JPH0217889Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to the field of thermal stencil printing devices, and particularly to a printing paper positioning device for thermal stencil printing devices.

Background of the invention As a method of stencil printing, Utility Application No. 51306 (1983) filed by the same applicant as the present applicant was proposed.
132007), which includes a frame-shaped frame 26 made of cardboard and a frame 2 as shown in FIG. 1 of the present application.
6, and an ink-impermeable ink cover sheet 28 that is partially attached to the other side of the frame 26 so as to be openable and closable. Using a stencil printing original plate 25, its stencil printing stencil paper 27 and ink cover sheet 28
It is known that a relatively hard printing ink is applied between the stencil printing base paper 27 and the surface of the stencil printing base paper 27 is pressed against the printing paper to obtain a large number of stencil prints without replenishing ink for each printing paper. A stencil printing device which is convenient for carrying out stencil printing in the manner described above using such a stencil printing master plate was disclosed in Utility Model Application No. 114235/1983 (Kokoku Utility Model No. 57-15814) filed by the same applicant as the present applicant. It was proposed in 2013 and is also used for printing New Year's cards, etc. under the product name ``Print Gotsuko.''

In the stencil printing apparatus proposed in the above-mentioned Utility Model Publication No. 57-15814, a light irradiation window for performing thermal perforation of a stencil printing original plate and a light source device for irradiating light through the light irradiation window are provided. It is provided on a press plate that is pivotally supported at one end of the base and pivots relative to the base, and during printing, the printing paper is placed on the elastic printing paper support plate provided on the base. It's becoming like that. Such resilient printing paper support plates are usually made of a structure having a surface such as foamed resin that exhibits considerable contact friction resistance against the printing paper, and the printing paper is placed on the printing paper support during printing. When placed, the printing paper changes its position depending on the movement of the hand nearby or the air turbulence around the printing paper caused by moving the pressure plate toward the printing paper during printing. It is held stable enough to the extent that it does not occur. In this way, when the press plate is pulled up after the stencil printing original is pressed against the printing paper placed on the printing paper support stand, the printing paper will stick to the stencil printing original due to the viscosity of the ink. In view of the inconvenience of having to peel off the printing paper from the stencil printing master each time, the surface of the printing paper support is made of an adhesive plate that exhibits adhesiveness to the printing paper. The same applicant as the present applicant focused on the fact that the center of a printed image tends to be thinner than the periphery, and in order to avoid this, a groove is provided in the center of the adhesive plate to release surface tension. Utility Application No. 56-156763 (Utility Application No. 63-6864)
When the printing paper is placed on a printing paper support having such an adhesive surface, the printing paper is held even more reliably during printing.

However, this time, the applicant has developed a conventional stencil printing device in which a light irradiation window for perforating a stencil printing original is provided on a pressure plate that pivots to open and close relative to the base and is pressed from above, as described above. Unlike the above, we have devised a stencil printing device in which a part of the upper surface of the base is made of a glass light transmitting plate, and a light source device is built into the base below the light transmitting plate. Japanese Patent Application No. 59-103282 (Japanese Patent Application Laid-open No. 60-247587) and Patent Application No. 59-103283 (Japanese Patent Laid-Open No. 60-247588)
proposed at.

This new proposed thermal stencil printing device is
A light irradiation window that forms a part of the upper surface of the base and irradiates light emitted from a light source device incorporated in the base is constituted by a light transmitting plate made of glass, and is placed on the light transmitting plate. After thermal perforation is performed on the thermal stencil blank by the light source device, the perforated thermal stencil blank is attached to a pressing plate via a pad, and printing is performed on the printing paper placed on the light transmitting plate. There is.
In such a thermal stencil printing device, the light source device can be stably incorporated into the base, and the weight distribution between the base and the pressing plate can be shifted to the side of the base compared to the conventional stencil printing device as described above. This has the advantage that the stability of the device during operation can be further increased due to the ability to transfer more paper, but during printing the printing paper is placed on a light-transmitting plate made of glass. Therefore, the friction of the printing paper support surface against the printing paper is small, and the paper placed on the light transmission plate moves easily due to air turbulence caused by hand movements or the movement of the press plate for printing. Even if the printing paper is initially placed correctly on the light-transmitting plate, there is a high risk that the printed image will be deviated from the predetermined position.

Purpose of the invention The present invention addresses the problem of misalignment of printing paper during printing in a new thermal stencil printing device having the above configuration, and is adapted to the characteristics of the thermal stencil printing device with such a special configuration. An object of the present invention is to provide a printing paper positioning device that can stably hold printing paper during printing.

