JP5221041B2 - Stencil printing machine - Google Patents

Description

  The present invention relates to a stencil printing apparatus that has a refeed unit and can perform double-sided printing.

  Conventionally, digital thermal stencil printing is known as a simple printing method. This is because a thermal head having a plurality of fine heating elements is brought into contact with a master obtained by bonding a thermoplastic resin film and a porous support, and the master is placed on a platen roller or the like while energizing the heating elements in a pulsed manner. After the punched image based on the image information is hot-melt perforated and engraved on the thermoplastic resin film of the master by conveying with a conveying means, the perforated master is wound around a porous cylindrical plate cylinder and pressed. By pressing the paper against the outer peripheral surface of the plate cylinder by pressing means such as a roller, the ink supplied to the inner peripheral surface of the plate cylinder is oozed out from the plate cylinder opening portion and the master punching portion, and this ink is transferred to the paper A printed image is obtained on a sheet.

  In the stencil printing described above, duplex printing has recently been frequently performed in which printing is performed on both sides of a sheet for the purpose of reducing the amount of paper consumed and the storage space for documents. As an example of this, a divided pre-printed master in which the first plate-making image and the second plate-making image are arranged in two directions in the direction of rotation of the plate cylinder is used. After the plate-making image is printed, this paper is guided to the auxiliary tray, and after one plate-making image is printed on the surface of the second sheet fed from the paper feeding unit, this paper is guided to the auxiliary tray, and the auxiliary tray The first sheet is re-feeded from the tray, the other plate-making image is printed on this back surface, this sheet is discharged to the sheet discharge tray, and this operation is continuously performed to obtain a double-sided printed matter in one step. A stencil printing apparatus is disclosed in, for example, “Patent Document 1”.

JP 2005-246730 A

  In the stencil printing apparatus disclosed in “Patent Document 1”, a refeeding means having a plate cylinder and an auxiliary tray is detachable from the apparatus main body, so that the recovery work can be easily performed when a paper jam occurs. It can be carried out. If the plate cylinder and the sheet refeeding unit can be pulled out separately, the plate cylinder and the sheet refeeding unit come into contact with each other when the plate cylinder and the sheet refeeding unit are pulled out at the same time. There is a problem that the ink is damaged or the ink adheres. Further, there is a problem that the master wound around the plate cylinder is damaged by the contact, and additional printing using this master cannot be performed.

  The present invention solves each of the above-mentioned problems, and the plate cylinder and the refeeding means are detachable from the apparatus main body, and can be prevented from coming into contact with each other when detached from the apparatus main body. An object is to provide a possible stencil printing apparatus.

According to a first aspect of the present invention, there is provided a printing unit having a plate cylinder rotatably supported by an apparatus main body and pressing means provided so as to be able to contact with and separate from the plate cylinder, and a printed image on the surface of the printing unit. Re-feeding means for re-feeding toward the printing unit after temporarily storing the paper on which the paper is formed, and after performing a surface printing step of printing a surface image on one side of the paper In a stencil printing apparatus capable of double-sided printing for performing a backside printing process for printing a backside image on the other side of the paper, the plate cylinder and the refeeding means are individually detachable from the apparatus main body, respectively. A plate cylinder fixing means for fixing the plate cylinder to the apparatus main body, a refeed fixing means for fixing the refeed means to the apparatus main body, and an operation for releasing the fixation of the plate cylinder Plate cylinder fixing release switch and paper jam processing When the and a refeed unlocking switch is operated to release the sheet refeeding means, one of said plate cylinder unlocking switch or the re-feeding unlocking switch is operated, unpinned to said apparatus main body of the plate cylinder or the re-feeding means towards said unlocking switch is operated, and the plate cylinder or the re-feeding towards the other unlocking switch has not been manipulated The paper means is fixed to the apparatus main body .

  According to a second aspect of the present invention, in the stencil printing apparatus according to the first aspect of the present invention, the stencil printing apparatus further includes a plate cylinder fixing release display unit and a refeed fixing release display unit, and the plate cylinder or the refeed unit is fixed. The display means corresponding to the release is operated.

  According to a third aspect of the present invention, in the stencil printing apparatus according to the second aspect, the apparatus main body further includes a cover that is opened and closed when the plate cylinder and the refeeding unit are attached and detached, and the cover is opened. When the cover is closed, the plate cylinder and the sheet refeeding unit are fixed when the cover is closed.

