JPH07314936A - Mimeographic printing method and thermosensible stencil - Google Patents

Abstract

PURPOSE:To easily supply printing ink to the mimeographic part of a heat melting synthetic resin film without hindering the passage of printing ink and to obtain a clear printing image. CONSTITUTION:In a mimeographic printing method using a thermosensible stencil 1 comprising an ink passing sheet 2 bonded with an adhesive and a heat melting synthetic resin film 3, after a mimeographic image composed of a large number of independent non-continuous points being formed by a mimeographic image forming means in the thermoplastic synthetic resin film 3, the ink passing sheet 2 and the heat melting synthetic resin film 3 are separated, and mimeographic printing is conducted on a sheet to be printed by passing the mimeographic image by supplying printing ink from the side of the ink passing sheet 2. In a thermosensible stencil comprising the ink passing sheet 2 bonded with an adhesive and the heat melting synthetic resin film 3, a thermosensible stencil is obtained which is dissolved by the printing ink for supplying the adhesive to the thermosensible stencil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing method and a heat-sensitive stencil printing base paper, and more particularly to a stencil printing method capable of easily obtaining a stencil printed matter having high printing clarity and a heat-sensitive material used in this method. The present invention relates to a stencil printing base paper.

[0002]

2. Description of the Related Art Conventionally, a heat-sensitive stencil printing base paper is composed of a synthetic fiber knitted screen or natural fiber,
It is obtained by joining an ink-permeable sheet such as Japanese paper made of synthetic fibers or a mixed fiber thereof and a heat-meltable synthetic resin film with an adhesive. The joining of the ink-permeable sheet and the heat-meltable synthetic resin film with an adhesive is carried out by superposing these sheets and the film, applying an adhesive solution from the sheet side and adhering them, or an ink-permeable sheet or An adhesive is applied to the surface of the heat-meltable synthetic resin film, and the heat-meltable synthetic resin film or the ink-permeable sheet is superposed, pressed and bonded.

The heat-sensitive stencil printing base paper is formed by forming a perforated image by heating and melting a heat-meltable synthetic resin film with a thermal head, laser light or the like, and printing ink is supplied from the ink permeable sheet side. Then, stencil printing is performed on a printing paper such as a paper to be printed. The ink-permeable sheet, (1) improve the handleability and transportability of the mechanically weak heat-meltable synthetic resin film, (2) formed as a perforated image on the heat-meltable synthetic resin film,
For example, in the white circle figure “○”, in order to prevent the film inside the part completely surrounded by the line from falling off and filling the entire inside of the circle with ink, the film inside the part surrounded by the line falls out. (3) When the heat-meltable synthetic resin film is heated and perforated, it facilitates the film melt in the heating section to escape in the horizontal direction to facilitate perforation of the film. , Has an important role such as.

However, since the ink-permeable sheet is bonded to the heat-melting synthetic resin film with an adhesive, the printing ink is prevented from moving horizontally to the film surface at this bonding portion, and The flow of printing ink into the perforated portion of the film is hindered. In addition, since the ink-permeable sheet is composed of natural fibers or synthetic fibers, there is a binding part in which the fibers are partially aggregated, and this binding part is a film of printing ink in the perforated part. It has the drawback of impeding the vertical movement with respect to the surface, ie the passage of printing ink. For this reason, there was a problem that the supply of printing ink to the perforated portion of the heat-meltable synthetic resin film was insufficient, a white portion where ink was not transferred was formed in the printed image portion of the printing paper, and the printed image became unclear. .

In order to eliminate such a factor that impedes the movement of the ink due to the ink permeable sheet, a high pressure is applied to the printing ink to increase the amount of ink passing through the ink permeable sheet to prevent insufficient ink supply to the perforated portion. It is being resolved. However, when the pressure of the printing ink is increased, there is a problem that the amount of ink passing through the perforated part where the fiber binding part is small increases, the amount of ink transferred to the printing paper becomes excessive, and the sharpness of the printed image deteriorates. It was Further, as a method of preventing the deterioration of the sharpness of the printed image due to the presence of the ink permeable sheet, after making the heat-sensitive stencil sheet, the porous support and the thermoplastic resin film are peeled off, and only the thermoplastic resin film is printed by the printing device. An apparatus has been proposed for performing stencil printing by setting it on a sheet (Japanese Patent Laid-Open No. 5-318900). However, this device requires a new step for peeling the porous support and the thermoplastic resin film after plate making, and wrinkles are formed on the thermoplastic resin film when the thermoplastic resin film is set in the printing device. There are problems such as easy occurrence.

