JPH10193764A - Stamping tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge a large amount of ink while accommodating a large amount of ink, to minimize blurring of a mark, and to be able to use up most of the contained ink. Obtain a stamping tool. SOLUTION: The ink is accommodated in a free state inside, a valve body is slidably inserted into an ink supply hole to a printing surface of an ink tank, and a pressing force applied to the printing surface between the valve body and the printing surface. Is connected to the valve body, and at the time of stamping, when receiving a pressing force by pressing the stamping surface against the substrate, the valve body is slid to open the ink supply hole, and the stamping surface is pressed. A stamping tool in which the valve body closes the ink supply hole by the urging force of the elastic body when the pressing force is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called printing method in which ink is housed inside, and the ink is transmitted to a stamp surface, so that printing can be performed without applying ink to the stamp surface with a stamp table every time stamping is performed. The present invention relates to a stamping tool called an automatic stamp.

[0002]

2. Description of the Related Art Conventionally, ink contained in the above-mentioned automatic marking is impregnated and held in a communicating porous body such as urethane or a fiber bundle such as polyester fiber, acrylic fiber or wood pulp fiber. I was

[0003]

The above-described ink-impregnated ink-impregnated ink holding ink has a problem that it cannot accommodate a large amount of ink. In addition, the ink connection between the ink impregnated body and the printing surface relies on the capillary phenomenon, and the ink supply to the printing surface cannot keep up, such as when discharging a large amount of ink from the printing surface or when performing continuous printing many times. , The mark was sometimes faded. Furthermore,
The ink impregnated body itself has a problem in that the contained ink cannot be used up because it has a certain level of ink holding power.

[0004]

That is, according to the present invention, a valve element is slidably inserted into an ink supply hole to a stamped surface of an ink tank containing ink in a free state therein. A connecting body for transmitting the pressing force applied to the stamp surface to the valve body is provided between the stamp surface and the valve body. Further, the valve body, the connecting body and the stamp surface are urged in the direction of the stamp surface by a resilient member. When the pressing force is applied to the printing medium, the valve body is slid to open the ink supply hole, and when the pressing force on the stamp surface is released, the valve body is urged by the elastic body. The gist of the present invention is a stamping tool that closes an ink supply hole.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 shows a stamping tool of the present invention, which has a main body 1 having an ink tank portion 1a inside and a grip portion 1b for stamping operation outside, and a heat-sensitive stencil sheet 2 forming a stamp face 2a. A frame member 3 for attaching the heat-sensitive stencil sheet 2 to the main body, and a valve body 4 for opening / closing the ink tank 1a.
A connecting member 5 fixed to the valve body 4 and transmitting the pressing force received by the stamp face 2a to the valve body 4, and a coil spring 6 which is a resilient member for urging the connecting member 5 in the direction of the stamp face. . As the repelling member, an elastic rubber body may be interposed instead of the coil spring.

The body 1 has an opening 1d for ink supply which communicates with the ink tank 1a.
Is fitted. The main body 1 uses a relatively hard synthetic resin because it has a grip portion 1b for applying a pressing force. Polypropylene resin, acrylonitrile styrene resin, acrylonitrile butadiene styrene resin, and the like can be used, but if an amorphous resin is used, preferable hardness is easily obtained. Considering the permeability of the ink solvent, it can be said that polypropylene resin is preferable. On the other hand, the lid member 1e is formed of a relatively soft synthetic resin such as a polypropylene resin due to a problem of liquid tightness or the like.
Here, the main body 1 may be formed of a transparent synthetic resin so that the amount of ink inside can be visually recognized.

The stamp face 2a is formed by attaching a thermosensitive stencil sheet 2 in which a porous thin paper is stuck to a polyethylene terephthalate film with a hot melt adhesive to the main body 1 by a frame member 3. The main body 1 and the frame member 3 are fixed by sandwiching the heat-sensitive stencil sheet 2 with circumferential concave and convex portions. By fixing the heat sensitive stencil sheet 2 while stretching it, the communicating porous elastic member 5a is sandwiched and fixed between the connecting member 5 and the heat sensitive stencil sheet 2.

Ink in ink tank 1a (not shown)
Is supplied to the stamp surface 2a via the ink passage 1c. The connecting member 5 has a communicating porous elastic member 5a made of polyurethane adhered as a contact surface with the stamp surface, and a plurality of ink passages are provided on the support plate 5b to which the communicating porous elastic member 5a made of polyurethane is adhered. A hole 5c is formed. When the stamp surface 2a comes into contact with the printing material and is pressed, the connecting member 5 is pressed and the ink in the ink tank portion 1a is released by the sliding of the valve body 4. The ink discharged from the ink tank portion 1a is supplied to the stamp face 2a via the ink passage 1c, the ink passage hole 5c, and the communicating porous elastic member 5a, and the printing is performed on the printing material. Here, the ink through hole 5c and the communicating porous elastic member 5a are temporary holding portions of the ink due to weak capillary force, and a large amount of the ink is supplied to the stamp surface 2a at a time, and the ink is excessively discharged. It is suppressed as much as possible.

