JPS59198185A - Stencil-type plate-making printer - Google Patents

Abstract

PURPOSE:To provide the titled printer capable of being smoothly restarted, wherein a mode-setting means for setting a plate-making and printing mode and a secrecy maintaining mode is provided, and a raw stencil paper is mounted in position without operating a plate-making means in the secrecy-maintaining mode. CONSTITUTION:A button 16 for setting the secrecy-maintaining mode is provided on the upper side of a front part of a cabinet assembly 1, and is prevented from being misoperated, by a cover 17. When the button 16 is depressed, the plate- making means is not operated while a plate-mounting means, a form cylinder driving means and a plate-dismounting means are operated, whereby a used stencil paper is released from a cylindrical form cylinder, and is discarded, and a non-perforated stencil paper is newly mounted onto the outside peripheral surface of the form cylinder. Accordingly, secrecy can not be revealed from the used stencil paper.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stencil-type stencil printing apparatus, and more specifically, it has a stencil-making means for making a stencil of a stencil printing base paper and a single-cylinder rotary-type stencil printing means. This invention relates to a stencil-type stencil printing device that performs printing.

A stencil-type stencil printing apparatus is already known, which has a stencil-making means for making a stencil sheet for stencil printing, and a single cylinder rotary printing means for performing stencil printing using the stencil printing sheet made by the stencil-making means.

The mono-cylinder rotary type stencil printing means has a cylindrical plate cylinder with a porous structure, a stencil printing base paper is attached to the outer circumferential surface of the cylindrical plate cylinder, and printing ink is applied from the inner circumferential side of the cylindrical plate cylinder. is now supplied. In the stencil printing means of this scale, when the stencil printing paper is peeled off from the outer peripheral surface of the cylindrical printing cylinder and discarded after printing with one stencil printing paper is completed, the cylindrical printing plate The outer peripheral surface of the cylinder will be left exposed to the outside air until a new stencil printing base paper is applied to the outer peripheral surface for the next printing. When maintained at N, the printing ink remaining on the outer circumferential surface of the cylindrical plate cylinder hardens and solidifies, and then a new stencil printing base paper is applied to the outer circumferential surface of the cylindrical plate cylinder, and the printing process begins. When printing is resumed, the flow of printing ink in the cylindrical plate cylinder may be obstructed, resulting in problems such as poor printing.

For this reason, in the past, in general, the used stencil printing paper was not peeled off from the cylindrical printing cylinder even after printing was completed, and the stencil printing paper was used as a protective covering sheet for the cylindrical printing cylinder. The stencil printing paper is left attached to the outer peripheral surface of the cylindrical printing cylinder until a new stencil printing printing paper is applied to the cylindrical printing cylinder during the next printing. There is.

This is a particular problem if the printed contents of the stencil printing base paper, which is left attached to the outer circumferential surface of the cylindrical plate cylinder when the stencil printing machine is out of service, must be kept confidential. However, if the printed content is confidential, such as when printing exam questions at a school, etc., the used stencil printing paper should be placed on the outer surface of the cylindrical plate cylinder as described above. If it is left attached, there is a risk that its secrets will be leaked.

The present invention provides a stencil printing apparatus having a single cylinder rotary stencil printing means as described above, which is equipped with a security function that can prevent leakage of confidential information from used stencil printing paper. The purpose of the present invention is to provide a stencil-type stencil printing device.

According to the present invention, this purpose is achieved by forming a porous I! on the outer circumferential surface of which a stencil printing paper is attached. A four-piece cylindrical plate cylinder, a plate cylinder drive means for rotationally driving the cylindrical plate cylinder, a printing ink supply means for supplying printing ink to the inner circumferential portion of the cylindrical plate cylinder, and a printing ink supply means for supplying printing paper to the inner peripheral part of the cylindrical plate cylinder. A press roller means having a press roller that presses onto the outer peripheral surface of the cylindrical plate cylinder, a paper feeding means for feeding the printing paper between the cylindrical plate cylinder and the press roller, and a hole in the stencil printing base paper a plate-making means for carrying out the above-mentioned steps; a plate-setting means for feeding the stencil printing paper from the plate-making means toward the outer circumferential surface of the cylindrical plate cylinder and attaching the stencil printing paper to the outer circumferential surface of the cylindrical plate cylinder; A plate discharge means for peeling off and discarding the stencil printing base paper mounted on the outer circumferential surface of the cylindrical plate cylinder from the cylindrical plate cylinder, and a mode setting means for selectively setting a stencil printing mode and a confidentiality mode, the mode When the prepress printing mode is set by the setting means, the plate making means, the plate loading means, the plate cylinder driving means, the plate discharging means, the printing ink supply means, the press roller means, and the paper feeding means are operated. a control means for operating the printing means, the plate cylinder driving means, and the plate discharging means without operating the plate making means when the security mode is set by the mode setting means; Achieved by plate-type plate-making and printing equipment.

5- According to this configuration, if the confidentiality mode is set after printing is completed, the used stencil printing paper is peeled off from the cylindrical printing cylinder and discarded, and the used stencil printing paper is Instead, a new stencil printing base paper is applied to the outer peripheral surface of the cylindrical plate cylinder, and this prevents leakage of confidential information from the used stencil printing base paper, and The outer peripheral surface of the cylindrical plate cylinder is not exposed to the outside air while the stencil-type plate-making and printing apparatus is stopped, and it is ensured that the stencil-type plate-making and printing apparatus can be restarted smoothly.