According to a fourth aspect of the present invention, in the stencil printing apparatus according to the third aspect, when a paper jam has occurred in the vicinity of the refeeding means, the plate cylinder is fixed when the cover is opened. The refeeding means is released from being fixed.

  According to the present invention, since either the plate cylinder unit or the refeed unit can be removed from the apparatus main body by the control of the plate cylinder fixing means and the refeeding fixing means, the plate cylinder can be replaced or refeeded. It is possible to prevent each unit from being damaged or damaged when the plate cylinder unit and the refeed unit come into contact with each other in the paper jam processing around the means, and the master wound around the plate cylinder is damaged. Accordingly, it is possible to prevent the occurrence of a problem that makes additional printing impossible.

  FIG. 1 shows a stencil printing apparatus adopting an embodiment of the present invention. Since this stencil printing apparatus has a configuration related to the double-sided printing apparatus disclosed in Japanese Patent Application Laid-Open No. 2003-200355, description of each part is omitted as much as possible.

  In FIG. 1, a stencil printing apparatus 1 includes a printing unit 2, a plate making unit 3, a paper feeding unit 4, a plate discharging unit 5, a paper discharging unit 6, an image reading unit 7, a refeed unit 9 having an auxiliary tray 8, and a switching member 10. Etc.

  The printing unit 2 disposed almost at the center of the apparatus main body 42 includes a plate cylinder 11 and a press roller 12 as pressing means. The plate cylinder 11 is rotatably supported by the apparatus main body 42 and is driven to rotate by a plate cylinder driving means (not shown). The plate cylinder 11 has an openable / closable clamper 13 on the outer peripheral surface thereof, and the divided pre-made master 14 made by the plate making unit 3 is wound around the outer peripheral surface of the plate cylinder 11 at the time of duplex printing. The divided master-making master 14 is formed with a first master-making image corresponding to the front image and a second master-making image corresponding to the back image, and an un-made part is formed between the master-making images. On the plate cylinder 11, the divided plate-making master 14 is wound so that the first plate-making image corresponds to the front surface area shown in FIG. 1, the second plate-making image corresponds to the same back surface area, and the non-plate making portion corresponds to the same intermediate area. Be dressed. A rotary encoder (not shown) for detecting the position of the plate cylinder 11 is provided in the vicinity of the outer peripheral surface of the plate cylinder 11.

  A press roller 12 is disposed below the plate cylinder 11. Both ends of the press roller 12 made of an elastic material having water repellency such as fluororesin are rotatably supported by an arm member (not shown). The arm member (not shown) is swingably supported by a swing means (not shown). Yes. The press roller 12 selectively occupies the separation position shown in FIG. 1 where the circumferential surface is separated from the plate cylinder 11 and the pressure contact position where the circumferential surface is in pressure contact with the divided plate-making master 14 on the plate cylinder 11. In the vicinity of the peripheral surface of the press roller 12, a cleaning roller 16 that performs cleaning by contacting the peripheral surface of the press roller 12 is disposed. The cleaning roller 16 is rotationally driven by a driving unit (not shown).

  In the vicinity of the right side of the press roller 12, a refeed guide member 17 is provided for transporting the surface-printed paper P sent from the refeed unit 9 along the peripheral surface of the press roller 12. A re-feeding registration roller 18 is disposed below the press roller 12 and feeds the paper P stored on the auxiliary tray 8 in contact with the peripheral surface of the press roller 12. A refeed conveyance unit 19 having an auxiliary tray 8 on the upper surface is disposed on the lower left side of the press roller 12, and a refeed positioning member 20 is provided integrally therewith. A sheet receiving plate 21 that is movable along the upper surface of the auxiliary tray 8 is disposed above the refeed conveyance unit 19. The auxiliary tray 8, the refeed guide member 17, the refeed registration roller 18, the refeed positioning member 20, the refeed conveyance unit 19, and the sheet receiving plate 21 constitute a refeed unit 9.

  On the left side of the contact position between the plate cylinder 11 and the press roller 12, the switching member 10 is disposed on the conveyance path of the paper P. The switching member 10 is rotatably supported by the apparatus main body 42 at the downstream end portion in the paper conveyance direction, and is moved by a moving means (not shown), and is indicated by a first position indicated by a solid line and a two-dot chain line in FIG. Selectively occupying the second position. The paper P that has passed between the plate cylinder 11 and the press roller 12 is guided to the paper discharge unit 6 when the switching member 10 occupies the first position, and the switching member 10 occupies the second position. Is guided to the auxiliary tray 8.

