JPH02273Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a stencil-type stencil printing device, and particularly to a combination device of a thermal stencil stencil-making device and a single cylinder rotary stencil printing device.

BACKGROUND ART A stencil-type stencil printing apparatus is already known, which includes a stencil-making means for making a stencil sheet, and a printing means for performing stencil printing using the stencil sheet made by the stencil-making means. One of the already known stencil printing devices includes a cylindrical light-transmitting glass tube that is driven to rotate around its own central axis, a light source device disposed inside the cylinder of the glass tube, and a light source device arranged in the cylinder of the glass tube. The plate-making means has a pressure bonding belt that is in pressure contact with the outer circumferential surface of the glass tube and runs in the same direction as the glass tube at the same speed as the circumferential speed of the outer circumferential surface in synchronization with the glass tube. A polymer of heat-sensitive stencil paper and a manuscript supplied between the pressure belt and the pressure belt is pressed against the outer peripheral surface of the glass tube, and is transferred along the outer peripheral surface through the glass tube. The polymer is continuously irradiated with a light beam to photothermally perforate the stencil paper, and while performing perforation stencil making in this way, one end of the stencil paper is latched to the outer peripheral surface of the cylindrical plate cylinder. The stencil paper is pulled by the rotation of the cylindrical plate cylinder and wrapped around the outer circumferential surface of the cylindrical plate cylinder.
This is shown in Publication No.-13106.

Problems to be Solved by the Invention The above-mentioned stencil-type plate-making and printing apparatus has the excellent advantage of being able to perform plate-making, plate-setting, and subsequent stencil printing in rapid succession. In a plate-type plate-making printing device, the polymer of the stencil paper and the manuscript is conveyed while being pressed against a glass tube by a pressure belt and the stencil is made continuously, so the stencil paper tends to wrinkle, and once If slight wrinkles occur in the stencil paper, as the stencil paper progresses, the wrinkles gradually expand and extend in the direction of conveyance, resulting in so-called vertical wrinkles, which prevent correct stencil making.
Wrinkles in the stencil paper may also occur due to differences in the paper quality and moisture content of the manuscript, or due to subtle differences in the way the manuscript is inserted, resulting in contact with the manuscript as it is inserted. In addition, the stencil paper is often wrapped around the outer circumferential surface of the cylindrical plate cylinder with the wrinkles remaining without eliminating the wrinkles generated during the plate making process, so that the stencil paper is not properly attached to the cylindrical plate cylinder. It won't happen. In particular, the heat-sensitive stencil paper used in thermal perforation is extremely thin and soft, and in order to perform plate-making and printing in a continuous process in the stencil-type stencil printing machine, reinforcing paper pieces and mounts (backing paper) are used in the head section. ), and when the stencil paper alone and the original is pressed against a surface such as the outer circumferential surface of a glass tube for plate making, wrinkles will almost always occur, and these wrinkles will form on the outer circumferential surface of the glass tube. The wrinkles do not disappear unless the pressed state is released, and these wrinkles grow into larger wrinkles as the stencil paper is conveyed while being pressed against the outer peripheral surface of the glass tube.

In order to make a good stencil paper with high resolution using thermal perforation, it is preferable to use a large pressure force to press the stencil paper and the original against each other. Moreover, even if a large pressure force can be obtained in such a plate-making device, the frictional resistance between the polymer, the glass tube, and the pressure belt increases as the pressure force increases, resulting in the above-mentioned problems. The appearance of wrinkles becomes more noticeable.

In addition, in the above-mentioned stencil printing device,
In order to wrap the stencil paper that has been made into a stencil onto the outer circumferential surface of a cylindrical plate cylinder without horizontal wrinkles, the stencil paper that is forcibly fed out from the stencil making means must be conveyed from the stencil making means to the cylindrical printing cylinder. In order to prevent horizontal wrinkles from occurring during the process, it is necessary to apply tension to the stencil paper while rotating the cylindrical plate cylinder, which is fixed at one end of the stencil paper. However, when tension is applied to the stencil paper between the plate-making means and the cylindrical plate cylinder, there is no room to eliminate the vertical wrinkles that occur in the stencil paper during the plate-making process.
These vertical wrinkles become larger and larger.

In view of the drawbacks of the conventional stencil printing apparatus as described above, the present invention has been developed to prevent large wrinkles from occurring in the stencil paper even when a thin and soft stencil paper is subjected to perforation stencil making by pressure exposure. The purpose of the present invention is to provide a stencil-type plate-making and printing device that can mount a stencil paper onto a cylindrical plate cylinder without wrinkles, and can perform plate-making and printing in a continuous operation without causing plate-making or printing defects. .

