JPH0717152A - Stencil printing original form - Google Patents

Abstract

PURPOSE:To prevent ink from bleeding out of a stencil printing original form after forming of a perforated image and prevent adhesion of ink to clothes and the like in pulling out a separator film interposed in the stencil printing original form. CONSTITUTION:In a stencil printing original form 8 formed by disposing an ink-impregnated body 13 in an open part in a frame 12, laminarly disposing an ink-impermeable substrate 14 and heat-sensitive stencil raw paper 15 on the upper and lower surfaces of the ink-impregnated body 13, and fixing the laminate to the frame 12, a separator film 50 made of an upper piece 50a and a lower piece 50b and abutted on the upper and lower surfaces of the ink- imprenated body 13 is so disposed as to be pulled out of a pull-out port 52 provided at one end of the frame 12. A vertical dimension of a gap of the pull-out port 52 is determined so that the inner surfaces of the upper piece 50a and the lower piece 50b can be abutted to each other when the separator film 50 is pulled out. In this manner, ink adhering to the inner surfaces of both the pieces cannot inadvertently adhere to another part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing original plate in which an ink impregnated body is covered with a stencil original paper, for producing a perforated image composed of a portion through which ink for imprinting passes and a portion through which ink does not pass. Of the so-called stencil printing plate.

[0002]

2. Description of the Related Art The applicant of the present application has previously described, in Japanese Patent Application No. 4-35338, etc., a stencil printing plate having an ink impregnated body covered with a stencil sheet, which is fed into a plate making apparatus, and a thermal plate provided in the plate making apparatus. By a punching means such as a head, a punching image is formed on the stencil sheet based on image data of a desired character string, symbol, figure, etc., and the stencil printing original plate on which the punched image is formed is a portable stamp. We have proposed a stamping device which is attached to the lower surface of a block and imprints an image such as the desired character string, symbol or figure on the surface of paper or an article.

In this case, the stencil printing original plate is provided with a frame body having an opening portion having a rectangular shape in plan view, an ink impregnated body which is placed in the opening portion and is impregnated with ink, and the ink impregnated body. It is composed of a heat-sensitive stencil sheet covering the lower surface and a film which is an ink impermeable base material covering the upper surface of the ink impregnated body, and the film and the heat-sensitive stencil sheet are adhered to the upper and lower surfaces of the frame body with an adhesive. It was glued.

With such a structure, there are the following problems. That is, the stencil printing original plate after forming a perforation image by the plate making device, when not left mounted on the stamp block, when left unattended, if a pressing force is applied to the wide surface of the stencil printing original plate, The ink contained in the ink impregnated body oozes out from the image portion, and the ink (image) adheres to unnecessary portions. Therefore, in order to avoid this inconvenience, it is necessary to store and carry the stencil printing original plate on which the perforated image is formed by the plate making device in a state where the pressing force from the outside does not act, or to immediately attach it to the stamp block. did not become.

In order to solve this inconvenience, the applicant of the present invention has previously stated that in the specification and drawings attached to Japanese Utility Model Application Laid-Open No. 4-6505, ink does not permeate between the lower surface of the ink impregnated body and the heat-sensitive stencil sheet. It has been proposed that a separator film made of a material be inserted so that the separator film can be pulled out from the opening at one end of the frame.

[0006]

However, when the separator film is pulled out, the ink adheres to one side that was in contact with the ink impregnated body, and the surface is exposed, so that the operator's hand There was a risk that the clothes would get dirty. The present invention has been made to solve this problem, and an object thereof is to provide a stencil printing original plate in which ink does not adhere to the operator's hand or clothes even if the separator film is pulled out. Is.

