JP2002103769A - Printing equipment and stencil printing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize and simplify equipment and reduce its cost or the like by a method wherein treatments of jammings of a stencil paper and of a printing paper developed on a plate cylinder side and treatments of jammings, the positions of which are not clear, can be easily performed and, at the same time, treatments of jammings on the plate cylinder side are made possible without employing a drawing plate cylinder. SOLUTION: A plate cylinder is provided in an equipment main body 10. Further, a copy reading unit 11 and a plate delivering unit 50, which open and close an upper opening part 10a, which occupies the upper position of the plate cylinder, in the equipment main body 10. The copy reading unit 11 is opened and closed through its rotary shifting about the end part of the equipment main body 10. The plate delivering unit 50 is opened and closed through its linear shifting from the middle of the upper opening part 10a to the direction towards its end part. The copy reading unit 11 and the plate delivering units 50 are openingly and closingly shifted in directions opposite to each other so as to open the center space of the upper opening part 10a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to printing in which printing is performed by wrapping a printing paper around a printing drum, and directly or indirectly transferring an ink image of the printing paper rotating with the rotation of the printing drum to a printing medium. The present invention relates to an apparatus and a stencil printing apparatus.

[0002]

2. Description of the Related Art For example, a stencil printing apparatus includes a document reading section for reading image data of a document to be printed, a plate making section for perforating a stencil sheet based on the image data read by the document reading section, and a stencil making section. A printing unit that mounts the stencil sheet made on the plate on the plate cylinder, conveys the printing paper while applying printing pressure to the rotating plate cylinder, and transfers the ink image to the printing paper;
The printing unit includes a paper feeding unit that feeds printing paper, a paper discharging unit that discharges the printing paper printed by the printing unit, and a plate discharging unit that removes the stencil sheet mounted on the plate cylinder. Such a stencil printing apparatus needs to be configured so as to be capable of replenishing the stencil paper and jamming the stencil paper and the printing paper, and a conventional example thereof is shown in FIGS. 6 and 7. FIG.

FIG. 6 is an overall perspective view of a stencil printing apparatus, and FIG. 7 is a partial perspective view of the stencil printing apparatus viewed from above. 6 and 7, on the upper surface side of the apparatus main body 100, two opening / closing units of a document reading unit 101 and a mounting table unit 102 are provided, and the document reading unit 101 and the mounting table unit 102 are rotated by the apparatus main body 100, respectively. It is freely supported.

The document reading unit 101 has a closed position for closing the upper opening 100a and an open position for opening the upper opening 100a around the center of the upper opening 100a in the apparatus main body 100 as a center of rotation (FIG. 6 and FIG. (State of FIG. 7)
It is rotatable between and. On the other hand, the mounting table unit 102 also has an upper opening 100a around the center position of the upper opening 100a in the apparatus main body 100.
6 can be freely rotated between a closed position (the state shown in FIG. 6) for closing the upper opening and an open position (the state shown in FIG. 7) for opening the upper opening 100a. Also, the front plate 103 of the apparatus main body 100
Is provided with a plate cylinder opening 103a, and a plate cylinder 104 (shown in FIG. 6) in the apparatus main body 100 is provided so as to be freely drawn out from the plate cylinder opening 103a.

[0006] As shown in FIGS. 6 and 7, when the original reading unit 101 is positioned at the open position, the stencil storage unit 105 and the stencil making unit (not shown) are opened to refill the stencil sheet 106. Stencil paper 10 generated on the stencil making section side
6 can be performed. Further, as shown in FIG. 7, the jamming process of the stencil sheet 106 generated on the stencil discharging unit side can be performed by positioning the mounting table unit 102 at the open position. Also, as shown in FIG. 6, the stencil sheet 106 and the printing paper (not shown) generated around the plate cylinder 104 can be jammed by pulling out the plate cylinder 104 from the apparatus main body 100.

[0006]

However, in the conventional stencil printing apparatus, the heavy stencil cylinder 104 and the heavy stencil cylinder 104 generated around the drum 104 are jammed by the apparatus main body 100 in order to perform a jamming process. When the jamming process is completed, the heavy printing drum 104 that has been pulled out must be returned to the apparatus main body 100 again, so that the jamming process is troublesome.