Means for Solving the Problems The stencil printing apparatus according to the present invention includes an exposure stage having a light transmitting plate that is irradiated with light from a light source device, a pressing plate facing the light transmitting plate, and the light transmitting plate. and driving means for driving at least one of the pressing plates to selectively achieve a state in which the two are pressed against each other and a state in which the two are separated from each other. The plate-making means is provided for photothermally perforating a polymer of thermal stencil paper and original sandwiched between the two when the state is reached, by irradiating light through the light transmitting plate, and the plate-making means When the light transmitting plate and the pressing plate are in a state where they are separated from each other, the stencil sheet, whose one end is already secured to the cylindrical plate cylinder by the clamping means, is moved by the force applied to the cylindrical plate cylinder by the plate making means. It is characterized in that the rotational drive of the cylindrical plate cylinder is controlled by a control means in synchronization with the operation of the plate making means so as to pull out the plate further and wrap it around the outer peripheral surface of the cylindrical plate cylinder.

Functions and Effects of the Invention The light transmitting plate of the plate-making means is configured in a rectangular shape having the width dimension of the manuscript, and the plate-making means performs plate-making of one sheet of stencil paper by dividing it into multiple steps in the longitudinal direction. The light transmitting plate and the pressing plate are separated from each other each time one exposure is completed with the stencil paper and the original pressed together by the light transmitting plate and the pressing plate, and the stencil paper and the original are pressed together. The crimping is released, and in this state, the stencil paper and the original are transferred. Since the stencil paper and the original are stationary at the time of crimping, there is no risk of wrinkles occurring at this time, and even if the stencil paper and the original are slightly wrinkled. Even if some wrinkles occur, the pressure between the stencil paper and the original is released each time one exposure is completed, so the wrinkles are eliminated at this time, and the wrinkles do not grow. Thus, large vertical wrinkles do not occur in the stencil paper or the manuscript, and the stencil paper is not wrapped around the outer peripheral surface of the cylindrical plate cylinder with wrinkles remaining.

In the process of wrapping the stencil paper around the outer circumferential surface of the cylindrical plate cylinder, the light transmitting plate and the pressure plate are separated from each other, the pressure bond between the stencil paper and the original is released, and the stencil paper can move freely. This operation is carried out by rotating a cylindrical plate cylinder that has one end of the stencil paper fixed at the stencil, so this work can be done without creating horizontal wrinkles in the stencil paper without applying too much tension to the stencil paper. As a result, vertical wrinkles do not occur in the stencil paper due to the tension applied to the stencil paper when the stencil paper is wound, and the stencil paper is in good condition with no vertical or horizontal wrinkles on the outer peripheral surface of the cylindrical plate cylinder. wrapped around.

In addition, since the stencil paper and the original are pressed together in a stationary state using a light transmitting plate and a pressing plate, this is compared to the case where the stencil paper and the original are moved and crimped together using a glass tube and a crimping belt. A much larger pressing force can be easily obtained, and perforation plate making with high resolution can be performed.

Embodiments Hereinafter, the present invention will be described in detail with reference to 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 printing device according to the present invention has one cabinet assembly 1.
It includes a stencil printing means and a stencil making means for stencil printing. The cabinet assembly 1 has a document insertion table 2 and a document insertion slot 3 on one side, and has a paper discharge table 4 below the document insertion table 2 for receiving printed paper. The upper surface of the cabinet assembly 1 is opened and closed by an upper cover 11.
1 has the original document insertion port 3 and the document discharge port 5. An operation panel 6 is provided on the front upper surface of the cabinet assembly 1, and the operation panel 6 includes a start button 7, a keyboard 8 for setting the number of prints, a print density adjustment dial 9, and the like. The cabinet assembly 1 also has a paper feed tray 10 on the side opposite to the paper discharge tray 4 for storing printing sheets in a stacked manner.

FIGS. 2 and 3 each show the internal structure of the stencil-type stencil printing apparatus according to the present invention shown in FIG. 1. FIG. In these figures, 20 indicates a cylindrical plate cylinder, and the cylindrical plate cylinder 20 has its own central axis 2.
It is rotatably supported around 0c by a machine frame (not shown). The cylindrical plate cylinder 20 has a porous structure and has a clamping means 21 on its outer periphery, and the clamping means is adapted to selectively lock one end of the stencil paper.