The invention will now be described in detail by way of example embodiments with reference to the accompanying drawings.

FIG. 1 is an external view showing one embodiment of a stencil-type stencil printing apparatus according to the present invention. The stencil-type stencil printing apparatus according to the present invention includes a single cylinder rotary stencil printing means and a thermal stencil printing base paper stencil-making means in one cabinet assembly 1.

The cabinet assembly 1 has a document insertion table 2 and a document insertion slot 3 on the negative side, and has a paper tray 6-4 below the document insertion table 2 for receiving printed paper, A document 4JI tlt Ob is placed on the second surface provided by the base cover 6, and a paper feed table 7 for stacking and storing printing paper is provided on the side opposite to the paper discharge table 4.

A power switch 8 and an operation panel 9 are provided on the front upper surface of the cabinet 4fIw 1, and the operation panel 9 includes a plate making start button 10, a printing start button 11, a switch button 12, and a keyboard for setting the number of prints. 13, a print speed setting button 14, and a print position adjustment button 15.

Furthermore, a security mode setting button 16 is provided on the front of the cabinet 1 to set a security mode, which will be described later.
It is selectively hidden by a cover 17 attached to the assembly 1.

The two-part cover 6 is pivoted to the machine frame (not shown) by a pivot 18, and has two positions: a closed position as shown, and an open position rotated approximately 90 degrees counterclockwise from the closed position. When it is in the closed position, it is selectively locked in the closed position by a locking means 19.

FIG. 2 shows the internal structure of the stencil-type stencil printing apparatus according to the present invention shown in FIG. In these figures, 20
shows a cylindrical plate cylinder, and the cylindrical private plate 1i120 is supported by a machine frame (not shown) so as to be rotatable around its own central axis 20C. The cylindrical plate cylinder 20 has a porous structure and is provided with a clamping means 21 on its outer periphery, and the clamping means selectively locks one end of the stencil printing paper.

The clamping means 21 is a cylindrical version 1! A band-shaped permanent magnet plate 22 fixed to the outer peripheral surface of the i20 and extending along one generatrix thereof, and a movable magnet plate rotatably attached to the cylindrical plate cylinder 20 by a shaft 23 extending along its axial direction. It has a clamp piece 24. A gear 2 is attached to one end of the shaft 23.
5 is attached to the gear, and the cylindrical version! l1i1
A drive gear 27 attached to one end of lever 26 is adapted to selectively engage when 20 is in the initial rotational position as shown. The lever 26 is pivotally supported by a machine frame (not shown) by a pivot 28, and when the solenoid 29 is not energized, it is biased in the counterclockwise direction around S1 in the figure by the spring force of a spring 30, and the drive gear 27
is pulled away from the gear 25, and when the solenoid 29 is energized, it rotates clockwise in the figure against the spring force of the spring 30, and the drive gear 27 is at the initial rotation position. It is designed to mesh with the gear 25 of the cylindrical plate cylinder 20. The driving gear 27 is selectively rotationally driven by the electric motor Ia 31 attached to the lever 26, and as the gear 25 is rotated by this, the re-clamping piece 24 is moved to the clamping position where it is attracted to the permanent magnet plate 22. , between a clamp standby position that is away from the permanent magnet plate 22 and inclined at an angle with respect to the permanent magnet plate 22, and a fully open position that is rotated approximately 180 degrees in the counterclockwise direction from the clamp position as shown in the figure. It is designed to be rotationally driven.

The cylindrical plate 11120 is coaxially connected to the central axis 20c of the sprocket 1 to 34a, and the sprocket is driven by an electric motor 33 by an endless chain 32.
drive sprocket 341). With this power transmission device, the cylindrical plate cylinder 20 is selectively driven to rotate in divided rotations or continuously in a counterclockwise direction in the figure by an electric motor 33.

Inside the cylinder of the cylindrical private plate 1i120 is a printing ink supply means 35.
is provided. The printing ink supply means 35 is an ink supply means disposed so that its outer peripheral surface contacts the lower inner peripheral surface of the cylindrical plate cylinder 20 and is rotatable around its own central axis 37.
The ink supply roller 36 includes a doctor rod 38 extending along the generatrix direction of the roller with a predetermined relatively small gap to the outer circumferential surface of the ink supply roller 36. By being rotationally driven in the same direction as the cylindrical private plate 1ji20 in synchronization with the rotation, printing ink in the ink reservoir A is transferred to the cylindrical private plate [1i! It is designed to be supplied to the inner peripheral surface of 20. That is, as the ink supply roller 36 rotates, the printing ink in the ink reservoir A passes through the gap between the ink supply roller 36 and the doctor rod 38, and at the time of A, the printing ink is absorbed into the ink supply roller 36.
forming a printing ink layer with a thickness of 147 i' on the outer peripheral surface of the
This printing ink layer is supplied to the inner peripheral surface of the cylindrical plate cylinder 20 as the ink supply roller 36 rotates, and is used for printing.

If a more detailed explanation of the above-mentioned printing ink supply means 35 is required, please refer to Japanese Patent Application No. 53-128043 and Japanese Patent Application No. 55-12 filed by the same applicant as the present applicant.
Please refer to the specifications and drawings of No. 6934 and Japanese Patent Application No. 57-122589.