[0006]

The object of the present invention is to solve the above-mentioned problems of the prior art and to easily supply the printing ink to the perforated portion of the heat-meltable synthetic resin film without obstructing the passage of the printing ink. Another object of the present invention is to provide a stencil printing method capable of obtaining a clear printed image and a heat-sensitive stencil printing base paper used in this method.

[0007]

Means for Solving the Problems As a result of intensive studies on the above problems, the present inventors have found that if a perforated image formed on a heat-meltable synthetic resin film is composed of a large number of independent and discontinuous perforated portions. Paying attention to the fact that the film inside the part surrounded by the line does not fall out and that the ink permeable sheet is essentially unnecessary at the printing stage, the handling of the heat-sensitive stencil printing base paper In the required plate-making step, the state in which the ink-permeable sheet and the heat-meltable synthetic resin film are bonded is maintained, and in the printing step in which printing ink is supplied, an adhesive agent that bonds the sheet and the film. The stencil is melted, and stencil printing is performed in a state where these are uniformly separated, so that the supply of printing ink to the perforated part of the heat-meltable synthetic resin film is obstructed at the joint part of the adhesive and the fiber bundling part. Found that it is possible to not easily carried out be, we have reached the present invention.

The invention claimed in this application is as follows. (1) In a stencil printing method in which stencil printing is performed using a heat-sensitive stencil printing base paper consisting of an ink-permeable sheet and a heat-meltable synthetic resin film, which are bonded to each other with an adhesive,
After forming a perforated image consisting of a number of discrete discontinuous points in a dot-like manner on the thermoplastic synthetic resin film by means of a perforated image forming means, the ink-permeable sheet and the heat-meltable synthetic resin film are separated and printed. A stencil printing method, wherein ink is supplied from the ink permeable sheet side to allow the perforated image to pass therethrough to perform stencil printing on a printing medium. (2) The heat-permeable stencil sheet on which the perforated image is formed by the perforated image forming means is separated from the heat-meltable synthetic resin film by the printing ink supplied from the ink-permeable sheet side. (1) The stencil printing method according to (1). (3) In a heat-sensitive stencil printing base paper consisting of an ink-permeable sheet and a heat-meltable synthetic resin film which are adhered to each other with an adhesive, the adhesive is formed by printing ink supplied to the heat-sensitive stencil printing base paper. A heat-sensitive stencil printing base paper characterized by being dissolved. (4) The heat-sensitive stencil printing according to (3), characterized in that the adhesive is mainly composed of a water-soluble resin dissolved by a water component in the printing ink supplied to the heat-sensitive stencil printing base paper. Base paper.

The present invention will be described below with reference to the drawings. Figure 1
FIG. 2A is a cross-sectional view (A) of a heat-sensitive stencil printing base paper used in the stencil printing method of the present invention and a state explanatory view (B) at the time of printing of the heat-sensitive stencil printing base paper. 1 (A) and 1 (B), a heat-sensitive stencil printing base paper 1 comprises an adhesive 4 in which an ink-permeable sheet 2 composed of fibers 9 and a heat-meltable synthetic resin film 3 are dissolved by a printing ink. It has been adhered by. The base paper 1 is heated and melted in a dot shape by a thermal head (not shown), laser light, or the like to form a perforated portion 7. The perforated portion 7 is formed as an independent discontinuous point, and a large number of the perforated portions 7 are formed. A perforation image is constituted by a set of. When the perforated portion 7 forming the perforated image is continuous, for example, when the plate 2 is separated from the sheet 2 during printing when plate making is performed by heat generated in the original image by light irradiation, Since the perforated image is formed by continuous holes, the film inside the part surrounded by the line falls off, and a clear printed image cannot be obtained.