The elasticity of the communicating porous elastic member 5a is weaker than the elasticity of the coil spring 6, and the valve body 4 slides after the communicating porous elastic member 5a is sufficiently crushed during stamping. , The ink passage 1c is opened. By doing so, at the time of stamping, the ink impregnated in the communicating porous elastic member 5a is discharged, and then the ink in the ink tank portion 1a is supplied. Therefore, the amount of ink forming a mark can be adjusted by adjusting the pressing force.

FIG. 2 shows another example. Basically, the same parts are denoted by the same reference numerals. The difference from the example shown in FIG. 1 is that the stamp face 2a is of a type having irregularities in a desired shape, and the material is a stamp face member 201 made of polyurethane having communicating pores. Is changed to a coil spring 6, and a polyurethane resilient ink holder 60 having communicating pores is used.
It is set to 1.

As described above, the ink tank 1a and the stamp surface 2
A part of the ink supplied in a large amount when the valve body 4 is opened is provided by the elastic ink holding member 601 capable of holding a certain amount of the ink between the ink and the elastic ink holding member 601. The ink can be permeated into the holder 601 and only an appropriate amount of ink can be supplied to the stamp surface 2a.

Further, printing can be performed to some extent by pressing the stamp surface 2a with a pressing force that does not open the valve body 4 with the ink held by the elastic ink holding member 601. Further, since the repellent ink holder 601 is a disk-shaped object having an area corresponding to the entire surface of the stamped surface 2a, the stamped surface 2a
It is possible to supply a constant amount of ink over the entire surface of the print surface 2a, and a large amount of ink is supplied to only a part of the printing surface 2a, and shading of a print mark due to a shortage of ink in a part is suppressed as much as possible.

FIG. 3 shows still another embodiment. As in the example shown in FIG. 2, the repellent member for keeping the valve body 4 in the normally closed state is a resilient ink holder. The difference from the above-mentioned example is that a plurality of ink passages 1c, which are ink supply portions from the ink tank portion 1a, are formed, and
Is the point where is arranged. Here, the repellent ink holder 60
2 is a disc-shaped polyurethane in which a plurality of ink passage holes are formed as shown in FIG. By forming a plurality of ink passages in this manner, the ink can be immediately spread over the entire stamp surface 2a when the valve body is opened.

FIG. 5 shows still another example. This is an example in which a desired imprint can be smoothly formed even when the imprinting surface 2a has a large area because of the stamping tool. That is,
The diameter of the ink passage 101c is １ ／ or more of the diameter of the stamp surface 2a. Accordingly, the valve body 401 also has a large diameter. Further, in this example, a resilient member that keeps the valve body 401 in the normally closed state is disposed as a synthetic rubber body 603 in the ink tank section 1a. Synthetic rubber body 603
Is sandwiched between the valve body 401 and the top wall 1f of the ink tank 1a. At the time of stamping, the valve body 401 is compressed by receiving a pressing force to open the valve.

[0015]

As described above, the imprinting tool of the present invention can discharge a large amount of ink while containing a large amount of ink, and minimizes blurring of the mark. Most can be used up.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example.

FIG. 2 is a cross-sectional view showing another example.

FIG. 3 is a sectional view showing still another example.

FIG. 4 is a perspective view illustrating a repellent ink holder of FIG.

FIG. 5 is a sectional view showing still another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 1a Ink tank part 1b Grasping part 1c Ink passage 101c Ink passage 1d Opening 1e Lid member 2 Heat-sensitive stencil sheet 2a Signed surface 201 Signed surface member 3 Frame member 4 Valve body 401 Valve body 5 Connecting member 5a Communication porous elastic member 5b Supporting plate 5c Ink through hole 6 Coil spring 601 Elastic ink holder 602 Elastic ink holder 603 Synthetic rubber body

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akinobu Akasaka 4-1-8 Yoshimachi, Soka City, Saitama Prefecture Pentel Co., Ltd. Grass Processing Plant (72) Inventor Katsuhiro Ueda 4-1-8 Yoshimachi, Soka City, Saitama Prefecture Pentel Corporation Grass Processing Plant

Claims (1)

[Claims] 1. A valve body is slidably inserted into an ink supply hole for an ink tank, which accommodates ink in a free state therein, and is provided between the valve body and the stamp surface on the stamp surface. A connecting body that transmits the pressing force to the valve body is provided, and the valve body, the connecting body, and the stamp face are urged in the direction of the stamp face by a resilient member. When receiving pressure, the valve body is slid to open the ink supply hole, and when the pressing force against the stamp surface is released, the valve body closes the ink supply hole by the urging force of the elastic body. Utensils.