According to the present invention, an object of the present invention is to provide a printing paper positioning device for a thermal stencil printing apparatus having a special structure as described above, and to provide a printing paper positioning device for a thermal stencil printing device having a special configuration as described above, which includes a plate-shaped portion on which the printing paper is placed, and a a stopper portion that engages with an edge of printing paper placed on the plate to position the printing paper with respect to the plate-shaped portion; and the plate-shaped portion is made of a material that exhibits high contact friction resistance against a glass surface. and an anti-slip sheet that is attached to the side opposite to the side on which the printing paper is placed and is seated on the light transmitting plate to frictionally position the plate-like part with respect to the light transmitting plate. This is achieved by the characteristic printing paper positioning device.

Effects of the invention Materials such as soft polyvinyl chloride, soft polyvinylidene chloride, polyurethane resin, polyethylene resin, and rubber exhibit high contact friction resistance against glass surfaces, so printing A printing paper positioning device is manufactured which includes a stopper portion that engages with the edge of the paper to position the printing paper with respect to the plate-shaped portion, and a stopper portion that engages with the edge of the paper to position the printing paper with respect to the plate-shaped portion is made, and a stopper portion is provided on the opposite side of the plate-shaped portion from the side on which the printing paper is placed. An anti-slip sheet made of a material exhibiting high contact friction resistance against the glass surface as described above is provided on the side, and the printing paper positioning device is seated on the glass light transmitting plate using this anti-slip sheet. For example, simply by placing the printing paper positioning device on the light transmitting plate, the printing paper positioning device is stably held on the light transmitting plate. Of course, the above-mentioned materials exhibiting high contact frictional resistance against the glass surface will adhere to the glass surface with high contact frictional resistance when they come into contact with the glass surface, but will not adhere to the glass surface and will not adhere to the glass surface in the direction perpendicular to the glass surface. When lifted, it easily separates from this without leaving any trace of contact. Therefore, by using a printing paper positioning device equipped with such a non-slip sheet, the printing paper can be reliably attached to the base with arbitrary fine adjustments, and stencil printing can be achieved with a high degree of positioning accuracy. .

DESCRIPTION OF EMBODIMENTS The present invention will now be described in detail with reference to embodiments with reference to the accompanying drawings.

FIGS. 1 and 2 show an example of a thermal stencil printing apparatus equipped with an embodiment of a printing paper positioning device according to the present invention. In these figures, 1
1 shows a box-shaped base, which has a light irradiation window made of a light transmitting plate 3 made of a transparent glass plate on the top so that it can also be used as a thermal plate-making device, and has a pre-fabricated plate inside. The light source device 4 includes a light source device 4 such as a discharge tube, a reflecting mirror 5, and a power supply device (not shown) for the light source device 4. The light source device 4 emits light when supplied with power from the power supply device, and emits light toward a light irradiation window formed by the light transmitting plate 3. Further, the base 1 is provided with a plate making power switch 21.

The base 1 rotatably supports one end edge of the press plate 7 by means of a pivot 6. The pressing plate 7 has a pad 9 forming a pressing surface portion 8 on the side facing the light transmitting plate 3.
is attached by the mounting pin 10, and the pressing surface part 8
It is designed to be able to rotate relative to the base 1 around the pivot shaft 6 between a pressing position where the pressing surface portion 8 is pressed against the light transmitting plate 3 and an open position where the pressing surface portion 8 is separated from the light transmitting plate 3.

The pad 9 has a cushion plate 11 and an original support element 12 having a groove-shaped cross section provided along both parallel side edges of the cushion plate 11. 25 is detachably supported.

As mentioned above, the master plate 25 for stencil printing may be the master plate for printing as proposed in Utility Application No. 51-51306 (Utility Model Application No. 132007-1987) filed by the same applicant as the present applicant. , a frame-shaped frame 26 made of cardboard, a heat-sensitive stencil printing base paper 27 attached to one side of the frame 26, and an openable/closeable attached to the other side of the frame 26. It consists of an ink cover sheet 28 that is impermeable to ink, and relatively hard printing ink can be stored between the stencil printing base paper 27 and the ink cover sheet 28 inside the frame 26.

A printing paper positioning device 13 according to the present invention is placed on the light transmitting plate 3 of the base 1. As shown in FIGS. 1 to 3, this printing paper positioning device 13 includes a flat plate-like part 14 on which the printing paper P is placed, and a part that protrudes along the side edge of the plate-like part 14. It has a linear positioning stopper portion 15 formed therein. The positioning stopper part 15 forms a locking groove 15a between the positioning stopper part 15 and the upper surface of the plate-like part 14, which receives one end edge of the printing paper P. The bottom surface of the plate-shaped portion 14, that is, the surface in contact with the light-transmitting plate 3, is made of soft polyvinyl chloride, soft polyvinylidene chloride, polyurethane resin, polyethylene resin, rubber, or a rubber-like material with appropriate elasticity and similar to the glass surface. On the other hand, an anti-slip sheet 19 exhibiting high contact frictional resistance is attached.