When the printing ink 8 is supplied from the ink permeable sheet 2 side of the perforated heat sensitive stencil sheet 1,
The adhesive 4 of the base paper 1 is dissolved by the supplied printing ink 8 to separate the ink permeable sheet 2 and the heat-meltable synthetic resin film 3. As a result, even if there is a portion where the fibers 9 are bound in the ink permeable sheet, the printing ink 8 that has passed through the ink permeable sheet moves horizontally on the surface of the film 3 to form the ink layer 5. Formed and film 3
The printing ink 8 is easily supplied to the perforated portion 7.
In this way, the printed image on which the printing ink 8 is transferred onto the printing paper 6 and printed is not formed with a white portion where the ink is not transferred, so that a clear printed image can be obtained. The melted adhesive 4 passes through the perforations 7 together with the printing ink 8 and is transferred to the printing paper 6.

It should be noted that FIG. 1 is exaggerated for the sake of explanation. As will be described later, the heat-meltable synthetic resin film 3
The thickness of the adhesive 4 is extremely thin as compared with the thickness of the ink permeable sheet 2, and the fibers 9 of the ink permeable sheet are
May be regarded as a structure in which the film 3 is substantially in contact with and adhered to the film 3. Also, the ink layer 5 shown in FIG.
Like the adhesive 4, it is extremely thin as compared with the thickness of the ink permeable sheet 2.

As the ink permeable sheet 2, a conventionally known porous sheet is used, but in the case of Japanese paper made of natural fibers or synthetic fibers, it is knitted in a lattice shape made of synthetic fibers of 30 to 50 μm. 5 for screen
Those having a thickness of about 0 to 100 μm are preferably used. As the hot-melt synthetic resin film 3, a conventionally known film of polyester, polyethylene, polypropylene or the like is used, and the thickness thereof is usually 0.5 to 20.
The thickness is about μm, preferably 0.5 to 10 μm. The perforated image formed in the film 3 is composed of a large number of discrete dot-shaped perforated portions 7 which are independent by the thermal head, the laser beam or the like as described above. The size of the perforated portion 7 is usually 60 μm or less, preferably 45 μm or less, although it depends on the size of the heating element when a thermal head is used. The adhesive may be any adhesive as long as it dissolves in the printing ink used, and is appropriately selected and used. Especially when using emulsion ink as printing ink,
It is preferable to use a water-soluble resin that dissolves in the water component in the emulsion ink as an adhesive. In addition, the base paper using a water-soluble adhesive can be easily completely separated from the film 3 and the sheet 2 by sprinkling water on the used or discarded heat-sensitive stencil base paper. It is also preferable from the standpoint of retention and environment. The thickness of the adhesive 4 is usually 1.0 μm or less.

In FIG. 2, a heat-sensitive stencil sheet 1 prepared by coating an adhesive 4 on a film 3 used in the present invention and adhering an ink permeable sheet 2 is punched in a dot shape by a thermal head. FIG. 3 is a copy of a micrograph of this surface magnified 200 times from the heat-meltable synthetic resin film 3 side. Film 3 of perforated heat-sensitive stencil sheet 1
Has a large number of perforated portions 7, and the ink permeable sheet 2 is present behind the perforated portions 7. However, the ink permeable sheet 2 has fibers of an ink permeable sheet that impede the passage of ink. There is a binding portion 9a. In the present invention, the printing ink enters between the separated heat-meltable synthetic resin film 3 and the ink permeable sheet 2, the printing ink moves horizontally on the surface of the film 3 and flows into the perforated portion 7. In order to
The presence of the fiber binding portion 9a does not affect the passage of the printing ink in the perforated portion.

FIG. 3 is a block diagram of a stencil printing apparatus used in the stencil printing method of the present invention. This stencil printer
Thermal head 10 for perforating heat-sensitive stencil printing base paper 1.
A plate cylinder 12 around which the perforated heat-sensitive stencil sheet 1 is wound, an ink coating roller 26 and a squeegee roller 25 provided inside the plate cylinder 12, and a heat sensitive film wound around the plate cylinder 12. Paper feeding roller 2 for feeding the printing paper 19 to the surface of the plate cylinder 12 in response to the rotation of the stencil printing base paper 1.
0 and a pair of paper conveying rollers 23, and a printing pressure roller 24 for pressing the supplied printing paper 19 against the surface of the plate cylinder 12.
And a plate discharge claw 14 and a plate discharge box 15 that remove the used base paper after printing from the plate cylinder 12 and discharge the plate.

