JPH11129599A - Method for stencil printing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for stencil printing to perform a reduction in a printing cost by preventing a blur or an offset in a double-side printing, and suppressing occurrence of a spoilage as much as possible. SOLUTION: In a stencil printer 1 having a first plate cylinder 15, a transfer cylinder 63 opposed to the cylinder 15 via a sheet conveying passage, and a second plate cylinder 40, thereby transferring an image to both side surfaces of a printing sheet S at the time of bringing the cylinder 15 into pressure contact with the cylinder 63, in the case of printing from the state that printed masters 9, 34 are respectively wound on the cylinders 15, 40, the cylinders 15, 40 used for printing are brought into pressure contact with the cylinder 63 via the masters 9, 34, then they are rotated at predetermined number of times, and then the masters 9, 34 are released from the cylinders 15, 40. Thereafter, new engraved masters 9, 34 are respectively wound on the cylinders 15, 40 and printing is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a printing method using a stencil printing apparatus for performing double-sided printing or single-sided printing by winding a perforated master.

[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).
And 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. After the plate is heated and perforated with a thermal head, the plate is wound around a plate cylinder, ink is supplied to the inner peripheral surface of the plate cylinder by ink supply means provided inside the plate cylinder, and a pressing member such as a press roller or an impression cylinder is provided. 2. Description of the Related Art A digital thermosensitive stencil printing apparatus that performs printing by pressing printing paper against a plate cylinder to transfer ink oozed from a plate cylinder opening portion and a master perforation portion to printing paper is well known.

[0003] In stencil printing using this printing apparatus, in recent years, double-sided printing in which printing is performed on both sides of printing paper tends to increase due to reasons such as saving printing paper or preventing an increase in files. 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 again. However, printing on the other side can produce a two-sided printed material.However, it is troublesome to set the printed paper once discharged in the paper feeder or to align the printed paper after single-sided printing. There was a problem that it is.

[0004] In addition, the printed material after printing is not sufficiently dried with ink, and if printing is to be performed immediately on the back side, the conveying roller or pressing member is pressed against the image area, and the printed image is disturbed or stained. In most cases,
After several hours or more, printing on the back surface is performed. In particular, when there is a solid image, drying for a long time is necessary, and printing on the back surface has been performed the next day.

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 the paper feeding operation is performed twice, which takes too much time. There was a point.

Various techniques have been disclosed so far for transferring a print image to both sides of a print sheet in one pass of paper, and the technique mainly includes two plate cylinders and a transfer cylinder.
By changing the form of the ink transferred to the printing paper from the conventional raised shape to the pressed-in shape, the drying time of the ink can be shortened, thereby enabling sufficient drying and allowing the printing paper to be discharged from the printing paper and discharged from the surface of the conveying means. A technique for preventing the transfer of ink to the ink is disclosed in JP-A-8-118774.

[0007]

According to the technique disclosed in the above publication, after the printing by the master of the previous plate (printed master) is completed, the plate making operation for the next original is performed, and the new master is transferred to the plate cylinder. Is automatically wound and the printing operation is started. 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 water contained in the ink held in the support cylinder of the plate cylinder and the mesh screen evaporates, the volume of the ink decreases, and the roll is newly wound. It takes time for the ink to permeate the porous support of the master and to exude from the perforated portion of the thermoplastic resin film.

The ink from which the water has evaporated has a reduced viscosity and is in a sticky state. The ink oozes out of the perforated portion of the thermoplastic resin film and is directly transferred to printing paper. Even if transferred to the printing paper via, it causes bleeding or set-off, especially in double-sided printing having images on both sides of the printing paper, this viscosity is good until the ink whose viscosity has been reduced is consumed There is a problem in that a printed matter cannot be obtained, and several to several tens of waste sheets are generated until ink is supplied to obtain a good print image for a new master.

The present invention solves the above-mentioned problems, and prevents the occurrence of bleeding or set-off in double-sided printing, and minimizes the occurrence of waste paper, thereby achieving a printing method capable of reducing printing cost. The purpose is to provide.

[0011]

According to the first aspect of the present invention,
A rotatable first plate cylinder on which a master is wound around the outer peripheral surface, a rotatable transfer cylinder disposed at a position facing the first plate cylinder via a sheet conveying path, and a vicinity of the transfer cylinder Arranged in
A rotatable second plate cylinder for winding a master around the outer peripheral surface, wherein the first and second plate cylinders are provided so as to be able to freely contact and separate from the transfer cylinder, respectively, and supply the paper conveying path. An image from the first plate cylinder is transferred to one surface of the fed printing paper when the first printing cylinder and the transfer cylinder are pressed against each other, and a second surface is printed on the other surface of the printing paper. A stencil printing method using a stencil printing apparatus in which an image transferred to the transfer cylinder at the time of press contact between the plate cylinder and the transfer cylinder is transferred by the transfer cylinder. When printing is performed from a state in which the printed master is wound, the plate cylinder and the transfer cylinder used for printing are pressed against each other via the printed master and rotated by a predetermined number of times. Peeling the printed master from the plate cylinder,
Thereafter, printing is performed by winding a new plate-making master on the plate cylinder.

According to a second aspect of the present invention, a rotatable first plate cylinder on which a master is wound around an outer peripheral surface is disposed at a position opposed to the first plate cylinder via a sheet conveying path. A rotatable transfer cylinder capable of winding an ink absorbing member on a surface thereof, a rotatable second plate cylinder disposed near the transfer cylinder and winding a master on an outer peripheral surface, and a rotatable transfer cylinder. Comprising an ink absorbing member supply means for supplying the ink absorbing member toward the
The first and second plate cylinders are provided so as to be able to freely contact and separate from the transfer cylinder, respectively. The first plate cylinder and the transfer cylinder are provided on one surface of the printing paper fed through the paper transport path. The image transferred from the first plate cylinder is transferred at the time of pressing against the printing plate, and the image transferred to the transfer cylinder at the time of pressing the second plate cylinder and the transfer cylinder is pressed onto the other surface of the printing paper. A stencil printing method using a stencil printing apparatus that is transferred by the transfer cylinder, wherein printing is performed from a state in which a printed master is wound around each of a first and a second plate cylinder. After the ink absorbing member is wound on the plate, the plate cylinder and the transfer cylinder used for printing are pressed against each other via the printed master and the ink absorbing member and rotated by a predetermined number of times. The printed master from the torso,
Further, the ink absorbing member is peeled off from the transfer cylinder, and thereafter, printing is performed by winding a new master made on the plate cylinder.

According to a third aspect of the present invention, there is provided a rotatable first plate cylinder on which a master is wound on an outer peripheral surface, and a rotatable first plate cylinder disposed at a position opposed to the first plate cylinder via a sheet conveying path. A rotatable transfer cylinder capable of winding an ink absorbing member on a surface thereof, a rotatable second plate cylinder disposed near the transfer cylinder and winding a master on an outer peripheral surface, and a rotatable transfer cylinder. Comprising an ink absorbing member supply means for supplying the ink absorbing member toward the
The first and second plate cylinders are provided so as to be able to freely contact and separate from the transfer cylinder, respectively. The first plate cylinder and the transfer cylinder are provided on one surface of the printing paper fed through the paper transport path. The image transferred from the first plate cylinder is transferred at the time of pressing against the printing plate, and the image transferred to the transfer cylinder at the time of pressing the second plate cylinder and the transfer cylinder is pressed onto the other surface of the printing paper. A stencil printing method using a stencil printing apparatus that is transferred by the transfer cylinder, wherein the stencil printing apparatus is used for printing when printing is performed from a state where a printed master is wound around each of the first and second plate cylinders. Performing the separation of the printed master from the plate cylinder and the winding of the ink absorbing member around the transfer cylinder, and pressing the plate cylinder and the transfer cylinder against each other via the ink absorbing member. After each rotation by a predetermined number of times, the transfer cylinder The absorbent member was peeled off, then, and performing printing by winding a new stencil master on the plate cylinder.

According to a fourth aspect of the present invention, there is provided a rotatable first plate cylinder on which a master is wound around an outer peripheral surface, and a first plate cylinder disposed at a position opposed to the first plate cylinder via a sheet conveying path. A first transfer cylinder rotatable around which a printing paper can be wound, and a second rotatable plate cylinder disposed near the transfer cylinder and winding a master around an outer peripheral surface thereof; And a second plate cylinder are provided so as to be able to freely contact and separate from the transfer cylinder, respectively. On one surface of the printing paper fed through the sheet transport path, the first plate cylinder and the transfer cylinder The image transferred from the first plate cylinder during the pressing is transferred, and the image transferred to the transfer cylinder during the pressing between the second plate cylinder and the transfer cylinder is transferred onto the other surface of the printing paper. What is claimed is: 1. A stencil printing method using a stencil printing device transferred by a cylinder, wherein the first and second plate cylinders each have a printed mask. When printing is performed from the wound state, the printing paper is wound around the transfer cylinder, and the plate cylinder and the transfer cylinder used for printing are mutually moved via the printed master and the printing paper. After being pressed and rotated a predetermined number of times, the printed master is peeled off from the plate cylinder, and the printing paper is peeled off from the transfer cylinder. Thereafter, a new plate-making master is wound around the plate cylinder. And printing.

According to a fifth aspect of the present invention, there is provided a rotatable first plate cylinder on which a master is wound on an outer peripheral surface, and a first plate cylinder disposed at a position opposed to the first plate cylinder via a sheet conveying path. A first transfer cylinder rotatable around which a printing paper can be wound, and a second rotatable plate cylinder disposed near the transfer cylinder and winding a master around an outer peripheral surface thereof; And a second plate cylinder are provided so as to be able to freely contact and separate from the transfer cylinder, respectively. On one surface of the printing paper fed through the sheet transport path, the first plate cylinder and the transfer cylinder The image transferred from the first plate cylinder during the pressing is transferred, and the image transferred to the transfer cylinder during the pressing between the second plate cylinder and the transfer cylinder is transferred onto the other surface of the printing paper. What is claimed is: 1. A stencil printing method using a stencil printing device transferred by a cylinder, wherein the first and second plate cylinders each have a printed mask. When printing is performed from the wound state, peeling of the printed master wound on the plate cylinder used for printing and winding of the printing paper on the transfer cylinder, the printing plate After the cylinder and the transfer cylinder are pressed against each other via the printing paper and rotated by a predetermined number of times, the printing paper is peeled off from the transfer cylinder, and then, a new plate-making master is wound around the plate cylinder. And printing is performed.

According to a sixth aspect of the present invention, there is provided a rotatable first plate cylinder on which a master is wound around an outer peripheral surface, and the first plate cylinder is disposed at a position opposed to the first plate cylinder via a sheet conveying path. A rotatable transfer cylinder capable of winding a master on a surface thereof, and a rotatable second printing cylinder disposed near the transfer cylinder and winding the master on an outer peripheral surface; The second plate cylinder is provided so as to be able to freely contact and separate from the transfer cylinder, and one surface of the printing paper fed through the paper transport path is pressed against the first plate cylinder and the transfer cylinder. The image transferred from the first plate cylinder is transferred to the other side of the printing paper, and the image transferred to the transfer cylinder when the second plate cylinder is pressed against the transfer cylinder is transferred to the transfer cylinder. Stencil printing method using a stencil printing device transferred by a stencil printing machine, wherein printed masters are respectively printed on first and second plate cylinders. When printing is performed from the wound state, the unprinted master is wound around the transfer cylinder in a direction in which the support faces the surfaces of the first and second plate cylinders, and a printing plate used for printing. After the cylinder and the transfer cylinder are pressed against each other via the printed master and the unprinted master and rotated by a predetermined number of times, the printed master is transferred from the plate cylinder, and the unprinted master is transferred from the transfer cylinder. The plate-making masters are separated from each other, and thereafter printing is performed by winding a new plate-making master around the plate cylinder.

According to a seventh aspect of the present invention, there is provided a rotatable first plate cylinder on which a master is wound on an outer peripheral surface, and a rotatable first plate cylinder disposed at a position opposed to the first plate cylinder via a sheet conveying path. A rotatable transfer cylinder capable of winding a master on a surface thereof, and a rotatable second printing cylinder disposed near the transfer cylinder and winding the master on an outer peripheral surface; The second plate cylinder is provided so as to be able to freely contact and separate from the transfer cylinder, and one surface of the printing paper fed through the paper transport path is pressed against the first plate cylinder and the transfer cylinder. The image transferred from the first plate cylinder is transferred to the other side of the printing paper, and the image transferred to the transfer cylinder when the second plate cylinder is pressed against the transfer cylinder is transferred to the transfer cylinder. Stencil printing method using a stencil printing device transferred by a stencil printing machine, wherein printed masters are respectively printed on first and second plate cylinders. When printing is performed from the wound state, the printed master wound on the plate cylinder used for printing is peeled off, and a support is provided on the transfer cylinder with first and second plate cylinders. After winding the unprinted master in a direction opposite to the surface of the master cylinder, pressing the plate cylinder and the transfer cylinder against each other via the unprinted master and rotating each of them for a predetermined number of times, and then winding the master on the transfer cylinder. The unprinted master is peeled off, and then a new master having been made is wound around the plate cylinder to perform printing.

According to the present invention, a rotatable first plate cylinder on which a master is wound around the outer peripheral surface, and a rotary plate disposed at a position opposed to the first plate cylinder via a sheet conveying path. A free transfer cylinder, and a rotatable second plate cylinder disposed near the transfer cylinder and winding a master around the outer peripheral surface, wherein the first and second plate cylinders are mounted on the transfer cylinder. The first printing cylinder, which is provided so as to be able to contact and separate from the transfer cylinder, is provided on one surface of the printing paper fed through the paper transport path when the first printing cylinder and the transfer cylinder are pressed against each other.
An image transferred from the plate cylinder is transferred by the transfer cylinder onto the other surface of the printing paper when the second plate cylinder is pressed against the transfer cylinder. A stencil printing method using a stencil printing apparatus, wherein when printing is performed from a state in which a printed master is wound on each of a first and a second plate cylinder, the stencil is wound on a plate cylinder used for printing. After the printed master has been peeled off, an unprinted master is wound around the plate cylinder, and the plate cylinder and the transfer cylinder are pressed against each other via the unprinted master and rotated a predetermined number of times. Thereafter, the unprinted master wound around the plate cylinder is peeled off, and thereafter, printing is performed by winding a new master made on the plate cylinder.

According to a ninth aspect of the present invention, in the stencil printing method according to the first or eighth aspect, the transfer cylinder further includes a winding means for winding a printing paper on an outer peripheral surface, and is used for printing. When printing is performed by winding a new plate-making master on the plate cylinder to be printed, the printing paper is wound around the transfer cylinder, and the plate cylinder and the transfer cylinder are subjected to the plate-making master and the printing paper. After being pressed against each other and rotated by a predetermined number of times, the printing paper wound around the transfer cylinder is peeled off, and thereafter printing is performed.

According to a tenth aspect of the present invention, there is provided the stencil printing method according to any one of the second to seventh aspects, further comprising the step of winding a new stencil master on a plate cylinder used for printing. When performing printing by mounting, the printing paper is wound around the transfer cylinder, and the plate cylinder and the transfer cylinder are pressed against each other via the plate-making master and the printing paper, and each is rotated a predetermined number of times. Then, the printing paper wound around the transfer cylinder is peeled off, and thereafter, printing is performed.

According to an eleventh aspect of the present invention, in the stencil printing method according to any one of the first to tenth aspects, the stencil printing apparatus further comprises: It is provided with timing means for timing, and controls the number of rotations at the time of press-contact between the plate cylinder used for printing and the transfer cylinder in accordance with the length of the elapsed time counted by the timing means. .

According to a twelfth aspect of the present invention, in the stencil printing method according to the eleventh aspect, the stencil printing apparatus further includes a temperature detecting means for detecting a temperature inside the apparatus, and the temperature is detected by the temperature detecting means. The control of the number of rotations is corrected based on the temperature.

According to a thirteenth aspect of the present invention, in the stencil printing method according to the eleventh or twelfth aspect, the stencil printing apparatus further comprises a humidity detecting means for detecting the humidity inside the apparatus, and the humidity detecting means. The control of the number of rotations is corrected based on the humidity detected by the method.

