JPH0615259B2 - Roll type stencil printing base paper supply method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for supplying a roll-type heat-sensitive stencil printing base paper, and more specifically, a method for transporting the heat-sensitive stencil-printing base paper in a fully automatic heat-sensitive stencil-making printing apparatus, The present invention relates to a method for supplying a roll-type heat-sensitive stencil printing base paper for smoothly discharging a plate.

(Prior Art) A conventional full-automatic heat-sensitive stencil type plate making and printing apparatus (for example, Japanese Patent Laid-Open No. Sho 5
No. 9-96983), as shown in FIG. 3, a stretched thermoplastic synthetic resin film and a porous support are bonded together with an adhesive, and the film surface is prevented from being fused with the original 4. The heat-sensitive stencil printing base paper 1 coated with the release agent is wound into a roll with the film surface as the outer peripheral surface. This heat-sensitive hole printing base paper 1 wound in a roll
Is conveyed to the clamp means 9 of the plate cylinder 7 through the plate making portion 5 by the base paper conveying means (pinch roll) 3 and the conveying means 1
After being pressed by the clamp means 9 by 1, the plate cylinder 7 is rotated and then plate making is performed,
The heat-sensitive stencil printing base paper that has been heat-sensitized is wound around the outer peripheral surface of the plate cylinder 7, and the press roller 13 rotates to perform printing.

Next, when the base paper wrapped around the plate cylinder is peeled off from the plate cylinder (referred to as plate ejection), the heat sensitive stencil printing base paper is released from the clamp means 9 on the plate cylinder, and is installed diagonally above the plate cylinder 7. The stripping claw 15 releases the heat-sensitive stencil printing base paper having a slightly raised tip, and the roll means 19 guides the heat-sensitive stencil printing paper into the plate discharging device 17 to discharge the plate.

On the other hand, a conventional stencil sheet is manufactured so as to curl to the film side by adjusting the tension of the film when the film and the porous support are attached to each other. By providing a curl toward the film side, the thermal stencil printing base paper 1 is carried above the clamp means 9 by the carrying means 3 and the blowing means 11 is provided.
It is pressed against the clamp means 9 by and is clamped smoothly. Further, even when the plate is discharged, the plate is appropriately lifted so that the stencil sheet is caught by the stripping claws 15 when released from the clamp means 9, so that the plate is smoothly discharged.

(Problems to be Solved by the Invention) Such a conventional technique has the following problems.

(1) The front end of the thermal stencil printing base paper may be caught in front of the clamp means 9 and may not be carried to the clamp means 9.

(2) When the plate is discharged, the released heat-sensitive stencil printing base paper may not be caught by the peeling claw 15 and may not be discharged. The above (1) and (2) are particularly likely to occur in a heated room in winter.

(3) The rubber in the air adheres to the heat-sensitive stencil printing base paper 1 wound in a roll, and the dust is heated during the plate making, resulting in the formation of minute holes in the stencil base paper, which contaminates the printed matter. There is. The cause is considered to be that static electricity of the film on the surface of the roll-type heat-sensitive stencil sheet is generated and dust in the air is attached.

When the causes of these problems (1) and (2) were examined, it was found that the degree of curling of the stencil sheet changed. That is, the stencil sheet may not curl in a heated room in winter when the humidity is low and the temperature is relatively high. The reason for this is not clear, but it is considered that the film is not hard because the water content in the porous support is lost, the porous support contracts, and the temperature is relatively high.

As a means to solve this problem, it was considered to adjust the degree of curl on the film side at the time of production, but this adjustment is very delicate, and there is a problem of curling too much on the film side, It wasn't practical.

The object of the present invention is to minimize the influence of humidity and temperature of the heat-sensitive stencil printing paper in the fully automatic heat-sensitive stencil plate-making printing, prevent troubles such as paper jam at the time of transport and plate discharge, and dust adhesion. It is an object of the present invention to provide a method for supplying a roll-type heat-sensitive stencil printing base paper in which the printed matter is prevented from being stained.