Also, for example, the jamming position of the stencil sheet 106 may be on the side of the stencil discharging unit,
In the case of the plate making section, the original reading unit 10
1 or the mounting table unit 102 must be opened, or vice versa. Therefore, if the jamming position is not clear, the worst-case opening operation must be performed at three places, and the jamming processing operation may be troublesome.

[0008] Further, the two provided on the upper surface side of the apparatus main body 100
Two opening / closing units (document reading unit 101 and mounting table unit 102) are provided so as to be openable and closable, and plate cylinder 104 is provided.
Must be provided so that the device can be pulled out, which results in an increase in size, complexity, and cost of the device.

In view of the above, the present invention has been made to solve the above-mentioned problem, and it is possible to easily perform a jamming process of a printing plate or printing paper generated on a printing drum side and to make the printing drum freely extractable. It is an object of the present invention to provide a printing apparatus and a stencil printing apparatus that can perform a jamming process on the plate cylinder side without using the apparatus, and can reduce the size, simplification, and cost of the apparatus.

Further, according to the present invention, it is possible to easily perform a jamming process of a printing plate or printing paper generated on the plate cylinder side, a jamming process in which the jamming position is not clear, and a configuration in which the plate cylinder can be freely pulled out. It is another object of the present invention to provide a printing apparatus and a stencil printing apparatus capable of reducing the size, simplification and cost of the apparatus by enabling jamming on the printing drum side.

[0011]

According to a first aspect of the present invention, there is provided a plate cylinder for mounting a plate material in an apparatus main body, and an upper opening in the apparatus main body at a position above the plate cylinder is opened and closed. In a printing apparatus having two opening / closing units provided on the upper surface side of the apparatus main body, the two opening / closing units are provided so as to be freely opened and closed so as to open a space of the upper opening.

In this printing apparatus, by opening the two open / close units provided on the upper surface side of the apparatus main body, the space of the upper opening of the apparatus main body is largely opened. You can face the plate cylinder.

According to a second aspect of the present invention, in the printing apparatus according to the first aspect, one of the opening / closing units is capable of reading the contents of a document as image data, and based on the read image data. A document reading unit having a writing head for writing on a base paper, wherein the writing head is at a pressure contact position of a platen roll at a closed position of the document reading unit, and at a position for closing a base paper accommodating portion of the plate base paper; In the open position of the reading unit, the writing head is located at a position where the platen roll is separated from the platen roll and at a position where the base paper accommodating portion of the plate base paper is opened.

In this printing apparatus, in addition to the operation of the first aspect of the present invention, the original sheet accommodating portion is opened by setting the original reading unit to the open position, and the writing head is separated from the platen roll so that the platen roll or the like can be opened. You can face the plate making section.

[0015] The invention of claim 3 is claim 1 or claim 2.
The printing apparatus according to claim 1, wherein the other one of the opening / closing units is a plate discharging unit configured to remove the plate material attached to the plate cylinder from the plate cylinder and to store the removed plate material. Features.

In this printing apparatus, claim 1 or claim 2
In addition to the operation of the invention, the plate discharge unit can be exposed by setting the plate discharge unit to the open position, and the plate cylinder can be exposed from the open space by setting both the document reading unit and the plate discharge unit to the open position. At the same time, the plate making section and the plate discharging section are opened.

According to a fourth aspect of the present invention, in the printing apparatus according to any one of the first to third aspects, the opening and closing of the document reading unit is a rotational movement about an end of the apparatus main body as a center of rotation. The opening and closing of the plate discharging unit is a linear movement that moves the upper surface of the apparatus main body from the substantially center side toward the end.

In this printing apparatus, in addition to the effects of the first to third aspects of the present invention, the original reading unit is moved to the open position by rotational movement, so that the upper opening of the apparatus main body is widely opened, and the plate discharging unit is opened. Is moved to the open position by the linear movement, so that the components of the plate discharge section do not face upward.

According to a fifth aspect of the present invention, there is provided the stencil printing apparatus, wherein the stencil sheet is a stencil sheet.