A press roller 40 is provided at a position substantially facing the ink supply roller 36 across the cylindrical plate cylinder 20, that is, below the cylindrical plate cylinder 20. This press roller 40 is rotatably attached to a lever 42 by a pivot shaft 41, and the lever is pivotally supported by a machine frame (not shown) by a pivot shaft 43. The lever 42 pivotally supports a cam follower roller 44, and this cam follower [core roller 4
4 is pressed against a cam 46 attached to a cam shaft 45 by the spring force of a spring 47, and in the printing process, the cam 46 is rotationally driven in synchronization with the rotation of the cylindrical plate cylinder 20, so that the lever 42 is rotated reciprocatingly around the axis 43. Due to the reciprocating rotation of the lever 42, the repress roller 40 is selectively pressed against the outer peripheral surface of the cylindrical plate cylinder 20.
The printing paper P sent between this and the outer circumferential surface of the cylindrical plate WA20 is pressed against the outer circumferential surface of the cylindrical plate cylinder 20, and as shown in the figure, the printing paper P sent between this and the outer circumference of the cylindrical plate WA20 is pressed. Collision with the clamping means 21 is avoided by moving away from the outer circumferential surface of the press roller 40. In the plate ejecting and printing processes, the press roller 40 is moved away from the outer circumferential surface of the cylindrical plate cylinder 20 as shown in the figure. held at a further distance.

The paper feed tray 7 is set almost horizontally and is movable vertically relative to the machine frame (not shown), and a pinion 48 is installed on the paper feed tray. The paper feed tray 7 is engaged with a rack 49 extending in the direction, and is selectively rotationally driven by an electric motor (not shown) mounted on the paper feed tray 7, and rotates while meshing with the rack 49. The vertical movement of the paper feed tray 7 is performed according to the amount of printing paper P stacked on the paper feed tray 7. As the amount decreases, the paper feed tray 7 is raised.

A front barrier board 50 is fixedly arranged in front of the paper feed tray 7, and the front barrier board is used for printing 1t placed on the paper feed tray 7.
It serves to regulate the position of the front end of P and to align this front end. A paper feed roller 60 is rotatably provided above the front wall plate 50 by a shaft 59. Paper feed 1] - The roller 60 is made of a material with a relatively large coefficient of friction, such as rubber or a rubber-like product, and is made of a material having a relatively large coefficient of friction, such as rubber or a rubber-like product.
Each time a sheet of printing paper is sent out, it is rotated in the counterclockwise direction in the figure, and works together with the paper sorting pad 61 to separate the printing paper P on the paper feed tray 7 from the top one to the next. They can be taken out one by one.

A registration roller device 62 is provided at a position ahead of the paper feed roller 60 in the paper feed direction, that is, on the side of the cylindrical plate cylinder 20 . The registration roller device 62 has a pair of drive rollers 63 and a driven roller 64, and these rollers rotate in synchronization with the rotation of the cylindrical plate cylinder 20 when the cylindrical plate cylinder 20 is in a predetermined rotation phase. The printing paper P, which is guided by the guide plates 65 and 66 from the paper feed tray 7 by the paper feed roller 60, is sent between the cylindrical plate cylinder 20 and the press roller 40. .

On the outside of the cylindrical plate cylinder 20, a printing I is provided from the cylindrical plate cylinder 20 at a position opposite to the position where the registration roller device 62 is disposed.
A peeling claw 67 for peeling off the P is provided.

Cylindrical plate by registration roller device 62! The printing paper P fed between the cylindrical plate cylinder 20 and the press roller 40 in synchronization with the rotation of the cylinder 1120 is pushed by the press roller 40 onto the stencil printing base paper mounted on the outer circumferential surface of the cylindrical plate WA20. ), and printing ink is transferred from the perforated portions of the stencil paper to form a printed image on the upper surface as shown in the figure. This printing paper is peeled off from the cylindrical plate cylinder 20 by the peeling claw 67, and due to the force exerted by the rotation of the cylindrical plate cylinder 20, it flies to the right as shown in the figure, and 1i1 paper table 4 It falls on top. This is the stencil printing process.

A plate making means 70 is provided on one side of the cylindrical plate cylinder 20 opposite to the paper feed table 7. A plate-making device 70 (J, a box 71 with an upward opening, and a 1" mounted on the top of the box 71, I: a rectangular glass light transmitting plate 72 and a box 7
The exposure stage 7/l has a light source device 73 which is provided in the light transmitting plate 72 and has a light source device 73 which directs the light beam toward the light transmitting plate 72, and a press plate 75 facing the light transmitting plate 72. The mutually opposing surfaces of the transmitting plate 72 and the suppressing plate 75 are parallel to each other, and the openings are approximately horizontal 2i, and a cushion member 76 made of sponge is attached to the opposing surface of the suppressing plate 75 to the light transmitting plate 72. (= Ju. The press plate 75 is fixed to the upper cover 6, and the exposure stage 74 is provided on a machine frame (not shown) so as to be movable in the vertical direction. A cam follower is installed at the bottom of the exposure stage 771. A rod 77 is provided which engages a cam 78 under its own weight. The cam 78 is drivingly connected to an electric motor 79 which selectively rotates the cam 78 in the clockwise and counterclockwise directions as shown. Due to the rotation of the cam 78, the exposure stage 74 is rotated when the light transmitting plate 72 is separated from the cushion member 76 of the suppressing plate 75, as shown in FIG. (lowered position) and a pressed position (upper limit position) where the light transmitting plate 72 is pressed against the cushion member 76
It is designed to be driven up and down between the two.