[0024]

FIG. 1 is a schematic side view of a stencil printing machine 1 used in first and second embodiments of the present invention. In the figure, a stencil printing apparatus 1 includes a first stencil making unit 2, a first printing unit 3, a paper feeding unit 4, a paper discharging unit 5, a second stencil making unit 6, a second printing unit 7, a transfer unit 8, It mainly includes a plate discharging section 103, a second plate discharging section 104, and the like.

The first plate-making section 2 includes a master roll 10 formed by winding a master 9 having a structure in which a porous support and a thermoplastic resin film are bonded to each other in a roll shape, and a thermal head for making the master 9 by heat punching. 11, a platen roller 12, which conveys the master 9 while pressing it against the thermal head 11,
It mainly comprises cutting means 13 for cutting the master 9, guide plates 14 for guiding the transfer of the master 9, and the like.

The master roll 10 has its core 10a rotatably supported by a support member (not shown). The thermal head 11 having a plurality of heating elements forms a mirror image on the thermoplastic resin film surface of the master 9 in a direction opposite to the original image. The platen roller 12 is driven to rotate by a stepping motor (not shown). In the cutting means 13, the movable blade 13a rotates or moves up and down with respect to the fixed blade 13b. In the vicinity of both ends of the guide plate 14,
A pair of master transport rollers 14a and 14b that are rotationally driven by a driving unit (not shown) are provided.

Below the first plate making section 2, a first printing section 3 is provided. The first printing unit 3 includes a plate cylinder 15 serving as a first plate cylinder, and an ink supply unit 1 provided inside the plate cylinder 15.
6 mainly.

The plate cylinder 15 having a porous support cylinder and a mesh screen is rotatably supported by a support shaft 17 also serving as an ink supply pipe, and is driven to rotate by plate cylinder driving means 69 described later. . A stage 1 for holding the master 9 is provided in a non-opening portion on the outer peripheral surface of the plate cylinder 15.
8 and a clamper 19 are provided.
9 is opened and closed by opening and closing means (not shown).

The ink supply means 16 is mainly composed of a support shaft 17, an ink roller 20, and a doctor roller 21. An ink roller 20 whose outer peripheral surface is slightly separated from the inner peripheral surface of the plate cylinder 15 is rotatably supported by a side plate (not shown) supported by a support shaft 17 and is driven by a driving unit (not shown). Is rotated at a peripheral speed slightly lower than the peripheral speed of the plate cylinder 15 in the direction indicated by the arrow.

The doctor roller 21, whose outer peripheral surface is slightly spaced from the outer peripheral surface of the ink roller 20, is also rotatably supported by a side plate (not shown), like the ink roller 20, and a driving means (not shown). As a result, the ink roller 20 is driven to rotate in the opposite direction. In the vicinity of the outer peripheral surface of the ink roller 20 and the outer peripheral surface of the doctor roller 21, a wedge-shaped ink reservoir 22 is formed by the ink supplied from the support shaft 17.

The plate cylinder 15 is configured so that the outer peripheral surface thereof can be brought into contact with and separated from the outer peripheral surface of a transfer cylinder 63, which will be described later, via the conveyance path of the printing paper S by the contact / separation mechanism shown in FIG. ing. The contact / separation mechanism mainly includes a plate cylinder moving arm 49, an arm stopper 50, a cam 51, and the like.

A plate cylinder moving arm 49 having a hook-shaped free end 49a is supported by a support shaft 52 attached to the apparatus main body so that the base end can swing freely. The support shaft 17 is attached to a portion between the two.
Attachment position of the support shaft 17 and the free end 4 of the plate cylinder moving arm 49
A rotatable cam follower 53 is provided in a portion between the extension spring 9a and the other end of a tension spring 54 having one end attached to the apparatus main body.

At the position corresponding to the cam follower 53 of the apparatus body, there is provided a cam 51 which receives a driving force from a printing drum driving means 69 to be described later by a driving force transmitting means (not shown) and rotates in synchronization with the printing drum 15. Have been. The plate cylinder moving arm 49 is urged by a tension spring 54 in a direction in which the cam follower 53 comes into contact with the cam 51. When the cam follower 53 comes into contact with the large-diameter portion of the cam 51, the outer peripheral surface of the plate cylinder 15 is moved. When the cam follower 53 is separated from the outer peripheral surface of the transfer cylinder 63 and the contact between the cam follower 53 and the large-diameter portion of the cam 51 is released, the plate cylinder 1
5 is configured so that the outer peripheral surface thereof abuts on the outer peripheral surface of the transfer cylinder 63.

An arm stopper 50 having a hook-shaped free end 50a engageable with the free end 49a and having a base end rotatably supported by the apparatus main body is disposed near the free end 49a. I have. Base end and free end 50a of arm stopper 50
Is connected to a plunger 55a of a solenoid 55 attached to the apparatus main body. The arm stopper 50 is located at a position where the engagement between the free end 50a and the free end 49a is released by the operation of the solenoid 55. Is rotated. Also, a return spring 85 that urges the arm stopper 50 in a direction in which the free end 50a and the free end 49a engage with each other is attached to the plunger 55a, and the large diameter portion of the cam 51 and the cam follower 53 come into contact with each other. When the solenoid 55 is deactivated, the free end 49a
And the free end 50a are engaged.

A paper feed unit 4 is provided at the lower left of the first printing unit 3. The paper feed unit 4 mainly includes a pair of registration rollers 23, a print paper detection sensor 24, a guide plate 25, and the like.

The registration roller pair 23 holds the leading end of the printing paper S fed from a paper feed cassette (not shown), and the leading end of the image of the master 9 having been made and wound on the plate cylinder 15 and the printing paper S. The printing paper S is sent out at the timing of matching the transfer position of the printing paper S. Print paper detection sensor 24
Detects the printing paper S sent from the registration roller pair 23 and outputs a signal, and the solenoid 55 operates based on this signal. Guide plate 2 fixed to the device body
5 guides the sent printing paper S toward the first printing unit 3.

A paper discharge unit 5 is disposed on the right side of the first printing unit 3 on the downstream side in the paper transport direction. The paper discharge unit 5 mainly includes a peeling claw 26, a guide plate 27, a paper discharge conveyance unit 28, a paper discharge tray 29, and the like.

A peeling claw 26 for peeling the printing paper S from the outer peripheral surface of the plate cylinder 15 is swingably supported by the main body of the apparatus.
Are selectively positioned at a position close to the outer peripheral surface of the plate cylinder and a position separated from the outer peripheral surface of the plate cylinder 15. The guide plate 27 fixed to the apparatus main body guides the printing paper S, which has been peeled off from the outer peripheral surface of the plate cylinder 15 by the peeling claw 26, toward the paper discharge conveyance means 28. The paper discharging and conveying means 28 includes a driving roller 30 driven by a driving means (not shown), a driven roller 3
1. A plurality of endless belts 3 stretched between rollers
2. It is mainly composed of a suction fan 33 and the like, and conveys the printed printing paper S toward the discharge tray 29 while holding the printed printing paper S on the endless belt 32 by the suction force of the suction fan 33.

Below the first printing section 3, a second plate making section 6 is provided. The second plate-making section 6 includes a master roll 35 formed by winding a master 34 having a structure in which a porous support and a thermoplastic resin film are bonded together in a roll shape, a thermal head 36 for heating and perforating the master 34, and a master. A platen roller 37 for transporting the master 34 while pressing it against the thermal head 36; a cutting unit 38 for cutting the master 34;
4 mainly comprises a guide plate 39 and the like for guiding the transfer.

The master roll 35 has its core 35a rotatably supported by a support member (not shown). A thermal head 36 having a plurality of heating elements forms a master image on the master 34 in the same direction as the original image. The platen roller 37 is driven to rotate by a stepping motor (not shown). In the cutting means 38, the movable blade 38a rotates or moves up and down with respect to the fixed blade 38b. In the vicinity of both ends of the guide plate 39, master transport roller pairs 39a and 39b which are rotationally driven by driving means (not shown) are provided.

On the right side of the second plate making section 6, a second printing section 7 is provided. The second printing unit 7 includes a plate cylinder 40 serving as a second plate cylinder, and an ink supply unit 4 provided inside the plate cylinder 40.
1 mainly.

A plate cylinder 40 having the same diameter as the plate cylinder 15 having a porous support cylindrical body and a mesh screen is rotatably supported by a support shaft 42 also serving as an ink supply pipe. It has a stage 43 and a clamper 44 for holding the master 34 in the non-opening portion. The clamper 44 is opened and closed by opening and closing means (not shown).

The ink supply means 41 includes a support shaft 42, an ink roller 45, a doctor roller 46, and an ink supply pipe 4.
7 mainly. An ink roller 45 whose outer peripheral surface is slightly separated from the inner peripheral surface of the plate cylinder 40 is rotatably supported by a side plate (not shown) supported by a support shaft 42, and is driven by a driving unit (not shown). Is rotated at a peripheral speed slightly lower than the peripheral speed of the plate cylinder 40 in the direction indicated by the arrow. Ink roller 4
Similarly to the ink roller 45, the doctor roller 46, which is arranged slightly apart from the outer peripheral surface of the roller 5, is rotatably supported by a side plate (not shown), and is driven in a direction opposite to the ink roller 45 by a driving means (not shown). It is driven to rotate. The ink supply pipe 47 is connected to the support shaft 42,
In the vicinity of the outer peripheral surface of the ink roller 45 and the outer peripheral surface of the doctor roller 46, the ink supplied from the support shaft 42 through the ink supply pipe 47 is used as a wedge-shaped ink reservoir 4.
8 is formed.

Similarly to the plate cylinder 15, the plate cylinder 40 is configured such that the outer peripheral surface thereof can be moved toward and away from the outer peripheral surface of the transfer cylinder 63 by a contact / separation mechanism shown by a two-dot chain line in FIG. .
The contact / separation mechanism includes a plate cylinder moving arm 56, an arm stopper 5
7, mainly comprising a cam 58 and the like.

A bent plate cylinder moving arm 56 having a hook-shaped one end 56a is attached to the support shaft 5 attached to the apparatus main body.
9, a bent portion 56b is swingably supported, and a support shaft 42 is attached to the other end. A rotatable cam follower 6 is provided at a position near one end 56a of the plate cylinder moving arm 56.
The other end of a tension spring 61 having one end attached to the apparatus main body is attached in the vicinity thereof.

At a position corresponding to the cam follower 60 in the apparatus main body, a cam 58 which is rotated in synchronization with the plate cylinder 40 by transmitting a driving force from a plate cylinder driving means 69 described later by a driving force transmitting means (not shown) is provided. Have been. When the cam follower 60 contacts the large-diameter portion of the cam 58, the outer peripheral surface of the plate cylinder 40 separates from the outer peripheral surface of the transfer cylinder 63, which will be described later, and the large-diameter portion of the cam follower 60 and the cam 58 When the contact with the transfer cylinder 63 is released,
Is configured to abut on the outer peripheral surface of.

Near the one end 56a, a hook-shaped free end 57 is provided.
A rotatable arm stopper 57 having a is provided. A plunger of a solenoid 62 attached to the apparatus main body is connected to the arm stopper 57,
Like the arm stopper 50, the arm stopper 57 is rotated by the operation of the solenoid 62 so that the free end 57a and the one end 56a can be freely disengaged.

A transfer section 8 is provided between the first printing section 3 and the second printing section 7. The transfer unit 8 mainly includes a transfer cylinder 63, a cleaning unit 64, and a plate cylinder driving unit 69.

A transfer cylinder 63 which is a cylindrical body supported by a support shaft 65 and has the same diameter as each of the plate cylinders 15 and 40 is provided on the outer peripheral surface thereof.
A recess 63a into which the stage 18 and the clamper 19 and the stage 43 and the clamper 44 can enter.
An elastic member 63b made of synthetic rubber such as nitrile rubber capable of transferring ink is attached to the outer peripheral surface excluding the concave portion 63a. The transfer cylinder 63 is rotationally driven in a direction indicated by an arrow in FIG. 1 at the same peripheral speed as each of the plate cylinders 15 and 40 by a plate cylinder driving unit 69 described later.

In the vicinity of the transfer cylinder 63, a cleaning means 64 mainly including a cleaning roller 66, a supply roller 67, a cleaner tray 68 and the like is provided. The cleaning means 64 includes a cleaner tray 68
The cleaner is pumped up by a rotatable supply roller 67 in which a part of the peripheral surface is immersed in a cleaner stored therein, and a rotatable cleaning roller 66 whose peripheral surface is brought into contact with the peripheral surface of the supply roller 67 is removed. Elastic member 63b
To remove the ink adhered to the surface of the elastic member 63b. The cleaning means 64 is provided so as to be movable up and down as a whole.
Is configured to be able to contact and separate from the elastic member 63b.

The plate cylinder driving means 69 is, as shown in FIG.
Transfer cylinder gear 70, plate cylinder gear 7 having the same shape as transfer cylinder gear 70
1, 72, idle gears 73, 74, 7 of the same shape, respectively
5, 76, drive motor 77, motor gear 78, connecting arms 79, 80, 81, 82, connecting links 83, 84.
It is mainly composed of

Transfer cylinder gear 70 and plate cylinder gears 71 and 72
Are formed smaller than the outer diameters of the transfer cylinder 63 and the plate cylinders 15 and 40, and are formed so as not to engage with each other when the plate cylinders 15 and 40 come into contact with the transfer cylinder 63. . Each of the gears 70, 71, 72 is fixed to the outside of a flange (not shown) attached to the side surface of each cylindrical body (transfer cylinder 63, plate cylinder 15, 40), and rotates together with each cylindrical body.

The transfer cylinder gear 70 is engaged with a motor gear 78 attached to an output shaft of a drive motor 77 attached to the apparatus main body. One end of the motor gear 78 is rotatably attached to the support shaft 65. Idling gears 74 and 75 rotatably supported by the other ends of the connecting arms 80 and 81 mesh with each other. Since the transfer cylinder 63 does not have a contact / separation mechanism provided on each of the plate cylinders 15 and 40, the transfer cylinder gear 70
And the motor gear 78 can always mesh with each other.

An idle gear 73 rotatably supported at the other end of a connecting arm 79 rotatably mounted at one end to the support shaft 17 meshes with the plate cylinder gear 71. The gear 74 is connected to the gear 74 by a connecting link 83. The plate gear 72 has an idle gear 7 rotatably supported at the other end of a connecting arm 82 rotatably mounted at one end to the support shaft 42.
6 are engaged, and the idle gear 76 is
5 and are connected by a connecting link 84.

With the above configuration, when the drive motor 77 operates and the motor gear 78 rotates in the direction of the arrow in FIG.
The transfer cylinder gear 70 rotates in the direction of the arrow, and the transfer cylinder 63 rotates. Further, this rotational force is transmitted to the plate cylinder gear 71 via the idle gears 74 and 73 to rotate the plate cylinder 15 in the direction of the arrow, and is also transmitted to the plate cylinder gear 72 via the idle gears 75 and 76. The plate cylinder 40 rotates in the direction of the arrow.
In FIG. 3, for convenience of explanation, the plate cylinder gear 71, the transfer cylinder gear 70, and the plate cylinder gear 72 are shown in series, but the arrangement of each gear is the plate cylinder 15, transfer cylinder 63, This is the same position as the arrangement of the plate cylinder 40.

The plate cylinder driving means 69 is provided with a top and bottom moving mechanism for shifting the relative phase between the plate cylinder 15 and the transfer cylinder 63 or between the plate cylinder 40 and the transfer cylinder 63. The up-down moving mechanism has a moving rod 125 having one end connected to the connecting arm 79, a rod moving means (not shown) for moving the moving rod 125 in the direction of arrow A1 or the direction of arrow B1, and one end connected to the connecting arm 82. Moving rod 12
6. Move the moving rod 126 in the direction of arrow A2 or in the direction of arrow B2.
It mainly comprises a rod moving means (not shown) for moving in the direction.

When the moving rod 125 is moved in the direction of the arrow A1 from the state shown in FIG. 3, the connecting arm 79 is rotated in the counterclockwise direction so that the idle gear 73 is moved on the plate cylinder gear 71 in the counterclockwise direction. And the idle gear 7
The idle gear 74 meshed with 3 rotates in the clockwise direction, and the transfer cylinder gear 70 meshed with the idle gear 74 rotates in the counterclockwise direction. As a result, the relative phases of the plate cylinder 15 and the transfer cylinder 63 are shifted. At this time,
With the rotation of the transfer cylinder gear 70, each idle gear 75, 7
6, the plate cylinder gear 72 also rotates clockwise by the same amount of rotation as the transfer cylinder gear 70, so that the plate cylinder 40 and the transfer cylinder 6
The relative phase of 3 does not change. Similarly, moving rod 1
By moving 26 in the direction of arrow A2 or arrow B2, the relative phases of plate cylinder 40 and transfer cylinder 63 can be shifted.