In this stencil printing apparatus, the same operation as the first to fourth aspects of the invention can be obtained.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

<Structure of Stencil Printing Apparatus> FIGS. 1 to 5 show an embodiment of the present invention. In this embodiment, the present invention is applied to a stencil printing apparatus. FIG. 1 is an overall schematic configuration diagram of a stencil printing apparatus, FIG. 2 is a cross-sectional view of the stencil printing apparatus showing a state in which both a document reading unit and a plate discharging unit are located at a closed position, and FIG. FIG. 4 is a cross-sectional view of the stencil printing apparatus showing a state where the stencil printing apparatus is located at a position. FIG. FIG. 3 is a perspective view of a main part of the stencil printing machine showing a state where both units are located at an open position.

In FIG. 1, the stencil printing apparatus 1 mainly includes a document reading section 2, a stencil making section 3, a printing section 4, a paper feeding section 5, a paper discharging section 6, and a stencil discharging section 7.

[Document Reading Unit] The document reading unit 2 has a document reading unit 11 which is an opening / closing unit rotatably provided on the upper surface side of the apparatus main body 10. The document reading unit 11 is rotated in a direction indicated by an arrow b in FIG. 2 and in a direction indicated by an arrow c in FIG. 3 around a rotation support shaft 12 provided at an end on the upper surface side of the apparatus main body 10. Then, a closed position (position shown in FIGS. 2 and 4) for closing the upper opening 10a (shown in FIG. 5) in the apparatus main body 10 and an open position (FIGS. 3 and 4) for opening the upper opening 10a in the apparatus main body 10. 5 position).

The document reading section 2 includes a document oblique placement surface 13 provided on the upper surface of the document reading unit 11, a plurality of document transport rolls 14 for transporting the document placed on the document oblique placement surface 13, A roll rotation driving means (not shown) for rotating the document transport roll 14,
And a line image scanner 15 for reading image data of a document conveyed by the scanner. The original placed on the original oblique placement surface 13 is sent by rotation of the original transport roll 14, and the content of the transported original is read by the line image scanner 15.

[Stencil Making Section] The stencil making section 3 is provided in the apparatus main body 10 and accommodates a stencil sheet 18 which is a roll-shaped long stencil sheet and rotatably supports a stencil sheet accommodating section 19. A thermal head 20, which is a writing head disposed downstream of the stencil sheet 18 in the transport direction of the stencil sheet 18 with respect to the stencil container section 19, and is disposed at a position facing the thermal head 20, and drives a main motor (not shown). A platen roll 21 rotated by a force, and a stencil cutter 2 disposed downstream of the thermal head 20 and the platen roll 21 in the transport direction of the stencil sheet 18 to cut the stencil sheet 18
And 2.

The base paper storage unit 19 includes the original reading unit 11.
The upper position is opened by setting to the open position. And
The stencil sheet 18 can be replenished or exchanged from the opened base sheet accommodating section 19. The thermal head 20 is fixed to the document reading unit 11, and the platen roll 21 is supported by the apparatus main body 10. Thermal head 20
The document reading unit 11 is located at a separating position separated from the platen roll 21 when the document reading unit 11 is in the open position, and is located at a pressing position where the document reading unit 11 is pressed against the platen roll 21 when the document reading unit 11 is closed.

Then, the stencil sheet 18 disposed between the thermal head 20 and the platen roll 21 is conveyed by the rotation of the platen roll 21, and each dot of the thermal head 20 is read based on the image data read by the line image scanner 15. The stencil sheet 18 is formed by thermally perforating the stencil sheet 18 to form a stencil image by the heating element selectively generating heat, and the downstream side of the stencil sheet 18 is cut by the stencil cutter 22 to obtain a stencil sheet having a predetermined length. Create 18.

[Printing Section] The printing section 4 is made of an ink-permeable member (for example, a screen) having a porous structure.
A plate cylinder 25 that rotates in the direction of arrow a in FIG. 1 by the driving force of a main motor (not shown);
5 is provided on the outer peripheral wall 25a of the stencil sheet 5 and clamps the leading end of the stencil sheet 18. The plate cylinder 25 is disposed at a substantially central position in the apparatus main body 10, and the plate cylinder 2
The upper position of 5 is the upper opening 10a of the apparatus main body 10. Further, in this embodiment, the plate cylinder 25 is not configured to be able to be pulled out from the inside of the apparatus main body 10 as in the conventional example.

