank master is wound on one of the first and second master support plates. Then, the one of the ink rollers is moved from the separated position to the pressure contact position, and the first ink roller is moved to the first position.
Alternatively, by inflating the second master support plate, the first and second plate cylinders are brought into pressure contact with each other via the blank master, and at least one of the plate cylinders is rotated a predetermined number of times. After peeling off the master
And a stencil printing method, wherein new stencil masters are wound around the second master support plate and printing is performed. 20. A first plate cylinder having a first master support plate having flexibility, and a second master support plate having flexibility, the peripheral surface of which is provided on the first plate cylinder. A second plate cylinder disposed close to the first plate cylinder, a first separation position provided inside the first plate cylinder and separated from the inner peripheral surface of the first master support plate, and pressed against the inner peripheral surface. A first ink roller that selectively occupies a first press-contact position, and a first ink supply unit that supplies ink to the first plate cylinder; and a first ink supply unit that is provided inside the second plate cylinder. A second ink roller opposed to the first ink roller, selectively occupying a second spaced position separated from the inner peripheral surface of the second master support plate and a second pressed position pressed against the inner peripheral surface; A second ink supply means for supplying ink to the second plate cylinder, and a first ink roller being firstly moved from a first separated position. First ink roller moving means for moving the second ink roller from the second separation position to the second pressure position, and first ink roller moving means for moving the second ink roller from the second separation position to the second press position. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, comprising a time counting means for counting time, wherein the printed masters are respectively wound around first and second master support plates. When the elapsed time exceeds an arbitrary predetermined time when the next printing is performed from the performed state, after the printed master is separated from the first and second master supporting plates, the first or second printing is performed. New master plate is wound on one of the master support plates, and the first and second ink roller moving means are operated to move the first and second ink rollers to the first and second pressure contact positions. It The first and second master cylinders are swelled so that the first and second plate cylinders are pressed against each other via the blank master, and at least one of the cylinders is pressed a predetermined number of times. A stencil printing method, wherein the printing is carried out by rotating the master and then peeling off the unstenciled master and then winding the new masters on the first and second master support plates, respectively. 21. A first plate cylinder having a master wound around its outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder wound with its master around its outer peripheral surface and rotatable around its rotation axis. A plate cylinder, contacting / separating means for moving the outer peripheral surface of the first plate cylinder and the outer peripheral surface of the second plate cylinder toward and away from each other, and timing means for measuring an elapsed time from the end of printing. A stencil printing method using a stencil printing apparatus capable of performing one-step double-sided printing, wherein the next printing is performed from a state in which printed masters are wound around the outer peripheral surfaces of first and second plate cylinders, respectively. When the elapsed time exceeds an arbitrary predetermined time, the printed master is peeled off from the outer peripheral surfaces of the first and second plate cylinders, respectively, and then one of the first and second plate cylinders is released. A new blank master is wound on the outer peripheral surface of the first and second contactors, and the first and second first and second masters are operated by operating the contact / separation means. The plate cylinders are pressed against each other via the unplated master, and at least one of the plate cylinders is rotated a predetermined number of times. A stencil printing method, wherein a stencil master is wound and printed. 22. A first plate cylinder having a master wound around its outer peripheral surface and rotatable around its rotation axis, and a second plate cylinder wound with its master around its outer peripheral surface and rotatable around its rotation axis. A stencil printing method using a stencil printing apparatus that includes a stencil printing machine and a time counting means for counting an elapsed time from the end of printing, and is capable of performing one-step double-sided printing, wherein the next printing is performed. When the elapsed time exceeds an arbitrary predetermined time, the outer peripheral surfaces of the first and second plate cylinders are pressed against each other, and at least one of the plate cylinders is rotated a predetermined number of times. . 23. The number of rotations of the first and second plate cylinders during press contact between the first plate cylinder and the second plate cylinder is controlled according to the length of the elapsed time. A stencil printing method according to any one of claims 1 to 22. 24. The stencil printing machine further comprises a temperature detecting means for detecting a temperature inside the machine, wherein the rotation of the first and second plate cylinders when the first and second plate cylinders are pressed against each other. The stencil printing method according to claim 23, wherein the number of times is corrected based on the temperature detected by the temperature detecting means. 25. The stencil printing machine further comprises humidity detecting means for detecting humidity inside the machine, and rotation of the first and second plate cylinders when the first and second plate cylinders are pressed against each other. The stencil printing method according to claim 24, wherein the number of times is corrected based on the temperature detected by the temperature detecting means and the humidity detected by the humidity detecting means.