[0007]

In order to achieve the above-mentioned object, the stencil printing plate of the present invention has an ink impregnated body disposed in an opening of a frame body, and the ink impregnated body is sandwiched between the ink impregnated body and the ink impregnated body. The permeable base material and the heat-sensitive stencil sheet were arranged in a laminated manner and fixed to a frame body, and a pair of upper and lower separator films that abut and sandwich the upper and lower surfaces of the ink impregnated body were provided on one side of the frame body. Arranged so that it can be pulled out from the outlet,
The extraction port is formed so that the inner surfaces of the separator films come into contact with each other when the pair of upper and lower separator films are extracted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment embodying the present invention will be described. The stamp device shown in FIG. 1 is detachably housed in the plate making device 1 and the housing portion 1b of the case body 3 of the plate making device 1. And a stamp block 2. An operation unit 1a is formed on the upper surface of the case body 3 of the plate making apparatus 1, and a keyboard 4 for inputting characters, symbols, figures and the like to the operation unit 1a and issuing operation instructions, a display 5 using a liquid crystal element, etc., Plate-making execution key 6, power switch 7
Etc. are provided. The special image such as a graphic can be input by inserting a recording medium such as a ROM card into a reading unit (not shown). The input image data is stored in a readable / writable memory (RAM) that is a data storage means at any time, and an image data signal is transmitted to the drive circuit of the thermal head 23 at the time of plate making work described later, according to a command from the microcomputer of the control means. To do.

An insertion opening 9 for inserting a stencil printing original plate 8 to be described later is opened on the side surface of the case body 3, and the stencil printing original plate 8 is conveyed through the insertion opening 9 through the conveying path 1 in the plate making apparatus 1.
Inserted at 0. The stencil printing plate 8 according to the present invention is
As shown in FIGS. 4 and 5, the opening 1 having a substantially rectangular shape in a plan view.
1 made of synthetic resin and ink impregnation body 13
A pair of upper and lower separator films 50 arranged so as to contact both upper and lower surfaces of the ink impregnated body 13, a heat-sensitive stencil sheet 15 arranged so as to cover the separator film 50 on the lower surface side of the ink impregnated body 13, and an ink. Impregnated body 13
And a film 14, which is an ink impermeable substrate, arranged so as to cover the separator film 50 on the upper side of the.

The heat-sensitive stencil sheet 15 has a thickness of 1 μm to 4
About μm polyethylene terephthalate (PET) film, polypropylene, thermoplastic film such as vinylidene chloride-vinyl chloride copolymer and natural fiber such as hemp fiber, kozo, mitsumata etc., Japanese paper, polyethylene, polyacrylonitrile, rayon, etc. A heat-sensitive stencil sheet 15 is arranged so that it is bonded to a porous support such as a nonwoven fabric (porous thin paper) made of synthetic fibers or the like, and the thermoplastic film is on the outside.

As shown in FIGS. 4 to 5, the ink impregnated body 1
3 is arranged in the opening 11 of the frame body 12, and only with respect to the shaded area of FIG. 4 in the frame body 12 through the layer of the adhesive 53 applied to the upper surface of the heat-sensitive stencil sheet 15 and the lower surface of the film 14. Adhesive fixed. Therefore, the separator film 50 is not adhered to the upper piece 50a and the lower piece 50b of the separator film, and the separator film 50 is attached to the frame 1 as described later.
It is possible to pull out from 2.

The frame 12 is integrally formed with rail-shaped projecting members 12a, 12a projecting vertically on both left and right sides of the frame 12 along the carrying direction, and the outer surface of each projecting member 12a. A guide rail 12b projecting in the horizontal direction is integrally formed in the. Further, on the inner surface of the protruding member 12a on one side, an engaging portion 16 having a substantially triangular protrusion in plan view is integrally formed at a portion displaced to the downstream side in the transport direction of the frame body 12. Reference numeral 12c is an engaging groove hole for engaging and mounting the stencil printing plate 8 on the lower surface of the stamp block 2.

Reference numeral 51 is a separator film 50.
Is a slot for allowing one upper piece 50a to pass therethrough, and a gap dimension is provided adjacent to this slot 51 between one surface of the frame 12 and the inner surface of the heat-sensitive stencil sheet 15 or the inner surface of the film 14. H is the upper and lower pieces 50a, 5 of the separator film 50
An extraction port 52 formed so as to be approximately equal to the total thickness of 0b is provided (see FIG. 5B). As the separator film 50, release paper obtained by subjecting high-quality paper or glassine paper to silicone treatment, a resin film of polyethylene terephthalate, tetrafluoroethylene, or the like is used. As the characteristics required for the separator film 50, those having poor wettability with the oil-based ink are suitable. When using release paper, it is preferable to apply silicone processing to the front surface as well as the contact surface with the ink impregnated body 13. This is because if the wettability is good, or if the silicone treatment on only one side is performed, the ink may spread to the inner surface side of the heat-sensitive stencil sheet 15, and the ink may exude from the perforated portion after the perforated image is formed.