The printing unit 4 includes a squeegee roll 27 disposed inside the plate cylinder 25 and in contact with the inner peripheral surface of the outer peripheral wall 25a, and a doctor disposed on the squeegee roll 27 via a predetermined gap. It has a roll 28 and an ink supply unit 29 for supplying ink to a wedge area between the two rolls 27 and 28. Also, squeegee roll 27
A pressing roll 30 disposed at an outer position facing the outer peripheral wall 25a of the plate cylinder 25, a pressing position (solid line position in FIG. 1) for pressing the pressing roll 30 against the outer peripheral wall 25a of the plate cylinder 25, and a plate A separating position (see FIG. 1) which is separated from the outer peripheral surface of the body 25
Press line (not shown).

The press roll 30 shifts between the press position and the separation position in synchronization with the rotation of the plate cylinder 25 during printing, and when the printing paper 31 conveyed in synchronization with the rotation of the plate cylinder 25 passes. It is configured to be located at the pressing position, and at other times (when the printing paper 31 is not passing) at the separated position.

The leading end of the stencil sheet 18 conveyed from the stencil making section 3 is clamped by the clamp section 26. In this clamped state, the plate cylinder 25 is rotated and the stencil sheet 18 is wound around the outer peripheral wall 25a of the plate cylinder 25. The printing paper 31 which is mounted and conveyed in synchronization with the rotation of the printing drum 25 is pressed against the stencil paper 18 of the printing drum 25 by the pressing roll 30, so that the ink is applied to the printing paper 31 from the perforated portion of the stencil paper 18. The image is transferred and printed.

[Sheet Feeding Unit] The sheet feeding unit 5 includes a sheet feeding table 35 on which the printing paper 31 is stacked, a sabaki plate 38 disposed downstream of the sheet slab 35 in the sheet conveying direction, and a sabaki plate. 38
, A primary paper feed roll 36 which is a paper supply roll for transporting only one of the uppermost printing papers 31 from the paper supply table 35, and a print paper transported by the primary paper supply roll 36. 31 in synchronization with the rotation of the plate cylinder 25,
A guide between the pair of secondary paper feed rolls 37a and 37b transported between the roller 5 and the pressing roller 30 and a guide between the primary paper supply roll 36 and the pair of secondary paper supply rolls 37a and 37b. And a guide member 39 to be used. The primary paper supply roll 36 and the secondary paper supply rolls 37a and 37b rotate at predetermined timings by selectively transmitting the rotation of a main motor (not shown) via each paper supply clutch (not shown). It is configured to be.

[Sheet Discharge Unit] The sheet discharge unit 6 is located at a position downstream of the printing position by the plate cylinder 25 and the pressing roll 30 in the conveying direction.
A paper separating claw portion 40 disposed close to the outer peripheral wall 25a of the
An air blowing means 41 for blowing air between the sheet separating claw portion 40 and the outer peripheral wall 25a of the plate cylinder 25, and the printing paper 31 separated from the outer peripheral wall 25a of the plate cylinder 25 are received, and the received printing paper 31 is transported. Belt transporting means 42, which is a paper transporting means, and a discharge tray which is disposed at the lowermost downstream position of the belt transporting means 42 at a position where the printing paper 31 is dropped and in which the printing papers 31 to be discharged are stacked. 43,
A pair of falling posture correcting side fences 47 and 48 which are arranged on the upper surface of the paper discharge tray 43 and regulate a direction substantially perpendicular to the paper discharge direction of the printing paper 31 to be dropped, and are disposed on the upper surface of the paper discharge tray 43; An end fence 49 for regulating the front surface of the dropped printing paper 31 in the paper discharging direction.