The clamping means 21 includes a strip-shaped permanent magnet plate 22 fixed to the outer peripheral surface of the cylindrical plate cylinder 20 and extending along one generatrix thereof, and a shaft extending along the axial direction of the cylindrical plate cylinder 20. 23, and a movable clamp piece 24 pivotally supported by. Attached to one end of the shaft 23 is a gear 25 which selects a drive gear 27 supported at one end of a lever 26 when the cylindrical plate cylinder 20 is in the initial rotational position as shown. It's starting to fit perfectly. The lever 26 is pivoted to a machine frame (not shown) by a pivot 28, and when the solenoid 29 is not energized, it is biased counterclockwise in the figure by the spring force of a spring 30, and the drive gear 27 is pulled away from the gear 25, whereas the solenoid 29
When the drive gear 2 is energized, the drive gear 2 rotates clockwise in the figure against the spring force of the spring 30.
7 is the gear 2 of the cylindrical plate cylinder 20 in the initial rotation position.
It is designed to mesh with 5. Drive gear 27
is selectively rotationally driven by an electric motor 31 attached to the lever 26, which rotates the gear 25, so that the clamp piece 24 is attracted to the permanent magnet plate 22 as shown in FIG. the clamp position, the clamp standby position which is spaced from the permanent magnet plate 22 and inclined to form an angle with the permanent magnet plate 22, and the fully open position, which is rotated approximately 180 degrees counterclockwise from the clamp position in the figure. It is designed to be rotationally driven.

The cylindrical plate cylinder 20 is drivingly connected to a sprocket 34a disposed coaxially with its central axis 20c, which sprocket is drivingly connected to a drive sprocket 34b of an electric motor 33 by an endless chain 32. With this power transmission device, the cylindrical plate cylinder 20 is selectively rotated in divided rotations or continuously rotated in a counterclockwise direction in the figure by an electric motor 33.

A printing ink supply means 35 is provided inside the cylindrical plate cylinder 20 . Printing ink supply means 35
The ink supply roller 36 is disposed so that its outer circumferential surface contacts the lower inner circumferential surface of the cylindrical plate cylinder 20 and is rotatable around its own central axis 37, and The ink supply roller 36 is rotated in synchronization with the rotation of the cylindrical plate cylinder 20 in synchronization with the rotation of the cylindrical plate cylinder 20. By being rotationally driven in the direction,
The printing ink in the ink reservoir A is supplied to the inner peripheral surface of the cylindrical plate cylinder 20. That is, as the ink supply roller 36 rotates, the printing ink in the ink reservoir A flows between the roller and the doctor rod 38.
The printing ink layer is metered to form a uniform thickness printing ink layer on the outer circumferential surface of the ink supply roller 36, and this printing ink layer is applied to the cylindrical plate cylinder 20 as the ink supply roller 36 rotates. is supplied to the inner circumferential surface of the printer and used for printing.

If a more detailed explanation of the above-mentioned printing ink supply means 35 is required, please refer to Utility Model Application No. 59-004425 (Utility Model Application No. 60-26867) filed by the same applicant as the applicant of the present application, No. 55-126934 (Unexamined Japanese Patent Publication No. 1983)
−51483, Special Publication No. 1983-28672), Special Patent Application No. 1983-
Please refer to the specification and drawings of No. 122589 (Japanese Unexamined Patent Publication No. 59-12893).

A press roller 40 is provided outside the cylindrical plate cylinder 20 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 supported by a lever 42 by a pivot shaft 41, and the lever 42 is pivotally supported by a pivot shaft 43 on a machine frame (not shown). Lever 4
2 pivotally supports a cam follower roller 44, and this cam follower roller 44 is pressed by the spring force of a spring 47 against a cam 46 attached to a camshaft 45, and during the printing process, the camshaft 45 is cylindrical. Plate cylinder 2
By being rotationally driven in synchronization with the rotation of the lever 42, the lever 42 cooperates with the cam 46 to reciprocate around the pivot shaft 43. The press roller 40 is selectively pressed against the outer circumferential surface of the cylindrical plate cylinder 20 by reciprocating rotation of the lever 42, and the printing paper sent between the press roller 40 and the outer circumferential surface of the cylindrical plate cylinder 20 is pressed against the outer circumferential surface of the cylindrical plate cylinder 20. Collision with the clamping means 21 is avoided by pressing it against the outer peripheral surface of the cylindrical plate cylinder 20 and moving away from the outer peripheral surface of the cylindrical plate cylinder 20 as shown. In the plate discharge and plate loading processes, the press roller 40 is held at a position away from the outer circumferential surface of the cylindrical plate cylinder 20 as shown.

The paper feed tray 10 is provided substantially horizontally and is movable in the vertical direction with respect to a machine frame (not shown), and a pinion 48 is provided on the paper feed tray. The pinion 48 has a rack 4 extending in the vertical direction.
9 and is selectively rotationally driven by an electric motor (not shown) mounted on the paper feed tray 10.
By rotating while engaged with the rack 49, the paper feed table 10 is moved up and down.
The vertical movement of the paper feed tray 10 is performed according to the amount of printing paper P stacked on the paper feed tray 10, and the paper feed tray 10 rises as the amount of printing paper P decreases. I'm starting to do that.