  A plate making unit 3 is disposed on the upper right side of the printing unit 2. The plate making unit 3 includes a master holding member 23 that holds a master roll obtained by winding a master 22 in a roll shape, a platen roller 24, a thermal head 25, a master cutting unit 26, a master stock unit 27, a tension roller pair 28, and a reverse roller pair. In the plate making unit 3, the divided plate-making master 14 is created.

  A sheet feeding unit 4 is disposed below the plate making unit 3. The paper feed unit 4 has a known configuration including a paper feed tray, a paper feed roller, a separation roller, a separation pad, a registration roller pair, and the like.

  The plate discharging unit 5 disposed on the upper left side of the printing unit 2 also has a well-known configuration including an upper plate discharging member, a lower plate discharging member, a plate discharging box, a compression plate, and the like. Is peeled off from the outer peripheral surface of the plate and discarded inside the plate removal box.

  A paper discharge unit 6 is disposed below the plate discharge unit 5. The paper discharge unit 6 includes a peeling claw 31, a paper discharge transport unit 32, a paper discharge tray 33, a peeling fan 34, and the like. The front end of the peeling claw 31 is provided so as to be close to and away from the outer peripheral surface of the plate cylinder 11 by a swinging means (not shown), and the paper P from the outer peripheral surface of the plate cylinder 11 when occupied. To peel off. The paper discharge conveyance unit 32 includes a driving roller, a driven roller, an endless belt, a suction fan, and the like, and conveys the printed paper P on the upper surface of the endless belt in the arrow direction of FIG. The paper discharge tray 33 has one end fence and a pair of side fences, and the printed paper P is stacked on the upper surface thereof. The peeling fan 34 is disposed above the peeling claw 31 and is blown toward the outer peripheral surface of the plate cylinder 11 to finish the surface printing process and is peeled off from the outer peripheral surface of the plate cylinder 11 by the switching member 10. The leading edge of the sheet P to be peeled off and the sheet P peeled off from the outer peripheral surface of the plate cylinder 11 by the peeling claw 31 after finishing the back surface printing process is raised by air blowing.

  An image reading unit 7 is disposed on the upper part of the apparatus main body. The image reading unit 7 focuses a contact glass (not shown), a pressure plate (not shown) provided so as to be able to contact with and separate from the contact glass, a reflection mirror and a fluorescent lamp (not shown) that scan and read a document image, and a scanned image, respectively. The lens includes a lens (not shown), an image sensor (not shown) that processes a focused image, and the like.

  FIG. 2 shows an operation panel of the stencil printing apparatus 1. In the figure, the operation panel 15 includes a known plate making start key 35, a printing start key 36, a stop key 37, a numeric keypad 38 functioning as an input means, a display device 39 comprising a 7-segment LED, a display device 40 comprising an LCD, and the like. In addition to the configuration, a double-sided printing key 41 that is pressed when performing double-sided printing is disposed.

  FIG. 3 is a block diagram of control means used in the stencil printing apparatus 1. In the figure, the control means 30 is a microcomputer having a CPU 43, a ROM 44, a RAM 45, etc. therein, and based on operation signals from a rotary encoder and an operation panel 15 (not shown), the printing unit 2, the plate making unit 3, and the paper feeding unit 4 The operation of the plate discharge unit 5, the paper discharge unit 6, the image reading unit 7, the refeed unit 9, and the switching member 10 is controlled. The ROM 44 stores an operation program of the stencil printing apparatus 1, and various values and information are temporarily stored in the RAM 45. The CPU 43 stores the values and information stored in the RAM 45 and the operations called from the ROM 44. The operation of the stencil printing apparatus 1 is controlled based on the program.

  In the above-described configuration, the plate cylinder 11 is provided in the plate cylinder 11 with a well-known ink supply means for supplying ink to the inner peripheral surface, an ink pack (not shown) for storing ink supplied to the ink supply means, and ink in the ink pack. Is unitized with an ink pump (not shown) that sends the ink to the ink supply means, and is configured to be detachable integrally with the apparatus main body 42 as a plate cylinder unit 46 shown in FIG. Further, the sheet refeeding means 9 is also unitized, and is configured to be detachable integrally with the apparatus main body 42 as a sheet refeeding unit 47 (also referred to as a duplex unit) shown in FIG. The units 46 and 47 are provided on the front side of the apparatus main body 42, and are attached and detached by opening a cover (not shown) provided on the front side of the apparatus. Sensors (not shown) that determine whether the units 46 and 47 are attached to the apparatus main body 42 are provided in the units 46 and 47 attachment portions of the apparatus main body 42. The refeed unit 47 is provided with a sensor (not shown) that determines whether or not a paper jam has occurred in the vicinity of the refeed unit 47.