The belt conveying means 42 includes a pair of belt hanging members 44a and 44b, and the pair of belt hanging members 44.
a and a belt 45 hung between 44b and the belt 4
5, a suction box 46 having a plurality of suction holes on the upper surface side, a suction fan (not shown) for sucking the inside of the suction box 46, and the belt hooking member 44a. (Or 44b) through the belt 45
And a belt driving means (not shown) for rotating the drive by a driving force of a main motor (not shown). Each of the fall posture correcting side fences 47 and 48 is slidable in a direction substantially perpendicular to the paper discharge direction, and the width between the two can be freely adjusted, and the end fence 49 is slid in the paper discharge direction. The position on the sheet discharge table 43 can be freely adjusted. Then, the leading end of the printing paper 18 that has passed the printing portion of the printing unit 4 is separated from the plate cylinder 25 by the air of the blowing means 41 or by peeling off the paper separating claw 40, and the separated printing paper 18 is transferred to the belt conveying means. By 42, the sheet is conveyed to a sheet discharge table 43.

The plate discharge unit 7 has a plate discharge unit 50 which is an opening / closing unit provided on the upper surface side of the apparatus main body 10 so as to be movable linearly. The plate discharge unit 50 has an upper surface side of the apparatus main body 10. Two parallel links 51a, 51b
Are linearly movable in the directions indicated by arrows d in FIG. 2 and the directions indicated by arrow e in FIG. Then, linear movement is performed in the direction toward the end so that the upper opening 10a in the apparatus main body 10 is closed and the upper surface of the apparatus main body 10 is separated from the closed position (the position in FIGS. 2 and 4). It is movable between an open position (the position shown in FIGS. 3 and 5) for opening the upper opening 10a. That is, the document reading unit 11 and the plate discharging unit 50, which are two opening / closing units, are arranged on the upper surface side of the apparatus main body 10, and these units 11 and 50 are in opposite directions so as to open the central space of the upper opening 10a. , The upper surface of the apparatus main body 10 is opened in a substantially fully open state.

The leading end of the stencil sheet 18 wound around and mounted on the plate cylinder 25 is released from the plate discharging unit 50 by clamping.
The leading end side of the stencil sheet 18 whose clamp has been released is attached to the plate cylinder 2.
5, a pair of stencil delivery rolls 52a, 52b for transporting the stencil sheet 18 separated by the stencil peel off from the plate cylinder 25, and a pair of stencil delivery rolls 52a, 52b. A stencil discharge box 53 for storing the conveyed stencil sheet 18 is provided. The plate discharge claw 49 is projected so as to face the outer peripheral surface of the plate cylinder 25. A pair of plate discharging transport rolls 52
a, 52b are arranged at a position above and close to the plate discharging nail 49,
At the closed position of the plate discharge unit 50, the rotation of a main motor (not shown) is selectively transmitted to the plate discharge transport roll 52b via a plate discharge clutch (not shown).

The stencil discharge box 53 has a generally U-shaped horizontal shape, and has a substantially flat bottom portion 55 having a width at least as large as the width of the stencil sheet 18, and an upper portion of the bottom portion 55. A top surface portion 56 having a substantially flat plate shape, which is disposed substantially in parallel with an interval between the top surface portion 56 and the bottom surface portion 5.
5 and the other end of the top surface portion 56 and the bottom surface portion 55 are connected, and the top surface portion 56 and the bottom surface portion 55 are connected.
And an arc-shaped elastically deforming portion 58 which elastically deforms in a direction in which the opening 57 is closed by a pressing force in a direction in which the opening and closing portions are brought close to each other.

The plate discharge box 53 is arranged such that the opening 57 at one end faces the pair of plate discharge transport rollers 52a and 52b at the mounting position of the plate discharge box insertion chamber.

The plate discharge box 53 can be inserted into the plate discharge box insertion chamber with the elastic deformation portion 58 elastically deformed in the direction to close the opening 57 on one end side. The lock portion 61 is locked by the return deformation, so that the draw-out from the plate discharge box insertion chamber is prevented. Further, by elastically deforming the elastically deforming portion 58 in the direction in which the opening 57 is closed at the mounting position, the lock portion 61 is unlocked, and drawing out of the plate discharge box insertion chamber is allowed.

<Plate making and printing operations> Next, plate making and printing operations of the stencil printing apparatus 1 will be briefly described. When the stencil making operation is selected, it is checked whether or not the stencil sheet 18 is wound and mounted on the plate cylinder 25. If the stencil sheet 18 is mounted, the clamp at the end of the stencil sheet 18 is released, and the stencil sheet 18 is released.
Is guided between the pair of plate discharge rollers 52a and 52b, and the stencil sheet 18 is conveyed while being peeled off from the plate cylinder 25 by rotation of the pair of plate discharge rollers 52a and 52b.
The stencil sheet 18 conveyed by the pair of stencil transport rollers 52a and 52b is fed into the stencil box 53 through the opening 57 of the stencil discharge box 53, and the stencil discharge operation is completed.