A front barrier plate 50 is fixedly arranged in front of the paper feed tray 10, and the front barrier plate regulates the front end position of the printing paper P placed on the paper feed tray 10, and It serves the purpose of aligning the A paper feed roller 60 is rotatably provided above the front wall plate 50 by a shaft 59. The paper feed roller 60 is made of a material with a relatively large coefficient of friction, such as rubber or a rubber-like product, and is rotated counterclockwise in the figure by an electric motor (not shown) each time a sheet of printing paper is sent out. It works together with a paper sorting pad 61 to take out the printing papers P on the paper feed tray 10 one by one starting from the topmost one.

A registration roller device 6 is located in front of the paper feed roller 60 in the paper feed direction, that is, on the side of the cylindrical plate cylinder 20.
2 is provided. The registration roller device 62 has a pair of driving rollers 63 and driven rollers 64, and these rollers stop rotating 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 fed from the paper feed table 10 by a paper feed roller 60 while being guided by guide plates 65 and 66, is fed between the cylindrical plate cylinder 20 and the press roller 40. .

A peeling claw 67 for peeling the printing paper from the cylindrical plate cylinder 20 is provided on the outside of the cylindrical plate cylinder 20 at a position opposite to the registration roller device 60.

The cylindrical plate cylinder 20 is moved by the 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 is pressed by the press roller 40 against the stencil sheet mounted on the outer peripheral surface of the cylindrical plate cylinder 20. Printing ink is transferred through the perforations of the stencil paper, and a printed image is formed 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 flies to the right in the figure due to the inertial force given by the rotation of the cylindrical plate cylinder 20, and falls onto the paper discharge tray 4. 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 10. Plate making device 7
0 is an upward opening type box 71 and the box 7
A rectangular glass light transmitting plate 72 attached to the upper part of the box 71 and a light transmitting plate 7 provided inside the box 71
It has an exposure stage 74 having a light source device 73 that irradiates a light beam toward 2, and a press plate 75 facing the light transmitting plate 72, and the mutually opposing surfaces of the light transmitting plate 72 and the press plate 75 are They are parallel to each other and almost horizontal, and a cushion member 7 made of sponge is provided on the surface of the pressing plate 75 facing the light transmitting plate 72.
6 is installed. The press plate 75 is fixed to the upper cover 11, and the exposure stage 74 is provided on a machine frame (not shown) so as to be movable in the vertical direction. A cam fluoro rod 77 is provided at the bottom of the exposure stage 74.
is engaged with the cam 78 by its own weight. cam 78
is drivingly connected to an electric motor 79, and is selectively rotationally driven in the clockwise and counterclockwise directions in the figure by the electric motor. This cam 7
8, the exposure stage 74 is moved to the open position (lowered position) where the light transmitting plate 72 is separated from the cushion member 76 of the pressing plate 75, as shown in FIG.
As shown in FIG. 3, the light transmitting plate 72 is driven up and down between the pressed position (raised position) where the light transmitting plate 72 is pressed against the cushion member 76.

The basic idea of the plate-making means 70 is based on the patent application filed in 1983.
97944 (Japanese Unexamined Patent Publication No. 56-21120), and its improvement was published in Japanese Patent Application No. 55-50078 (Unexamined Japanese Patent Application No. 56-146131).
It has been proposed by the same applicant as the applicant of this application.

A stencil sheet storage section 80 is provided below the document insertion table 2 on the side opposite to the cylindrical plate cylinder 20 of the plate making means 70.
A continuous sheet of stencil paper S is wound around a bobbin 81 and stored in the storage section 80 in the form of a roll. The upper surface of the light transmitting plate 72 in the open position and the upper surface of the document insertion table 2 are at approximately the same height position, and the light transmitting plate 72 and the document insertion table 2
A free roller 82 is rotatably provided in a machine frame (not shown) between the two. Upper cover 1
1 is attached to a lever 84 by 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 an engagement piece 86
is engaged with a push-up lever 88 attached to the machine frame (not shown) by a pivot 87,
When the solenoid 90 is not energized, the lever 88 is in the rotational position as shown in FIG. When the solenoid 90 is energized, the solenoid rotates counterclockwise in the figure against the spring force of the spring 89, and the third
As shown in the figure, it is spaced apart from the engaging piece 86 and allows the weight roller 85 to freely engage on the free roller 82.

A light transmission type optical sensor 107 is provided near the entrance of the plate making means 70 to detect the presence or absence of the original O.

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 has a pair of upper and lower rollers 92 and 93, and the lower roller 92 is rotatably supported by a machine frame (not shown) and is selectively rotated counterclockwise in the figure by an electric motor 94. The upper roller 93 is rotatably mounted on the upper cover 11. Although not shown in the power transmission path between the lower roller 92 and the electric motor 94, it is noted that the lower roller 92 freely rotates counterclockwise in the figure with a predetermined rotational resistance. A one-way slip clutch is provided to allow for slippage. Lower roller 92 and upper roller 93
The engaging portion with the light transmitting plate 72 is located at a lower position than the upper surface of the light transmitting plate 72, so that the stencil paper S that has passed over the light transmitting plate 72 passes through the stencil paper-original separation claw 95 attached to the exposure stage 74 and is transferred to the lower roller. 92 and the upper roller 93, the separating claw 9
At part 5, it is bent approximately 90 degrees downward as shown in the figure.