The separator film 50 is shown in FIG.
And, as shown in (b), the upper part 50 is bent by bending the middle part.
a and a lower piece 50b, and the upper piece 50a is interposed between the lower surface of the film 14 as the ink impermeable substrate and the upper surface of the ink impregnated body 13 through the slot 52 through the slot 51. The lower piece 50b is inserted between the lower surface of the ink impregnated body 13 and the heat-sensitive stencil sheet 15.

Next, with reference to FIGS. 2, 4 and 5, the structure of the transport path 10 and the plate making apparatus 1 will be described. Figure 2
As shown in FIG. 3, the transport path 10 is composed of a lower guide plate 17 that supports the lower surface of the stencil printing plate 8 and left and right side guide plates 18 and 19 that guide the left and right sides of the stencil printing plate 8.
One side guide plate 18 is positionally fixed, and the other side guide plate 19 is a spring-biased movable structure that abuts the outer surface of the other guide rail 12a in the stencil printing original plate.

A feed roller 20 and a nipping roller 21 that are in contact with the upper and lower surfaces of the left and right protruding members 12a, 12a of the frame 12 are arranged in the middle of the conveying path 10 so as to face each other in the vertical direction. It is assumed that the feed roller 20 rotationally driven by is rotated in the clockwise direction in FIG. Platen 22 provided in the transport path 10
Is in contact with the upper surface of the frame 12 in the stencil printing plate 8 at the center in the left-right direction, and the thermal head holding plate 24 to which the thermal head 23 as a punching means is attached is centered on the shaft 25 below the lower guide plate 17. It is swingable up and down,
The tension spring 26 urges the thermal head 23 in the clockwise direction in FIG. 2 so that the thermal head 23 faces the platen 22 with the stencil printing plate 8 interposed therebetween. The thermal head holding plate 24 is operated by a cam mechanism (not shown) to move between a punching position in contact with the lower surface of the heat-sensitive stencil sheet 15 in the stencil printing plate 8 in the transport path 10 and a standby position spaced downward from the punching position. Rock.

On the left side of the thermal head holding plate 24, a holding plate 28 of the sandwiching roller 21 which is interlocked via a connecting wire 27 is provided so as to be able to perform a seesaw motion about a shaft 29. As shown in FIG. 3, the upper end of the connecting wire 27 is engaged with a support shaft 30 that rotatably supports the nipping roller 21. A discharge roller 31 is provided on the holding plate 28 on the opposite side (downstream side of conveyance) with a shaft 29 interposed therebetween via a shaft 32. The force of a tension spring 33 mounted on the holding plate 28 causes the holding plate 2 to move.
8 is biased counterclockwise in FIG. 2 about the shaft 29. On the other hand, the stop frame 35 is swingably arranged via a shaft 36 inside the holding plate 28.
A tension spring 34 is provided so that a gate 40 projecting upward at the front end of the stencil faces the front end of the stencil printing plate 8 in the transport path 10.
Is being urged by. When the holding plate 28 rotates counterclockwise about the shaft 29, the operating pin 37 protruding to the inner surface of the holding plate 28 contacts the neck portion 35b of the stop frame 35 extending in a substantially vertical shape, The stop frame 35 cooperates so that the gate 40 rotates downward so as to allow the stencil printing plate 8 to pass therethrough. The stopper piece 35a extending upward from the stop frame 35 is
When the stop frame 35 rotates counterclockwise, the upper guide plate 38 of the upper and lower guide plates 38, 39 arranged between the feed roller 20 and the housing portion 1b of the stamp block 2 is disposed.
The posture is maintained by contacting the lower surface.