When the stencil discharging process is completed, the thermal head 20 pierces the stencil sheet 18 based on the image data read by the original reading operation. Then, a stencil printing process is performed in which the stencil sheet 18 having been stencil wound around the plate cylinder 25 is mounted, and the stencil making operation is completed.

Next, when the printing operation is selected,
It is checked whether or not there is a printing sheet 31 on the sheet 5, and if there is no printing sheet 31, an out-of-paper error process is performed. Further, it is checked whether or not the stencil sheet 18 has been set on the plate cylinder 25, and if the stencil sheet 18 has not been set, a plateless error process is performed. In addition, it is checked whether or not there is ink in the ink pool between the squeegee roll 27 and the doctor roll 28. If there is no ink, an error process for no ink is performed.

Then, when all of these checks are passed,
The printing drum 31 is rotated, and the printing paper 31 is fed to the printing drum 25 from the paper feeding unit 5 in synchronization with the rotation. The fed printing paper 31 is pressed by the pressing roll 30 on the stencil sheet 1 of the plate cylinder 25.
8, the ink image is transferred to the printing paper 31, and the printed printing paper 31 is
0 and the outer peripheral wall 25 of the plate cylinder 25 by the action of the blowing means 41 and the like.
After being separated from the belt 45, the sheet is conveyed by the belt conveying means 42 and discharged to the sheet discharge table 43 from the lowermost stream of the belt 45. Output tray 4
The printing paper 31 discharged to 3 is placed here in a stacked state. This printing operation is performed for the set number of sheets, and the printing operation is completed.

[Operation of Each Unit and Associated Operation]
During the above operation process, the stencil sheet 18 and the printing paper 31
When the jamming occurs, the document reading unit 11 and the plate discharging unit 50 provided on the upper surface side of the apparatus main body 10 are set to the open positions shown in FIGS. 3 and 5, thereby opening the space of the upper opening 10a of the apparatus main body 10. Then, the plate cylinder 25 in the apparatus main body 10 can be viewed from the open space. Therefore, the jamming process of the stencil sheet 18 and the printing paper 31 generated on the plate cylinder 25 side can be easily performed. Further, since the jamming on the plate cylinder 25 side can be performed without using a configuration in which the plate cylinder 25 can be pulled out from the apparatus main body 10 as in the conventional example, the stencil printing apparatus 1 can be reduced in size, simplified, and cost reduced. Can also be planned.

In the above embodiment, one of the opening / closing units can read the contents of the document as image data.
Further, based on the read image data, the stencil paper 18
A document reading unit 11 having a thermal head 20 that pierces the original document reading unit 11. When the document reading unit 11 is in the closed position, the thermal head 20 is in a position where the platen roll 21 is pressed against the original, and in a position where the stencil sheet 18 closes the base paper accommodating portion 19. When the document reading unit 11 is in the open position, the thermal head 20 is at the separated position of the platen roll 21, and
Since the original sheet accommodating portion 19 of the stencil sheet 18 is set to the open position, the original sheet accommodating portion 19 is opened by setting the document reading unit 11 to the open position, and the thermal head 20 is separated from the platen roll 21 so that the platen Since the stencil sheet 3 such as the roll 21 can be seen, the stencil sheet 18 can be replenished.
Exchange work and jamming processing on the side of the plate making section 3 are possible.

The other one of the opening / closing units is a plate discharging unit 50 for removing the stencil sheet 18 attached to the plate cylinder 25 from the plate cylinder 25 and accommodating the removed stencil sheet 18, so that the plate discharging unit 50 is opened. By setting the position, the plate discharge unit 7 can be viewed, so that the jamming process on the plate discharge unit 7 side is possible. By setting both the document reading unit 11 and the plate discharge unit 50 to the open position, the plate cylinder 25 can be viewed from the open space and the plate making unit 3 and the plate discharge unit 7 are also opened, so that the jamming position is unknown. Jamming can be easily performed.