A sheet cutter device 96 is provided 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. Sheet cutter device 96
has a rotary blade 97 rotatably attached to a machine frame (not shown) and a fixed blade 98 attached to the upper cover 11, and the rotary blade 97 is connected to an electric motor 99.
The stencil paper S is cut by being selectively rotationally driven by the stencil sheet S. Also, the rotary blade 9
7 and the lower roller 92 are drivingly connected by a belt 118 so that the lower roller 92 rotates as the rotary blade 97 rotates. In addition, the lower roller 92
A one-way 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 rotationally driven by the rotation of the rotary blade 97 .

Guide plates 100 and 101 for guiding the stencil sheet S toward the clamping means 21 of the cylindrical plate cylinder 20 are provided on the side of the cylindrical plate cylinder 20 from the sheet cutter device 96, and the guide plate 100 is provided with a blower fan. 102 is provided. The blower fan 102 is attached to the permanent magnet plate 2 of the cylindrical plate cylinder 20 in the initial rotation position.
Air is blown toward the permanent magnet plate 2 from diagonally above the permanent magnet plate 22, and the tip of the stencil paper S is lightly pressed against the upper surface of the permanent magnet plate 22 by the force of the wind. Due to the action of the blower fan 102, the leading end of the stencil sheet 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 securely holds one end of the stencil sheet S. It will be possible to clamp it.

The upper cover 11 is provided with a reflective optical sensor 103 that detects when the leading edge of the stencil paper S has arrived on the permanent magnet plate 22 . Further, on the upper cover 11, there is a guide plate 105 for guiding the original O that has passed through the plate-making means 70 toward the original discharge port 5.
and 106 are provided.

The upper cover 11 is pivoted to a machine frame (not shown) by a pivot 12, and has two positions: a closed position as shown in the figure, and an open position rotated approximately 90 degrees counterclockwise from the closed position in the figure. When in the closed position, the locking means 13
It is adapted to be selectively locked in its closed position by.

On the side of the cylindrical plate cylinder 20 opposite to the plate making means 70, there is a stencil sheet S attached to the cylindrical plate cylinder 20.
A stencil paper removing means 110 is provided for removing the stencil paper from the cylindrical plate cylinder 20 after printing is completed. The stencil paper removing means 110 has two upper and lower support shafts 111 and 112 extending along the axial direction of the cylindrical plate cylinder 20 on one side of the cylindrical plate cylinder 20,
These support shafts each have gears 113 that mesh with each other.
and 114 are provided in plural numbers spaced apart from each other in the axial direction. The support shaft 111 is an electric motor 115
The motor 115 is selectively driven clockwise in the figure by an electric motor 115. Further, each of the support shafts 111 and 112 is provided with a rubber-like elastic tapping piece 11 made of rubber or rubber-like material.
6 and 117 are installed. The stencil paper removing device 110 also has a stripping claw 120 that is pivotally supported by a shaft 119 to a machine frame (not shown), and this stripping claw 120 is connected to a solenoid 121
When no current is applied to the tip 120a of the spring 122, the spring force of the spring 122 causes the tip 120a to
is at a rotational position sufficiently far away from the outer peripheral surface of the cylindrical plate cylinder 20, and when the solenoid 121 is energized, it rotates clockwise in the figure due to the spring force of the spring 122. Tip part 120a
is located very close to the outer peripheral surface of the cylindrical plate cylinder 20.

The stencil paper removing means 110 is connected to the upper guide plate 123.
and a lower guide plate 124, and a peeling claw 1.
The stencil paper S peeled off from the cylindrical plate cylinder 20 by the gears 113 and 114 is fed between the upper guide plate 123 and the lower guide plate 124 by the transverse feed device 125, and then the stencil paper S is peeled off from the cylindrical plate cylinder 20 by the transverse feed device 125. The paper is sent to the back of the solid body 1 and dropped into a stencil receiving box (not shown) attached to the back of the cabinet assembly 1. The lateral feed device 125 includes a plurality of rubber rollers 127 that are supported by a support shaft 126 and are rotatable, and a metal roller 128 with serrations that engages with the rubber rollers.
8 is drivingly connected to an electric motor 132 by a shaft 129 and gears 130 and 131, and is selectively rotationally driven by the electric motor.

The above-mentioned stencil paper removing device 110 is disclosed in Utility Application No. 54-179595 (Japanese Utility Model Publication No. 60-23176) and Japanese Patent Application No. 55-17391 (Japanese Patent Publication No. 59-3275) filed by the same applicant as the present applicant. , Utility Application No. 1983-63378
164765), and if a more detailed explanation is required, please refer to the specifications and drawings of these applications.