In such a construction, the heat-sensitive stencil printing base paper (hereinafter sometimes abbreviated as "base paper") 1 is an ink-permeable sheet (hereinafter sometimes abbreviated as "sheet") 2. On the outside, a heat-meltable synthetic resin film (hereinafter,
The film may be abbreviated as "film") 3 and is wound in a roll shape. The base paper 1 is conveyed by the platen roller 3 so that the film side is in close contact with the thermal head 10, and is plate-made by the thermal head 10 to form a perforated image composed of a number of discontinuous perforation portions.
The thermal head 10 is a known one in which a large number of heating elements are formed in a line shape, and each heating element is selectively heat-controlled by a heating signal according to a desired image to melt and perforate the portion. The stencil sheet 1 made by the thermal head 10 waits until its front end is locked by the pair of stencil sheet conveying rollers 16 and is attached to the ink permeable plate cylinder 12 in a loose state. The used base paper mounted on the plate cylinder 12 is released from the plate cylinder 12 by the plate discharge claws 14 by the clamp plate 13 opening the end of the used base paper as the plate cylinder 12 rotates, and is discarded in the plate discharge box 15. It

Next, the base paper 1 which has been plate-made and is on standby,
The paper is conveyed by the base paper conveying roller 16, the leading end thereof is locked by the clamp plate 13, one plate is cut by the cutter 17, and is wound around the plate cylinder 12 by the rotation of the plate cylinder 12. When the plate cylinder 12 rotates counterclockwise for printing, the uppermost printing paper of the printing papers 19 stacked on the paper feed tray 18 is fed one by one by the paper feed roller 20 and the separation plate 21. . The separation plate 21 is pressed against the paper feed roller 20 by a spring 22. The fed printing paper 19 is sent between the printing pressure roller 24 and the plate cylinder 12 at a predetermined timing by a pair of paper conveyance rollers (registration rollers) 23.

On the other hand, when the plate cylinder 12 rotates, the squeegee roller 25 arranged inside the plate cylinder 12 rotates, and the ink application roller 2 arranged parallel to the squeegee roller 25.
The ink in the ink reservoir 27 formed between the squeegee rollers 6 and 6 is applied to the surface of the squeegee roller 25. The ink is supplied to the ink reservoir 19 by an ink supply means (not shown). The printing ink applied to the squeegee roller 25 is supplied to the base paper 1 wound around the plate cylinder 12 by the pressing force of the printing pressure roller 24. When the printing ink is supplied to the base paper 1, the adhesive 4 of the base paper 1 is dissolved by the printing ink, the sheet 2 and the film 3 are separated, and the sheet 2
The ink layer 5 is formed between the film 3 and the film 3, and the ink is supplied from the ink layer 5 to the perforated portion 7 of the film 3, and the printing ink of the perforated portion 7 is provided between the printing roller 24 and the plate cylinder 12. The transferred printing paper 19 is transferred and printing is performed. Printing paper 19 on which printing ink is transferred and printed
Is separated from the plate cylinder 12 by the separation claw 28, and the paper ejection tray 29
Be transported to.

The adhesive 4 dissolved by the printing ink is transferred to the printing paper 19 together with the printing ink passing through the perforations 7. Further, even if the adhesive 4 of the heat-sensitive stencil printing base paper 1 is not dissolved by the ink and is in a swollen or softened state, the film 3 and the sheet 2 are separated by the pressure of the printing pressure roller 24. be able to. The expanded plate cylinder 12 is composed of a plurality of rectangular ink-permeable sheets layered, and the printing ink is supplied to the heat-sensitive stencil printing base paper 1 mounted on the plate cylinder 12. The area is a substantially central area excluding the peripheral edge of the base paper 1. Further, the perforated image forming area formed on the base paper 1 is preferably smaller than the substantially central area. In the present invention, the ink-permeable sheet and the heat-meltable synthetic resin film can be separated by applying a solvent that dissolves an adhesive to the base paper before supplying the ink to the base paper for heat-sensitive stencil printing. But,
A method of dissolving the adhesive with the supplied printing ink to uniformly separate the sheet and the film and performing stencil printing is preferable in that it is not necessary to provide a new step.