In the plate cylinder driving means 69 having such a vertical movement mechanism, the transfer cylinder gear 70 and each plate cylinder gear 7
1, 72, and each idle gear 73,
74, 75, and 76 have the same number of teeth, and the gears 70, 71, and 72 have the same number of teeth as the idle gears 73 and 7, respectively.
When the number of teeth is set to be an integral multiple of the number of teeth of 4, 75, 76, the combination of the gear and the idle gear and the meshing teeth of the idle gear are always the same, and the ratio of these teeth is 1: 2 or 1 : 3, the combination of teeth meshing every two or three rotations is the same,
The relative positional relationship between the plate cylinders 15 and 40 and the transfer cylinder 63 can be kept constant even if the meshing accuracy including the machining accuracy of the gears is somewhat poor.

On the left side of the first printing unit 3, a first plate discharging unit 103
Are arranged. The first plate discharging section 103 includes the upper plate discharging member 10.
5, lower plate discharging member 106, plate discharging box 107, compression plate 1
08 and the like.

The upper plate discharging member 105 is provided with the driving roller 10.
9, the driven roller 110 and the endless belt 111. When the drive roller 109 rotates clockwise in FIG. 1, the endless belt 111 moves in the direction of the arrow in the figure. The lower plate discharging member 106 also includes a driving roller 112, a driven roller 113, and an endless belt 114 similarly to the upper plate discharging member 105. The endless belt 114 is rotated by rotating the driving roller 112 counterclockwise in FIG. Move in the direction of the arrow. The lower plate discharging member 106 is movably provided by a moving means (not shown), and is selectively positioned at a position shown in FIG. 1 and a position where the outer peripheral surface of the drive roller 112 contacts the outer peripheral surface of the plate cylinder 15. You. A plate discharging box 107 for storing the printed master 9 peeled off from the outer peripheral surface of the plate cylinder 15 is detachably provided to an apparatus body (not shown). A compression plate 108 for pushing the printed master 9 into the plate discharge box 107 is vertically movably supported by an unillustrated elevating means.

Below the second plate making section 6, a second plate discharging section 104 is provided.
Are arranged. The second plate discharging unit 104 includes the first plate discharging unit 1.
03, upper plate discharging member 115, lower plate discharging member 116,
It mainly comprises a plate discharging box 117, a compression plate 118 and the like.

Upper plate discharging member 115 and lower plate discharging member 116
Is similar to the upper plate discharging member 105 and the lower plate discharging member 106,
Driving roller 119, driven roller 120, endless belt 121, and driving roller 122, driven roller 12
3. Each of the endless belts 124 is moved in a direction indicated by an arrow in FIG. The lower plate discharging member 116 is provided so as to be movable by a moving means (not shown).
Is selectively positioned at a position where the outer peripheral surface of the plate abuts on the outer peripheral surface of the plate cylinder 40. A plate discharging box 117 for storing the printed master 34 peeled off from the outer peripheral surface of the plate cylinder 40 is detachable from an apparatus body (not shown), and
8 is moved up and down by lifting means (not shown).

An operation panel 86 is provided on the upper front surface of an apparatus main body (not shown) of the stencil printing apparatus 1. The operation panel 86 is, as shown in FIG.
7, print start key 88, test print key 89, stop key 90, numeric keypad 91, clear key 92, enlargement / reduction key 93, print speed setting key 94, continuous shooting key 95, mode for double-sided printing and mode for single-sided printing Mode switching key 96 for switching the mode, mode display means 97 comprising an LED for displaying the mode switched by the mode switching key 96, and a display device 9 comprising a 7-segment LED.
8. In addition to a known configuration such as a display device 99 including an LCD,
When the operation starts after the stencil printing apparatus has been left for a long time, the post-leaving operation key 100 for performing the post-leaving operation and the elapsed time from the end of the previous printing operation until the stencil start key 87 is pressed are counted. And a timer 101 as a time measuring means.

Inside the apparatus main body (not shown) of the stencil printing apparatus 1, a control means 102 comprising a well-known microcomputer having a CPU, a ROM, a RAM and the like is provided. The control unit 102 receives an image data signal from an image reading unit (not shown) for reading a document image, a detection signal from the print paper detection sensor 24, a control signal from the operation panel 86, and a time signal from the timer 101.
The first stencil making unit 2, the first printing unit 3 having the solenoid 55, the paper feeding unit 4, the paper discharging unit 5, the second stencil making unit 6, the solenoid 6
2, a transfer unit 8 provided with a plate cylinder driving unit 69 having a drive motor 77, and a first plate discharging unit 10.
3. Control the second plate discharging unit 104. FIG. 5 shows a block diagram of the control means 102.

The operation of the stencil printing apparatus 1 during double-sided printing in the first embodiment of the present invention will be described below based on the above configuration. The operator sets two originals on an image reading unit (not shown), presses the mode switching key 96 to select the double-sided printing mode,
After confirming that both sides are lit, the plate-making start key 87 is pressed. At this time, the operation of the timer 101 that has been operating since the end of the previous printing operation is stopped, and the timer 1 is stopped.
01 outputs a time signal to the control means 102. Upon receiving the time signal, the control means 102 compares the time signal with a threshold value stored in the ROM. If the time signal exceeds the threshold value, the control means 102 regards the print after leaving as it is. Call. When the time signal is equal to or less than the threshold, the operation program at the time of normal printing is called. Even if the time signal is equal to or less than the threshold value, if the operation key 100 is pressed before the plate making start key 87 is pressed, the control means 102
Calls an operation program for printing after standing from the ROM.

First, the operation during normal printing will be described. When the plate-making start key 87 is pressed, the drive motor 77 operates to move the plate cylinders 15 and 40 and the transfer cylinder 63 as shown in FIG.
Rotate in the direction opposite to the arrow. Then, moving means (not shown) is operated to move the lower plate discharging members 106 and 116, respectively, and the printed masters 9 and 34 wound around the outer peripheral surfaces of the plate cylinders 15 and 40 respectively correspond to the corresponding upper plate discharging members 105. , 115, the printed masters 9, 34 are stored in the plate discharge boxes 107, 117, and then compressed by the compression plates 108, 118.
Thereafter, the plate cylinders 15 and 40 rotate to the plate feeding standby position and stop, and are opened and closed by a not-shown opening / closing means.
44 is released, and the plate discharging operation is completed.

A plate making operation is performed in the first plate making unit 2 in parallel with the reading operation of the first document by the image reading unit (not shown). When the plate discharging operation is completed, the platen roller 12 and the master transport roller pair 14a, 14b start rotating,
The master 9 is pulled out from the master roll 10. The master 9 pulled out is subjected to plate making when passing through the thermal head 11. The plurality of heating elements arranged on the surface of the thermal head 11 are selectively provided in accordance with digital image signals sent after various processes are performed on an A / D converter and other plate making boards (not shown). Fever, master 9
A hot-melt perforation plate is made of a mirror image on a thermoplastic resin film of the above.

According to the number of steps of a stepping motor (not shown) for driving the rotation of the platen roller 12, the leading end of the master 9 is moved to the stage 18 and the clamper 19.
When the control unit 102 determines that the control unit 102 has reached a predetermined position between the stage unit 18 and the opening / closing unit (not shown), the clamper 19 rotates, and the stage unit 18 and the clamper 19
Hold the leading end of the master 9.

Thereafter, the plate cylinder 15 rotates in the direction of the arrow in FIG. 1 at the same peripheral speed as the transfer speed of the master 9, and the operation of winding the master 9 around the plate cylinder 15 is performed. When the control unit 102 determines that plate making for one plate has been completed based on the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 12, the rotation of the platen roller 12 and the master transport roller pair 14a, 14b is stopped. At the same time, the movable blade 13a rotates and the master 9 is cut. The cut master 9 is pulled out by the rotation operation of the plate cylinder 15, and when the plate cylinder 15 reaches the home position again, the drive motor 77 is stopped by a command from the control means 102, and the plate cylinder 15 is positioned.

After reading the first document, an image reading unit (not shown) reads the second document, and in parallel with this, the second plate making unit 6 makes the same plate making operation as the first plate making unit 2. The operation is performed. After the plate discharging operation is completed, the platen roller 37 and the master transport roller pair 39a, 39b start rotating,
The master 34 is pulled out from the master roll 35. When the drawn-out master 34 passes through the thermal head 36, a normal image is made on a thermoplastic resin film.

According to the number of steps of a stepping motor (not shown) for driving the rotation of the platen roller 37, the leading end of the master 34 is moved to the stage 43 and the clamper 4.
When the control unit 102 determines that the control unit 102 has reached the predetermined position between the control unit 4 and the control unit 4, an operation signal is sent to the opening / closing unit (not shown), and the clamper 44 rotates to hold the leading end of the master 34.

Thereafter, the plate cylinder 40 rotates in the direction of the arrow in FIG. 1 at the same peripheral speed as the transport speed of the master 34, and the master 34 is wound around the plate cylinder 40. When the control unit 102 determines that plate making for one plate has been completed based on the number of steps of a stepping motor (not shown) that rotationally drives the platen roller 37, the rotation of the platen roller 37 and the master transport roller pair 39a, 39b is stopped. At the same time, the movable blade 38a rotates and the master 34 is cut.
The cut master 34 is pulled out by the rotation of the plate cylinder 40. When the plate cylinder 40 reaches the home position again, the drive motor 77 is stopped by a command from the control means 102, and the plate cylinder 40 is positioned.

When the plate feeding operation to each of the plate cylinders 15 and 40 is completed, an image transfer operation to the transfer cylinder 63 is performed. Plate cylinder 40
Is positioned at the home position, the control means 10
2, an operation command is sent to the drive motor 77, and the plate cylinders 15, 40 and the transfer cylinder 63 rotate again in the direction of the arrow in FIG.

At the time of this rotation, the leading end position of the plate-making image of the plate-making master 34 wound around the plate cylinder 40 is
When it reaches a position facing the outer peripheral surface of the control means 3, the control means 10
2, the solenoid 62 is energized to suck the plunger. Thereby, the arm stopper 57 is moved rightward in FIG. 1, and the engagement between the plate cylinder moving arm 56 and the arm stopper 57 is released.

At this time, the cam 58 has its small-diameter portion rotated to a position opposing the cam follower 60, and the plate cylinder moving arm 56 is supported by the support shaft 59 by the urging force of the tension spring 61.
Is pivoted clockwise in FIG. By the swinging movement of the plate cylinder moving arm 56, the outer peripheral surface of the plate cylinder 40 comes into pressure contact with the elastic member 63b of the transfer cylinder 63 via the master 34. In this state, the plate cylinder 40 and the transfer cylinder 63 rotate, The plate making image of the master 34 is transferred as a mirror image onto the member 63b.

During this image transfer operation, the plate cylinder 15 is
And the control unit 102 rotates in synchronization with the transfer cylinder 63.
No power is supplied to the solenoid 55 from the
Reference numeral 5 indicates a state in which the transfer cylinder 63 is separated from the transfer cylinder 63.

After the plate cylinder 40 has rotated substantially once and the plate making image of the master 34 has been completely transferred onto the elastic member 63b, when the large diameter portion of the cam 58 comes into contact with the cam follower 60, the control means 102 When the power to the solenoid 62 is cut off, the plate cylinder moving arm 56 and the arm stopper 57 are engaged again, and the outer peripheral surface of the plate cylinder 40 and the elastic member 6 of the transfer cylinder 63 are moved.
3b.

After the image transfer operation to the transfer cylinder 63 is completed, one print sheet S is fed from a paper feed cassette (not shown).
The tip is held in the registration roller pair 23.
Thereafter, the printing paper S is fed between the plate cylinder 15 and the transfer cylinder 63 by rotating the registration roller pair 23 at a predetermined timing.

When the leading edge of the printing paper S fed by the rotation of the registration roller pair 23 is detected by the printing paper detecting sensor 24, a signal is sent from the printing paper detecting sensor 24 to the control means 102, and the control means 102 Upon receiving this signal, the solenoid 55 is energized. The energized solenoid 55 sucks the plunger 55a, whereby the arm stopper 50 is moved rightward in FIG. 2, and the engagement between the plate cylinder moving arm 49 and the arm stopper 50 is released.

At this time, the cam 51 has its small-diameter portion rotated to a position opposing the cam follower 53, and the plate cylinder moving arm 49 moves the support shaft 52 by the urging force of the tension spring 54.
Is pivoted clockwise in FIG. By the swing of the plate cylinder moving arm 49, the outer peripheral surface of the plate cylinder 15 is pressed against the elastic member 63b of the transfer cylinder 63 via the master 9 and the printing paper S, and in this state, the plate cylinder 15 and the transfer cylinder 63 rotate. Thereby, the platemaking image of the master 9 is transferred as a normal image to one surface of the printing paper S, and the platemaking image of the master 34 transferred onto the elastic member 63b is transferred as a normal image to the other surface of the printing paper S. Transcribed.

After the plate cylinder 15 has rotated substantially once and all the plate-making images of the master 9 have been transferred to the printing paper S, when the large-diameter portion of the cam 51 comes into contact with the cam follower 53, the control means 102 When the power supply to 55 is cut off, the plate cylinder moving arm 49 and the arm stopper 50 are engaged again, and the outer peripheral surface of the plate cylinder 15 is separated from the elastic member 63b of the transfer cylinder 63.

Printing paper S on which print images are transferred on both sides
Is separated from the outer peripheral surface of the plate cylinder 15 by the separation claw 26, guided by the guide plate 27, sent to the sheet discharge conveyance unit 28, and then discharged onto the sheet discharge tray 29. Thereafter, the plate cylinders 15 and 40 and the transfer cylinder 63 rotate to the home position and stop, and the printing operation is completed.

After the printing operation is completed and the stencil printing apparatus 1 is in the printing standby state, when the operator presses the test printing key 89, one sheet is printed from a sheet cassette (not shown) similarly to the printing operation. The sheet S is fed, and the leading end is added to the registration roller pair 23, and
A command is sent from the control means 102 and the drive motor 77 starts rotating, and the plate cylinders 15 and 40 and the transfer cylinder 63 are driven to rotate at high speed.

The solenoid 62 is energized at the same timing as the printing operation, and the plate cylinder 40 is pressed against the transfer cylinder 63 to transfer an image onto the elastic member 63b. Thereafter, the registration roller pair 23 also feeds the printing paper S between the plate cylinder 15 and the transfer cylinder 63 that are rotating at a high speed at the same timing as in the printing operation. The fed print sheet S has a print image transferred to both sides thereof, is separated from the outer peripheral surface of the plate cylinder 15 by the separation claw 26, and is then conveyed by the sheet discharge conveyance means 28 and discharged onto the discharge tray 29. Is done. After the plate cylinders 15 and 40 are separated from the transfer cylinder 63 at the same timing as the plate setting operation, they are again positioned at the home position, 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 using various keys on the operation panel 86 or the above-mentioned vertical movement mechanism. After the test printing is performed again, the printing is performed with the ten keys 91. Display device 98
By pressing the print start key 88 after setting the print speed with the print speed setting key 94, the printing paper S is continuously fed, and each plate is kept energized to the solenoids 55 and 62. The printing operation is performed by rotating the cylinders 15 and 40 and the transfer cylinder 63 at high speed. When printing of the set number of sheets is completed, the timer 101 starts operating again.

At the time of this printing, the cleaning means 6
4 is for bringing the cleaning roller 66 into contact with the elastic member 63b every time the transfer cylinder 63 rotates a predetermined number of times.
Is further programmed to clean the surface of the transfer cylinder 63 after the last one of the number of printed sheets has been printed.

Next, a description will be given of the operation at the time of the after-leaving printing when the after-leaving operation key 100 is pressed or when the time signal output from the timer 101 to the control means 102 exceeds the threshold value. When the printing operation is performed after the leaving, the display device 99 displays the fact.

When the plate making start key 87 is pressed, the plate cylinders 15, 40 and the transfer cylinder 63 start rotating at a low speed, respectively, and the solenoids 55, 62 are energized, so that the plate cylinder 15, the transfer cylinder 63 and The plate cylinder 40 and the transfer cylinder 63 are pressed against each other.