A control device 140 is provided within the cabinet assembly 1. The control device 140 is an electric type including a microcomputer, and is adapted to control the operation of the plurality of electric motors and solenoids described above based on commands given from the operation panel 6 according to a predetermined program. Control of the electric motor 33 for driving the cylindrical plate cylinder is also performed by the control device 140, and the electric motor 33 is driven to continuously rotate the cylindrical plate cylinder 20 during the printing process, but in the plate making process. In synchronization with the operation of the plate making means 70, the exposure stage 74 is in the lowered position and the light transmitting plate 72
When the press plate 75 and the press plate 75 are in a state where they are separated from each other, the cylindrical plate cylinder 20 is driven to be dividedly rotated by a predetermined rotation angle.

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

When using the stencil printing apparatus, first open the upper cover 11, attach the stencil paper roll to the stencil paper storage section 80, pull out the tip of the stencil paper S of this stencil paper roll from the storage section 80, and then move the stencil paper roll to the stencil paper storage section 80. , the light transmitting plate 72 , the lower roller 92 , and the rotary blade 97 , and the tip thereof is passed over the guide plate 10 .
Position it above 1. Incidentally, an index line indicating the appropriate position of the leading edge of the stencil paper S may be drawn on the upper surface of the guide plate 101, and the stencil paper S can be moved according to this index line.
It is only necessary to position the tip of the This work is performed with the upper cover 11 open,
At this time, the weight roller 85, the pressing plate 75, the upper roller 93, and the fixed blade 98 are lifted upward together with the upper cover 11, so this operation is relatively easily performed.

After the presetting of the stencil sheet S as described above is completed, the upper cover 11 is closed. Upper cover 1
1 is closed, the stencil paper S is moved to the lower roller 92.
and the upper roller 93.

When printing a new document O, print the document O.
Place the document face down on the document insertion table 2 by hand, and slide it on the document insertion table 3 into the document insertion slot 3.
Insert it toward the plate-making device 70. At this time, the solenoid 90 is not energized and the weight roller 85 is in a position separated from the free roller 82, so the original O passes through this roller portion and is placed on the stencil sheet S that has already been preset. is inserted between the light transmitting plate 72 and the pressing plate 75 of the exposure stage 74 which is in the lowered position. The insertion of the original O may be performed until the corresponding scale of the original size scale provided on the original insertion table 2 matches the rear end of the original O. When the original is inserted as described above, the optical sensor 107 senses that the original O has been inserted.

When the start button 7 is operated after the original has been inserted as described above, the solenoid 90 is energized, the weight roller 85 descends, and the stencil sheet S is moved by this roller and the free roller 82.
and manuscript O are interposed.

At the same time, the solenoid 29 is energized, the drive gear 27 meshes with the gear 25 of the cylindrical plate cylinder 20 in the initial rotation position, and the electric motor 31 drives the drive gear 27 clockwise in the figure. By doing this, the used stencil paper used in the previous printing operation and attached to the outer peripheral surface of the cylindrical plate cylinder 20 is clamped in the clamp position shown in FIG. Clamp piece 24
moves to the fully open position, and the stencil sheet is unlocked. When the clamp piece 24 is in the fully open position, the electric motor 31 is stopped and the solenoid 29 is
energization is stopped, and the drive gear 27 is switched to the gear 2.
Move away from 5. Next, the stencil paper removing device 110
is activated, and the cylindrical plate cylinder 20 is rotated once at a low speed by the electric motor 33, whereby the stencil paper is removed from the cylindrical plate cylinder 20, so-called stencil discharge is performed, and this stencil paper is are discarded in a stencil paper storage box (not shown).

When the plate ejection as described above is completed, the solenoid 29
is energized, the drive gear 27 meshes with the gear 25 of the cylindrical plate cylinder at the initial rotation position, and the drive gear 27 is driven counterclockwise in the figure by the electric motor 31, thereby causing the clamp piece 24 to rotate. moves from the fully open position to the clamp standby position. When the clamp piece 24 is located at the clamp standby position, the electric motor 31 is stopped. The state at this time is shown in FIG.

Next, the electric motor 94 is started, and the lower roller 92 and the upper roller 93 transport the leading edge of the stencil sheet toward the clamping means 21 of the cylindrical plate cylinder 20. When the leading edge of the stencil 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 roller 92 is stopped.
Conveyance of the stencil paper S is stopped.

Next, the electric motor 31 is driven, and the driving gear 27 rotates counterclockwise in the figure, so that the clamp piece 24 is located at the clamp position, and the tip of the stencil paper S is connected to the permanent magnet plate 22 and the clamp piece 24. It is held in place by the cylindrical plate cylinder 20. Clamp piece 2
4 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 separated from the gear 25.