The basic idea of the plate-making means 70 is disclosed in Japanese Patent Application No. 54-9794.
4, and an improvement thereof was proposed in Japanese Patent Application No. 50078/1983 by the same applicant as the present applicant.

A stencil printing paper storage section 80 is provided below the document insertion table 2 on the side opposite to the cylindrical plate rIA20 of the plate making means 70, and the stencil printing paper S is stored in the storage section 8o on a bobbin 81. It is wound up and stored in roll form.

The upper surface of the document insertion table 2 is a light transmitting plate 72 in the open position.
A base paper storage section 80J is located at almost the same height as the upper surface, and between the light transmitting plate 72 and the document insertion table 2.
A free roller 82 for guiding the stencil printing base paper S is rotatably provided in a machine frame (not shown). A lever 84 is attached to the upper cover 6 on a pivot 83, and this lever 84 is provided with a rotatable weight roller 85 that engages with the free roller 82 from above. The lever 84 is engaged by an engaging piece 86 with a push-up lever 88 attached to a machine frame (not shown) by a pivot 87, and the lever 88 is connected to a solenoid 9.
When the lever 8 is not energized, the spring force of the spring 89 causes the lever 8 to be in the rotational position as shown in FIG.
71 and move the weight roller 85 to the free roller 82.
When the solenoid 90 is energized, it is rotated by the solenoid in a direction opposite to 11i\S in the figure against the spring force of the spring 89, and the weight is separated from the engagement piece 86. The roller 85 is freely allowed to engage on the free roller 82.

A light-transmitting type optical sensor 107 is provided near the entrance of the plate-making means 70 to detect the presence or absence of the document sheet hO.

A feed roller device 91 is provided between the plate making means 70 and the cylindrical plate cylinder 20 in close proximity to one side of the exposure stage 74. The feed roller device 91 includes a pair of upper and lower rollers 92. ．．
93, the lower roller 92 is rotatably supported by a machine frame (not shown), and selectively rotated counterclockwise in the figure by an electric motor 94, whereas the upper roller 93 is rotated by the upper cover 6. It is rotatably installed.

Although not shown in the drawing, the lower roller 92 freely rotates in the counterclockwise direction with a predetermined rotational resistance in the middle of the dynamic force transmission path between the lower roller 92 and the electric VJ machine 94. A one-way slip clutch is provided that allows the The engagement portion between the lower roller 92 and the upper roller 93 is located at a lower position than the upper surface of the light transmitting plate 72, so that the stencil printing paper S that has passed over the light transmitting plate 72 is transferred to the exposure stage 74.
The stencil printing Kawahara paper attached to the original sheet is bent downward by 18 - approximately 90 II in the figure at the separation claw 95 by passing through the original separation claw 95 and proceeding to the engagement portion between the lower roller 92 and the upper roller 93. It is now possible to

On the side of the feed roller device 91 opposite to the plate making device 70, that is, on the side of the cylindrical plate cylinder 20, a sheet cutter device @96 is provided in steps. The sheet cutter device 96 includes a rotary blade 97 rotatably attached to a machine frame (not shown) and a fixed blade 98 attached to the upper cover 6, and the rotary blade 97 is selected by an electric motor 99. The stencil printing base paper S is cut by being rotationally driven.

The rotary blade 97 and the lower roller 92 are connected to a belt 118 so that the lower roller 92 rotates as the rotary blade 97 rotates.
Drive connected by. A one-sided clutch (not shown) is provided in the middle of the power transmission path between the rotary blade 97 and the lower roller 92 so that the rotary blade 97 is not rotated by the rotation of the lower roller 92.

On the side of the cylindrical plate cylinder 20 from the sheet 1 to cutter device 96, guide plates 100 and 101 are provided for guiding the stencil printing paper S to the clamping means 21 of the cylindrical plate cylinder 20 with the same number. A blower fan 102 is provided on the guide plate 100. The blower fan 102 blows air from diagonally above the permanent magnet plate 22 of the cylindrical plate ISi 20 at the initial rotation position, and the force of the wind permanently blows the tip of the stencil printing paper S. Press lightly on the top surface of the magnet plate 22 (=
i 11. Due to the action of the blower fan 102, the leading end of the stencil printing base paper S is reliably fed between the permanent magnet plate 22 and the clamp piece 24 in the clamp standby position, and the clamping means 21 is used for stencil printing. One end of the base paper S is securely clamped 4q.

The upper cover 6 is equipped with a reflective optical sensor 1 that detects when the leading edge of the stencil printing paper S reaches the permanent magnet plate 22.
Further, the upper cover 6 is provided with guide plates 105 and 106 for guiding the original sheet 0 that has passed through the plate-making means 70 toward the original discharge port 5.

On the opposite side of the plate-making means 70 of the cylindrical plate Ill 20, there is a means for removing the stencil printing paper S attached to the cylindrical plate cylinder 20 from the cylindrical plate cylinder 20 after printing is completed. 110 is provided. The base paper removing means 110 has two upper and lower support shafts 111 and 112 extending along the axial direction on one side of the cylindrical plate cylinder 20, and each of these support shafts has a gear 113 that meshes with each other. and 114 are arranged in a plurality of stages spaced apart from each other in the axial direction. The support shaft 111 is drivingly connected to an electric motor 115, and is selectively driven clockwise in the figure by the electric motor 115.