By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinders and the mesh screens of the plate cylinders 15 and 40 was wound around the outer peripheral surfaces of the plate cylinders 15 and 40. The ink is absorbed by the printed masters 9 and 34 and removed from the plate cylinders 15 and 40, and fresh ink is supplied to the porous support cylinder and the mesh screen.

After the plate cylinders 15 and 40 and the transfer cylinder 63 have been rotated by the number of rotations stored in the control means 102 in advance,
Stop at home position. The power to the solenoids 55 and 62 is cut off before the plate cylinders 15 and 40 and the transfer cylinder 63 stop, so that the plate cylinders 15 and 40 are held at positions separated from the transfer cylinder 63.

After the above-described pressing operation is completed, a cleaning operation of the transfer cylinder 63 by the cleaning means 64 is performed. Thereafter, the plate discharging operation, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing, and the timer 101 starts operating again after the printing operation is completed.
FIG. 6 shows a flow of the duplex printing operation in the first embodiment.

Next, a stencil printing machine 1 for one-sided printing
Will be described. The operator sets one document on an image reading unit (not shown), presses the mode switching key 96 to select the one-sided printing mode,
After confirming that D is lit in "one side", the plate making start key 87 is pressed. At this time, a time signal is output from the timer 101 to the control means 102 as in the case of double-sided printing.

First, the operation during normal printing will be described. When the plate making start key 87 is pressed, the plate discharging operation is performed in the same manner as in the normal operation in double-sided printing.
5, 40 are stopped at the plate feeding standby position and the clampers 19, 4 are stopped.
4 is released.

In parallel with the operation of reading an original by an image reading unit (not shown), a plate making operation is performed in the second plate making unit 6. When the plate discharging operation is completed, the platen roller 37 and the master transport roller pairs 39a and 39b start rotating, and the master 34 is pulled out from the master roll 35. When the drawn-out master 34 passes through the thermal head 36, a mirror image is formed on the thermoplastic resin film.

According to the number of steps of a stepping motor (not shown) for driving the rotation of the platen roller 37, the leading end of the master 34 is moved to the stage 43 and the clamper 4
When the control means 102 determines that the control section 102 has reached the predetermined position between the stage section 43 and the clamp section 44, the clamper 44 rotates, and the stage section 43 and the clamper 4 are rotated.
4 hold the leading end of the master 34.

Thereafter, the plate cylinder 40 is rotated at the same peripheral speed as the transfer speed of the master 34 in the direction of the arrow in FIG. When the control means 102 determines that the operation is completed, the rotation of the platen roller 37 and the master transport roller pair 39a, 39b is stopped, and the movable blade 38a is rotated and the master 34 is cut. The cut master 34 is pulled out by the rotation operation of the plate cylinder 40. When the plate cylinder 40 reaches the home position again, the drive motor 77 is stopped by a command from the control means 102, and the plate cylinder 40 is positioned.

The plate making operation is also performed in the first plate making section 2 in parallel with the plate making operation described above, but the first plate making section 2 is controlled so that the thermal head 11 does not generate heat. Therefore, the unmade master 9 is wound on the outer peripheral surface of the plate cylinder 15.

When the plate feeding operation to each of the plate cylinders 15 and 40 is completed, an image transfer operation to the transfer cylinder 63 is performed. Plate cylinder 40
Is positioned at the home position, the control means 10
2, an operation command is sent to the drive motor 77, and the plate cylinders 15, 40 and the transfer cylinder 63 rotate again in the direction of the arrow in FIG.

At the time of this rotation, the leading end position of the plate-making image of the plate-making master 34 wound around the plate cylinder 40 is
When it reaches a position facing the outer peripheral surface of the control means 3, the control means 10
2, the solenoid 62 is energized, and the outer peripheral surface of the plate cylinder 40 is pressed against the elastic member 63b via the master 34, so that the plate making image of the master 34 is transferred as a mirror image onto the elastic member 63b.

During this image transfer operation, the plate cylinder 15 is
And the control unit 102 rotates in synchronization with the transfer cylinder 63.
No power is supplied to the solenoid 55 from the
Reference numeral 5 indicates a state in which the transfer cylinder 63 is separated from the transfer cylinder 63.

When the plate cylinder 40 is rotated substantially once, and the plate-making image of the master 34 is completely transferred onto the elastic member 63b, the power supply to the solenoid 62 is cut off and the outer peripheral surface of the plate cylinder 40 and the elastic member 63b are Are separated.

After the image transfer operation to the transfer cylinder 63 is completed, one sheet of printing paper S is fed from a paper feed cassette (not shown).
The tip is held in the registration roller pair 23.
Thereafter, the printing paper S is fed between the plate cylinder 15 and the transfer cylinder 63 by rotating the registration roller pair 23 at a predetermined timing.

When the leading edge of the printing paper S fed by the rotation of the registration roller pair 23 is detected by the printing paper detecting sensor 24, a signal is sent from the printing paper detecting sensor 24 to the control means 102, and the control means 102 Upon receiving this signal, the solenoid 55 is energized. The energized solenoid 55 sucks the plunger 55a, whereby the arm stopper 50 is moved rightward in FIG. 2, and the engagement between the plate cylinder moving arm 49 and the arm stopper 50 is released.

At this time, the cam 51 has its small-diameter portion rotated to a position facing the cam follower 53, and the plate cylinder moving arm 49 causes the support shaft 52 by the urging force of the tension spring 54.
Is pivoted clockwise in FIG. By the swing of the plate cylinder moving arm 49, the outer peripheral surface of the plate cylinder 15 is moved through the unprinted master 9 and the printing paper S through the elastic member 63 of the transfer cylinder 63.
b, the plate cylinder 15 and the transfer cylinder 63 rotate in this state, so that the plate-making image of the master 34 transferred onto the elastic member 63b is transferred as a normal image to the other surface of the printing paper S. .

After the plate cylinder 15 has been rotated substantially once and all the plate-making images of the master 34 have been transferred to the printing paper S, when the large diameter portion of the cam 51 comes into contact with the cam follower 53, the control means 102 sends the solenoid to the solenoid. When the power supply to 55 is cut off, the plate cylinder moving arm 49 and the arm stopper 50 are engaged again, and the outer peripheral surface of the plate cylinder 15 is separated from the elastic member 63b of the transfer cylinder 63.

The printing paper S, on which the print image has been transferred on one side, is guided by the guide plate 27 and sent to the paper discharging conveyance means 28, and then discharged onto the paper discharging tray 29. Thereafter, the plate cylinders 15 and 40 and the transfer cylinder 63 rotate to the home position and stop, and the printing operation is completed.

After the stencil printing operation is completed and the stencil printing machine 1 is in the printing standby state, when the test printing key 89 is pressed by the operator, one sheet is printed from a sheet cassette (not shown) as in the stencil printing operation. The sheet S is fed, and the leading end is added to the registration roller pair 23, and
When a command is sent from the control means 102, the drive motor 77 starts rotating, and the plate cylinders 15, 40 and the transfer cylinder 63 are driven to rotate at high speed.

The solenoid 62 is energized at the same timing as the printing operation, and the plate cylinder 40 is pressed against the transfer cylinder 63 to transfer an image onto the elastic member 63b. Thereafter, the registration roller pair 23 also feeds the printing paper S between the plate cylinder 15 and the transfer cylinder 63 that are rotating at a high speed at the same timing as in the printing operation. After the printed image is transferred to one side of the fed printing paper S, the printing paper S is conveyed by the paper discharge conveyance means 28 and discharged onto the paper discharge tray 29. After the plate cylinders 15 and 40 are separated from the transfer cylinder 63 at the same timing as the plate setting operation, they are again positioned at the home position, and the test printing operation is completed.

The density and position of the printed image are confirmed by this test printing, and these are adjusted by using various keys on the operation panel 86 or the above-described vertical movement mechanism. After the test printing is performed again, printing is performed using the numeric keypad 91. Display device 98
By pressing the print start key 88 after setting the print speed with the print speed setting key 94, the printing paper S is continuously fed, and each plate is kept energized to the solenoids 55 and 62. The printing operation is performed by rotating the cylinders 15 and 40 and the transfer cylinder 63 at high speed. When printing of the set number of sheets is completed, the timer 101 starts operating again.

At the time of this printing, the cleaning means 6
In No. 4, the cleaning roller 66 is brought into contact with the elastic member 63b every time the transfer cylinder 63 rotates a predetermined number of times, to clean the surface of the transfer cylinder 63, and the last one of the number of printed sheets is printed. It is programmed to clean the surface of the transfer cylinder 63 later.

Next, the operation at the time of printing after standing will be described. When the plate making start key 87 is pressed, each plate cylinder 15,
The cylinder 40 and the transfer cylinder 63 start rotating at a low speed, respectively, and the solenoid 62 is energized, so that the plate cylinder 40 and the transfer cylinder 63 are pressed against each other.

By this pressure contact, the ink whose viscosity has been reduced by standing on the porous support cylinder of the plate cylinder 40 and the mesh screen is left on the printed master 34 wound around the outer peripheral surface of the plate cylinder 40. While being absorbed and removed from the plate cylinder 40, fresh ink is supplied to the porous support cylinder and the mesh screen.

The plate cylinder 40 and the transfer cylinder 63 are
After rotating by the number of rotations stored in advance in 2, the motor stops at the home position. When the power to the solenoid 62 is cut off before the plate cylinder 40 and the transfer cylinder 63 stop, the plate cylinder 40 is held at a position separated from the transfer cylinder 63. In addition, the plate cylinder 15 moves the transfer cylinder 63 during the above operation.
And is kept apart.

After the above pressing operation is completed, a cleaning operation of the transfer cylinder 63 by the cleaning means 64 is performed. Thereafter, the plate discharging operation, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing, and the timer 101 starts operating again after the printing operation is completed.

In the above-described example, the case where only the plate cylinder 40 is used at the time of single-sided printing is shown. However, the configuration may be such that only the plate cylinder 15 is used at the time of single-sided printing. In this case, the plate discharging operation, the plate making operation, and the plate feeding operation are not performed on the plate cylinder 40, the plate cylinder 40 is kept in a state in which the printed master 34 is wound around the outer peripheral surface, and the solenoid 62 is also Not activated. Therefore, the plate cylinder 40 rotates only in a state of being separated from the transfer cylinder 63 with the rotation of the plate cylinder 15 and the transfer cylinder 63, and does not participate in the printing operation. In the printing operation after leaving, the solenoid 55 is energized prior to the plate discharging operation, and the plate cylinder 15 and the transfer cylinder 63 are pressed against each other. Then, the plate discharging operation, the plate making operation, and the plate feeding operation on the plate cylinder 15 are performed. After that, the printing operation and the printing operation are sequentially performed.

Next, a second embodiment of the present invention will be described.
The second embodiment is different from the first embodiment only in that a control unit 133 is used instead of the control unit 102. Control means 133 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Is provided in place of the control means 102 in an apparatus main body (not shown) of the stencil printing apparatus 1, and receives signals from an image reading unit (not shown), the print paper detection sensor 24, the operation panel 86, and the timer 101, Stored in
The first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, the paper discharging unit 5, the second stencil making unit 6, the second printing unit 7, the transfer unit 8, the first plate discharging unit 103, and the second plate discharging unit 104 are controlled.

The operation of the stencil printing apparatus 1 during double-sided printing in the second embodiment will be described below. Since the operation at the time of normal printing in the second embodiment is the same as that of the first embodiment, only the operation at the time of printing after standing will be described.

When the master making start key 87 is pressed, the first
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment, and the plate cylinders 15 and 40 rotate to the plate feeding standby position and stop, and are opened and closed by unillustrated opening / closing means.
Is released, and the plate discharging operation is completed.

After the completion of the plate discharging operation, the first plate making section 2 performs a master transport operation. When the plate discharging operation is completed, the platen roller 12 and the pair of master transport rollers 14a and 14b start rotating, and the master 9 is pulled out from the master roll 10. The pulled-out master 9 passes through the thermal head 11, but at this time, the thermal head 11 does not generate heat, and the master 9 is conveyed by the platen roller 12 in a non-plate-making state.

Then, the tip of the master 9 is
When a predetermined position between the clamper 19 and the clamper 19 is reached, an operation signal is sent to the opening / closing means (not shown),
Is rotated, and the master 9 includes the stage section 18 and the clamper 1.
9 and sandwiched.

Thereafter, the plate cylinder 15 is rotated in the direction of the arrow in FIG.
3 is operated, and the master 9 is wound around the plate cylinder 15. The plate cylinder 15 around which the unmade master 9 is wound stops at the home position.

After the completion of the plate discharging operation, the same master transport operation is performed in the second plate making section 6 in parallel with the master transport operation in the first plate making section 2. The master 34 pulled out from the master roll 35 by the platen roller 37 and the master transport roller pairs 39a, 39b is cut by cutting means 38 after the leading end of the master 34 is sandwiched between the stage 43 and the clamper 44 without making a plate. It is wound on the outer peripheral surface of the plate cylinder 40. The plate cylinder 40 on which the unmade master 34 is wound also stops at the home position.

After each of the plate cylinders 15 and 40 has stopped at the home position, each of the plate cylinders 15 and 40 and the transfer cylinder 63 starts rotating at a low speed, and the solenoids 55 and 62 are energized. And the transfer cylinder 63 and the plate cylinder 40 and the transfer cylinder 63 are pressed against each other.

By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinders and the mesh screens of the plate cylinders 15, 40 was wound around the outer peripheral surfaces of the plate cylinders 15, 40. The ink is absorbed by the unprinted masters 9 and 34 and removed from the plate cylinders 15 and 40, and fresh ink is supplied to the porous support cylinder and the mesh screen.

After the plate cylinders 15 and 40 and the transfer cylinder 63 have been rotated by the number of rotations stored in the control means 102 in advance,
Stop at home position. The power to the solenoids 55 and 62 is cut off before the plate cylinders 15 and 40 and the transfer cylinder 63 stop, so that the plate cylinders 15 and 40 are held at positions separated from the transfer cylinder 63.

After the pressing operation is completed, the plate discharging operation, the plate making operation, the plate feeding operation, the plate setting operation, and the printing operation are sequentially performed in the same manner as in the first embodiment, and the timer 101 is operated again after the printing operation is completed. To start. FIG. 7 shows a flow of the duplex printing operation in the second embodiment.

Next, the operation of the stencil printing apparatus 1 during single-sided printing in the second embodiment of the present invention will be described. The operation at the time of normal printing at the time of single-sided printing is the same as that of the first embodiment. Therefore, only the operation at the time of printing after standing will be described.

When the master making start key 87 is pressed, the first
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment, and the plate cylinders 15 and 40 rotate to the plate feeding standby position and stop, and are opened and closed by unillustrated opening / closing means.
Is released, and the plate discharging operation is completed.

After the completion of the plate discharging operation, the first plate making section 2 and the second plate making section 6 perform the master transport operation in the same manner as in double-sided printing. The masters 9 and 34 conveyed in an unmade state are wound on the outer peripheral surfaces of the corresponding plate cylinders 15 and 40, respectively.
The plate cylinders 15 and 40 around which unmastered masters 9 and 34 are wound,
Each stops at the home position.

After each of the plate cylinders 15 and 40 has stopped at the home position, each of the plate cylinders 15 and 40 and the transfer cylinder 63 starts rotating at a low speed, and the solenoid 62 is energized. 63 comes into pressure contact.

By this pressure contact, the ink whose viscosity has been reduced by standing on the porous support cylinder of the plate cylinder 40 and the mesh screen is left on the unmade master 34 wound around the outer peripheral surface of the plate cylinder 40. While being absorbed and removed from the plate cylinder 40, fresh ink is supplied to the porous support cylinder and the mesh screen.

The plate cylinder 40 and the transfer cylinder 63 are
After rotating by the number of rotations stored in advance in 2, the motor stops at the home position. When the power to the solenoid 62 is cut off before the plate cylinder 40 and the transfer cylinder 63 stop, the plate cylinder 40 is held at a position separated from the transfer cylinder 63. In addition, the plate cylinder 15 moves the transfer cylinder 63 during the above operation.
And is kept apart.

Thereafter, the plate discharging operation, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing, and after the printing operation is completed, the timer 101 starts operating again.

