JPH0952429A - Original plate for stencil printing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain simply a perforated image which is multi-colored and conspicuous by a method wherein a foam is impregnated with first ink being water- color ink colored by a specific color, and second ink being oily ink colored by a color different from that of the first ink. SOLUTION: For thermosensitive stencil base paper 12, four sides are bonded to a frame body 18 wherein an opening part corresponding to a size of a foam 16 is provided in a central part with an adhesive layer 15, and a film 20 is bonded to an opposite side with the adhesive layer 15. The foam 16 is impregnated with two kinds of ink which are incompatible with each other such as first ink being water-based ink colored by specific color, for example, black and second ink being oil-based ink colored, for example, red. A processed original plate for stencil printing 10 which contains the foam 16, is equipped to a stamp component. When the stamp component is pushed on printing paper, two kinds of different incompatible colors of ink ooze out from a perforated part on a printing surface, and are transferred to the printing paper.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a stamp for printing a company name, an address and other various character strings on a paper surface, various stamps having a rubber stamp surface have been used. This type of stamp is expensive because the stamp is usually created individually according to the order, and the period from order to acquisition is long. On the other hand, conventionally, by irradiating infrared rays, it is possible to perforate a desired pattern with a thermal head, and by transmitting ink from the perforation group, heat sensitivity that can be used for printing various patterns such as character strings, figures, and marks Stencil paper has been put to practical use.

Japanese Patent Application Laid-Open No. 4-166 filed by the present applicant
The stencil printing plate disclosed in Japanese Patent No. 390 is shown in FIG. This stencil printing plate 50 is a heat-sensitive stencil sheet 5 in which a thermoplastic film 52 and a porous support 54 are bonded together.
6 and a nonwoven fabric 58 impregnated with a water-based or oil-based ink 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 and adhered. In 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. Hereinafter, the formation of the punched image is referred to as plate making.

Next, the stencil printing plate 50 thus prepared is
The stencil printing is performed by being attached to a pressing member having a grip (hereinafter referred to as a stamp member) and pressing the stamp member against the printing paper.

[0005]

However, the above-mentioned stencil printing plate is only impregnated with one kind of water-based or oil-based ink, that is, the perforated image is a single color and is printed with a similar color tone. I was dissatisfied with the point that it was easy to see on the printing paper on which the punched image was formed.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a stencil printing plate from which a perforated image which is multicolored and easily noticeable can be obtained.

[0007]

In order to achieve this object, in the stencil printing plate according to claim 1, an ink impermeable base material, a foam, and the foam are covered with a printing surface. In a stencil printing plate comprising a heat-sensitive stencil sheet consisting of a thermoplastic film forming a, the foam, the first ink is a water-based ink colored in a predetermined color, and a different color from the first ink. And a second ink, which is a colored oil-based ink. For this reason, a stencil printing plate prepared by perforating a heat-sensitive stencil sheet by a known plate making apparatus is mounted on a stamp member and pressed against the printing paper to obtain a water-based ink. The one ink and the second ink, which is an oil-based ink, ooze out from the perforated portion of the heat-sensitive stencil sheet to perform stencil printing.

Further, in the stencil printing plate according to the second aspect, the first ink, which is a water-based ink, and the second ink, which is an oil-based ink, impregnated in the foam are incompatible with each other. Therefore, the perforated image does not become a single color when the ink is mixed for a long term storage.

[0009]

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

The construction will be described with reference to FIG. 1 which is a cross-sectional view and FIG. 2 which is an exploded perspective view of the stencil printing plate of the present embodiment. The stencil sheet 10 is roughly divided into a heat-sensitive stencil sheet 12 composed of a thermoplastic film 11 and a porous support 13 and an opening 181 surrounding the ink-impregnated foam 16. It is composed of a frame 18 and a film 20 which is an ink impermeable base material. The heat-sensitive stencil sheet 12 is provided on one side of the frame 18.
The porous support 13 side is adhered and fixed by the adhesive layer 15. The foam body 16 is accommodated in the opening 181 of the frame body 18, and the film 20 is bonded and fixed to the other side surface of the frame body 18 by the adhesive layer 15.
For this reason, the foam 16 includes the film 20 and the frame 1.
8. The heat-sensitive stencil sheet 12 is covered. Here, the foam body 16 is formed to be thicker than the frame body 18.

As the material of the thermoplastic film 11 used for the heat-sensitive stencil sheet 12, a thickness of 2 is used in this embodiment.
μm polyethylene terephthalate film (hereinafter PE
T film). Other examples include films of polypropylene, vinylidene chloride-vinyl chloride copolymer and the like.

When a PET film is used, its thickness is preferably 1 μm to 4 μm. PET less than 1 μm
The film is not practical due to high manufacturing cost and weak strength. On the other hand, with a general thermal head, 50 mJ / m
4 μm because only energy of about m ² can be applied
It is not possible to perforate using the above.

The porous support 13 is made of, for example, natural fibers such as Manila hemp, Kozo and Mitsumata, synthetic fibers such as polyethylene terephthalate, polyvinyl alcohol and polyacrylonitrile, and semi-synthetic fibers such as rayon as a main raw material. Thin paper is used.

