JP2582732Y2 - Printing plate - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing plate.

[0002]

2. Description of the Related Art Conventionally, heat-sensitive stencil paper which can be perforated by infrared irradiation or a thermal head is known. As a typical example, there is one obtained by laminating a thermoplastic film and porous thin paper using an adhesive. As a stencil printing apparatus using such a heat-sensitive stencil sheet, a single cylinder stencil printing apparatus as shown in FIG. 5 is known. In this method, a perforated heat-sensitive stencil sheet 64 is wound around the outer peripheral surface of a cylindrical plate cylinder 62 so that the porous support side is inside, and ink is supplied from the inside of the plate cylinder to the outer peripheral surface of the plate cylinder. This is an apparatus for printing by bringing a press roller 66 into press contact with a cylindrical plate cylinder 62 via a printing paper 68 and rotating and driving the cylindrical plate cylinder 62.

As another stencil printing apparatus, a press-type stencil printing apparatus as shown in FIG. 6 is known. This is because a frame 72 is provided around the porous support of the heat-sensitive stencil sheet 70 formed by bonding a thermoplastic film and a porous support, and the frame 72 and the ink-impermeable cover sheet 74 form an ink. A heat-sensitive stencil plate 76 having a concave portion 84 as an application portion is used.

The stencil printing apparatus includes a pressing member 78, a receiving table 80 disposed opposite to the pressing member 78, and a heat-sensitive stencil plate 76 disposed around a surface of the pressing member 78 facing the receiving table 80. And a holding member 82. The ink is applied to the concave portion 84 formed by the frame 72 of the perforated heat-sensitive stencil plate 76, the cover sheet 74 is covered, and the holding member 82 holds the pressing member 78.
This is a device for printing by moving and pressing on the receiving table 80 via the printing paper 86.

However, such a single-cylinder type stencil printing apparatus becomes large in size and is used for large-volume printing, so that a relatively small amount of printing increases the running cost.

On the other hand, a press-type stencil printing apparatus can be downsized, but the user must apply ink, so that hands or clothes are stained when applying ink, or the ink thickness becomes uniform. Therefore, there is a disadvantage that printing unevenness occurs.

In order to improve the above-mentioned drawbacks, the present applicant has disclosed a stencil printing plate shown in FIG. 7 in the specification and drawings attached to Japanese Patent Application No. 2-292942. The stencil sheet 50 is made of a heat-sensitive stencil sheet 5 formed by bonding a thermoplastic film 52 and a porous support 54.
6, a non-woven fabric 58 impregnated with ink, which is disposed on the porous support 54 side of the heat-sensitive stencil sheet 56, and a film 60, which is an ink-impermeable base material, are sequentially laminated. . Then, on the stencil printing plate 50, a perforated image is formed by heating and melting the surface of the thermoplastic film 52 of the heat-sensitive stencil sheet 56 with a plate making apparatus using a thermal head, for example. Hereinafter, formation of the perforated image is referred to as plate making.

Next, the stencil printing plate 50 thus produced is
The stencil printing is performed by being mounted on a stamp member provided with a grip and pressing the stamp member against printing paper.

[0009]

However, in this stencil printing plate, when making a stencil using a thermal head, for example, a small amount of ink oozes out from the perforated portion, so that the ink adheres to the thermal head and the stencil printing plate is not used. There was a risk that ink would adhere to the thermoplastic film surface (the stamp surface).

The present invention has been made to solve the above-mentioned problems, and has as its object to provide an original printing plate which does not cause ink to adhere to plate making means.

[0011]

In order to achieve this object, a printing plate according to claim 1 of the present invention has an internal
The ink is impregnated, by being plate-making by a thermal head, a printing plate precursor and capable of transmitting part of the ink and the non-transparent portions are formed, detachably provided on the seal face of the printing plate precursor And a peeling member adhered to at least a part of the thin film and peeling the thin film from the stamped surface of the printing original plate.

According to a second aspect of the present invention, in the printing original plate, the peeling member has a projecting portion projecting from an outer periphery of the printing original plate.

According to a third aspect of the present invention, the high-temperature heat-resistant thin film is made of a material having a continuous use temperature of 180 ° C. or higher.

The printing plate according to a fourth aspect of the present invention is formed by sequentially laminating a heat-sensitive stencil sheet, an impregnated body impregnated with ink, and an ink impermeable base material.

[0015]

The original plate for printing according to the first aspect of the present invention having the above-mentioned structure has a high heat resistance when the surface of the original plate on which a thin film is provided is made by a plate making apparatus using a thermal head. The thin film is not affected by the heat of the thermal head, and only the surface of the printing original plate is made. Then, after attaching the preprinted printing original plate to a stamp member or the like, when the thin film is peeled off from the printing original plate using the peeling member, the ink impregnated inside the printing original plate oozes out and printing is performed. It is.