In the above-described example, the case where only the plate cylinder 40 is used at the time of single-sided printing is shown. However, the configuration may be such that only the plate cylinder 15 is used at the time of single-sided printing. In this case, the plate discharging operation, the plate making operation, and the plate feeding operation are not performed on the plate cylinder 40, the plate cylinder 40 is kept in a state in which the printed master 34 is wound around the outer peripheral surface, and the solenoid 62 is also Not activated. Therefore, the plate cylinder 40 rotates only in a state of being separated from the transfer cylinder 63 with the rotation of the plate cylinder 15 and the transfer cylinder 63, and does not participate in the printing operation. In the printing operation after leaving, the solenoid 55 is energized prior to the plate discharging operation, and the plate cylinder 15 and the transfer cylinder 63 are pressed against each other. Then, the plate discharging operation, the plate making operation, and the plate feeding operation on the plate cylinder 15 are performed. After that, the printing operation and the printing operation are sequentially performed.

FIG. 8 is a schematic side view of a stencil printer 127 used in the third and fourth embodiments of the present invention. Compared to the stencil printing apparatus 1, the stencil printing apparatus 127 has a transfer unit 128 instead of the transfer unit 8, and uses a control unit 134 storing an operation program of the stencil printing device 127 instead of the control unit 102. And the other configuration is the same.

The transfer section 128 includes the cleaning means 64,
It mainly comprises a plate cylinder driving means 69, a transfer cylinder 129, a plurality of pressing rollers 130 and the like.

The transfer cylinder 129, which is a cylindrical body supported by the support shaft 65 and has the same diameter as the transfer cylinder 63, has the stage portion 18 and the clamper 19, and the stage portion 43 and the clamper 44 inserted on the outer peripheral surface thereof. The outer peripheral surface excluding the concave portion has an elastic member 6.
An elastic member 129b similar to 3b is attached. Further, the concave portion 129a is provided with rotatable gripping claws 131 and 132 as a winding means for winding a sheet-like member such as a printing sheet or a master on the elastic member 129b.

A plurality of rotatable pressing rollers 130 are provided in the vicinity of the outer peripheral surface of the transfer cylinder 129, and the outer peripheral surface thereof is supported by an unillustrated contacting / separating means so as to be able to freely contact / separate from the elastic member 129b. . The pressing roller 130 is
When the transfer cylinder 129 rotates in a state of being pressed against the elastic member 129b, the transfer cylinder 129 is driven to rotate.

The control means 134, which is a well-known microcomputer having a CPU, a ROM, a RAM, and the like, is provided inside an apparatus main body (not shown) of the stencil printing apparatus 127.
4, upon receiving signals from the operation panel 86 and the timer 101, based on the operation program of the stencil printing apparatus 127 stored in the ROM, the first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, the paper ejection The unit 5, the second plate making unit 6, the second printing unit 7, the transfer unit 128, the first plate discharging unit 103, and the second plate discharging unit 104 are controlled. FIG. 9 shows a block diagram of the control means 134.

The operation of the stencil printing machine 127 during double-sided printing according to the third embodiment of the present invention will be described below. Although the operation during normal printing in the third embodiment uses the transfer unit 128 instead of the transfer unit 8, the operation is basically the same as that of the first embodiment, so that the details are omitted.
Only the operation at the time of printing after standing will be described. During normal printing, each pressing roller 130, each gripping claw 1
31 and 132 do not perform the contact / separation operation and the rotation operation, and do not participate in a series of operations.

When the plate making start key 87 is pressed, each of the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the gripping claws 131 are moved to the sheet feeding standby position near the guide plate 25. When 129 arrives, each plate cylinder 1
5, 40 and the rotation of the transfer cylinder 129 are stopped. After the transfer cylinder 129 stops, the gripping claws 131 are opened and one sheet of printing paper S is fed from the paper supply unit 4, and the leading end of the printing paper S is inserted between the transfer cylinder 129 and the gripping claws 131. (See FIG. 10A).

When the leading end of the printing paper S is inserted, the gripper 131 rotates and the printing paper S is placed on the outer peripheral surface of the transfer cylinder 129.
And a command is sent from the control means 134, and the transfer cylinder 129 starts rotating in the direction of the arrow in FIG. Then, when the gripping claws 131 pass through the nip portion with the plate cylinder 15, a command is sent from the control means 134 and each solenoid 5
5 and 62, and the plate cylinders 15 and 40 are transferred to the transfer cylinder 1 respectively.
29, and each pressing roller 130 is pressed against the transfer cylinder 129 (see FIG. 10B).

By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinders and the mesh screens of the plate cylinders 15, 40 was wound around the outer peripheral surfaces of the plate cylinders 15, 40. The printed masters 9, 34 and the printing paper S wound on the outer peripheral surface of the transfer cylinder 129 are absorbed by the plate cylinders 15, 40, and are removed from the plate cylinders 15, 40. New ink is supplied. Further, the printing paper S wound around the transfer cylinder 129 is prevented from peeling and wrinkling by the pressing rollers 130, 130.

The plate cylinders 15 and 40 and the transfer cylinder 129
And the pressing rollers 130, 130 are rotated by the number of rotations previously stored in the control means 134,
Transfer cylinder 12 to a position where it passes through a nip portion with the plate cylinder 15.
9 rotates, the gripping claws 131 are released, and the transfer cylinder 129 is rotated.
The upper printing paper S is guided by the guide plate 27, sent to the paper discharge conveyance means 28, and discharged onto the paper discharge tray 29 (see FIG. 10C).

At the same time as the gripping claws 131 are released, the energization of the solenoids 55 and 62 is stopped, so that the plate cylinders 15 and 40 are held at positions separated from the transfer cylinder 129. The plate cylinders 15, 40 and the transfer cylinder 129 rotate to the home position and stop, and immediately before that, the pressing rollers 130, 130 are separated from the transfer cylinder 129.

After the pressing operation is completed, the plate discharging operation, the plate making operation, the plate feeding operation, the plate setting operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the first embodiment. 101 starts to operate again. FIG. 11 shows a flow of the duplex printing operation in the third embodiment.

Next, the operation of the stencil printing machine 127 during single-sided printing in the third embodiment of the present invention will be described. The operation at the time of normal printing at the time of single-sided printing is almost the same as that of the first embodiment.

When the plate making start key 87 is pressed, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed.
As in the case of double-sided printing, the operation of winding the printing paper S around the transfer cylinder 129 is performed, and the solenoid 62 is energized to press the plate cylinder 40 against the transfer cylinder 129.

By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinder of the plate cylinder 40 and the mesh screen is printed, and the printed master 34 wrapped around the outer peripheral surface of the plate cylinder 40, Then, the ink is absorbed by the printing paper S wound around the outer peripheral surface of the transfer cylinder 129 and is removed from the plate cylinder 40, and new ink is supplied to the porous support cylinder and the mesh screen.

After the plate cylinder 40, the transfer cylinder 129, and the pressing rollers 130, 130 have been rotated by the number of rotations stored in the control means 134 in advance, the gripping claws 131 are released, and the printing paper S on the transfer cylinder 129 is released. Is guided to a guide plate 27, sent to a paper discharge conveyance means 28, and discharged onto a paper discharge tray 29.

At the same time as the gripping claws 131 are released, the energization of the solenoid 62 is cut off, so that the plate cylinder 40 is held at a position separated from the transfer cylinder 129. Each plate cylinder 1
5, 40 and the transfer cylinder 129 rotate to the home position and stop.
Are separated from the transfer cylinder 129. It should be noted that the plate cylinder 15 keeps a state separated from the transfer cylinder 129 during the above operation.

After the pressing operation is completed, the plate discharging operation, the plate making operation, the plate supplying operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the first embodiment. 101 starts to operate again. At the time of this one-sided printing, a configuration using only the plate cylinder 15 may be adopted.

Next, a fourth embodiment of the present invention will be described.
The fourth embodiment differs from the third embodiment only in that a control means 135 is used instead of the control means 134. Control means 135 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Is provided in place of the control means 134 in an apparatus main body (not shown) of the stencil printing apparatus 127, and includes an image reading unit (not shown), the print sheet detection sensor 24, the operation panel 86,
Each signal from the timer 101 is received, and based on an operation program of the stencil printing apparatus 127 different from the control means 134 and stored in the ROM, the first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, The control unit controls the sheet discharging unit 5, the second plate making unit 6, the second printing unit 7, the transfer unit 8, the first plate discharging unit 103, and the second plate discharging unit 104.

The operation of the stencil printing machine 127 during double-sided printing according to the fourth embodiment of the present invention will be described below. Since the operation at the time of normal printing in the fourth embodiment is the same as that of the third embodiment, only the operation at the time of printing after standing will be described.

When the master making start key 87 is pressed, the third
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment, and after the plate discharging operation is completed, each of the plate cylinders 15 and 40 and the transfer cylinder 12
9 starts rotating at a low speed, the printing paper S is wound around the transfer cylinder 129 in the same manner as in the third embodiment, and the respective solenoids 55 and 62 are energized so that the plate cylinders 15 and
40 presses against the transfer cylinder 129.

Due to this pressure contact, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinders of the plate cylinders 15 and 40 and the mesh screen is left on the printing paper S wound around the outer peripheral surface of the transfer cylinder 129. Is absorbed by each plate cylinder 15,
At 40, fresh ink is supplied to the porous support cylinder and the mesh screen.

Then, the plate cylinders 15 and 40 and the transfer cylinder 129 are used.
And the pressing rollers 130, 130 are rotated by the number of rotations stored in the control means 135 in advance, and then the gripping claws 131 are rotated.
Is released and the printing paper S on the transfer cylinder 129 is
And is sent to the paper discharge conveyance means 28 and discharged onto the paper discharge tray 29.

At the same time that the gripping claws 131 are released, the energization of the solenoids 55 and 62 is stopped, so that the plate cylinders 15 and 40 are held at positions separated from the transfer cylinder 129. The plate cylinders 15, 40 and the transfer cylinder 129 rotate to the home position and stop, and immediately before that, the pressing rollers 130, 130 are separated from the transfer cylinder 129.

After the pressing operation described above is completed, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the third embodiment, and the timer 101 is restarted after the printing operation is completed. Start operation. FIG. 12 shows a flow of the duplex printing operation in the fourth embodiment.

Next, the operation of the stencil printing machine 127 during single-sided printing in the fourth embodiment of the present invention will be described. Since the operation during the normal operation during the one-sided printing is the same as that in the third embodiment, only the operation during the printing after the idle state will be described.

When the master making start key 87 is pressed, the third
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment, and after the plate discharging operation is completed, each of the plate cylinders 15 and 40 and the transfer cylinder 12
9 starts rotating at a low speed, the printing paper S is wound around the transfer cylinder 129 in the same manner as in the third embodiment, and the solenoid 62 is energized so that the plate cylinder 40 is moved to the transfer cylinder 12.
Press against 9.

Due to this pressure contact, the ink whose viscosity has decreased due to being left on the porous support cylinder of the plate cylinder 40 and the mesh screen is absorbed by the printing paper S wound around the outer peripheral surface of the transfer cylinder 129. The ink is removed from the plate cylinder 40 and fresh ink is supplied to the porous support cylinder and the mesh screen.

After the plate cylinder 40, the transfer cylinder 129, and the pressing rollers 130, 130 have been rotated by the number of rotations stored in the control means 135 in advance, the gripping claws 131 are released and the printing paper S on the transfer cylinder 129 is released. Is guided to a guide plate 27, sent to a paper discharge conveyance means 28, and discharged onto a paper discharge tray 29.

At the same time that the gripping claws 131 are released, the energization of the solenoid 62 is cut off, so that the plate cylinder 40 is held at a position separated from the transfer cylinder 129. Each plate cylinder 1
5, 40 and the transfer cylinder 129 rotate to the home position and stop.
Are separated from the transfer cylinder 129. It should be noted that the plate cylinder 15 keeps a state separated from the transfer cylinder 129 during the above operation.

Thereafter, in the same manner as in the normal printing in the third embodiment, the plate making operation, the plate feeding operation, the printing operation, and the printing operation are sequentially performed, and after the printing operation is completed, the timer 101 starts operating again. At the time of this one-sided printing, a configuration using only the plate cylinder 15 may be adopted.

FIG. 13 is a schematic side view of a stencil printing apparatus 136 used in the fifth and sixth embodiments of the present invention.
Compared to the stencil printing apparatus 127, the stencil printing apparatus 136 has a second stencil making section 137 instead of the second stencil making section 6, a second stencil making section 138 instead of the second stencil making section 104, The only difference is that a transfer unit 139 is provided in place of the unit 128, and a control unit 140 storing an operation program of the stencil printing apparatus 136 is used in place of the control unit 134, and the other configuration is the same.

The second plate making section 137 has the same structure as the second plate making section 6 except that the position of the second plate making section 137 moves to the upper right of the plate cylinder 40 and the arrangement of the thermal head 36 and the platen roller 37 is reversed. . Although not shown in FIG. 13, a mechanism for moving the plate cylinder 40 in and out is provided in the same manner as in the other embodiments.

The second plate discharging portion 138 is disposed at a position below the contact position between the plate cylinder 40 and the transfer cylinder 129, and is provided near the contact portion between the upper plate discharging member 115 and the lower plate discharging member 116 with a guide plate. Except for having 141, it has the same configuration as the second plate discharging section 104.

The transfer section 139 includes a plurality of pressing rollers 13
The transfer unit 128 has the same configuration as that of the transfer unit 128 except that the transfer unit 128 does not have 0 and has an ink absorbing member supply unit 142.

The ink absorbing member supply means 142 includes a sheet roll 144 formed by winding a sheet-shaped ink absorbing member 143 into a roll, a plurality of pairs of transport rollers 145, 146, 147 driven to rotate by a stepping motor, and an ink. It mainly comprises cutting means 148 for cutting the absorbing member 143, guide plates 149 and 150, a blower fan 151, an ink absorbing member pressing roller 152, and the like.

The ink absorbing member 143, which is a roll paper,
The sheet roll 144 is made of Washi fiber having good ink absorbency or a mixture of Washi fiber and synthetic fiber. The sheet roll 144 has a core 144a rotatably supported by a support member (not shown). The cutting means 148 comprising the movable blade 148a and the fixed blade 148b is such that the movable blade 148a is
It rotates or moves up and down with respect to 48b. The rotatable ink absorbing member pressing roller 152 is oscillated by oscillating means (not shown), and the outer peripheral surface thereof is provided so as to be able to freely contact and separate from the outer peripheral surface of the transfer cylinder 129.

The control means 140, which is a known microcomputer having a CPU, a ROM, a RAM, and the like, is provided inside an apparatus main body (not shown) of the stencil printing apparatus 136, and includes an image reading section (not shown),
4, upon receiving signals from the operation panel 86 and the timer 101, based on the operation program of the stencil printing apparatus 136 stored in the ROM, the first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, the paper ejection The control unit 5 controls the second plate making unit 137, the second printing unit 7, the transfer unit 139, the first plate discharging unit 103, and the second plate discharging unit 138. FIG. 14 shows a block diagram of the control means 140.

Hereinafter, the operation of the stencil printing apparatus 136 during double-sided printing in the fifth embodiment of the present invention will be described. Since the operation at the time of normal printing in the fifth embodiment is the same as that of the third embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 87 is pressed, each of the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the gripping claws 131 are moved to the plate feeding standby position near the guide plate 150. When 129 arrives, each plate cylinder 1
5, 40 and the rotation of the transfer cylinder 129 are stopped. After the transfer cylinder 129 is stopped, the gripping claws 131 are released, and the transport roller pairs 145, 146, and 147 are rotated, and the ink absorbing member 143 is fed from the sheet roll 144. The fed ink absorbing member 143 is connected to the transfer cylinder 12.
9 is inserted between the gripper 9 and the gripper 131 (FIG. 1).
5 (a)).

From the number of steps of the stepping motor for rotating and driving the conveying roller pairs 145, 146, and 147,
The tip of the ink absorbing member 143 is the transfer cylinder 129 and the gripper 1
When it is determined that the ink absorbing member 14 has been inserted between the transfer cylinder 129 and the ink absorbing member 14
3 and a command is sent from the control means 140, and the transfer cylinder 129 starts rotating in the direction of the arrow in FIG. 13 at the same speed as the transport speed of the ink absorbing member 143 (FIG. 15).
(B)).