Next, the electric motor 79 is driven, and the cam 78 rotates clockwise in the figure, so that the exposure stage 74 is raised and placed between the light transmitting plate 72 and the pressing plate 75 between the stencil S and the original O. Part is light transmitting plate 7
2 and the cushion member 76 of the pressing plate 75 and are pressed together, and in this pressed state, the light source device 73 emits light, and from this, the light beam passes through the light transmission plate 72 and overlaps the stencil sheet S and original O. Said portion of the coalescence is irradiated. By this light irradiation, the portion of the stencil paper S is thermally perforated. When this one exposure is completed, the rotation stage 74 is lowered as the cam 78 rotates, the light transmitting plate 72 is separated from the pressing plate 75, and the pressure bond between the stencil paper S and the original O is released.

Next, the electric motor 33 is started and the cylindrical plate cylinder 20
rotates counterclockwise in the figure. The stencil paper S is pulled by this rotation of the cylindrical plate cylinder 20, and the tip portion of the stencil paper S is wrapped around the outer peripheral surface of the cylindrical plate cylinder 20, and the perforated portion as described above is pressed against the light transmitting plate 72. It is pulled out from between the plate 75,
Between the light transmission plate 72 and the pressing plate 75, the stencil sheet S and the next portion of the original O are located. At this time, the lower roller 92 is not rotationally driven, but is driven to rotate counterclockwise in the figure with a predetermined rotational resistance as the stencil sheet S moves due to the action of the one-way sliding clutch. A predetermined tension is obtained in the stencil paper S between the lower roller 92 and the cylindrical plate cylinder 20, and the stencil paper is mounted on the cylindrical plate cylinder 20 without horizontal wrinkles.

As the stencil paper S is transported, the original O placed on the stencil paper moves together with the original O placed on the stencil paper while being stuck to the stencil paper by the above-mentioned thermal perforation. When the document is pulled out from the gap, it is bent downward at a nearly right angle as shown in the figure by the separation claw 95, whereas the document moves straight due to its own strength and is guided by guide plates 105 and 106 to be ejected. By heading toward the exit 5, the original O and the stencil paper S in which exposure (plate making) has been completed are separated and separated.

The cylindrical plate cylinder 20 is divided and rotated by an angle corresponding to a circumferential dimension substantially equal to one exposure width,
When this divided rotation of the predetermined angle is performed, the electric motor 33
is stopped, and the rotation of the cylindrical plate cylinder 20 is stopped.
At the time when the rotation of the cylindrical plate cylinder 20 stops and the movement of the stencil paper S stops accordingly, the cam 78 is turned on again.
, the exposure stage 74 is raised and the stencil paper S
and the next portion of the original O are sandwiched between the light transmitting plate 72 and the cushion member 76 of the pressing plate 75 and pressed together, and then the light source device 73 emits light to perform a second exposure, and the stencil sheet is exposed to light for the second time. Thermal drilling of S is performed. The state at this time is shown in FIG. Thereafter, as described above, when the stencil paper S and the original O are released, the stencil paper S is moved and plated by the divided rotation of the cylindrical plate cylinder 20, and the stencil paper S and the original O are pressed together. Thermal perforation performed by exposure to light at the same time is repeated alternately.

Plate making and plate setting proceed by the movement of the stencil paper S through multiple exposures and divided rotation of the cylindrical plate cylinder 20,
When the rear end of the document O is detected by the optical sensor 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 motor 79 is stopped when the pressure plate 72 and the pressing plate 75 are separated and the stencil sheet S and the original O are no longer pressed together. After this, the cylindrical plate cylinder 20 continuously rotates,
The stencil paper S is wound around the cylindrical plate cylinder 20. Then, when the cylindrical plate cylinder 20 rotates by a predetermined rotation angle (approximately 330 degrees) from the initial rotation position,
The electric motor 99 is started, and the rotary blade 97 rotates once to cut the stencil paper S. After that, the cylindrical plate cylinder 20 continues to rotate once at a low speed, and the paper feeding means and press roller means are rotated. As a result of this operation, the winding of the stencil paper S around the outer peripheral surface of the cylindrical plate cylinder 20, so-called plate attachment, is completed, and one sheet of trial printing is performed.

The stencil paper S cut by the sheet cutter device 96 and placed on the side of the sheet storage section 80 is fed by the rotation of the lower roller 92 in accordance with one revolution of the rotary blade 97, and its leading end is connected to the board 100. 101
It is held between these and is prevented from hanging downward.

When the stencil printing and trial printing of the stencil paper S are completed as described above, the cylindrical plate cylinder 20 is continuously rotated, and the stencil printing described above is started.