When the stencil printing plate 8 is inserted into the transport path 10 so that the orientation of the upper and lower surfaces and the orientation of the leading end are normal, the stencil printing plate 8 of the frame body 12 on the side closer to the movable side guide plate 19 is Engaging portion 16 provided on the inner surface of the protruding member 12a
Are positioned so as to be displaced toward the downstream side of the frame body 12 in the transport direction. In this case, the plate spring 41 as a position fixing means for setting the stencil printing plate 8 in the normal posture at the plate making start position (the position where the tip of the stencil printing plate 8 is in contact with the gate 40). When the tip of the vehicle crosses over the engaging portion 16 which is the substantially triangular protrusion in plan view, it engages with a click feeling.

On the other hand, the transport passage 10 is provided with a push-back mechanism for pushing back the stencil printing plate 8 to the upstream side of transport. As one example thereof, a pressing lever 42 whose front end is exposed in the transport path 10 is provided so as to be horizontally rotatable around a support shaft 43, and a tension spring 44 is used to transport the stencil printing plate 8 to the upstream side of transport. Energize to push back. in this case,
The engaging force with which the leaf spring 41 is engaged with the engaging portion 16 is set to be higher than the pushing-back force by the tension spring 44. When the plate spring 41 and the engaging portion 16 are held in the engaged position, the pressing lever 42 rotates by a predetermined angle, and the sensor 45 detects the state, and the stencil printing plate 8 is It is detected that it is inserted in a normal posture and set at the plate making start position (see FIG. 3).

With this configuration, image data such as a predetermined character string is input with the keyboard 4, and then the stencil printing plate 8 is inserted into the transport path 10 through the insertion port 9. Then, the plate making execution key 6 is pressed. As a result, a control device such as a microcomputer (not shown) in the stamp device receives a signal from the sensor 45. As described above, it is recognized whether the stencil printing original 8 is inserted in a normal posture, the insertion posture is abnormal, or whether the stencil printing original 8 is inserted. When the insertion posture is normal, the gate 40 descends, and the thermal head 23 contacts the lower surface of the heat-sensitive stencil sheet 15 on the lower surface of the stencil sheet 8 to generate a signal according to desired image data. The thermal head 23 is energized, and at the same time, the feed roller 20 is driven to transfer the stencil printing plate 8 to the downstream side of conveyance at a predetermined speed, so that a perforated image of a predetermined mirror image is formed on the heat-sensitive stencil sheet 15 to enable plate making. Of.

Since the stencil printing plate 8 on which the punched image is formed is discharged into the accommodating portion 1b as described above, the stamp block 2 is pushed downward to form a stencil on the lower surface of the stamp block 2 by a predetermined means. The printing plate 8 can be mounted. A stamp member (not shown) including a cushion layer and a pressure-sensitive adhesive layer is provided on the lower surface of the stamp block 2, and the stencil printing plate 8 on which the perforated image has been formed is bonded and fixed at 14 locations on the film. You may do it.

After the stencil printing plate 8 is attached to the stamp block 2 as described above, when the folded portion of the separator film 50 is sandwiched with fingers, the stencil printing plate 8 is laterally pulled out from the outlet 52, so that the lower piece 50b and the upper piece are separated. It is possible to pull out 50a in a state where they are in close contact with each other in a narrow gap portion of the outlet 52 (see FIG. 5 (b)). In that case, the ink adhering to the upper surface of the lower piece 50b and the lower surface of the upper piece 50a is not covered by the both pieces 50.
Since it is wrapped with a and 50b, the separator film 50 can be discarded without the ink sticking to the operator's finger or clothes and getting dirty.