Each of the support shafts 111 and 112 has rubber-like elastic tapping pieces 116 and 117 made of rubber or rubber-like material;
I'm getting 1 digit. The base paper removing device 110 also has a pivot 11.
It has a stripping claw 120 pivotally supported by a machine frame (not shown) by reference numeral 9, and this stripping claw 120 is used when the solenoid 121 is not energized (when the solenoid 121 is not energized).
Due to the spring force of 2, as shown in the figure, its tip 1
20a is at the 0 movement position, which is located sufficiently away from the outer peripheral surface of the cylindrical plate cylinder 20, and when the solenoid 121 is energized, it rotates clockwise by the spring force of the spring 122 at 21- in the figure. However, the tip portion 120a is located at a position very close to the outer peripheral surface of the cylindrical plate cylinder 20.

The base paper removing means 110 has an upper guide plate 123 and a lower guide plate 124, and the stencil printing base paper S peeled off from the cylindrical plate cylinder 20 by the peeling claw 120 is removed from the gear 11.
3 and 114, the upper guide plate 123 and the lower guide plate 1
24, and is sent to the back of the cabinet assembly 1 by a traversing device 125, and is dropped into a paper waste box (not shown) attached to the back of the cabinet assembly 1. The lateral feed device @125 includes a plurality of rubber rollers 1 that are supported by a support shaft 126 and are rotatable.
27, and a metal roller 128 with serrations that engages with the rubber roller, and the roller 128 has a shaft 129 and a gear 1.
drivingly connected to electric motor 132 by 30 and 131;
The electric motor selectively drives the rotation.

The above-mentioned base paper removing device 110 is disclosed in Japanese Utility Model Application No. 54-179522-95, Japanese Patent Application No. 55-17391, and Utility Model Application No. 57-63 filed by the same applicant as the present applicant.
378, and if a more detailed explanation is required, please refer to the specifications and drawings of these applications.

A control device 140 is installed in the kitobinette assembly 1. The control tIII device 140 is an electric type including a microcombination unit, and operates according to a flowchart as shown in FIG. When the print start button 11 is operated, the plurality of electric motors and solenoids are operated according to a predetermined print program, and when the security mode setting button 16 is operated, the plurality of electric motors and solenoids are operated according to a predetermined security program. It is meant to be controlled. The plate making program includes a plate discharge step, a split-exposure type thermal plate making step, and a plate application step, the printing step includes a normal stencil printing step, and the confidentiality program includes a plate discharge step and a plateless stencil printing base paper into a cylindrical plate. The detailed operation sequence of each mode will become clear from the explanation of the operation described below.

Next, the operation of the stencil-type stencil printing apparatus constructed as described above will be explained.

When using the stencil printing device, first open the upper cover 6 to preset the stencil printing paper, attach the stencil printing paper roll to the stencil paper storage section 80, and store the stencil of this stencil printing paper roll. Pull out the leading edge of the printing base paper S from the base paper storage section 80 and transfer it to the free roller 8
2. The light transmitting plate 72 and the lower roller 92 are passed through, and the tip thereof is positioned on the guide plate 101. In addition, information board 10
An index line indicating the appropriate position of the leading edge of the stencil paper S may be drawn on the top surface of the stencil paper S.
It suffices if the tip of the tip is positioned.

This work is performed with the upper cover 6 exposed,
At this time, the weight roller 85, pressing plate 75, upper roller 93, and fixed blade 98 are lifted upward together with the upper cover 6, so this operation can be performed relatively easily.

After the presetting of the stencil printing base paper S as described above is completed, the upper cover 6 is closed. When the upper cover 6 is closed, the stencil printing paper S is sandwiched between the lower roller 92 and the upper roller 93.

When printing based on a new original sheet O, before operating the prepress start button 10, manually place the original sheet 0 with the original side facing down on the original insertion table 2''2, and place it on the original insertion table 2''. Slide the plate-making device 70 through the document insertion slot 3.
Insert it toward the At this time, the solenoid 90 is not energized and the way (~[l-ra 85 is in a position separated from the free roller 82, so the document sheet 0 has passed through the The original sheet 0 is inserted between the light transmitting plate 72 and the suppressing plate 75 of the exposure stage 74 which is in the lowered position by sliding on the preset stencil printing base paper S.The original sheet 0 is inserted onto the original insertion table 2. It is only necessary to twist the row 25 until the matching scale of the provided original size scale matches the rear edge of the original sheet O. When the original sheet is inserted as described above, the optical sensor 107 detects the original sheet O. Detects that it has been inserted.

After the original sheet has been inserted as described above, when the plate-making start button 10 is operated and the plate-making mode is set, the solenoid 90 is energized and the weight roller 8 is activated.
5 descends, and the stencil printing paper S and the original sheet O are sandwiched between the weight roller and the free roller 82.

At the same time, the solenoid 29 is energized, and the drive gear 27 is in the initial rotation position.
5, and the drive gear 27 is driven clockwise in the figure by the electric motor 31, thereby clamping the stencil printing paper that has been in the clamp position and is attached to the outer peripheral surface of the cylindrical plate cylinder 20. Clamping piece 24
moves to the fully open position, and the stencil printing paper is unlocked. When the clamp piece 24 is in the fully open position, the electric motor 31 is stopped, the energization to the solenoid 29 is also stopped, and the drive IEt gear 27 is separated from the first mesh of the gear 25.