  As shown in FIG. 4, plate cylinder fixing means 48 for fixing the plate cylinder unit 46 to the apparatus main body 42 is provided near the left side of the plate cylinder unit 46, and refeeding is provided near the left side of the refeed unit 47. Refeed fixing means 49 for fixing the paper unit 47 to the apparatus main body 42 is provided. Since the plate cylinder fixing means 48 and the refeed fixing means 49 are configured in the same manner, only the plate cylinder fixing means 48 will be described in this embodiment.

  As shown in FIG. 5, the plate cylinder fixing means 48 includes a pull-type solenoid 50, a locking piece 51 attached to a plunger of the solenoid 50, a tension spring 52, and the like. The solenoid 50 is attached to the apparatus main body 42, and the locking piece 51 has a front end portion that can be engaged with a notch formed in the plate cylinder unit 46. The tension spring 52 has one end attached to the locking piece 51 and the other end fixed to the apparatus main body 42. With the above-described configuration, when the solenoid 50 is not in operation, the locking piece 51 is engaged with the plate cylinder unit 46 by the biasing force of the tension spring 52, so that the apparatus main body 42 of the plate cylinder unit 46 is shown in FIG. As shown in FIG. 6, the drawer 50 is regulated, the solenoid 50 is operated, the locking piece 51 is pulled to the left, and the engagement between the locking piece 51 and the plate cylinder unit 46 is released. The unit 46 is allowed to be pulled out from the apparatus main body 42. Hereinafter, the state in which the plate cylinder unit 46 and the paper refeed unit 47 can be pulled out from the apparatus main body 42 when the solenoid 50 is operating is a state in which the plate cylinder fixing means 48 and the paper refeed fixing means 49 are deactivated, The state where the operation is released and the plate cylinder unit 46 and the refeed unit 47 cannot be pulled out from the apparatus main body 42 will be described as the operating states of the plate cylinder fixing means 48 and the refeed fixing means 49.

  As shown in FIG. 4, in the vicinity of the right side of the plate cylinder unit 46, the plate cylinder that is pressed down when releasing the fixation of the plate cylinder unit 46 by the plate cylinder fixing means 48 in order to pull out the plate cylinder unit 46 from the apparatus main body 42. A fixing release switch 53 is provided. In the vicinity of the plate cylinder fixing release switch 53, it is displayed that the plate cylinder fixing release switch 53 is pressed and the fixing of the plate cylinder unit 46 by the plate cylinder fixing means 48 is released. An LED 54 is provided as a plate cylinder fixing release display means. Further, in the vicinity of the right side of the paper re-feed unit 47, the re-feed which is pressed when releasing the re-feed unit 47 by the re-feed fixing means 49 in order to pull out the re-feed unit 47 from the apparatus main body 42. A paper fixing release switch 55 is provided. In the vicinity of the paper refeeding fixing release switch 55, the paper refeeding fixing release switch 55 is pressed to release the fixing of the paper refeeding unit 47 by the paper refeeding fixing means 49. An LED 56 is provided as a re-feeding fixed release display means for indicating that this has been done.

Based on the above-described configuration, the operation in the first embodiment of the present invention will be described. First, the case where the plate cylinder 11 is removed from the apparatus main body 42 will be described based on the flowchart shown in FIG.
The operator releases a cover (not shown) of the stencil printing apparatus 1 and presses the plate cylinder fixing release switch 53 (ST1). When the plate cylinder fixing release switch 53 is pressed, the refeed unit 47 is attached to the apparatus main body 42 (ST2), and the refeed unit 47 is not fixed to the apparatus main body 42. In (ST3), the refeed fixing means 49 is operated, the refeed unit 47 is fixed to the apparatus main body 42 (ST4), the LED 56 is turned off (ST5), and the operation of the plate cylinder fixing means 48 is released. Then, the fixation of the plate cylinder unit 46 to the apparatus main body 42 is released (ST6), the LED 54 is turned on (ST7), and the plate cylinder unit 46 can be pulled out from the apparatus main body 42. If the refeed unit 47 is fixed to the apparatus main body 42 in ST3, ST4 and ST5 are omitted and the process proceeds to ST6. In ST2, if the refeed unit 47 is removed from the apparatus main body 42, the plate cylinder unit 46 is attached to the apparatus main body unless the refeed unit 47 is attached to the apparatus main body 42 as shown in FIG. A warning is displayed on the LCD display device 40 that it cannot be pulled out from 42 (ST8).