Further, in the printing original plate according to the present invention, since the peeling member has a projection projecting from the outer periphery of the printing original plate, the thin film is peeled by pulling the projection. Peeled off with the member.

According to the third aspect of the present invention, since the high-temperature heat-resistant thin film is formed of a material having a continuous use temperature of 180 ° C. or more, for example, a plate making using a general thermal head When plate making is performed by the apparatus, only the stamped surface of the printing original plate is reliably made.

The printing plate according to the fourth aspect is constituted by sequentially laminating a heat-sensitive stencil sheet, an impregnated body impregnated with ink, and an ink-impermeable base material. When making a stencil sheet using a thermal head, the high-temperature heat-resistant thin film provided on the surface of the stencil sheet is not affected by the heat of the thermal head. Perforated. Then, after mounting the preprinted printing plate on a stamp member or the like, the thin film is peeled off from the printing plate using a peeling member, and the ink impregnated in the impregnating body becomes the perforated portion of the heat-sensitive stencil sheet. And printing is performed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, referring to FIG. 1 which is a cross-sectional view of the stencil printing plate of the present invention and FIG. 2 which is an exploded perspective view, the structure of the stencil printing plate 10 of the present embodiment will be described. 19, the surface film 14 (constituting a thin film according to claim 1 of the present invention), the heat-sensitive stencil sheet 12, nonwoven fabric 16 ink is impregnated, the frame member 18 is disposed so as to surround the non-woven fabric 16, the ink impermeable The film 20, which is the base material, is sequentially laminated.

As shown in FIG. 2, the heat-sensitive stencil sheet 12 has the frame 18 and four sides adhered to each other by an adhesive layer 28a. The frame 18 has an opening in the center corresponding to the size of the nonwoven fabric 16. The nonwoven fabric 16 is impregnated with oil-based ink in a saturated state, is fixed on the film 20, and the pressure is reduced. When added, the impregnated ink oozes out.

The film 20 is adhered to the film 20 and the back surface of the frame 18 by an adhesive layer 28b indicated by hatching in FIG.

Surface film 14 which is a high temperature heat-resistant thin film
Are adhered to the heat-sensitive stencil sheet 12 with an adhesive in such a manner that there is no air layer between them. The properties required for this adhesive are:
It is weak to 0 ° or 180 ° peeling. In this embodiment, silicon grease or the like is used as the adhesive.

The surface film 14 has a thickness of 4 μm.
m or less and a continuous use temperature of 180 ° C. or more, such as a metal thin film of titanium, aluminum, silver, or gold,
Polyetheretherketone and polyethersulfone are used. In this embodiment, an aramid film (para-aromatic polyamide, APA) is used.

The peeling member 19 is formed by coating an acrylic or silicon-based adhesive layer (not shown) on a base material of paper or various plastic films, similarly to various known seals. It is adhered to the surface film 14 by the action of the agent layer. The peeling member 19 can be attached to the surface film 14 in advance, but it is preferable that the peeling member 19 be attached to the surface film 14 as the last step of preparing the stencil printing plate 10.

Next, the operation will be described. When the above-described stencil printing plate 10 is subjected to plate making by a well-known plate making device (for example, a thermal head) not shown, the difference between the continuous use temperature of the surface film 14 and the thermoplastic film of the heat-sensitive stencil sheet 12 is large. 14 is not melted by the heat of the head but heat-melts only the thermoplastic film to form a perforated image.

[0027] Then the surface film 14 projecting portions 19a projecting from the frame 18 of the release member 19 bonded on (present considered
Has a structure) the protruding portion according to claim 2 of the draft, by pulling by applying a force in the direction of the arrow, the surface film 1 on the perforating plane integrated with stripping member 19 by the action of the pressure-sensitive adhesive layer
The stencil sheet 4 is gradually peeled off and removed from the stencil surface, and the stencil sheet 12 in the stencil state is exposed.

The stencil printing plate 10 after plate making is fixed to a stamp member 34 composed of a handle 36, a cushion layer 38, and an adhesive layer 40, and is used for printing on various types of paper 42 and the like.

As is clear from the above description, in the stencil printing plate 10 of the present embodiment, the surface film 20 which is a thin film which can be peeled off and is heat-resistant at high temperature is attached to the surface of the heat-sensitive stencil 12. Since the ink is provided, ink does not seep out from the perforated portion when making a plate using a thermal head or the like, which is a plate making means. Further, when the surface film is peeled off from the heat-sensitive stencil sheet 12 after the plate making, since the peeling member 19 is used to peel off the heat-sensitive stencil sheet 12 from the heat-sensitive stencil sheet 12, the surface film 20 having a weak stiffness is given stiffness. In addition, the handling of the surface film 20 becomes easy, and the ink does not adhere to the user's hand or clothes.