(Means for Solving Problems) The present inventors have proposed a conventional roll-type heat-sensitive stencil printing base paper as follows.
Paying attention to the fact that the film side is wound so that the surface side (outer peripheral surface) side, and that curling to the film side is less likely to occur, this is the reverse winding, that is, the roll type with the porous support side as the surface. When the base paper for heat-sensitive stencil printing is used, the film side of the base paper for heat-sensitive stencil printing is on the inner side, so that the film is easily wound around, and an appropriate curl to the film side is obtained. The present invention has been achieved by finding that the problem of (1) is solved. Regarding the problem (3), since the surface of the roll-type heat-sensitive stencil printing paper is a porous support (Japanese paper, gauze, etc.),
Static electricity is less likely to be generated, dust in the air is less likely to adhere, and even a slight amount of adherence is on the side of the porous support, so there is almost no effect during plate making, which has been solved.

That is, the present invention, a thermoplastic synthetic resin film and a porous support bonded together, the front end of the roll-type heat-sensitive stencil printing paper rolled into a roll, a plate-making portion for making the base paper, and the base paper Is conveyed to the clamp means attached to the plate cylinder, and a blowing means for pressing the leading end of the raw paper against the clamp means by blowing air is pressed against the clamp means to clamp, and the plate is made by rotation of the plate cylinder. In a method for supplying a roll-type heat-sensitive stencil printing base paper in a fully automatic heat-sensitive stencil-making printing, in which the rolled base paper is wrapped around the outer peripheral surface of the plate cylinder and printed, a porous support is used as the roll-type heat-sensitive stencil printing base paper. The thermoplastic synthetic resin film surface is the upper surface, and the porous support side is in contact with the outer peripheral surface of the plate cylinder. And supplying to said clamping means as vignetting.

Further, the present invention is a roll-type heat-sensitive stencil printing base paper, which is obtained by laminating a thermoplastic synthetic resin film and a porous support, is rolled into a roll, and is transported toward the plate cylinder by a transport means. Then, the leading end of the conveyed raw paper is clamped by the clamp means attached to the plate cylinder, the raw paper is wound around the outer peripheral surface of the plate cylinder by the rotation of the plate cylinder, printed, and then wound around the plate cylinder. In the method of supplying the roll-type heat-sensitive stencil printing base paper in the fully-automatic heat-sensitive stencil-making printing, the used heat-sensitive stencil printing base paper that is attached is peeled off with a peeling nail and discharged. A roll is used so that the porous support is the surface (outer peripheral surface), the thermoplastic synthetic resin film surface is the top surface of the leading end of the base paper, and the porous support side is the outer peripheral surface of the plate cylinder. Between the porous support side of the used heat-sensitive stencil printing paper wound around the plate cylinder of the stripping claw and the plate cylinder after the printing is completed. The used heat-sensitive stencil printing base paper is peeled off and discharged.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

FIG. 1 is an explanatory diagram of a main part of a fully automatic heat-sensitive stencil plate-making and printing apparatus showing an embodiment of the present invention. This apparatus comprises a clamp means 9 for locking one end of a heat-sensitive stencil printing base paper provided on the outer peripheral surface of a plate cylinder 7, a heat-sensitive stencil printing base paper 1 wound in a roll, and a means 9 for clamping the base paper. A transporting means 3 for carrying up to, a blowing means 11 for pressing the conveyed heat-sensitive stencil printing base paper against the clamping means 9 by means of air blowing, and a used for discharging the used heat-sensitive stencil printing base paper wound around the plate cylinder 7. A heat-sensitive stencil printing base paper 1 which has a plate discharging means 17 having a stripping claw 15 and is wound in a roll shape.
Is wound so that the porous support side 1A is the surface (outer peripheral surface), the thermoplastic synthetic resin film surface is the upper surface, and the porous support side is the outer peripheral surface of the plate cylinder, as shown in FIG. It is supplied so that it can be wound in contact with.

(Effects of the Invention) In the present invention, as described above, by using the roll wound so that the porous support side 1A of the roll-type heat-sensitive stencil printing paper 1 is on the outside and the film side 1B is on the inside. Since the curl to the film side 1B is easier than in the conventional case and a proper curl to the film side is obtained, the front end of the stencil sheet is caught in front of the clamp means 9 during conveyance in the fully automatic heat-sensitive stencil plate-making printing. Or, again when printing out,
The released stencil sheet is not caught by the stripping claws 15 and is not discharged, and since the surface of the stencil sheet is a porous support (hygroscopic material such as Japanese paper), static electricity is less likely to occur and the It also makes it difficult for dust to adhere, so
It is possible to prevent minute perforations due to dust or the like during plate making.

Hereinafter, specific examples of the present invention will be described.