That is, if it is not clear whether the jamming position of the stencil sheet 18 is on the plate cylinder 25 side, on the stencil making section 3 side, or on the stencil discharging section 7 side, the worst three opening operations in the conventional example. However, in the above-described embodiment, two opening operations may be performed. In particular, since it is not necessary to perform a troublesome withdrawal operation of the plate cylinder 25, the jamming processing operation can be easily performed.

In the above embodiment, the original reading unit 11
Opening and closing is a rotational movement about the end side of the apparatus main body 10 as a center of rotation (rotation support shaft 12), and opening and closing of the plate discharging unit 50 is a linear movement that moves the upper surface of the apparatus main body 10 from the center side toward the end. Since the document reading unit 11 is moved, the document reading unit 11 is
The opening 10a of the plate discharging unit 50 is widely opened.
Is moved to the open position by linear movement, so that the plate discharging claw 49 of the plate discharging portion 7 and the pair of plate discharging conveyance rolls 52a, 52b
Parts to which ink adheres do not face upward. As described above, the upper opening 10a of the apparatus main body 10 can be opened as widely as possible, and the possibility that the user stains his / her finger, clothes, or the like with the ink adhering part of the plate discharging unit 7 can be prevented as much as possible.

<Other Embodiments> According to the above-described embodiment, the plate discharging unit 50 is configured to open and close the upper opening 10a of the apparatus main body 10 by linear movement. For example, the upper opening 10a may be opened and closed by rotating. However, the linear movement has the advantages described above. In the above-described embodiment, the plate discharging unit 50 is configured to linearly move by the two parallel link members 51a and 51b. However, the plate discharging unit 50 may be configured to linearly move by a guide rail or the like, and any linear moving means may be used. . However, using the two parallel link members 51a and 51b as in the above embodiment allows the linear movement to be performed at lower cost.

According to the above-described embodiment, the original reading unit 11 is configured to open and close the upper opening 10a of the apparatus main body 10 by rotational movement. However, the original reading unit 11 opens and closes the upper opening 10a by movement other than rotational movement. It may be configured to open and close. For example, when the thermal head 20 serving as a writing head is not fixed to the document reading unit 11, the upper opening 10a may be opened and closed by linear movement. However, as in the above embodiment, the thermal head 20
Is preferable because the pressure of the thermal head 20 can be pressed and separated from the platen roll 21 in conjunction with the opening and closing operation of the document reading unit 11.

According to the above-described embodiment, the plate cylinder 25 is not configured to be able to be pulled out to the apparatus main body 10, but may be configured to be able to be drawn out.

According to the above-described embodiment, the case where the present invention is applied to the stencil printing apparatus 1 is shown. However, this is an apparatus other than the stencil printing apparatus, and has the plate cylinder 25 in the apparatus main body 10. However, the present invention can be similarly applied to a printing apparatus which performs printing by winding and mounting a plate base paper around the plate cylinder 25.

[0054]

As described above, according to the first aspect of the present invention, the two opening / closing units are provided so as to be openable and closable so as to open the space of the upper opening. By setting the two provided opening / closing units to the open position, the space of the upper opening of the apparatus main body is opened, and the plate cylinder in the apparatus main body can be viewed from the open space, and the plate base paper generated on the plate cylinder side. In addition, it is possible to easily perform the jamming process for the printing paper and the printing paper, and also to perform the jamming process on the plate cylinder side without using a configuration in which the plate cylinder can be freely pulled out, so that the apparatus can be reduced in size and simplified.

According to the second aspect of the present invention, one of the opening / closing units is capable of reading the contents of a document as image data and has a write head for writing on a plate based on the read image data. When the original reading unit is in the closed position, the write head is located at the pressure contact position of the platen roll and at a position that closes the base sheet accommodating portion of the platen paper. Since it is a separated position and a position where the base paper accommodating part of the plate base paper is opened, in addition to the effect of the invention of claim 1, the base paper accommodating part is opened by setting the document reading unit to the open position, and Since the writing head can be separated from the platen roll and face the plate making section such as the platen roll, it is necessary to replenish the plate base paper and Packaging process is possible.