According to such a stencil printing method of the present invention, the same stencil printing apparatus as the conventional one is used, and the ink permeable sheet and the heat-meltable synthetic resin film are bonded to each other as in the conventional one. Since the base paper can be made into a plate and set on the plate cylinder, the handleability and transportability of the base paper are not deteriorated, and wrinkles do not occur when the base paper is set. Further, at the printing stage, since the ink permeable sheet constituting the base paper and the heat-meltable synthetic resin film can be separated by supplying the printing ink, the ink supply to the perforated portion of the film is performed at the joint portion of the adhesive and the fiber binding. It can be easily performed without being hindered by the presence of the portion, and the sharpness of the printed image is improved. Further, since the sheet and the film are bonded and integrated around the base paper to which the printing ink is not supplied, it is easy to handle the base paper after printing.

The base paper for heat-sensitive stencil printing of the present invention is prepared by applying an adhesive to a heat-meltable synthetic resin film and then adhering the ink-permeable sheet, or by applying an adhesive on the surface of the ink-permeable sheet. It is preferable that a hot-melt synthetic resin film is adhered and produced after coating. Further, when forming a perforated portion in the film by the heating element of the thermal head, in order to prevent fusion of the heating element and the film,
A known release agent such as silicone oil may be applied to the contact surface between the film and the heating element.

[0021]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited thereto. The heat-sensitive stencil printing base papers A and B and the printing inks A to C used in Examples and Comparative Examples were produced as follows. (1) Production of heat-sensitive stencil printing base paper A Water-soluble Paogen EP-15 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 5
A weight% aqueous solution was prepared and used as an adhesive. This aqueous solution was applied on a polyester film having a thickness of 2 μm with a 4 mil Meyer bar, and then the air permeability was 100 cc / cm ^2.
The Washi paper having a thickness of 35 μm was superposed in seconds and dried with hot air from the Washi paper side to prepare the heat-sensitive stencil printing base paper A of the present invention.

(2) Production of heat-sensitive stencil printing base paper B A 5 wt% methanol solution of vinyl acetate resin (manufactured by Konishi Co., Ltd.) was prepared and used as an adhesive. 2 μm thick polyester and air permeability of 100 cc / cm ² · sec 35 μm thick
Then, the above-mentioned methanol solution was applied from the Japanese paper side by a 4 mil Meyer bar and dried with hot air to prepare the heat-sensitive stencil printing base paper B of the present invention.

(3) Production of printing ink A A W / O type emulsion ink having the following composition was produced. Furnest carbon black 3 parts by weight Ink solvent 240 14 parts by weight Rosin-modified phenolic resin 9.8 parts by weight sorbitan sesquioleate 5 parts by weight Dibutylhydroxytoluene 0.1 parts by weight Water 65 parts by weight Sodium sulfate 3 parts by weight Paraoxin benzoic acid 0 .1 part by weight

(4) Production of Printing Ink B An O / W type emulsion ink having the following composition was produced. Color base 20 parts by weight (MICROPIGMO BLACK WMBK-5 manufactured by Orient Chemical Industry) Acrylic resin emulsion 75 parts by weight Distilled water 4 parts by weight PVA 1 part by weight

(5) Production of printing ink C A solvent type ink was produced with the following composition. Furnest carbon black 4 parts by weight Polyester resin 20 parts by weight Isophorone 11 parts by weight Cyclohexane 11 parts by weight Butyl cellosolve acetate 34 parts by weight Barium sulfate 20 parts by weight

Example 1 When heat-sensitive stencil printing base paper A and printing ink A were used in an integrated stencil printing machine (trade name: Lithograph RC115, manufactured by Ideal Science Co.), stencil printing was performed. Was dissolved in water in the ink, and printing was performed with the polyester film and Japanese paper peeled off, and an extremely clear printed image with high density was obtained even in the solid part of the printed image.