(Example 1) Polyester film (PET) 2μ and 8.5 g / m ² Manila hemp paper were pasted together with a urethane adhesive to obtain a polyester system film, which was coated with a release agent (surfactant) to obtain heat sensitivity. A stencil sheet is wound so that the Manila hemp thin paper side is the surface (outer side), and a roll-type heat-sensitive stencil sheet is used, and under the environment of 25 ° C and a humidity of 28%, a fully automatic heat-sensitive stencil printing apparatus lithograph 007 shown in FIG. (Made by Riso Kagaku Kogyo Co., Ltd.) 100 times plate making (including transportation process),
When the plate was discharged, there was no single failure in conveyance due to the trouble of the clamp means 9 being caught, and there was only one error in discharging the plate due to passage of the peeling claw 15. The roll-type heat-sensitive stencil sheet was loaded in the lithograph 007 and left for 4 weeks, and then plate-making printing was performed, but no stain on the printing surface due to dust adhesion was observed.

(Comparative Example) A roll-type heat-sensitive stencil printing paper obtained by winding the same heat-sensitive stencil printing paper as in the above-mentioned embodiment so that the polyester film is on the surface (outside) in a fully automatic heat-sensitive stencil printing machine at 25 ° C and 28% humidity Lithograph 007 (made by Riso Kagaku Kogyo Co., Ltd.)
When the plate was made 100 times and discharged, the conveyance failure due to the catching of the clamp means 9 occurred 10 times, and the plate discharge error was 17 times. The roll-type heat-sensitive stencil sheet was loaded into a lithograph 007 and left for 4 weeks to make a plate.
When printing was performed, some stains on the printed surface due to dust adhesion were observed.

[Brief description of drawings]

1 and 3 are explanatory views of the present invention and a conventional full-automatic heat-sensitive stencil-making plate making machine, respectively, and FIG. 2 is a perspective view of a roll-type heat-sensitive stencil printing base paper of the present invention. 1 ... Roll-type heat-sensitive stencil printing base paper, 1A ... Porous support side, 1B ... Film side, 3 ... Conveying means, 4 ...
Manuscript, 5 ... plate making part, 7 ... plate cylinder, 9 ... clamping means, 11 ... air blowing means, 13 ... press roller, 15 ...
… Stripping claws, 17… plate ejection device.

Claims (2)

[Claims] 1. A front end portion of a roll-type heat-sensitive stencil printing base paper, which is obtained by laminating a thermoplastic synthetic resin film and a porous support, on a roll-shaped heat-sensitive stencil printing plate. The conveying means for conveying to the clamp means attached to the plate cylinder and the air blowing means for pressing the leading end of the raw paper against the clamp means by the air blow presses and clamps the clamping means, and the plate cylinder is rotated to make the plate. In a method for supplying a roll-type heat-sensitive stencil printing base paper in a fully automatic heat-sensitive stencil-type plate-making printing in which the base paper is wound around the outer peripheral surface of the plate cylinder and printed, a porous support is used as the roll-type heat-sensitive stencil printing base paper. ), The front end of the base paper is wrapped with the thermoplastic synthetic resin film surface as the upper surface and the porous support side in contact with the outer peripheral surface of the plate cylinder. Roll thermal stencil sheet supply method, characterized by supplying to said clamping means so. 2. A roll-type roll-type heat-sensitive stencil printing base paper laminated with a thermoplastic synthetic resin film and a porous support is made by a plate making means and conveyed to a plate cylinder by a conveying means. Then, the leading end of the conveyed raw paper is clamped by the clamp means attached to the plate cylinder, the raw paper is wound around the outer peripheral surface of the plate cylinder by the rotation of the plate cylinder, printed, and then wound around the plate cylinder. In the method of supplying the roll-type heat-sensitive stencil printing base paper in the fully-automatic heat-sensitive stencil-making printing, the used heat-sensitive stencil printing base paper that is attached is peeled off with a peeling nail and discharged. Using a roll wound so that the porous support is the surface (outer peripheral surface), the thermoplastic synthetic resin film surface is the upper surface of the front end of the base paper, and the porous support side is in contact with the outer peripheral surface of the plate cylinder. Is supplied to the clamp means so that it can be wound around, and after printing, the peeling claw is wound between the plate cylinder and the porous support side of the used heat-sensitive stencil printing paper wound around the plate cylinder. A method for supplying a roll-type heat-sensitive stencil printing base paper, characterized in that the used heat-sensitive stencil printing base paper is made to enter and stripped and discharged.