According to the third aspect of the present invention, another one of the opening / closing units is a plate discharging unit that removes the plate material mounted on the plate cylinder from the plate cylinder and stores the removed plate material. In addition to the effects of the first or second aspect of the present invention, the plate discharge unit can be exposed by setting the plate discharge unit to the open position, so that the plate discharge unit can be jammed. Also, by setting both the original reading unit and the plate discharge unit to the open position, the plate cylinder can be viewed from the open space, and the plate making unit and the plate discharge unit are also opened. Easy.

According to the fourth aspect of the invention, the opening and closing of the original reading unit is a rotational movement about the end of the apparatus main body as a rotation center, and the opening and closing of the plate discharging unit is performed by moving the upper surface of the apparatus main body from the center to the end. Since the linear movement is performed in the direction of the original, the original reading unit is moved to the open position by the rotational movement, so that the upper opening of the apparatus main body is widely opened. Since the plate discharge unit is moved to the open position by linear movement, the components of the plate discharge unit do not face upward, so that the upper opening of the apparatus main body can be opened as widely as possible and the user can use the parts with ink attached to the plate discharge unit. The risk of soiling fingers, clothes, etc. can be minimized.

According to the fifth aspect of the present invention, since the stencil sheet is a stencil sheet, the same effect as that of the first to fourth aspects can be obtained in a stencil printing apparatus.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is an overall schematic configuration diagram of a stencil printing apparatus.

FIG. 2 is a cross-sectional view of the stencil printing apparatus showing an embodiment of the present invention and showing a state in which a document reading unit and a plate discharge unit are both located at a closed position.

FIG. 3 is a cross-sectional view of the stencil printing machine showing an embodiment of the present invention and showing a state in which both a document reading unit and a plate discharging unit are located at an open position.

FIG. 4 is a perspective view of a main part of the stencil printing apparatus showing an embodiment of the present invention and showing a state in which a document reading unit and a plate discharging unit are both located at a closed position.

FIG. 5 is a perspective view of a main part of the stencil printing apparatus showing an embodiment of the present invention and showing a state in which a document reading unit and a plate discharging unit are both located at an open position.

FIG. 6 is an overall perspective view of a conventional stencil printing apparatus.

FIG. 7 is a perspective view of a main part of a conventional stencil printing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 stencil printing device (printing device) 2 original reading unit 3 stencil making unit 4 printing unit 5 paper feeding unit 6 paper discharging unit 7 stencil discharging unit 10 device body 10 a upper opening 11 original reading unit (opening / closing unit) 18 stencil paper (stencil paper) 20) Thermal head (writing head) 21 Platen roll 25 Plate cylinder 50 Plate discharging unit (opening / closing unit)

Claims (5)

[Claims] 1. An apparatus body having a plate cylinder for mounting a plate material thereon, and two opening / closing units for opening and closing an upper opening in the apparatus body, which is located above the plate cylinder, on an upper surface side of the apparatus body. The printing apparatus according to claim 1, wherein the two opening / closing units are movably opened and closed so as to open a space of the upper opening. 2. The printing apparatus according to claim 1, wherein one of the opening / closing units is capable of reading the contents of a document as image data, and writes the original on the plate based on the read image data. A document reading unit having a writing head, wherein at a closed position of the document reading unit, the writing head is at a pressure contact position of a platen roll and at a position for closing a base paper accommodating portion of the plate base paper; The printing apparatus, wherein the writing head is located at a position where the platen roll is separated from the platen roll and a position where the base paper accommodating portion of the plate base paper is opened. 3. The printing apparatus according to claim 1, wherein another one of the opening / closing units removes the plate base paper mounted on the plate cylinder from the plate cylinder, and removes the plate base paper. A printing apparatus, wherein the printing apparatus is a plate discharge unit that stores the plate material. 4. The printing apparatus according to claim 1, wherein the opening and closing of the document reading unit is a rotational movement about an end of the apparatus body as a center of rotation, and the opening and closing of the plate discharging unit is performed. A printing apparatus, wherein the printing apparatus is a linear movement that moves an upper surface of the apparatus main body from a substantially central side toward an end. 5. The printing apparatus according to claim 1, wherein
A stencil printing machine, wherein the stencil sheet is a stencil sheet.