Example 2 The heat-sensitive stencil printing base paper A and the printing ink B were used in an integrated stencil printing machine (trade name: Lithograph RC115, manufactured by Ideal Science Co.) to perform stencil printing. Was dissolved in water in the ink, and printing was performed with the polyester film and Japanese paper peeled off, and an extremely clear printed image with high density was obtained even in the solid part of the printed image.

Example 3 The heat-sensitive stencil printing base paper B and the printing ink C were used in an integrated stencil printing machine (trade name: Lithograph RC115, manufactured by Ideal Science Co., Ltd.) to carry out stencil printing. Was dissolved in the solvent in the ink and printing was performed with the polyester film and Japanese paper peeled off, and an extremely clear printed image with high density was obtained even in the solid part of the printed image.

Comparative Example 1 A stencil printing was carried out by using the heat-sensitive stencil printing base paper B and the printing ink A in an integrated stencil printer (trade name: Lithograph RC115, manufactured by Ideal Science Co., Ltd.). Since the printing was performed in a state where the Japanese paper was not separated from the Japanese paper, a white portion where the ink was not sufficiently transferred was formed in the solid portion of the printed image, and a printed image with poor sharpness was obtained.

[0030]

According to the stencil printing method of the present invention, (1) the same stencil printing device as the conventional one can be used, (2)
The handleability and transportability of the base paper do not deteriorate, and wrinkles do not occur when setting the base paper. (3) In the printing stage, ink supply to the film perforation part It can be easily performed without being hindered by the presence of the joint part and the fiber binding part, and the sharpness of the printed image is improved. (4) Sheets and films are adhered around the base paper where the printing ink is not supplied. Since they are integrated, advantages such as easy handling of the base paper after printing can be obtained. Further, according to the heat-sensitive stencil printing base paper of the present invention, it is not necessary to consider the inhibition of ink passage due to the bonding portion between the adhesive sheet and the film and the fiber binding portion of the ink-permeable sheet, and thus the ink-permeable sheet. The restrictions on the ink passing performance of (1) and (2) are greatly reduced, and the adhesive to be used is not restricted, so that the manufacturing is facilitated and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a heat-sensitive stencil printing base paper used in a method of the present invention and a state explanatory view at the time of printing.

FIG. 2 is a copy of a photomicrograph of the surface of a perforated heat-sensitive stencil sheet.

FIG. 3 is a configuration diagram of a stencil printing apparatus used in the stencil printing method of the present invention.

[Explanation of symbols]

1 ... Heat-sensitive stencil printing base paper, 2 ... Ink-permeable sheet,
3 ... Heat-melting synthetic resin film, 4 ... Adhesive, 5 ... Ink, 6 ... Printing paper, 7 ... Perforated part, 8 ... Printing ink, 9 ...
Fibers of ink permeable sheet, 9a ... Fiber binding portion, 10 ...
Thermal head, 11 ... Platen roller, 12 ... Plate cylinder,
13 ... Clamp plate, 14 ... Plate ejection claw, 15 ... Plate ejection box, 16
... Raw paper transport rollers, 17 ... Cutter, 18 ... Paper feed table, 1
9 ... Printing paper, 20 ... Paper feeding roller, 21 ... Sakiki board, 2
2 ... Spring, 23 ... Paper transport roller, 24 ... Printing roller,
25 ... Squeegee roller, 26 ... Ink application roller, 27
... Ink reservoir, 28 ... Separation claw, 29 ... Paper ejection stand.