Next, the base paper removal device 110 operates as described above, and the cylindrical plate cylinder 20 is rotated once at low speed by the electric motor 33, whereby the stencil printing base paper is removed from the cylindrical plate cylinder 20, so-called. The stencil is discharged, and the stencil printing paper is discarded in a stencil printing paper disposal box (not shown).

When the plate ejection as described above is completed, the solenoid 29 is energized, the drive gear 27 again meshes with the gear 25 of the cylindrical plate cylinder 20 at the initial rotation position, and the drive gear 27 is rotated by the electric motor 31 as shown in the figure. By being driven clockwise, the clamp piece 24 moves from the fully open position to the clamp standby position.

When the clamp)'+2/I is located at the clamp standby position, the electric elJ31 is stopped. The state at this time is shown in FIG.

Next, the electric motor 94 is started, and the lower roller 92 and upper roller 93 transport the leading edge of the stencil printing paper S toward the clamping means 21 of the cylindrical plate cylinder 20. The leading end of the stencil printing base paper S is a permanent magnet plate 22 of the clamping means 21.
When it reaches the top and is detected by the optical sensor 103, the electric motor 94 is stopped, and the rotational drive of the lower [1-ra] 92 is stopped, thereby stopping the conveyance of the stencil printing paper S.

Next, the electric motor 31 is driven, and the drive gear 27 rotates counterclockwise in the figure, so that the clamp piece 271 is located at the clamp position, and the tip of the stencil printing paper S is clamped to the permanent magnet plate 22. The cylindrical plate cylinder 20 is sandwiched between the pieces 24
is locked. When the clamp piece 24 is located at the clamp position, the electric motor 31 is stopped, the energization to the solenoid 29 is stopped, and the drive gear 27 is disengaged from the gear 25.

Next, the electric motor 79 is driven, and the cam 78 rotates clockwise in the figure, thereby raising the exposure stage 74.
The portion of the stencil printing base paper S and the original sheet O between the light transmitting plate 72 and the pressing plate 75 is the portion between the light transmitting plate 72 and the pressing plate 75.
The light source device 73 emits light in this pressed state, and the light passes through the light transmitting plate 72 and hits the polymer of the stencil printing Kawahara paper S and the original sheet 0. irradiated. By this light irradiation, the stencil printing paper S is thermally perforated. When this -th exposure is completed, the rotation direction of the electric motor 179 is reversed, and the cam 7
As the exposure stage 74 is rotated in the counterclockwise direction of 8, the light transmitting plate 72 is pulled 11i by the pressure 4fii75.
11, and the pressure bonding between the stencil printing base paper S and the original sheet 0 is released.

Next, the electric motor 33 is started, and the cylindrical plate cylinder 20 rotates counterclockwise in the figure. By this rotation of the cylindrical plate cylinder 20, the stencil printing paper S is pulled, and the leading end of the stencil printing paper S is moved to the cylindrical plate 11i! The portion wrapped around the outer circumferential surface of 2.0 and perforated as described above is pulled out from between the light transmitting plate 72 and the press plate 75, and between the light transmitting plate 72 and the press plate 75 is a stencil printing base paper. S and the next part of original sheet 0 are located. At this time, the lower roller 92 is not driven to rotate, but due to the action of the one-way sliding clutch, it is driven to rotate counterclockwise in the figure with a predetermined rotational resistance as the stencil printing paper S moves. As a result, a predetermined tension is obtained in the stencil printing paper S between the lower roller 92 and the cylindrical plate cylinder 20, and the stencil printing paper S is mounted on the cylindrical plate cylinder 20 without horizontal wrinkles. As the stencil printing paper S is conveyed, the original sheet 0 placed on the stencil printing paper S moves together with the original sheet 0 stuck to the stencil printing paper by the above-mentioned thermal perforation, and the stencil printing paper S moves along with the stencil printing paper S. When pulled out from between the light transmitting plate 72 and the suppressing plate 75, the original sheet O is bent downward at an almost right angle in the figure by the separating claw 95, whereas the original sheet O moves straight due to its own strength and is pushed to the guide plate. By being guided by 105 and 106 toward the WL document discharge port 5, the exposed (plate-making) completed portion of the manuscript sheet O and the stencil printing base paper S are separated and separated.

The cylindrical plate cylinder 20 is dividedly rotated by an angle corresponding to a circumferential dimension substantially equal to one exposure width, and when this divided rotation by a predetermined angle is performed, the electric motor 33 is stopped and the cylindrical plate cylinder 20 stops rotating, and along with this, the stencil printing base paper S
movement stops. At this point, the exposure stage 74 is raised again by the cam 78, and the portions of the stencil printing paper S and the original sheet O are exposed to the light transmitting plate 72 and the cushion member 76 of the suppressing plate 75.
and the light source device 73 and are pressed together.
A second exposure is performed by emitting light, and thermal perforation of the stencil printing base paper S is performed. From now on, as described above, when the stencil printing stencil S and the original 0゛1 sheet O are released, the movement and printing of the stencil printing stencil S, which is performed by the divided rotation of the cylindrical plate cylinder 20, and the stencil printing Thermal perforation performed by exposure when the base paper S and original sheet 0 are pressed together is alternately and repeatedly performed.