It should be noted that the present invention is not limited to the above embodiment, and can be implemented in various modes without departing from the gist of the present invention.

For example, in this embodiment, the peeling member 1
Reference numeral 9 denotes a frame that surrounds the printing surface. If the surface film can be easily peeled off, FIG.
Various shapes can be used as shown in FIGS.

[0032]

[Effect of the invention] As is clear from the above,
According to the printing plate according to the first aspect of the present invention, when the surface of the printing plate on which the thin film is provided is subjected to plate making by a plate making apparatus using a thermal head, the thin film having a high temperature and heat resistance is formed of the thermal head. Plates are made only on the surface of the printing plate without being affected by heat. Then, after attaching the preprinted printing original plate to a stamp member or the like, when the thin film is peeled off from the printing original plate using the peeling member, the ink impregnated inside the printing original plate oozes out and printing is performed. It is. Therefore, at the time of plate making, since the thin film is provided on the surface of the printing plate, the ink impregnated inside the printing plate does not bleed out and does not stain the thermal head of the plate making apparatus. In addition, when peeling the high-temperature heat-resistant thin film from the original printing plate after plate making, the thin film is peeled off by using a peeling member, so that the thin thin film is given stiffness, so that the thin film can be easily handled. Ink does not adhere to the user's hands or clothes.

Further, according to the printing plate of the present invention, since the peeling member has a projection projecting from the outer periphery of the printing plate, the thin film is formed by pulling the projection. It can be easily peeled off together with the peeling member.

According to a third aspect of the present invention, the thin film having high heat resistance has a continuous use temperature of 180 ° C.
Since the plate is made of the above materials, for example, when plate making is performed by a plate making device using a general thermal head, only the stamped surface of the printing original plate is reliably made, and the thin film is not affected.

The printing plate according to the fourth aspect is constituted by sequentially laminating a heat-sensitive stencil sheet, an impregnated body impregnated with ink, and an ink impermeable base material. When making a stencil sheet using a thermal head, the high-temperature heat-resistant thin film provided on the surface of the stencil sheet is not affected by the heat of the thermal head. Perforated. Then, after mounting the preprinted printing plate on a stamp member or the like, the thin film is peeled off from the printing plate using a peeling member, and the ink impregnated in the impregnating body becomes the perforated portion of the heat-sensitive stencil sheet. And printing is performed. Therefore, at the time of plate making, since the thin film is provided on the surface of the heat-sensitive stencil paper, the ink impregnated in the impregnating body does not ooze out, and the thermal head of the plate making device is not stained. Also, when peeling the high-temperature heat-resistant thin film from the surface of the heat-sensitive stencil paper after plate making, the thin film is peeled off using a peeling member. And ink does not adhere to the user's hands or clothes.

[Brief description of the drawings]

FIG. 1 is a sectional view of a stencil printing plate according to the present embodiment.

FIG. 2 is an exploded perspective view of the stencil printing plate of the present embodiment.

FIG. 3 is a side view showing a use form of a stencil printing plate.

FIGS. 4A to 4C are plan views showing various forms of a peeling member.

FIG. 5 is a configuration diagram of a conventional single cylinder stencil printing apparatus.

FIG. 6 is a configuration diagram of a conventional press-type stencil printing apparatus.

FIG. 7 is a sectional view of a conventional stencil printing plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Stencil printing plate 12 Heat sensitive stencil sheet 14 Surface film 16 Nonwoven fabric 19 Peeling member 20 Film

Claims (4)

(57) [Scope of request for utility model registration] 1. A ink therein is impregnated by being plate-making by a thermal head, a printing plate precursor and capable of transmitting part of the ink and the non-transparent part is formed, of the printing plate precursors A high-temperature heat-resistant thin film provided releasably on the stamped surface, and a peeling member adhered to at least a part of the thin film and peeling the thin film from the stamped surface of the printing original plate. The original plate for printing. 2. The printing original plate according to claim 1, wherein the peeling member has a protrusion protruding from an outer periphery of the printing original plate. 3. The printing plate according to claim 1, wherein the high-temperature heat-resistant thin film is made of a material having a continuous use temperature of 180 ° C. or higher. 4. The printing plate comprises a heat-sensitive stencil sheet,
The printing plate according to any one of claims 1 to 3, wherein an impregnated body impregnated with ink and a substrate impermeable to ink are sequentially laminated.