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[Procedure amendment]

[Submission date] August 14, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

FIG. 3 is a block diagram of a stencil printing apparatus used in the stencil printing method of the present invention. This stencil printer
Thermal head 10 for perforating heat-sensitive stencil printing base paper 1.
A plate cylinder 12 around which the perforated heat-sensitive stencil sheet 1 is wound, an ink coating roller 26 and a squeegee roller 25 provided inside the plate cylinder 12, and a heat sensitive film wound around the plate cylinder 12. Paper feeding roller 2 for feeding the printing paper 19 to the surface of the plate cylinder 12 in response to the rotation of the stencil printing base paper 1.
0 and a pair of paper conveying rollers 23, and a printing pressure roller 24 for pressing the supplied printing paper 19 against the surface of the plate cylinder 12.
And the plate discharge claw 14 and the plate discharge box 15 for removing the used base paper after printing from the plate cylinder 12 and discharging the plate.
Printed from the heat-sensitive stencil base 1 that is wrapped around
Separation claw 28 for peeling the tip of the printed printing paper 19
It mainly consists of a paper discharge table 29 for stacking the printed printing paper 19 .

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

In such a construction, the heat-sensitive stencil printing base paper (hereinafter sometimes abbreviated as "base paper") 1 is an ink-permeable sheet (hereinafter sometimes abbreviated as "sheet") 2. On the outside, a heat-meltable synthetic resin film (hereinafter,
The film may be abbreviated as "film") 3 and is wound in a roll shape. The base paper 1 is conveyed by the platen roller 3 so that the film side is in close contact with the thermal head 10, and is plate-made by the thermal head 10 to form a perforated image composed of a number of discontinuous perforation portions.
The thermal head 10 is a known one in which a large number of heating elements are formed in a line, and a heating signal according to a desired image is generated.
Is given to selectively control the heat generation of each heating element, and the relevant portion is melted and perforated. The stencil sheet 1 made by the thermal head 10 waits until its front end is locked by the pair of stencil sheet conveying rollers 16 and is attached to the ink permeable plate cylinder 12 in a loose state. When the printing is completed , the used base paper mounted on the plate cylinder 12 is rotated by the plate cylinder 12, the clamp plate 13 opens the front end of the used base paper, and is further separated from the plate cylinder 12 by the plate discharge claws 14 to be discharged from the plate discharge box. 1
Discarded in 5.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

Next, the base paper 1 which has been plate-made and is on standby,
The paper is conveyed by the base paper conveying roller 16, the leading end thereof is locked by the clamp plate 13, one plate is cut by the cutter 17, and is wound around the plate cylinder 12 by the rotation of the plate cylinder 12. When the plate cylinder 12 rotates counterclockwise in FIG. 3 for printing, the uppermost printing papers of the printing papers 19 stacked on the paper feed tray 18 are fed one by one by the paper feed roller 20 and the separation plate 21. It is fed. The separation plate 21 is pressed against the paper feed roller 20 by a spring 22. Printed paper 1 fed
Reference numeral 9 denotes a pair of sheet conveying rollers (registration rollers) 23 and a printing pressure roller 24 and a plate cylinder 12 at predetermined timing.
Sent between and.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

The adhesive 4 dissolved by the printing ink is transferred to the printing paper 19 together with the printing ink passing through the perforations 7. Further, even if the adhesive 4 of the heat-sensitive stencil printing base paper 1 is not dissolved by the ink and is in a swollen or softened state, the film 3 and the sheet 2 are separated by the pressure of the printing pressure roller 24. be able to. The expanded plate cylinder 12 is composed of a plurality of rectangular ink-permeable sheets layered, and the printing ink is supplied to the heat-sensitive stencil printing base paper 1 mounted on the plate cylinder 12. The area is a substantially central area excluding the peripheral edge of the base paper 1. In addition, the printing ink is applied to the perforated image forming area formed on the base paper 1.
In order to sufficiently enter between the film 3 and the sheet 2, it is preferably smaller than the above-mentioned approximately central region. In the present invention, the ink-permeable sheet and the heat-fusible synthetic resin film are separated from each other by supplying the ink to the heat-sensitive stencil printing base paper on which a perforated image is formed before supplying the ink.
Apply a solvent that dissolves the adhesive from the side, and
Sheet and heat-meltable synthetic resin film on almost the entire surface of the base paper.
Separated over, or hot melt synthesis of the base paper
Melt that melts the adhesive from the resin film side through the perforation
Apply the agent and heat the ink permeable sheet including the perimeter of the perforated part and heat.
Although it can be separated from the meltable synthetic resin film,
The printing ink supplied compared thereto to dissolve the adhesive uniformly separating the sheet and the film preferable in that there is no need to provide a new step towards a method for performing stencil printing.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