Plate making and plate setting progress through multiple exposures and movement of the stencil printing base paper S by dividing rotation of the cylindrical plate cylinder 20, and the optical sensor 1
When the trailing edge of document sheet 0 is detected by No. 107, the power supply to the solenoid 90 is stopped and the weight roller 85 is raised. After this, one final exposure is performed, and after this exposure, the light transmitting plate The electric press 79 is stopped when the pressure plate 72 and the pressure plate 75 are separated and the pressure bonding with the original sheet O such as the stencil printing paper S is released. After this, the cylindrical plate cylinder 20 rotates, and the cylindrical plate cylinder 20 of the stencil printing base paper S is rotated.
Winding around 0 is performed. Then, when the cylindrical plate cylinder 20 has rotated by a predetermined rotation angle (approximately 330 degrees) from the initial rotation position, the electric motor 99 is started, and the rotary blade 97
The stencil printing base paper S is cut by one rotation, and then the cylindrical plate cylinder 20 continues to rotate once at a low speed, and the paper feeding means and press roller means are operated, thereby performing stencil printing. While winding the base paper S around the outer peripheral surface of the cylindrical plate cylinder 20, so-called plate setting, is completed, one sheet of test printing is performed.

The cutting of the stencil printing paper by the sheet cutter device 96 is performed while the stencil printing paper S is being moved by the rotation of the lower roller 92 in conjunction with the rotation of the rotary blade 97. By rotating, the cut end of the stencil printing paper S on the side of the sheet storage section 80 is fed between the guide plates 100 and 101 and held there.

As described above, after the printing of the stencil printing base paper S and the trial printing are completed, when the printing start button 9 is operated and the printing mode is set, the cylindrical number 11120 rotates continuously, and the stencil printing described above is started. The printing is started, and the cylindrical plate cylinder 20 rotates the number of times corresponding to the number of prints determined by J: on the print number setting keyboard 13, and printing is completed. Incidentally, when printing is completed, the first cylindrical plate ll1i20 is stopped at the initial rotation position as shown in FIG.

When the security mode setting button 16 is operated after printing is completed, the security mode is set. At this time, first, the solenoid 29 is energized, the drive gear 27 meshes with the cylindrical gear 25 of 5120 in the initial rotation position, and the drive #JtfJ wheel 27 is driven clockwise in the figure by the electric motor 31. As a result, the clamp piece 24 that has been in the clamp position and clamps the used stencil printing paper attached to the outer peripheral surface of the cylindrical plate cylinder 20 moves to the fully open position, and the stencil printing paper is moved to the fully open position. is unlocked. When the clamp piece 24 is in the fully open position,
The electric motor 31 is stopped, the solenoid 33-29 is de-energized, and the drive gear 27 is switched to the gear 25.
separate from the occlusion.

Next, the base paper removal device 110 operates as described above, and the cylindrical plate cylinder 20 is rotated once at a low speed by the electric motor 33, whereby the stencil printing base paper is removed from the cylindrical plate cylinder 20, and the so-called plate removal is performed. The stencil printing base paper is then discarded in a base paper disposal box (not shown). The base paper is disposed of in a stencil paper disposal box 1: sometimes it is already crumpled. It is now impossible to decipher the printed content of this discarded stencil printing paper, and therefore, the confidentiality of the printed content of the stencil printing paper will not be leaked.

When the plate discharge as described above is completed, the solenoid 29 is energized, the drive gear 27 again meshes with the gear 25 of the cylindrical plate cylinder 20 which is in the initial rotation position, and then the electric drive 41131 drives the plate cylinder 20. By driving the gear 27 counterclockwise in the figure, the clamp piece 24 moves from the fully open position to the clamp standby position. When the clamp piece 24 reaches the clamp standby position 34-2, the electric motor 31 is stopped.

Next, the electric motor 94 is started, and the leading end of the stencil printing paper S is conveyed toward the clamping means 21 of the cylindrical plate cylinder 20 by the lower roller 92 and the upper roller 93. When the leading edge of the stencil printing paper reaches the permanent magnet plate 22 of the clamping means 21 and is detected by the optical sensor 103, the electric motor 94 is stopped, and the rotational drive of the lower row 592 is stopped, thereby stopping the stencil printing. Conveyance of the printing base paper S is stopped.

Next, the electric motor 31 is driven, and the drive gear 27 rotates counterclockwise in the figure, so that the clamp piece 24 moves from the clamp standby position to the clamp position, and the tip of the stencil printing base paper S becomes a permanent magnet. The plate 22 is clamped by clamp pieces 24 and locked to the cylindrical plate cylinder 20. When the clamp piece 24 is positioned at the clamp position, the electric machine 31 is stopped, the energization to the solenoid 29 is stopped, and the drive gear 27 is stopped.
is separated from the gear 25.

In the above-mentioned plate making mode, the divided exposure of the thermal plate making is started next, but in this confidentiality mode,
Next, the electric motor 33 rotates the cylindrical plate FIA 20 in the counterclockwise direction in the figure, and accordingly, the stencil printing Kawahara paper S without a plate is fed out from the storage section 80 and the cylindrical plate [outer surface of the cylindrical plate 20 "I rolled up" and got kicked. When the cylindrical plate cylinder 20 rotates by a predetermined rotation angle, for example, about 330 degrees, from the initial rotation position, the electric motor 99 is started, and the rotary blade 97 rotates once, thereby cutting the stencil printing base paper S. Afterwards, as the cylindrical plate cylinder 20 continues to rotate once at a low speed, a sheet of unmade stencil printing base paper S is plated on the outer peripheral surface of the cylindrical plate cylinder 20, and the outer peripheral surface of the cylindrical plate cylinder 20 is is protectively coated with the stencil printing base paper S without a plate. Incidentally, when the plateless stencil printing base paper S is plated, the paper feeding means and the press roller means are operated, a sheet of printing paper P is supplied, and the printing paper P and the press roller 40 are used to transfer the plateless stencil printing paper S. The stencil printing paper may be pressed against the outer circumferential surface of the cylindrical printing cylinder so that it is mounted in tight contact with the cylindrical printing cylinder.