When the ink absorbing member 143 is transported for a predetermined length, the cutting means 148 operates to operate the ink absorbing member 143.
Is disconnected. The cut ink absorbing member 143 is pulled out by the rotation of the transfer cylinder 129. Then, the transfer cylinder 12 is moved to a position where the gripper 132 corresponds to the guide plate 150.
9, the rotation of each of the plate cylinders 15, 40 and the transfer cylinder 129 is temporarily stopped, the gripping claws 132 are opened, the ink absorbing member pressing roller 152 contacts the transfer cylinder 129, and the blower fan 151 blows air. I do. As a result, the rear end of the ink absorbing member 143 is stuck to the surface of the transfer cylinder 129 between the transfer cylinder 129 and the gripping claw 132 (see FIG. 15C).
Is closed.

The plate cylinders 15 and 40 and the transfer cylinder 129 start rotating again and stop at the home position. During the operation of winding the ink absorbing member 143 around the transfer cylinder 129, the power to the solenoids 55 and 62 is cut off, and
5, 40 rotate at a position separated from the transfer cylinder 129.
The solenoid 62 is energized after the transfer cylinder 129 rotates until the gripping claw 131 passes the contact position between the plate cylinder 40 and the transfer cylinder 129, and the plate cylinder 40 is pressed against the transfer cylinder 129 via the ink absorbing member 143. May be.

After the completion of the winding operation, a command is sent from the control means 140, and the plate cylinders 15, 40 and the transfer cylinder 129 start rotating at a low speed, and the solenoids 55, 62, respectively.
To the plate cylinder 15, the transfer cylinder 129 and the plate cylinder 4.
0 and the transfer cylinder 129 are pressed against each other.

By this pressure contact, the ink whose viscosity was lowered by being left on the porous support cylinders and the mesh screens of the plate cylinders 15, 40 was wound around the outer peripheral surfaces of the plate cylinders 15, 40. Printed masters 9 and 34 and ink absorbing member 14 wound on the outer peripheral surface of transfer cylinder 129
3 and is removed from the plate cylinders 15 and 40, and fresh ink is supplied to the porous support cylinder and the mesh screen.

The plate cylinders 15 and 40 and the transfer cylinder 129 rotate at the number of rotations stored in the control means 140 in advance, and then stop at the home position. Each plate cylinder 15, 40
And before the transfer cylinder 129 stops, each solenoid 55, 6
The plate cylinders 15 and 40 are held at positions separated from the transfer cylinder 129 by cutting off the current supply to 2.

After the above pressing operation is completed, the transfer cylinder 12
9 is performed.
When the plate cylinders 15, 40 and the transfer cylinder 129 start rotating at a low speed, and the transfer cylinder 129 reaches the peeling standby position where the gripping claws 131 are located near the guide plate 141, the plate cylinders 15, 40,
The rotation of the transfer cylinder 129 and the transfer cylinder 129 is stopped. Transfer cylinder 12
After the stop of Step 9, the gripping claws 131 are released, and the upper and lower plate discharging members 115 and 116 operate. Gripping claw 13
With the opening of 1, the leading end of the ink absorbing member 143 held on the transfer cylinder 129 comes into contact with the guide plate 141 by its own waist (see FIG. 16A).

Thereafter, the transfer cylinder 129 starts to rotate again in the direction of the arrow in FIG. 13, and this rotation causes the guide plate 141 to rotate.
The top end of the upper ink absorbing member 143 is held between the upper plate discharging member 115 and the lower plate discharging member 116. The ink absorbing member 143 having the leading end held therebetween transfers the transfer cylinder 129 by rotation of the transfer cylinder 129 and operation of each of the plate discharging members 115 and 116.
(See FIG. 16 (b)).

When the transfer cylinder 129 rotates until the gripper 132 is positioned near the guide plate 141, the gripper 132 is released. Ink absorbing member 143 separated from transfer cylinder 129 by plate discharging members 115 and 116
After being discarded in the plate discharge box 117, the compression plate 11
8 compressed.

The ink absorbing member 143 from above the transfer cylinder 129
Is removed, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating again and stop at the home position. During the peeling operation of the ink absorbing member 143 from the transfer cylinder 129, the power supply to the solenoids 55 and 62 is cut off.
Each of the plate cylinders 15 and 40 rotates at a position separated from the transfer cylinder 129.

After the peeling operation is completed, the plate discharging operation, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed as in the case of the normal printing in the third embodiment, and the timer 101 is operated again after the printing operation is completed. To start. FIG. 17 shows a flow of the duplex printing operation in the fifth embodiment.

Next, the operation of the stencil printing apparatus 136 at the time of single-sided printing in the fifth embodiment of the present invention will be described. The operation at the time of normal printing at the time of single-sided printing is the same as that of the third embodiment. Therefore, only the operation at the time of printing after standing will be described.

When the plate making start key 87 is pressed, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed.
The ink absorbing member 1 to the transfer cylinder 129 as in the case of duplex printing.
43 winding operation is performed. And each plate cylinder 15, 40
Then, the transfer cylinder 129 starts to rotate again, and the solenoid 62 is energized to press the plate cylinder 40 against the transfer cylinder 129.

By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinder and the mesh screen of the plate cylinder 40 is printed, and the printed master 34 wound around the outer peripheral surface of the plate cylinder 40, The ink is absorbed by the ink absorbing member 143 wound on the outer peripheral surface of the transfer cylinder 129 and is removed from the plate cylinder 40, and new ink is supplied to the porous support cylinder and the mesh screen.

Then, after the plate cylinder 40 and the transfer cylinder 129 have been rotated by the number of rotations stored in the control means 140 in advance,
The gripping claws 131 are released, and the ink absorbing member 143 on the transfer cylinder 129 is guided by the guide plate 141 so that each transport member 1 is moved.
After being sent to the plate discharge box 117, it is compressed by the compression plate 118.

At the same time that the gripping claws 131 are released, the energization of the solenoid 62 is cut off, so that the plate cylinder 40 is held at a position separated from the transfer cylinder 129. Each plate cylinder 1
5, 40 and the transfer cylinder 129 rotate to the home position and stop. It should be noted that the plate cylinder 15 keeps a state separated from the transfer cylinder 129 during the above operation.

After the pressing operation is completed, the plate discharging operation, the plate making operation, the plate feeding operation, the plate setting operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the third embodiment. 101 starts to operate again. At the time of this one-sided printing, a configuration using only the plate cylinder 15 may be adopted.

Next, a sixth embodiment of the present invention will be described.
The sixth embodiment differs from the fifth embodiment only in that a control unit 153 is used instead of the control unit 140. A control unit 153 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Is provided in place of the control means 140 inside an apparatus main body (not shown) of the stencil printing apparatus 136, and includes an image reading unit (not shown), the print paper detection sensor 24, the operation panel 86,
Each signal from the timer 101 is received, and based on an operation program of the stencil printing apparatus 136 different from the control means 140 and stored in the ROM, the first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, Paper discharging unit 5, second plate making unit 137, second printing unit 7, transfer unit 139, first plate discharging unit 103, second plate discharging unit 1
38 is performed.

The operation of the stencil printing apparatus 136 during double-sided printing according to the sixth embodiment of the present invention will be described below. Since the operation at the time of normal printing in the sixth embodiment is the same as that of the third embodiment, only the operation at the time of leaving printing will be described.

When the master making start key 87 is pressed, the third
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment. Thereafter, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the operation of winding the ink absorbing member 143 around the transfer cylinder 129 is performed as in the fifth embodiment. , 62 are energized and each plate cylinder 15, 4 is energized.
0 presses against the transfer cylinder 129.

Due to this pressure contact, the ink whose viscosity has been reduced by being left attached to the porous support cylinders and the mesh screen of the plate cylinders 15 and 40 and having been reduced in viscosity is transferred to the ink absorbing member wound around the outer peripheral surface of the transfer cylinder 129. The ink is absorbed by the plate cylinder 143 and removed from the plate cylinders 15 and 40, and fresh ink is supplied to the porous support cylinder and the mesh screen.

Then, the plate cylinders 15 and 40 and the transfer cylinder 129
Are rotated by the number of rotations stored in advance in the control means 153, and then the plate cylinders 15, 40 and the transfer cylinder 129 are stopped at the home position. Each plate cylinder 15, 40 and transfer cylinder 12
When the power to the solenoids 55 and 62 is cut off before the stop of the cylinder 9, the cylinders 15 and 40 are held at positions separated from the transfer cylinder 129.

Thereafter, the transfer cylinder 12 is moved in the same manner as in the fifth embodiment.
After the ink absorbing member 143 is separated from the transfer cylinder 9, the plate cylinders 15, 40 and the transfer cylinder 129 rotate to the home position and stop.

After the peeling operation is completed, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the third embodiment.
Starts working again. FIG. 18 shows a flow of the duplex printing operation in the sixth embodiment.

Next, the operation of the stencil printing apparatus 136 during single-sided printing in the sixth embodiment of the present invention will be described. Since the operation during the normal operation during the one-sided printing is the same as that in the third embodiment, only the operation during the printing after the idle state will be described.

When the master making start key 87 is pressed, the third
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment. Thereafter, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the operation of winding the ink absorbing member 143 around the transfer cylinder 129 is performed in the same manner as in the third embodiment. Is supplied, and the plate cylinder 40 is moved to the transfer cylinder 129.
Press against

By this pressure contact, the ink whose viscosity has been reduced by standing on the porous support cylinder and the mesh screen of the plate cylinder 40 is absorbed by the ink absorbing member 143 wound around the outer peripheral surface of the transfer cylinder 129. Then, the ink is removed from the plate cylinder 40 and fresh ink is supplied to the porous support cylinder and the mesh screen.

After the plate cylinder 40 and the transfer cylinder 129 have been rotated by the number of rotations stored in the control means 135 in advance,
The plate cylinders 15, 40 and the transfer cylinder 129 stop at the home position. The power to the solenoid 62 is cut off before the plate cylinders 15 and 40 and the transfer cylinder 129 stop, so that the plate cylinder 40 is held at a position separated from the transfer cylinder 129. Note that the plate cylinder 15 holds the transfer cylinder 1 during the above operation.
29 is maintained.

Thereafter, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed as in the case of the normal printing in the third embodiment, and the timer 101 starts operating again after the printing operation is completed. At the time of this one-sided printing, a configuration using only the plate cylinder 15 may be adopted.

FIG. 19 is a schematic side view of a stencil printing apparatus 154 used in the seventh and eighth embodiments of the present invention.
Compared to the stencil printing apparatus 136, the stencil printing apparatus 154 includes a second stencil making section 155 instead of the second stencil making section 137, a transfer section 156 instead of the transfer section 139, and a control The only difference is that a control unit 157 storing an operation program of the stencil printing apparatus 154 is used, and other configurations are the same.

The second plate making section 155 is different from the second plate making section 137 in that the movable guide plate 158, the master transport rollers 159 and 160, the master guide plate 161, the blower fan 1
62, only the point that a master pressing roller 163 is provided, and the point that a guide plate 164 is used instead of the guide plate 39, and other configurations are the same.

The movable guide plate 158 whose base end is swingably supported has a free end separated from the end of the guide plate 164 by a solid line, and a free end connected to the end of the guide plate 164. To the position indicated by the two-dot chain line. The master transport roller 159 is disposed with its outer peripheral surface in contact with the base end of the movable guide plate 158, and is rotationally driven by a driving unit (not shown). The master guide plate 161 is disposed such that one end is located near the base end of the movable guide plate 158 and the other end is located near the outer peripheral surface of the transfer cylinder 129. The master transport roller 160 is disposed with its outer peripheral surface in contact with the other end of the master guide plate 161 and is driven to rotate by driving means (not shown). The blower fan 162 is disposed above the master transport roller 160 and blows air near the other end of the master guide plate 161. The rotatable master pressing roller 163 is oscillated by oscillating means (not shown), and its outer peripheral surface is transferred to the transfer cylinder 129.
Is provided so as to be able to freely contact and separate from the outer peripheral surface of the.

Near the upstream end of the guide plate 164 in the master transport direction, a rotatable master transport roller pair 164 is disposed.
The master transport roller 164 b is disposed at the downstream end of the guide plate 164 in the master transport direction, with its peripheral surface abutting the guide plate 164.

The transfer section 156 is different from the transfer section 139 only in that the transfer section 156 does not have the ink absorbing member supply means 142, and the other configuration is the same.

The control means 157, which is a well-known microcomputer having a CPU, a ROM, a RAM, and the like, is provided inside an apparatus main body (not shown) of the stencil printing apparatus 154, and includes an image reading section (not shown) and a print paper detecting sensor 2 (not shown).
4, receiving signals from the operation panel 86 and the timer 101, and based on the operation program of the stencil printing device 154 stored in the ROM, the first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, the paper discharging The unit 5, the second plate making unit 155, the second printing unit 7, the transfer unit 156, the first plate discharging unit 103, and the second plate discharging unit 138 are controlled. FIG. 20 shows a block diagram of the control means 157.

The operation of the stencil printing apparatus 154 during double-sided printing according to the seventh embodiment of the present invention will be described below. Since the operation at the time of normal printing in the seventh embodiment is the same as that of the third embodiment, only the operation at the time of printing after standing will be described.

When the plate making start key 87 is pressed, each of the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the gripping claws 131 are moved to the plate feeding standby position near the guide plate 161. When 129 arrives, each plate cylinder 1
5, 40 and the rotation of the transfer cylinder 129 are stopped. After the transfer cylinder 129 stops, the gripping claws 131 are released, the platen roller 37, the pair of master transport rollers 164a, and the master transport rollers 164b, 159, and 160 rotate, and the master 34 is fed out of the master roll 35.
The master 34 fed out is not subjected to plate making by the thermal head 36, and the master 34 is in a state of no plate making, and
9 is inserted between the gripper 9 and the gripping claw 131 (FIG. 2).
1 (a)).

According to the number of steps of the stepping motor for rotatingly driving the platen roller 37, the master plate master 34 is not used.
Is determined to be inserted between the transfer cylinder 129 and the gripping claw 131, the gripping claw 131 rotates to transfer the transfer cylinder 129.
19, a command is sent from the control means 157, and the transfer cylinder 129 starts rotating in the direction of the arrow in FIG. 19 at the same speed as the transport speed of the unmade master 34. FIG. 21 (b)).

When the unplated master 34 is transported for a predetermined length, the cutting means 38 is operated to cut the unplated master 34. The cut blank master 34 is pulled out by the rotation of the transfer cylinder 129. When the transfer cylinder 129 rotates to a position where the gripping claw 132 corresponds to the guide plate 161, the rotation of each of the plate cylinders 15, 40 and the transfer cylinder 129 is temporarily stopped, the gripping claw 132 is opened, and the master pressing roller 163 is released. Comes into contact with the transfer cylinder 129, and the blower fan 162 blows air. As a result, the blank master 34
Is attached to the surface of the transfer cylinder 129 between the transfer cylinder 129 and the gripping claw 132, and then the gripping claw 132 is closed (see FIG. 21C).

[0214] By the above-described series of operations, the unprinted master 34 has its thermoplastic resin film surface fixed to the elastic member 129.
b, and is wound on the transfer cylinder 129 in a direction in which the surface of the porous support is opposed to the plate cylinders 15 and 40.

The plate cylinders 15 and 40 and the transfer cylinder 129 start rotating again and stop at the home position. During the operation of winding the unmade master 34 on the transfer cylinder 129, the power to the solenoids 55 and 62 is cut off, and the plate cylinders 15 and
40 rotates at a position separated from the transfer cylinder 129. The solenoid 62 is energized after the transfer cylinder 129 rotates until the gripping claw 131 passes the contact position between the plate cylinder 40 and the transfer cylinder 129, and the plate cylinder 40 is pressed against the transfer cylinder 129 via the unmade master 34. May be.

After the completion of the winding operation, a command is sent from the control means 157 to cause each of the plate cylinders 15, 40 and the transfer cylinder 129 to start rotating at a low speed, and each of the solenoids 55, 62.
To the plate cylinder 15, the transfer cylinder 129 and the plate cylinder 4.
0 and the transfer cylinder 129 are pressed against each other.

[0217] By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinders and the mesh screens of the plate cylinders 15 and 40 was wound around the outer peripheral surfaces of the plate cylinders 15 and 40. The printed masters 9, 34 and the unsupported master 34 wound on the outer peripheral surface of the transfer cylinder 129 are absorbed by the porous support of the master 34 and removed from the plate cylinders 15, 40, and are also porous support cylinders. Fresh ink is supplied to the body and the mesh screen.