Next, the case where the paper re-feeding means 9 is removed from the apparatus main body 42 will be described based on the flowchart shown in FIG.
The operator releases a cover (not shown) of the stencil printing apparatus 1 and presses the refeed fixing release switch 55 (ST11). When the refeed fixing release switch 55 is pressed, the plate cylinder unit 46 is attached to the apparatus main body 42 (ST12) and the plate cylinder unit 46 is not fixed to the apparatus main body 42 (ST12). In ST13), the plate cylinder fixing means 48 is operated, the plate cylinder unit 46 is fixed to the apparatus main body 42 (ST14), and the LED 54 is turned off (ST15). The fixing of the paper feed unit 47 to the apparatus main body 42 is released (ST16), the LED 56 is turned on (ST17), and the refeed unit 47 can be pulled out from the apparatus main body 42. If the plate cylinder unit 46 is fixed to the apparatus main body 42 in ST13, ST14 and ST15 are omitted and the process proceeds to ST16. In ST12, when the plate cylinder unit 46 is removed from the apparatus main body 42, the refeed unit 47 is attached to the apparatus main body 42 unless the plate cylinder unit 46 is attached to the apparatus main body 42 as shown in FIG. A warning is displayed on the LCD display device 40 (ST18).

  According to the above-described configuration, only one of the plate cylinder unit 46 and the refeed unit 47 can be detached from the apparatus main body 42 by the control of the plate cylinder fixing means 48 and the refeeding fixing means 49. 11 can be prevented from being damaged or damaged when the plate cylinder unit 46 and the paper refeed unit 47 come into contact with each other during the exchange of the paper 11 or the paper jam processing around the paper refeed means 9. It is possible to prevent the occurrence of a problem that makes it impossible to perform additional printing when the master wound around the cylinder 11 is damaged.

Next, the operation in the second embodiment of the present invention will be described based on the flowcharts shown in FIGS.
When the cover (not shown) is opened by the operator (ST21), the operation of the plate cylinder fixing means 48 is stopped, the fixation of the plate cylinder unit 46 to the apparatus main body 42 is released (ST22), and the LED 54 is lit (ST23). If the cover (not shown) is closed by the operator (ST31), it is determined whether or not the refeed unit 47 is mounted on the apparatus main body 42 (ST32), and the refeed unit 47 is mounted on the apparatus main body 42. If it is, the refeed fixing means 49 is activated to fix the refeed unit 47 to the apparatus main body 42 (ST33) and the LED 56 is turned off (ST34). Further, it is determined whether or not the plate cylinder unit 46 is mounted on the apparatus main body 42 (ST35). If the plate cylinder unit 46 is mounted on the apparatus main body 42, the plate cylinder fixing means 48 is activated to operate the plate cylinder. The unit 46 is fixed to the apparatus main body 42 (ST36), and the LED 54 is turned off (ST37). If the refeed unit 47 is not attached to the apparatus main body 42 in ST32, a warning is displayed on the LCD display device 40 that the refeed unit 47 is removed from the apparatus main body 42 (ST38). If the plate cylinder unit 46 is not attached to the apparatus main body 42 in ST35, a warning is displayed on the LCD display device 40 that the plate cylinder unit 46 is detached from the apparatus main body 42 (ST39).

  According to the above-described configuration, the plate cylinder unit 46 is automatically released from the fixed state when the cover is opened, so that the plate cylinder 11 can be removed from the apparatus main body 42 without pressing the plate cylinder fixing release switch 53. And operability can be improved. Further, since the plate cylinder unit 46 and the refeed unit 47 are automatically fixed to the apparatus main body 42 when the cover is closed, the operability can be improved and the excitation state of the solenoid 50 is released. Therefore, power consumption can be reduced.

Next, the operation in the third embodiment of the present invention will be described based on the flowchart shown in FIG.
When the cover (not shown) is opened by the operator (ST41), the operation of the plate cylinder fixing means 48 is stopped, the fixation of the plate cylinder unit 46 to the apparatus main body 42 is released (ST42), and the LED 54 is lit (ST43). Then, it is determined whether or not a paper jam has occurred in the vicinity of the refeed unit 47 (ST44), and when it is determined that no paper jam has occurred, the operation is completed. If it is determined that a paper jam has occurred, the operation of the paper refeeding fixing means 49 is released, and the refeeding unit 47 is released from being fixed to the apparatus main body 42 (ST45), and the LED 56 is turned on. (ST46) The plate cylinder fixing means 48 is operated to fix the plate cylinder unit 46 to the apparatus main body 42 (ST47), and the LED 54 is turned off (ST48).