The printing paper positioning device 13 is mounted on the base 1 so that the anti-slip sheet 19 is in contact with the light transmitting plate 3.
The base 1 is placed on top of the base 1 due to the frictional resistance caused by the contact between the anti-slip sheet 19 and the light transmitting plate 3.
It is locked to the base 1 in any position and direction. The printing paper positioning device 13 is configured such that the printing paper P is placed on the plate-shaped portion 14 and one edge thereof is pressed against the positioning stopper portion 15.
The printing paper P is positioned relative to the light transmitting plate 3. In this embodiment, one end of the printing paper P is inserted into the locking groove 15a, so that the printing paper P is not easily damaged by the viscosity of the printing ink when the press plate 7 is released after stencil printing. It is attached to the stencil printing original plate 25 to prevent it from floating above the positioning member 13.

4 to 8 show another embodiment of the printing paper positioning device according to the present invention. still,
In these figures, parts corresponding to those in FIGS. 1 to 3 are designated by the same reference numerals as those in FIGS. 1 to 3.

In this second embodiment, leg portions 16 are provided at both ends of the plate-like portion 14, respectively. Leg piece 1
6 face each other in a direction perpendicular to the plate-like part 14 and on the opposite side from the positioning stopper part 15,
Each of its opposing surfaces integrally has a triangular locking piece 17 protruding in a direction approaching each other, and the top or tip of the locking piece has a semicircular locking end 1.
8 are integrally formed.

There are end walls on both sides of the base 1 that extend in a direction perpendicular to the surface of the light transmitting plate 3, and a pair of guide grooves that extend parallel to each other in the front-rear direction of the base 1 are provided on these end walls. 20 is formed.

The printing paper positioning device 13 is placed on the light transmitting plate 3 of the base 1, is fitted into the guide groove 20 with the locking pieces 17 at both ends, and is guided by the semicircular locking ends 18. It is pressed against the bottom surface of the groove 20 and is attached to the base 1 in substantially point contact therewith.

The printing paper positioning device 13 can move in parallel on the base 1 in the front and back direction along the guide groove 20, and further has two semicircular locking ends 18 as shown in FIG. The anti-slip sheet 19 can be tilted on the light transmitting plate 3 with respect to the base 1 using one of the pivot points as a pivot point.
The light transmitting plate 3 is secured to the base 1 by high frictional contact between the light transmitting plate 3 and the light transmitting plate 3. As mentioned above,
Since the printing paper positioning device 13 is locked at an arbitrary position with respect to the base 1 by contact friction, the printing paper P can be moved to the light transmitting plate 3 at any suitable position and direction.
can be positioned against.

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

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of a thermal stencil printing device equipped with a printing paper positioning device according to the present invention, and FIG. 2 is a perspective view showing an embodiment of a thermal stencil printing device equipped with a printing paper positioning device according to the present invention shown in FIG. FIG. 3 is a side view of the printing positioning device according to the present invention, and FIG. 4 is a longitudinal cross-sectional view of the main parts of a thermal stencil printing device. FIG. FIG. 5 is a bottom view of the printing paper positioning device shown in FIG. 4, and FIG. 6 is a perspective view showing another example of the stencil printing device. FIGS. 7 and 8 are a front view and a cross-section of a part of the thermal stencil printing apparatus, respectively, and are plan views showing how the printing paper positioning device shown in FIGS. 4 to 6 is used. 1...Base, 3...Light transmission plate, 4...Light source device, 5...Reflector, 6...Pivot, 7...Press plate,
8...Press surface portion, 9...Pad, 10...Mounting pin, 11...Cushion plate, 12...Original support element, 13...Printing paper positioning device, 14...Plate-shaped portion, 15...For positioning Stop part, 16...
Leg piece portion, 17... Locking piece portion, 18... Semicircular locking end portion, 19... Anti-slip sheet, 20... Guide groove,
21... Plate making power switch, 25... Original plate for stencil printing, 26... Frame, 27... Heat-sensitive stencil printing paper, 28... Ink cover sheet.

Claims (1)

[Scope of utility model registration request] It has a base 1 and a pressure plate 7 pivotally supported at one end of the base, and is emitted from a light source device 4 that forms a part of the upper surface of the base and is incorporated into the base. A light irradiation window for irradiating light is constituted by a light transmitting plate 3 made of glass, and after the heat-sensitive stencil plate placed on the light-transmitting plate is thermally perforated by the light source device, the perforated thermal stencil master is A plate on which printing paper is placed, as a printing paper positioning device for a thermal stencil printing device, which is attached to a pressure plate via a pad 9 and configured to print on printing paper placed on the light-transmitting plate. a stopper part 15 that engages with the edge of the printing paper placed on the plate-shaped part to position the printing paper with respect to the plate-shaped part, and a stopper part 15 that has a high contact friction resistance against the glass surface. The plate-shaped portion is made of a material exhibiting the following properties, is attached to the opposite side of the plate-shaped portion from the side on which the printing paper is placed, and is seated on the light-transmitting plate to frictionally position the plate-shaped portion with respect to the light-transmitting plate. A printing paper positioning device characterized by having a non-slip sheet 19.