Although the present invention has been described in detail above with reference to specific embodiments, it is understood that the present invention is not limited thereto and that various embodiments are possible within the scope of the present invention. This will be obvious to businesses.

[Brief explanation of the drawing]

FIG. 1 is an external view showing one embodiment of the stencil-type plate-making and printing apparatus according to the present invention, FIG. 2 is a schematic configuration diagram showing the internal structure of the stencil-type plate-making and printing apparatus according to the present invention, and FIG. 2 is a flowchart showing the control procedure of the stencil set printing apparatus. 1... Cabinet assembly, 2... Document insertion table, 3
...ORI insertion [1, 4... Paper ejection tray, 5... Document ejection port, 6... Upper cover, 7... Paper feed tray, 8...
・Power switch. 9.--Operation panel, 10.. Prepress start button, 11.
...Print start button, 12...Stop button, 13...Keyboard for setting the number of prints, 14...Print speed setting button, 15...Button for adjusting print position,
16... Confidentiality mode setting button, 17... Cover, 18... Pivot, 19... Lock means, 20...
・Cylindrical plate cylinder. 21... Clamping means, 22... Permanent magnet plate, 23
...37- Shaft, 24... Movable clamp piece, 25... Gear, 26
...Lever, 27...Drive m wheel, 28...Pivot,
29... Solenoid, 30... Spring, 31... Electric motor, 32... Endless chain, 33... Electric motor,
34. a,, 34. b... Drive sprocket, 3
5... Printing ink supply means, 36... Ink supply roller, 37... Center shaft, 38... Doctor Rondo,
40...Press roller, 41...Pivot. 42...Lever, 43...Pivot, 44...Cam follower roller, 45...Cam shaft, 46...Cam, 4
7...Spring. 48... Binion, 49... Rack, 50... Front wall plate, 59... Shaft, 60... Paper feed roller, 61
... Paper sorting pad, 62 ... Registration roller device,
63... Drive roller, 64... Followed roller, 65.
66...Information board. 67... Peeling nail, 70... Plate making means, 71...
Box, 72...Glass light transmitting plate, 73...Light source device. 74... Exposure stage, 75... Pressing plate, 76...
・Cushion member, 77...Cam follower rod, 7
8... Cam, 79... Electric motor, 80... Base paper storage section, 81... Bobbin, 82... Free roller, 83
... Pivot, 84 ... Lever, 85 ... Weight roller, 8G ... Engagement piece. 38- 87... Pivot, 88... Lever, 89... Spring,
90... Solenoid, 91... Feed roller device, 9
2...Lower roller, 93...Upper roller, 94...
- Electric motor, 95... Base paper-original separation claw, 96... Sheet cutter device. 97... Rotating blade, 98... Fixed blade, 99... Electric motor, 100.101... Guide plate, 102... Ventilation fan, 103... Optical sensor, 105.106... Guide Plate, 107... Optical lens, 110... Base paper removal means, 111.112... Support shaft, 113.114.
...Gear, 115...Electric motor, 116.117...
Beating piece, 118... Belt, 119... Axis, 12
0... Stripping claw, 121... Solenoid, 122...
... Spring, 123 ... Upper guide plate, 124 ... Lower guide plate, 125 ... Lateral feed device. 126...Support shaft, 127...Rubber roller, 128
... Serration I" metal roller, 129 ... shaft,
130.131...Gear, 132...Electric motor, 14
0... Control device patent applicant: Risowa Gaku Kogyo Co., Ltd.
Patent Attorney Masaki Akashi 39- Figure 1 JP-A-59-198185 (12)

Claims (1)

[Claims] A cylindrical plate cylinder having a porous structure to which a stencil printing paper is mounted on the outer circumferential surface, a plate cylinder driving means for rotationally driving the cylindrical plate cylinder, and supplying printing ink to the inner circumferential surface of the cylindrical plate cylinder. a press roller means having a printing ink supply means and a press roller for pressing the printing paper against the outer peripheral surface of the cylindrical plate cylinder;
a paper feeding means for feeding printing paper between the cylindrical plate cylinder and the press roller; a plate-making means for perforating the stencil printing paper; and a plate-making means for feeding the stencil printing paper from the plate-making means to the outer periphery of the cylindrical plate cylinder. a printing means for attaching the stencil printing paper to the outer circumferential surface of the cylindrical plate cylinder; It has a plate discharging means for peeling off and discarding it, and a mode setting means for selecting and setting a plate making/printing mode and a confidentiality mode, and when the plate making/printing mode is set by the mode setting means, the plate making means and the plate setting means. and the plate cylinder drive means, the plate discharge means, the printing ink supply means, the press roller means, and the paper feed means, and when the security mode is set by the mode setting means, the plate making means is operated. First, there is provided a stencil-type stencil printing apparatus, comprising a control means for operating the plate loading means, the plate cylinder driving means, and the plate discharging means.