  According to the above-described configuration, the plate cylinder unit 46 is automatically released from the fixed state when the cover is opened, so that the plate cylinder 11 can be removed from the apparatus main body 42 without pressing the plate cylinder fixing release switch 53. And operability can be improved. In addition, when a paper jam has occurred near the paper refeed unit when the cover is opened, the paper refeed unit 47 is automatically released from fixing to the apparatus main body 42. Can be improved.

1 is a schematic front view of a stencil printing apparatus capable of double-sided printing employing an embodiment of the present invention. It is the schematic of the operation panel used for one Embodiment of this invention. It is a block diagram of the control means used for one Embodiment of this invention. It is the schematic explaining the periphery structure of the plate_cylinder | printing_drum unit used in one Embodiment of this invention, and a refeed unit. It is the schematic explaining the fixed state of the plate cylinder fixing means used for one Embodiment of this invention. It is the schematic explaining the fixation cancellation | release state of the plate cylinder fixing means used for one Embodiment of this invention. It is a flowchart explaining operation | movement of the plate cylinder fixing means in the 1st Embodiment of this invention. It is the schematic which shows the warning display at the time of the re-feeding unit non-mounting in the 1st Embodiment of this invention. It is a flowchart explaining operation | movement of the refeed fixing means in the 1st Embodiment of this invention. It is the schematic which shows the warning display at the time of plate cylinder unit non-mounting in the 1st Embodiment of this invention. It is a flowchart explaining operation | movement of the plate cylinder fixing means at the time of the cover opening in the 2nd Embodiment of this invention. It is a flowchart explaining operation | movement of the plate cylinder fixing means at the time of cover obstruction | occlusion in the 2nd Embodiment of this invention, and a refeed fixing means. 10 is a flowchart for explaining operations of a plate cylinder fixing unit and a refeed fixing unit when a cover is opened in the third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stencil printing apparatus 2 Printing part 9 Refeeding means 11 Plate cylinder 12 Pressing means (press roller)
42 Main body 48 Plate cylinder fixing means 49 Refeed fixing means 53 Plate cylinder fixing release switch 54 Plate cylinder fixing release display means (LED)
55 Refeed fixing release switch 56 Refeed fixing release indication means (LED)

Claims (4)

A printing unit having a plate cylinder rotatably supported by the apparatus main body and a pressing unit provided so as to be able to contact with and separate from the plate cylinder;
Re-feeding means for re-feeding the paper with a print image formed on the surface thereof in the printing unit after temporarily storing the paper;
In a stencil printing apparatus capable of double-sided printing which performs a back side printing step of printing a back side image on the other side of the paper after performing a front side printing step of printing a front side image on one side of the paper,
The plate cylinder and the refeeding means are individually detachable from the apparatus main body, and a plate cylinder fixing means for fixing the plate cylinder to the apparatus main body;
Re-feed fixing means for fixing the re-feed means to the apparatus body;
A plate cylinder fixation release switch operated when releasing the fixation of the plate cylinder;
A refeed fixing release switch that is operated when releasing the fixing of the refeeding means at the time of paper jam processing;
When either the plate cylinder fixing release switch or the refeed fixing release switch is operated,
Unpinned to said apparatus main body of the plate cylinder or the re-feeding means towards said unlocking switch is operated, and the plate cylinder or the re-feeding towards the other unlocking switch has not been manipulated A stencil printing apparatus , wherein paper means is fixed to the apparatus main body . In the stencil printing apparatus according to claim 1,
A plate cylinder fixing release display means and a refeed fixing release display means;
A stencil printing apparatus for operating a corresponding display means when the fixing of the plate cylinder or the refeed means is released. In the stencil printing apparatus according to claim 2,
The apparatus main body has a cover that is opened and closed when the plate cylinder and the re-feeding means are attached and detached. When the cover is opened, the plate cylinder is unfixed and the cover is closed. The stencil printing apparatus, wherein the plate cylinder and the refeeding means are fixed to each other. In the stencil printing apparatus according to claim 3,
The stencil printing is characterized in that when a paper jam occurs in the vicinity of the refeeding means, the plate cylinder is fixed when the cover is opened, and the refeeding means is released. apparatus.

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