The plate cylinders 15 and 40 and the transfer cylinder 129 rotate at the number of rotations stored in the control means 157 before stopping at the home position. Each plate cylinder 15, 40
And before the transfer cylinder 129 stops, each solenoid 55, 6
The plate cylinders 15 and 40 are held at positions separated from the transfer cylinder 129 by cutting off the current supply to 2.

After the above pressing operation is completed, the transfer cylinder 12
9 is performed. Each of the plate cylinders 15, 40 and the transfer cylinder 129 start rotating at a low speed,
When the transfer cylinder 129 reaches the plate discharging standby position where the gripping claws 131 are located near the guide plate 141, each of the plate cylinders 15, 40
Then, the rotation of the transfer cylinder 129 is stopped. After the transfer cylinder 129 stops, the gripping claws 131 are opened and the upper plate discharging member 1 is released.
15 and the lower plate discharging member 116 operate. With the release of the gripping claws 131, the leading end of the blank master 34 held on the transfer cylinder 129 abuts on the guide plate 141 by its own waist (see FIG. 22A).

Thereafter, the transfer cylinder 129 starts to rotate again in the direction of the arrow in FIG. 19, and this rotation causes the guide plate 141 to rotate.
The leading end of the upper unplated master 34 is held between the upper plate discharging member 115 and the lower plate discharging member 116. The unmade master 34 with the leading end held therebetween is separated from the outer peripheral surface of the transfer cylinder 129 by the rotation of the transfer cylinder 129 and the operation of each of the plate discharging members 115 and 116 (see FIG. 22B).

When the transfer cylinder 129 rotates until the gripper 132 is positioned near the guide plate 141, the gripper 132 is released. The unprinted master 34 separated from the transfer cylinder 129 by the respective plate discharging members 115 and 116 is
After being discarded in the plate discharging box 117, it is compressed by the compression plate 118.

After the blank master 34 has been peeled off from the transfer cylinder 129, the plate cylinders 15, 40 and the transfer cylinder 129 start rotating again and stop at the home position. During the peeling operation of the unmade master 34 from the transfer cylinder 129, the power supply to the solenoids 55 and 62 is cut off.
5, 40 rotate at a position separated from the transfer cylinder 129.

After the peeling operation is completed, the plate discharging operation, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the third embodiment, and the timer 101 is operated again after the printing operation is completed. To start. FIG. 23 shows a flow of the duplex printing operation in the seventh embodiment.

Next, the operation of the stencil printing apparatus 154 during single-sided printing in the seventh embodiment of the present invention will be described. The operation at the time of normal printing at the time of single-sided printing is the same as that of the third embodiment. Therefore, only the operation at the time of printing after standing will be described.

When the plate making start key 87 is pressed, the plate cylinders 15, 40 and the transfer cylinder 129 start rotating at a low speed.
As in the case of double-sided printing, the unprinted master 34 to the transfer cylinder 129 is used.
Is performed. Then, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating again, and the solenoid 62 is energized to press the plate cylinder 40 against the transfer cylinder 129.

By this pressing, the ink whose viscosity has been reduced by leaving it attached to the porous support cylinder of the plate cylinder 40 and the mesh screen is left unprinted, and the printed master 34 wound around the outer peripheral surface of the plate cylinder 40, The ink is absorbed by the porous support of the unmade master 34 wound on the outer peripheral surface of the transfer cylinder 129 and removed from the plate cylinder 40, and new ink is supplied to the porous support cylinder and the mesh screen. You.

After the plate cylinder 40 and the transfer cylinder 129 have been rotated by the number of rotations stored in the control means 157 in advance,
The gripping claws 131 are released, and the blank master 34 on the transfer cylinder 129 is guided by the guide plate 141 so that
After being sent to the plate discharge box 117, it is compressed by the compression plate 118.

At the same time as the gripping claws 131 are released, the energization of the solenoid 62 is cut off, so that the plate cylinder 40 is held at a position separated from the transfer cylinder 129. Each plate cylinder 1
5, 40 and the transfer cylinder 129 rotate to the home position and stop. It should be noted that the plate cylinder 15 keeps a state separated from the transfer cylinder 129 during the above operation.

After the pressing operation is completed, the plate discharging operation, the plate making operation, the plate feeding operation, the plate setting operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the third embodiment. 101 starts to operate again. At the time of this one-sided printing, a configuration using only the plate cylinder 15 may be adopted.

Next, an eighth embodiment of the present invention will be described.
The eighth embodiment is different from the seventh embodiment only in that a control unit 165 is used instead of the control unit 157. A control unit 165 which is a known microcomputer having a CPU, a ROM, a RAM, and the like.
Is provided in place of the control means 157 inside an apparatus main body (not shown) of the stencil printing apparatus 154, and includes an image reading unit (not shown), a print paper detection sensor 24, an operation panel 86,
Each signal from the timer 101 is received, and based on an operation program of the stencil printing apparatus 154 different from the control means 157 and stored in the ROM, the first stencil making unit 2, the first printing unit 3, the paper feeding unit 4, Paper discharge unit 5, second plate making unit 155, second printing unit 7, transfer unit 156, first plate discharge unit 103, second plate discharge unit 1
38 is performed.

Hereinafter, the operation of the stencil printing apparatus 154 during double-sided printing in the eighth embodiment of the present invention will be described. Since the operation at the time of normal printing in the eighth embodiment is the same as that of the third embodiment, only the operation at the time of leaving printing will be described.

When the master making start key 87 is pressed, the third
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment. Thereafter, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the winding operation of the unmade master 34 on the transfer cylinder 129 is performed in the same manner as in the seventh embodiment. , 62 are energized, and the plate cylinders 15, 40 are pressed against the transfer cylinder 129.

By this pressing, the ink whose viscosity has been reduced by being left on the porous support cylinders and the mesh screens of the plate cylinders 15 and 40 and whose viscosity has been reduced by standing is transferred to the unprinted plate master wound around the outer peripheral surface of the transfer cylinder 129. The ink is absorbed by the porous support 34 and removed from the plate cylinders 15 and 40, and the porous support cylinder and the mesh screen are supplied with new ink.

The plate cylinders 15 and 40 and the transfer cylinder 129
Are rotated by the number of rotations stored in the control means 165 in advance, and then the plate cylinders 15, 40 and the transfer cylinder 129 stop at the home position. Each plate cylinder 15, 40 and transfer cylinder 12
When the power to the solenoids 55 and 62 is cut off before the stop of the cylinder 9, the cylinders 15 and 40 are held at positions separated from the transfer cylinder 129.

Thereafter, the transfer cylinder 12 is moved in the same manner as in the seventh embodiment.
After the separation operation of the unmade master 34 from 9 is performed, the plate cylinders 15 and 40 and the transfer cylinder 129 rotate to the home position and stop.

After the peeling operation is completed, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed in the same manner as in the normal printing in the third embodiment.
Starts working again. FIG. 24 shows the flow of the double-sided printing operation in the eighth embodiment.

Next, the operation of the stencil printing apparatus 154 during single-sided printing in the eighth embodiment of the present invention will be described. Since the operation during the normal operation during the one-sided printing is the same as that in the third embodiment, only the operation during the printing after the idle state will be described.

When the master making start key 87 is pressed, the third
The plate discharging operation is performed in the same manner as in the normal printing in the embodiment. Thereafter, the plate cylinders 15 and 40 and the transfer cylinder 129 start rotating at a low speed, and the winding operation of the unmade master 34 on the transfer cylinder 129 is performed as in the seventh embodiment. , The plate cylinder 40 is pressed against the transfer cylinder 129.

Due to this pressure contact, the ink whose viscosity has been reduced by standing on the porous support cylinder of the plate cylinder 40 and the mesh screen is left on the porous plate of the unmade master 34 wound around the outer peripheral surface of the transfer cylinder 129. While being absorbed by the porous support and being removed from the plate cylinder 40, fresh ink is supplied to the porous support cylinder and the mesh screen.

Then, after the plate cylinder 40 and the transfer cylinder 129 have been rotated by the number of rotations stored in the control means 165 in advance,
The plate cylinders 15, 40 and the transfer cylinder 129 stop at the home position. The power to the solenoid 62 is cut off before the plate cylinders 15 and 40 and the transfer cylinder 129 stop, so that the plate cylinder 40 is held at a position separated from the transfer cylinder 129. Note that the plate cylinder 15 holds the transfer cylinder 1 during the above operation.
29 is maintained.

Thereafter, in the same manner as in the normal printing in the third embodiment, the plate making operation, the plate feeding operation, the plate attaching operation, and the printing operation are sequentially performed, and after the printing operation is completed, the timer 101 starts operating again. At the time of this one-sided printing, a configuration using only the plate cylinder 15 may be adopted.

As a modified example of the first and second embodiments, the transfer cylinder 129 is used in place of the transfer cylinder 63, and after the plate feeding operation of a new plate-making master during printing after standing is completed, the third
Similarly to the embodiment, after the printing paper S is wound on the transfer cylinder 129, each of the plate cylinders 15 and 40 is pressed against the transfer cylinder 129, and an operation program for rotating by a predetermined number of rotations is executed by the control means 102, 133 may be added.
In this way, the ink for obtaining a good printed image is sufficiently supplied to the porous support of the new plate-making master, so that a good printed matter can be more reliably obtained from the first sheet.

As a modified example of the third to eighth embodiments, similarly to the modified examples of the first and second embodiments, after completing the plate feeding operation of a new plate-making master at the time of printing after standing, the third modified example is performed. Similarly to the embodiment, after the printing paper S is wound on the transfer cylinder 129, each of the plate cylinders 15 and 40 is pressed against the transfer cylinder 129, and an operation program for rotating by a predetermined number of rotations is executed by the control means 134, 135,140,153,1
57 and 165 may be added. Thereby, the same effect as described above can be obtained.

In the first to eighth embodiments, the number of rotations at the time of pressing the plate cylinders 15 and 40 and the transfer cylinder 63 or the transfer cylinder 129 which are pressed before the printing operation is stored in the ROM of each control means in advance. Although it was the predetermined number of rotations,
A configuration in which the number of rotations is changed according to the length of the idle time based on the time signal from the timer 101 may be employed. 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
Shown in

[0245]

[Table 1]

Furthermore, even if the standing time is almost the same, the drying method of the ink or the ink viscosity becomes different due to the difference in the environmental temperature and / or the environmental humidity. Therefore, as another modified example of each embodiment, in addition to the above-described configuration, a temperature sensor and / or a humidity sensor are provided inside each of the plate cylinders 15 and 40, and the length of the idle time based on the time signal is reduced. Each of the plate cylinders 15, 40 at the time of press-contact changed according to
Alternatively, a configuration may be adopted in which the number of rotations of the transfer cylinder 63 or the transfer cylinder 129 is corrected. Also in this case, the correction value is determined by experiment. Table 2 shows an example of the correction value according to the environmental temperature.
Next, Table 3 shows an example of a correction value according to the environmental humidity, and FIG. 25 shows a block diagram of a control unit adopting this configuration, using the control unit 102 used in the first embodiment.

[0247]

[Table 2]

[0248]

[Table 3]

By adopting the above 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 leaving time or environmental conditions. And good printed matter can be obtained.

[0250]

According to the first aspect of the present invention, when printing is performed from a state in which the printed master is wound around the first and second plate cylinders, the plate cylinder used for printing is used. Since the transfer cylinder and the transfer cylinder are pressed against each other via the printed master and rotated by a predetermined number of times, ink whose viscosity has been reduced by leaving it attached to the plate cylinder is absorbed by the porous support of the printed master. As a result, the printing cylinder is filled with new ink and the printing cylinder is filled with new ink to prevent the occurrence of bleeding or set-off, thereby minimizing the generation of waste paper, thereby reducing printing costs.

According to the second aspect of the present invention, when printing is performed from a state where the printed master is wound on each of the first and second plate cylinders, the ink absorbing member is wound on the transfer cylinder. Thereafter, since the plate cylinder and the transfer cylinder used for printing are pressed against each other via the printed master and the ink absorbing member and rotated by a predetermined number of times,
The ink whose viscosity has been reduced by leaving it attached to the plate cylinder is removed from the plate cylinder by being absorbed by the porous support of the printed master and the ink absorbing member,
The printing cylinder can be filled with new ink to prevent the occurrence of bleeding or set-off and to minimize the occurrence of waste paper, thereby reducing printing costs. Further, at the time of pressing, the ink oozing out from the thermoplastic resin film perforated portion of the printed master is absorbed by the ink absorbing member, so that the ink does not adhere to the surface of the transfer cylinder, so that there is no load on the cleaning means. In addition, it is possible to reduce the number of complicated replacement work of the cleaner and reduce the consumption of the cleaner.

According to the third aspect of the present invention, when printing is performed from a state where the printed master is wound around the first and second plate cylinders, the printing is performed from the plate cylinder used for printing. After the finished master is peeled off and the ink absorbing member is wound around the transfer cylinder, the plate cylinder and the transfer cylinder are pressed against each other via the ink absorbing member and rotated a predetermined number of times. The ink whose viscosity has been reduced due to the adhesion and leaving is removed from the plate cylinder by peeling off the printed master and absorbing by the ink absorbing member, and the plate cylinder is filled with new ink, thereby causing bleeding or set-off. The printing cost can be effectively reduced by preventing the occurrence of waste paper and preventing the occurrence of waste paper.

According to the fourth aspect of the present invention, when printing is performed from a state in which the printed master is wound around the first and second plate cylinders, the printing paper is wound around the transfer cylinder. Since the plate cylinder used for printing and the transfer cylinder are pressed against each other via the printed master and the printing paper and rotated by a predetermined number of times, the ink whose viscosity has been reduced by being left on the plate cylinder is reduced. Is absorbed by the porous support of the printed master and the printing paper and is removed from the plate cylinder, and the plate cylinder is filled with new ink to prevent bleeding and set-off, and By minimizing the occurrence of printing, printing costs can be reduced without using new consumables.

According to the fifth aspect of the present invention, when printing is performed from a state where the printed master is wound around the first and second plate cylinders, the printing is performed from the plate cylinder used for printing. After the printed master is peeled off and the printing paper is wound around the transfer cylinder, the printing cylinder and the transfer cylinder are pressed against each other via the printing paper and rotated a predetermined number of times, so that the printing cylinder adheres to the printing cylinder. The ink whose viscosity has been reduced by leaving is removed from the plate cylinder by peeling of the printed master and absorption by the printing paper, and the plate cylinder is filled with new ink to prevent bleeding and set-off. By further suppressing the generation of waste paper, the printing cost can be effectively reduced without using new consumables.

According to the sixth aspect of the present invention, when printing is performed from a state in which the printed master is wound around the first and second plate cylinders, the support is used for printing on the transfer cylinder. After winding the unprinted master in the direction facing the plate cylinder to be performed, the plate cylinder and the transfer cylinder are pressed against each other via the printed master and the unprinted master, and each is rotated a predetermined number of times. The ink whose viscosity has been reduced by leaving it attached to the plate cylinder is absorbed by the porous support of the printed master and the support of the unmade master and is removed from the plate cylinder, and the ink is removed from the plate cylinder. The printing cost can be reduced without using new consumables by being filled with new ink, preventing the occurrence of bleeding or set-off, and suppressing the occurrence of waste paper as much as possible.

According to the seventh aspect of the present invention, when printing is performed from a state where the printed master is wound around the first and second plate cylinders, the printing is performed from the plate cylinder used for printing. After the pre-master is peeled off and the unsupported master is wound around the transfer cylinder in the direction in which the support faces the plate cylinder, the plate cylinder and the transfer cylinder are pressed against each other via the unprepared master, and Because it is rotated a predetermined number of times, the ink whose viscosity has been reduced by leaving it attached to the plate cylinder,
The printed master is removed from the plate cylinder by the separation of the printed master and the absorption by the support of the unmade master, and the plate cylinder is filled with new ink to prevent bleeding and set-off, thereby generating waste paper. , The printing cost can be effectively reduced without using new consumables.

According to the eighth aspect of the present invention, when printing is performed from a state where the printed master is wound around the first and second plate cylinders, the printing is performed from the plate cylinder used for printing. After the finished master is peeled off and the unmade master is wound around the plate cylinder, the plate cylinder and the transfer cylinder are pressed against each other via the unmade master and are rotated a predetermined number of times, so that the plate cylinder is transferred to the plate cylinder. The ink whose viscosity has been reduced due to the adhesion being left is removed from the plate cylinder by peeling of the printed master and absorption by the unprinted master, and the plate cylinder is filled with new ink, causing bleeding and set-off. By preventing the occurrence of waste paper, the printing cost can be effectively reduced without using new consumables.

