JPH08276648A - Ink container for mimeograph - Google Patents

Abstract

PURPOSE: To make the volume of a used empty container small, its recovery unnecessary, incineration easy, and wrong use difficult by making the container from a disk-shaped substrate and a rubber film for receiving ink and fixing the margin of the film on the periphery of the substrate. CONSTITUTION: In an ink container for mimeograph composed of a disk-shaped substrate 2 having an ink inlet 1 in the middle and a rubber film 3 for receiving ink by expansion, the margin of the film 3 is fixed on the periphery of the substrate 2. The substrate 2 is a polyethylene substrate 880mm in diameter, 2mm in thickness having an ink inlet 1 in the middle and is injection-molded. On the opposite side of the inlet 1, the margin of an expandable disk-shaped silicone rubber film about 1mm in thickness is fixed on the periphery of the substrate by caulking with a metal fixture 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink container used in a stencil printing machine.

[0002]

2. Description of the Related Art Conventionally, a stencil printing machine has been known in which a base paper made by sticking a thermoplastic resin film to the surface of a porous support such as a thin paper is used to make a plate with a thermal head, etc. Widely used.

As shown in FIG. 5, in the stencil printing machine, a cylindrical metal net screen is used as a plate cylinder for supporting the stencil sheet that has been made, and the above-mentioned stencil sheet is formed on the screen of the plate cylinder. Is wound, printing ink is supplied from the inside of the plate cylinder by an intermediate pressing roller, and printing paper is supplied to the surface of the plate cylinder for printing. The above-mentioned printing ink is usually stored in a cylindrical container to form a cassette, and the ink cassette is fitted into the cassette storage portion of the printing machine, and the printing ink is supplied from the cassette to the inside of the plate cylinder for printing. To do.

The above ink cassette has a diameter of 6 to 9 cm,
It is a cylindrical container made of synthetic resin such as polyethylene having a length of about 25 to 30 cm, and the ink filled inside is supplied to the inside of the plate cylinder by pressure reduction and a piston system. The capacity of this cassette is about 1000 cc, and when the ink inside is almost used up, it is replaced with a new ink cassette.

[0005]

The above-mentioned conventional ink cassette is currently used in a large amount, and therefore, a large amount of empty containers are generated after being used, and it takes a lot of money to recover the empty container. In addition, since the inside of the cassette needs to be cleaned when it is reused after being collected, the cost is higher than that of a new ink cassette. However, it is difficult to incinerate an unnecessary empty cassette, and there are many problems in the disposal.

Another problem is that an empty container is collected,
A so-called pirated ink cassette, which is filled with non-genuine ink and sold, is generated, and as a result, ink of poor quality is used, which is also a cause of failure of the printing machine itself. Therefore, an object of the present invention is to provide an ink container for a stencil printing machine, which has a small volume occupied by an empty container after use, does not need to be recovered, is easy to incinerate, and is difficult to illegally use.

[0007]

The above object can be achieved by the present invention described below. That is, the present invention comprises a disk-shaped substrate having an ink inlet in the substantially center thereof, and a rubber film which expands to contain ink, and the peripheral portion of the film is fixed to the peripheral portion of the substrate. It is an ink container for a stencil printing machine, which is characterized in that

[0008]

Function As shown in FIG. 1, the ink injection port 1 is provided substantially at the center.
And a rubber film 3 that expands to contain the ink, and the periphery of the film 3 is the above-mentioned substrate 2.
In the ink container for the stencil printing machine, which is fixed to the peripheral portion of the, as shown in FIG. It expands and is filled with ink.

In this ink pouring operation, the lower surface of the substrate 2 has a diameter substantially the same as that of the substrate, for example, a diameter of 6-9.
cm, the length of the paper tube 4 is about 25 to 30 cm, the rubber film 3 expands in a vertically long bag shape, and the rubber film 3
Reinforce the strength of. After the predetermined amount of ink is filled, the ink inlet 1 is covered with a suitable lid 5 to prevent the ink from flowing out. The paper tube 4 functions as a reinforcing material for the rubber film 3 even when the container after being filled with ink is being handled or transported.