After that, when the stamp block 2 is pressed on a paper surface or the like, an image (print surface) such as a predetermined character string can be printed. On the other hand, when the upper and lower surfaces of the frame body 12 of the stencil printing plate 8 are inserted reversely or when the frame body 12 is inserted with the front and rear sides thereof reversed (when the engaging portion 16 is located on the upstream side in the transport direction). Is
At the position where the tip of the stencil printing plate 8 contacts the gate 40, the plate spring 16 as the position fixing means cannot engage with the engaging portion 16. Therefore, the pushing back force by the pushing lever 42 acts to push back the stencil printing original plate 8 to the upstream side of conveyance. In such a case, the pressing lever 42 may cause the sensor 4
No. 5 does not emit a predetermined signal, so it is determined that the insertion posture is abnormal. In the case of this abnormality, or when the stencil printing plate 8 is not inserted, the plate making execution key 6 is pressed and the plate making is performed. No work is performed, and the display 5 displays an indication that the insertion is abnormal or that the stencil printing plate 8 has not been inserted.

Although not shown, the frame 12 has a rail-shaped projecting member 12a that projects vertically as in the above-described embodiment.
It may not be provided with. In the stencil printing plate 8 having the frame body 12 having such a structure, the wide-width surface portion of the heat-sensitive stencil sheet 15 after perforated image formation easily contacts other portions carelessly. Separator film 5
By storing and transporting the stencil printing plate 8 made with the 0 mounted, it is possible to completely prevent the ink from adhering to the operator or other parts.

When the stamping operation is repeatedly performed, when the film 14 is pressed downward by the cushion layer on the lower surface of the stamp block 2, the film 14 is pressed downward.
There is a problem that cracks (breakages) occur in the film 14 under the effect of repeated contact with the corner edges of the opening 11 and the bending force, but the upper surface of the frame 12 (the ink impermeable base material is used). Fatigue damage of the film 14 can be prevented by forming an inclined surface that is inclined downward toward the inner diameter of the opening 11 on the side to which the certain film 14 is bonded. Therefore, the separator film 50 may be arranged on the frame body 12 having such a configuration.

[0026]

As described above, in the stencil printing plate precursor of the present invention, the ink impregnated body is arranged in the opening of the frame, and the ink impermeability is sandwiched between the upper and lower surfaces of the ink impregnated body. In a stencil printing original plate in which a base material and a heat-sensitive stencil sheet are arranged in a laminated form and fixed to a frame body, a pair of upper and lower separator films abutting against the upper and lower surfaces of the ink impregnated body are abutted on the frame body. It is arranged so that it can be extracted from the extraction port provided on one side, and the extraction port is formed so that both inner surfaces of the upper and lower separator films come into contact with each other when the upper and lower separator films are extracted. The plate is made as it is, and if the separator film is taken out before the imprinting work, the ink from the ink impregnated body will remain while the separator film is attached to the stencil printing plate. It is possible to prevent that oozing in. When the separator film is pulled out from the outlet, the inner surfaces of the pair of upper and lower separator film pieces can be held in contact with each other, so that the ink adhering to the inner surface stains the clothes and other parts of the worker with the ink. This has the effect of completely eliminating the inconvenience.

[Brief description of drawings]

FIG. 1 is a perspective view of a stamp device.

FIG. 2 is a sectional view of a main part.

FIG. 3 is a perspective view of a main part in the plate making apparatus.

FIG. 4 is an exploded perspective view of a stencil printing original plate.

5A is a cross-sectional view of a main part of a stencil printing original plate, FIG.
FIG. 4 is a cross-sectional view of a state where a separator film is extracted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate making apparatus 2 Stamp block 8 Stencil printing plate 12 Frame 12a Projection member 13 Ink impregnation body 14 Film which is an ink impermeable base material 15 Heat-sensitive stencil sheet 22 Platen 23 Thermal head 50 Separator film 50a Upper piece 50b Lower piece 51 Slot 52 Outlet 53 Adhesive

Claims (1)

[Claims] 1. An ink impregnated body is arranged in an opening of a frame body, and an ink impermeable base material and a heat-sensitive stencil sheet are arranged in a laminated manner with the upper and lower surfaces of the ink impregnated body sandwiched therebetween to form a frame body. In a fixed stencil printing plate, a pair of upper and lower separator films abutting on the upper and lower surfaces of the ink impregnated body are arranged so as to be extractable from an extraction port provided on one side of the frame body, and the extraction port is An original plate for stencil printing, characterized in that the upper and lower separator films are formed so that their inner surfaces come into contact with each other when the separator films are taken out.