As shown in FIG. 2, the heat-sensitive stencil sheet 12 having the above-described structure has four sides bonded to a frame body 18 having an opening 181 corresponding to the size of the foam 16 in the center. The film 20 is adhered by the adhesive layer 15, and the film 20 is adhered by the adhesive layer 15 on the opposite side of the frame 18.

The stencil printing plate 10 described above is made by a plate making device (not shown). As a plate making device, the surface of the thermoplastic film 11 of the heat-sensitive stencil sheet 12 is selectively heated by a thermal head so that mirror image printing is performed according to the print information, and a predetermined portion of the thermoplastic film 11 is heated and melted. A device for piercing is used. During plate making,
The thermal head is a stencil printing master plate 1 with a predetermined pressing force.
0, and perforations are formed in the stencil sheet 12.

As the foam 16, a foam having a cell diameter of 0.2 mm or more, preferably 0.4 mm or more and having continuous cells is preferably used. If the bubble diameter is less than 0.2 mm, not only impregnation becomes difficult, but also the movement of the ink inside the foam becomes difficult, and if ink is consumed on a part of the plate, it will not be possible to replenish the ink from the surrounding area. Sufficient and the perforated image is blurred. Examples of the material of the foam 16 include polyurethane, NBR (acrylonitrile butadiene rubber), and polyethylene.

The stencil printing plate of the embodiment of the present invention is
The foam 16 has a first ink 1 which is a water-based ink colored in the predetermined color (for example, black) and a second ink which is an oil-based ink colored in a color different from the first ink (for example, red). Ink 2 is impregnated with two kinds of inks which are incompatible with each other. Regarding the composition and manufacturing method of the ink, first, both the first ink 1, which is a water-based ink, and the second ink, which is an oil-based ink, those manufactured by using a known method in the past can be used.

These two kinds of ink are impregnated in the foam body 16. The ink impregnation method is, for example, as shown in FIG. 4A, half of one foam body is water-based ink. The first ink 1 is impregnated, and the other half is impregnated with the second ink 2 which is an oil-based ink. By doing so, perforated images having different color tones can be obtained above and below or left and right of the printing surface. Alternatively, as shown in FIG. 4B, by impregnating in stripes alternately at equal intervals, perforated images having different color tones can be obtained alternately. Alternatively, a plurality of foams divided for each ink may be arranged in a line and used. In these impregnation methods, it is desirable to carry out vacuum impregnation in which the foam is immersed in the ink and kept under vacuum so that a large amount of the ink is impregnated in the foam in a short time.

A stencil printing plate 10 containing the foam 16 impregnated with these two kinds of ink and made by a plate making device.
Are attached to the stamp member 34 as shown in FIG.
The stamp member 34 includes a handle portion 36 and a cushion layer 3
8 and the adhesive layer 40. The stencil printing plate 10 is mounted by adhering the film 20 side of the stencil printing plate 10 to the adhesive layer 40 of the stamp member 34.

In this state, the stamp member 34 is attached to the printing paper 4
When pressed against 2, the foam 16 is compressed, and the impregnated water-based ink first ink 1 and oil-based second ink 2 ooze out from the perforated portion of the printing surface, and the printing paper 42 is exposed. Is transcribed to.

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

[0022]

As is apparent from the above description, in the stencil printing plate according to claim 1 of the present invention, the foam contains a first ink which is a water-based ink colored in a predetermined color, Since the second ink, which is an oil-based ink colored in a different color from the first ink, is impregnated, it is possible to easily obtain a perforated image that is multicolored and easily noticeable on the printing paper.

Further, in the stencil printing plate according to the second aspect, the first ink, which is a water-based ink, and the second ink, which is an oil-based ink, impregnated in the foam are incompatible with each other. Therefore, the perforated image does not become a single color when the ink is mixed for a long term storage.

[Brief description of 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 a stencil printing plate according to the present embodiment.

FIG. 3 is an explanatory view showing a state in which a stencil printing original plate is mounted on a stamp member 34.

FIG. 4A is a diagram showing an example of a foam body impregnated with a first ink and a second ink. (B) is a figure which shows the other example of the foam in which the 1st ink and the 2nd ink were impregnated.

FIG. 5 is a sectional view of a conventional stencil printing plate.

[Explanation of symbols]

 1 First ink that is a water-based ink 2 Second ink that is an oil-based ink 12 Heat-sensitive stencil base paper 15 Adhesive layer 16 Foam 20 Film

Claims (2)

[Claims] 1. A stencil printing plate comprising an ink-impermeable substrate, a foam, and a heat-sensitive stencil sheet made of a thermoplastic film which covers the foam and forms a printing surface. A stencil characterized by being impregnated with a first ink which is a water-based ink colored in a predetermined color and a second ink which is an oil-based ink colored in a color different from the first ink. Master plate for printing. 2. The stencil printing plate according to claim 1, wherein the first ink, which is a water-based ink impregnated in the foam, and the second ink, which is an oil-based ink, are incompatible with each other. .