According to such a stencil printing method of the present invention, the same stencil printing apparatus as the conventional one is used, and the ink permeable sheet and the heat-meltable synthetic resin film are bonded to each other as in the conventional one. Since the base paper can be made into a plate and set on the plate cylinder, the handleability and transportability of the base paper are not deteriorated, and wrinkles do not occur when the base paper is set. Also, at the printing stage, even if the ink-permeable sheet and the heat-meltable synthetic resin film that make up the base paper are separated by the supply of printing ink , the film perforation part still remains.
Since it is composed of independent discontinuity points,
Not fall off from the film, since no even ink supply to the film perforations is inhibited by the presence of the joint portion and the fiber bundles of the adhesive, sharpness of the printed image is improved. In addition, since the sheet and film are bonded and integrated around the base paper to which printing ink is not supplied,
The base paper after printing is easy to handle.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

[0021]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited thereto. The heat-sensitive stencil printing base papers A and B and the printing inks A to C used in Examples and Comparative Examples were produced as follows. (1) Production of heat-sensitive stencil printing base paper A Water-soluble Paogen EP-15 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 5
A weight% aqueous solution was prepared and used as an adhesive. On a polyester film having a thickness of 2μm This aqueous solution was applied at 4 mil Meyer bar, air permeability 100 cc / cm ²
The Washi paper having a thickness of 35 μm was superposed in seconds and dried with hot air from the Washi paper side to prepare the heat-sensitive stencil printing base paper A of the present invention.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

(2) Production of heat-sensitive stencil printing base paper B A 5 wt% methanol solution of vinyl acetate resin (manufactured by Konishi Co., Ltd.) was prepared and used as an adhesive. Polyester with a thickness of 2 μm and air permeability of 100 cc / cm ² · sec with a thickness of 35 μm
Then, the above-mentioned methanol solution was applied from the Japanese paper side by a 4 mil Meyer bar and dried with hot air to prepare the heat-sensitive stencil printing base paper B of the present invention.

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[Document name to be amended] Statement

[Name of item to be corrected] 0023

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(3) Production of printing ink A A W / O type emulsion ink having the following composition was produced. Fane scan mosquitoes over carbon black 3 parts by weight Ink solvent 240 14 parts by weight rosin-modified phenolic resin 9.8 parts by weight sorbitan sesquioleate 5 parts by weight dibutylhydroxytoluene 0.1 parts by weight of water 65 parts by weight of sodium sulfate 3 parts by weight Paraokishin benzoate 0 .1 part by weight

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[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

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[Fig. 2]

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[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

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[Figure 3]

Claims (4)

[Claims] 1. A stencil printing method in which stencil printing is performed using a heat-sensitive stencil sheet comprising an ink-permeable sheet and a heat-meltable synthetic resin film, which are bonded to each other with an adhesive, in the stencil printing method. After forming a perforated image consisting of a large number of discrete discontinuous points in the film by a perforated image forming means, the ink-permeable sheet and the heat-meltable synthetic resin film are separated, and the printing ink is transferred to the ink-permeable sheet. A stencil printing method comprising performing stencil printing on an object to be printed by supplying the perforated image from the sheet side. 2. The ink-permeable sheet and the heat-meltable synthetic resin film of the heat-sensitive stencil sheet on which the perforated image is formed by the perforated-image forming means are separated by the printing ink supplied from the ink-permeable sheet side. The stencil printing method according to claim 1, wherein: 3. A heat-sensitive stencil printing base paper comprising an ink-permeable sheet and a heat-meltable synthetic resin film adhered to each other with an adhesive, wherein the adhesive is supplied to the heat-sensitive stencil printing base paper. A heat-sensitive stencil printing base paper characterized by being dissolved by ink. 4. The heat-sensitive stencil according to claim 3, wherein the adhesive mainly comprises a water-soluble resin which is dissolved by a water component in the printing ink supplied to the heat-sensitive stencil printing base paper. Base paper for printing.