If the start button 7 is operated in a state where no original is inserted into the plate-making means 70 from the original insertion slot 3 and the insertion of the original is not detected by the optical sensor 107, the current cylindrical Plate cylinder 2
The stencil printing using the stencil paper loaded in the stencil sheet 0 starts.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited thereto, and various embodiments are possible within the scope of the present invention. It will be clear to those skilled in the art.

[Brief explanation of the drawing]

FIG. 1 is an external view showing one embodiment of a stencil-type plate-making and printing apparatus according to the present invention, and FIGS. 2 and 3 are schematic diagrams showing the internal structure of the stencil-type plate-making and printing apparatus according to the present invention, respectively. DESCRIPTION OF SYMBOLS 1... Cabinet assembly, 2... Document insertion table, 3... Document insertion slot, 4... Paper output tray, 5... Original output port, 6... Control panel, 7... Start button, 8... Keyboard for setting the number of print copies, 9...Print density adjustment dial, 10...Paper feed tray, 11...
Upper cover, 12... Pivot, 13... Locking means, 20... Cylindrical plate cylinder, 21... Clamping means, 22... Permanent magnet plate, 23... Shaft, 24...
Movable clamp piece, 25... Gear, 26... Lever, 27... Drive gear, 28... Pivot, 29...
Solenoid, 30... Spring, 31... Electric motor, 3
2...Endless chain, 33...Electric motor, 34a,
34b... Drive sprocket, 35... Printing ink supply means, 36... Ink supply roller, 37...
... Central shaft, 38 ... Doctor rod, 40 ... Press roller, 41 ... Pivot, 42 ... Lever, 4
3...Axis, 44...Camfoil roller, 45
...Camshaft, 46...Cam, 47...Spring, 48
... Pinion, 49 ... Rack, 50 ... Front wall plate, 59 ... Shaft, 60 ... Paper feed roller, 61 ...
...paper handling pad, 62...registration roller device,
63... Drive roller, 64... Followed roller, 6
5, 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 fluoro rod, 78... cam, 79... electric motor, 80... stencil sheet storage section, 81... bobbin, 82... free roller,
83... Pivot, 84... Lever, 85... Weight roller, 86... Engagement piece, 87... Pivot, 88
... Lever, 89 ... Spring, 90 ... Solenoid, 91 ... Feed roller device, 92 ... Lower roller, 93 ... Upper roller, 94 ... Electric motor, 95
...Memory paper-original separation claw, 96...Sheet cutter device, 97...Rotary blade, 98...Fixed blade, 99
...Electric motor, 100, 101 ... Information board, 102
...Blower fan, 103...Light sensor, 105,
106... Information board, 107... Optical sensor, 110
...Memory paper removal means, 111, 112... Support shaft, 113, 114... Gear, 115... Electric motor, 116, 117... Beating piece, 118... Belt, 119... Pivot, 120... Stripping nails, 12
1... Solenoid, 122... Spring, 123...
Upper guide plate, 124...Lower guide plate, 125...
Transverse feed device, 126... Support shaft, 127... Rubber roller, 128... Metal roller with serrations,
129...Axle, 130, 131...Gear, 132
...Electric motor, 140...Control device.

Claims (1)

[Claims for Utility Model Registration] A cylindrical plate cylinder with a porous structure having a clamping means for locking one end of a stencil paper on its outer peripheral surface; a plate cylinder driving means for rotationally driving the cylindrical plate cylinder; and the cylinder. printing ink supply means for supplying printing ink to the inner circumferential surface of the cylindrical plate cylinder; press roller means for pressing printing paper toward the outer circumferential surface of the cylindrical plate cylinder; and the cylindrical plate cylinder and the press roller means. an exposure stage having a light transmitting plate that is irradiated with light from a light source device, a press plate facing the light transmitting plate, and a combination of the light transmitting plate and the press plate. a driving means for driving at least one of the two to selectively achieve a state in which the two are pressed against each other and a state in which the two are separated from each other; plate-making means for perforating the stencil paper by irradiating a polymer of heat-sensitive stencil paper and a manuscript sandwiched between the two through the light-transmitting plate; a paper storage unit for supplying heat-sensitive stencil paper to the plate-making means; a sheet cutter device for cutting the heat-sensitive stencil paper into a predetermined length; and a roller driven by an electric motor via a one-way sliding clutch. a transfer means for transferring a leading end of the stencil paper that has passed through the plate making means to the clamping means by energizing the electric motor; and one end of the stencil paper is latched to the cylindrical plate cylinder by the clamping means. Later, when the light transmitting plate and the pressing plate of the plate making means are in a state of being separated from each other, the stencil paper is moved from the plate making means by rotation of the cylindrical plate cylinder without energizing the electric motor. and a control means for controlling the rotational drive of the cylindrical plate cylinder by the plate cylinder driving means in synchronization with the operation of the plate making means so as to be pulled out and wrapped around the outer peripheral surface of the cylindrical plate cylinder. Plate-type plate-making printing equipment.