According to the ninth and tenth aspects of the present invention, when printing is performed by winding a new plate-making master around a plate cylinder used for printing, printing paper is wound around the transfer cylinder. Thereafter, the plate cylinder and the transfer cylinder are pressed against each other via the master and the printing paper and rotated by a predetermined number of times, so that a good printed image is formed on the porous support of the new master. The obtained ink is sufficiently supplied, and a good printed matter can be obtained more reliably from the first sheet.

According to the eleventh aspect of the present invention, the number of rotations at the time of press contact between the plate cylinder and the transfer cylinder used for printing is controlled in accordance with the length of the elapsed time, so that the number of rotations can be changed with the change of the idle time. The number of rotations can be controlled to an optimum value in accordance with the state of the plate cylinder surface that changes during printing, and a good printed matter can be obtained from the first sheet while minimizing the rise time during printing after standing.

According to the twelfth aspect of the present invention, the number of rotations at the time of press contact between the plate cylinder and the transfer cylinder used for printing is controlled based on the length of the elapsed time and the detected temperature, thereby allowing the printing cylinder to stand. The number of rotations can be controlled to an optimum value in accordance with the state of the plate cylinder surface that changes with changes in time and environmental temperature. You can get printed matter.

According to the thirteenth aspect of the present invention, the number of rotations at the time of press contact between the plate cylinder and the transfer cylinder used for printing is determined by the length of the elapsed time and the detected humidity or the detected temperature and humidity. Based on the control, the number of rotations can be controlled to an optimum value according to the state of the plate cylinder surface that changes with the change of the leaving time, the environmental temperature, and the environmental humidity, and the rising time at the time of printing after leaving , And a good printed matter can be obtained from the first sheet.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a stencil printing apparatus used in first and second embodiments of the present invention.

FIG. 2 is a view for explaining a plate cylinder contacting / separating mechanism used in first and second embodiments of the present invention.

FIG. 3 is a view showing a plate cylinder driving means which also serves as a vertical movement means used in the first and second embodiments of the present invention.

FIG. 4 is a diagram showing an operation panel used in the first to eighth embodiments of the present invention.

FIG. 5 is a block diagram of control means used in the first and second embodiments of the present invention.

FIG. 6 is a flowchart illustrating an operation during double-sided printing after leaving in the first embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation during double-sided printing after leaving in the second embodiment of the present invention.

FIG. 8 is a schematic side view of a stencil printing machine used in the third and fourth embodiments of the present invention.

FIG. 9 is a block diagram of control means used in the third and fourth embodiments of the present invention.

FIG. 10 is a diagram illustrating the operation of winding the printing paper around the transfer cylinder and the operation of separating the printing paper from the transfer cylinder in the third and fourth embodiments of the present invention.

FIG. 11 is a flowchart showing an operation during double-sided printing after leaving in the third embodiment of the present invention.

FIG. 12 is a flowchart showing an operation during double-sided printing after leaving in the fourth embodiment of the present invention.

FIG. 13 is a schematic side view of a stencil printing machine used in fifth and sixth embodiments of the present invention.

FIG. 14 is a block diagram of control means used in the fifth and sixth embodiments of the present invention.

FIG. 15 is a diagram illustrating the operation of winding the ink absorbing member around the transfer cylinder in the fifth and sixth embodiments of the present invention.

FIG. 16 is a schematic diagram illustrating a peeling operation of the ink absorbing member from the transfer cylinder in the fifth and sixth embodiments of the present invention.

FIG. 17 is a flowchart showing an operation during double-sided printing after leaving in the fifth embodiment of the present invention.

FIG. 18 is a flowchart showing an operation during double-sided printing after leaving in the sixth embodiment of the present invention.

FIG. 19 is a schematic side view of a stencil printing apparatus used in the seventh and eighth embodiments of the present invention.

FIG. 20 is a block diagram of control means used in the seventh and eighth embodiments of the present invention.

FIG. 21 is a diagram for explaining an operation of winding a blank master onto a transfer cylinder in the seventh and eighth embodiments of the present invention.

FIG. 22 is a schematic diagram illustrating a peeling operation of a blank master from a transfer cylinder in the seventh and eighth embodiments of the present invention.

FIG. 23 is a flowchart showing an operation during double-sided printing after leaving in the seventh embodiment of the present invention.

FIG. 24 is a flowchart showing an operation during double-sided printing after leaving in the eighth embodiment of the present invention.

FIG. 25 is a block diagram of control means used in a modification of the first embodiment of the present invention.

[Explanation of symbols]

 1,127,136,154 Stencil printer 9,34 Master 15 First plate cylinder 40 Second plate cylinder 63,129 Transfer cylinder 101 Clocking means (Timer) 131,132 Winding means (Gripping claw) 142 Ink absorption Member supply means 143 Ink absorbing member S Printing paper

Claims (13)

[Claims] 1. A rotatable first member for winding a master around an outer peripheral surface.
, A rotatable transfer cylinder disposed at a position facing the first plate cylinder via a sheet conveyance path, and a master disposed around the transfer cylinder and wound around the outer peripheral surface. Rotatable second
The first and second plate cylinders are provided so as to be able to approach and separate from the transfer cylinder respectively, and one surface of the printing paper fed through the paper transport path has The image from the first plate cylinder is transferred when the first cylinder and the transfer cylinder are pressed against each other, and the other surface of the printing paper is pressed when the second plate cylinder and the transfer cylinder are pressed against each other. A stencil printing method using a stencil printing apparatus in which an image transferred to a transfer cylinder is transferred by the transfer cylinder, wherein printing is performed from a state where a printed master is wound around each of the first and second plate cylinders. When performed, after the plate cylinder and the transfer cylinder used for printing are pressed against each other via the printed master and rotated by a predetermined number of times,
A stencil printing method, wherein the printed master is peeled from the plate cylinder, and thereafter, printing is performed by winding a new plate-made master on the plate cylinder. 2. A rotatable first member for winding a master around an outer peripheral surface.
A rotatable transfer cylinder, which is disposed at a position facing the first plate cylinder via the sheet transport path, and on which an ink absorbing member can be wound on the outer peripheral surface; Arranged,
A second plate cylinder rotatable around which a master is wound around an outer peripheral surface; and an ink absorbing member supply means for supplying the ink absorbing member toward the transfer cylinder. The first printing cylinder, which is provided so as to be able to contact and separate from the transfer cylinder and is provided on one surface of the printing paper fed through the paper transport path, when the first printing cylinder and the transfer cylinder are pressed against each other. A stencil printing machine on which an image from a cylinder is transferred and an image transferred to the transfer cylinder when the second plate cylinder is pressed against the transfer cylinder is transferred to the other surface of the printing paper by the transfer cylinder. A stencil printing method using an apparatus, wherein printing is performed from a state in which a printed master is wound around each of a first and second plate cylinders, and the ink absorbing member is wound around the transfer cylinder. The plate cylinder used for printing and the transfer cylinder are connected to the printed master and After being pressed against each other via the ink absorbing member and rotated a predetermined number of times, the printed master is peeled from the plate cylinder, and the ink absorbing member is peeled off from the transfer cylinder. A stencil printing method characterized in that a new stencil master is wound and printed. 3. A rotatable first member for winding a master around an outer peripheral surface.
A rotatable transfer cylinder, which is disposed at a position facing the first plate cylinder via the sheet transport path, and on which an ink absorbing member can be wound on the outer peripheral surface; Arranged,
A second plate cylinder rotatable around which a master is wound around an outer peripheral surface; and an ink absorbing member supply means for supplying the ink absorbing member toward the transfer cylinder. The first printing cylinder, which is provided so as to be able to contact and separate from the transfer cylinder and is provided on one surface of the printing paper fed through the paper transport path, when the first printing cylinder and the transfer cylinder are pressed against each other. A stencil printing machine on which an image from a cylinder is transferred and an image transferred to the transfer cylinder when the second plate cylinder is pressed against the transfer cylinder is transferred to the other surface of the printing paper by the transfer cylinder. A stencil printing method using an apparatus, wherein printing is performed from a state in which a printed master is wound around each of a first and second plate cylinders, and the printed master is used for printing. Performing separation of the master and winding of the ink absorbing member around the transfer cylinder After the plate cylinder and the transfer cylinder are pressed against each other via the ink absorbing member and rotated a predetermined number of times, the ink absorbing member is peeled off from the transfer cylinder. A stencil printing method, wherein the stencil is wound around and printed. 4. A rotatable first member for winding a master around an outer peripheral surface.
A rotatable transfer cylinder, which is disposed at a position facing the first plate cylinder via the paper transport path, and is capable of winding print paper on the outer peripheral surface thereof, and a rotatable transfer cylinder disposed near the transfer cylinder. And a second plate cylinder rotatable around which a master is wound around the outer peripheral surface. The first and second plate cylinders are provided so as to be able to freely contact and separate from the transfer cylinder, respectively, and An image from the first plate cylinder is transferred to one surface of the printing paper fed through the path when the first printing cylinder is pressed against the transfer cylinder, and the other surface of the printing paper is transferred to the other surface of the printing paper. A stencil printing method using a stencil printing apparatus in which an image transferred to the transfer cylinder is transferred by the transfer cylinder when a second plate cylinder and the transfer cylinder are pressed against each other; When printing is performed from a state where the printed master is wound around the plate cylinder, the printing paper is wound around the transfer cylinder. The plate cylinder and the transfer cylinder used for printing are pressed against each other via the printed master and the printing paper and rotated by a predetermined number of times, respectively, and then the printed master from the plate cylinder, A stencil printing method, wherein the printing paper is peeled from the transfer cylinder, and thereafter, printing is performed by winding a new master made on the plate cylinder. 5. A rotatable first member for winding a master around an outer peripheral surface.
A rotatable transfer cylinder, which is disposed at a position facing the first plate cylinder via the paper transport path, and is capable of winding print paper on the outer peripheral surface thereof, and a rotatable transfer cylinder disposed near the transfer cylinder. And a second plate cylinder rotatable around which a master is wound around the outer peripheral surface. The first and second plate cylinders are provided so as to be able to freely contact and separate from the transfer cylinder, respectively, and An image from the first plate cylinder is transferred to one surface of the printing paper fed through the path when the first printing cylinder is pressed against the transfer cylinder, and the other surface of the printing paper is transferred to the other surface of the printing paper. A stencil printing method using a stencil printing apparatus in which an image transferred to the transfer cylinder is transferred by the transfer cylinder when a second plate cylinder and the transfer cylinder are pressed against each other; When printing is performed from a state where the printed master is wound around the plate cylinder, the master is wound around the plate cylinder used for printing. After separating the printed master and winding the printing paper around the transfer cylinder, pressing the plate cylinder and the transfer cylinder against each other via the printing paper and rotating each of them a predetermined number of times A stencil printing method, wherein the printing paper is peeled off from the transfer cylinder, and thereafter, a new stencil master is wound around the plate cylinder for printing. 6. A rotatable first member for winding a master around an outer peripheral surface.
And a rotatable transfer cylinder which is disposed at a position facing the first plate cylinder via the sheet transport path and is capable of winding a master around the outer peripheral surface thereof, and which is disposed near the transfer cylinder. A rotatable second plate cylinder on which a master is wound around the outer peripheral surface, wherein the first and second plate cylinders are provided so as to be able to approach and separate from the transfer cylinder, respectively, and the paper transport path is provided. The image from the first plate cylinder is transferred to one surface of the printing paper fed when the first plate cylinder and the transfer cylinder are pressed against each other, and the other surface of the printing paper is A stencil printing method using a stencil printing apparatus in which an image transferred to the transfer cylinder is transferred by the transfer cylinder when a second plate cylinder and the transfer cylinder are pressed against each other. When printing is performed from a state in which the printed masters are wound around the cylinders, the transfer cylinder is provided with first and second support members. 2, a blank master is wound in a direction facing the surface of the plate cylinder, and a plate cylinder used for printing and the transfer cylinder are brought into pressure contact with each other via the printed master and the blank master, and each of them is fixed to a predetermined position. After rotating the number of times, the printed master from the plate cylinder, and the unprinted master from the transfer cylinder, respectively, after that,
A stencil printing method, wherein a new stencil master is wound around the plate cylinder for printing. 7. A rotatable first member for winding a master around an outer peripheral surface.
And a rotatable transfer cylinder which is disposed at a position facing the first plate cylinder via the sheet transport path and is capable of winding a master around the outer peripheral surface thereof, and which is disposed near the transfer cylinder. A rotatable second plate cylinder on which a master is wound around the outer peripheral surface, wherein the first and second plate cylinders are provided so as to be able to approach and separate from the transfer cylinder, respectively, and the paper transport path is provided. The image from the first plate cylinder is transferred to one surface of the printing paper fed when the first plate cylinder and the transfer cylinder are pressed against each other, and the other surface of the printing paper is A stencil printing method using a stencil printing apparatus in which an image transferred to the transfer cylinder is transferred by the transfer cylinder when a second plate cylinder and the transfer cylinder are pressed against each other. When printing is performed from the state where the printed master is wound around each cylinder, the master is wound around the plate cylinder used for printing. The printed master is peeled off, and an unprinted master is wound around the transfer cylinder in a direction in which a support is opposed to the surfaces of the first and second plate cylinders. After being pressed against each other and rotated a predetermined number of times via the unplated master, the unplated master wound around the transfer cylinder is peeled off, and then a new plate-made master is wound around the plate cylinder. Stencil printing method characterized by performing printing. 8. A rotatable first roller for winding a master around an outer peripheral surface.
, A rotatable transfer cylinder disposed at a position facing the first plate cylinder via a sheet conveyance path, and a master disposed around the transfer cylinder and wound around the outer peripheral surface. Rotatable second
The first and second plate cylinders are provided so as to be able to approach and separate from the transfer cylinder respectively, and one surface of the printing paper fed through the paper transport path has The image from the first plate cylinder is transferred when the first cylinder and the transfer cylinder are pressed against each other, and the other surface of the printing paper is pressed when the second plate cylinder and the transfer cylinder are pressed against each other. A stencil printing method using a stencil printing apparatus in which an image transferred to a transfer cylinder is transferred by the transfer cylinder, wherein printing is performed from a state where a printed master is wound around each of the first and second plate cylinders. When performed, the unprinted master is wound on the plate cylinder after the printed master wound on the plate cylinder used for printing is peeled off, and the plate cylinder and the transfer cylinder are separated from the unprinted master. After being pressed against each other via a master and rotated a predetermined number of times, the plate cylinder Stencil printing method and peeling the non-plate-making master is wound, then and performing printing by winding a new stencil master on the plate cylinder. 9. The transfer cylinder includes a winding means for winding a printing paper on an outer peripheral surface, and when printing is performed by winding a new master made on a plate cylinder used for printing. After the printing paper is wound around the transfer cylinder, the plate cylinder and the transfer cylinder are pressed against each other via the master plate and the printing paper and rotated by a predetermined number of times, and then wound around the transfer cylinder. 9. The stencil printing method according to claim 1, wherein the printing paper is peeled off and printing is performed thereafter. 10. When printing is performed by wrapping a new plate-making master on a plate cylinder used for printing, printing paper is wrapped around the transfer cylinder, and the plate cylinder and the transfer cylinder are brought into contact with each other. After being pressed against each other via the master plate and the printing paper and rotating the printing paper a predetermined number of times, the printing paper wound around the transfer cylinder is peeled off, and then printing is performed. A stencil printing method according to any one of claims 2 to 7. 11. The stencil printing machine further includes a timer for counting an elapsed time from the end of the previous printing, and a printing plate used for printing according to the length of the elapsed time counted by the timer. The stencil printing method according to any one of claims 1 to 10, wherein the number of rotations at the time of pressure contact between the cylinder and the transfer cylinder is controlled. 12. The stencil printing machine further comprises a temperature detecting means for detecting a temperature inside the apparatus, wherein the control of the number of rotations is corrected based on the temperature detected by the temperature detecting means. Item 10. A stencil printing method according to item 11. 13. The stencil printing apparatus further comprising humidity detecting means for detecting the humidity inside the apparatus, wherein the control of the number of rotations is corrected based on the humidity detected by the humidity detecting means. The stencil printing method according to claim 11 or 12.