FIG. 3 is a view for explaining setting of the ink container of the present invention filled with ink in a printing machine. In the figure, reference numeral 6 denotes an ink storage unit provided in the stencil printing machine. In the storage unit 6, the paper tube is removed from the ink container protected by the paper tube as shown in FIG. Store the existing container. In addition, the ink container is inserted into the storage portion 6 together with the paper tube, and then the paper tube is attached by an appropriate method, for example,
You may extract from the other side of the storage part 6. Next, as shown in FIG. 4, the end of the ink flow path connected to the main body of the printing machine is connected to the inlet of the ink container, and the storage of the ink container is completed.

In the state of FIG. 3, since the rubber film of the ink container is in a stretched state, the ink is smoothly supplied to the inside of the plate cylinder of the printing machine by the contracting force of the film. As shown in the figure, the contraction force of the rubber film also decreases when the remaining amount of ink decreases, so pressure is applied by the piston 7 provided in the ink storage portion 6 and the remaining ink is all supplied to the inside of the plate cylinder of the printing machine. It is preferable to do so.

After all the ink in the ink container has been used, the ink container is replaced with a new ink container filled with ink. At this time, the used ink container is a rubber film 3
1 is not completely contracted, but the state is almost similar to the state shown in FIG. 1, and the volume of waste is sufficiently small. Compared with the conventional empty ink cassette, its volume and weight are about 1/20, and the disposal cost is also several tens of minutes compared with the conventional ink cassette. can get.

[0013]

EXAMPLES Next, the present invention will be described with reference to examples. FIG.
1A is a sectional view of an ink container for a stencil printing machine of the present invention, and FIG. 1B is a plan view thereof (excluding a lid 5). The disk-shaped substrate 2 of this ink container for a stencil printer has a diameter of about 80 m.
m, a polyethylene substrate having a thickness of about 2 mm has an ink injection port 1 with an inner die of about 7 mm at approximately the center, and a screw thread is provided on the surface of the cylindrical portion forming the injection port 1. This member was molded by injection molding. Next, on the opposite side of the inlet 1, a highly elastic silicone rubber disc-shaped film having a thickness of about 1 mm is caulked around the periphery of the substrate by a metal stopper 9 and tightened to form a book. An ink container for a stencil printing machine of the invention was obtained. Similarly, a lid 5 for closing the above-mentioned inlet 1 was also produced by injection molding.

Although polyethylene is used for manufacturing the substrate in the above embodiment, other molding materials such as polypropylene and polyvinyl chloride may be used. Further, as the rubber film, polyurethane rubber, natural rubber, synthetic rubber, etc., which have high elasticity, may be used. The rubber coating may be attached to the substrate by an adhesive or other method. As shown in FIG. 2, the ink container for a stencil printing machine of the present invention was placed on a cardboard cylinder having an inner size of 70 mm and a length of 250 mm with a rubber coating on the cylinder, and the ink for stencil printing was introduced from an injection port. Pressed in. The injection amount was about 800 cc. In this state, the rubber film expanded by the ink filling was in close contact with the surrounding paper tube, and the paper tube did not fall off easily. The paper tube did not damage the rubber film filled with ink even during handling such as box packing and transportation.

[0015]

[Effects] According to the present invention as described above, an ink container for a stencil printing machine is provided which, after use, has a small volume occupied by an empty container, does not require recovery, is easy to incinerate, and is difficult to illegally use. You can do it.

[0016]

[Brief description of drawings]

FIG. 1 is a diagram illustrating an ink container for a stencil printing machine according to the present invention.

FIG. 2 is a view showing a state where ink is filled in an ink container for a stencil printing machine of the present invention.

FIG. 3 is a view showing a usage state of the ink container for a stencil printing machine of the present invention.

FIG. 4 is a diagram showing a usage state of the ink container for a stencil printing machine of the present invention.

FIG. 5 is a diagram illustrating the principle of a stencil printing machine.

[Explanation of symbols]

 1: Ink inlet 2: Disc-shaped substrate 3: Rubber film 4: Paper tube 5: Lid 6: Ink storage part 7: Piston 8: Ink flow path end 9: Metal stopper

Claims (1)

[Claims] 1. A disk-shaped substrate having an ink inlet at substantially the center, and a rubber film that expands to contain ink, and the peripheral edge of the film is fixed to the peripheral portion of the substrate. An ink container for a stencil printing machine, which is characterized in that