JP2005081741A - Seal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal which can easily work a seal face, can prevent dispersion to a projected material to be sealed and can obtain a clear pretty print of the seal. <P>SOLUTION: In the seal comprising a printed letter holding part for holding the printed letter and the printed letter, the printed letter comprises a continuous porous thermoplastic resin and the seal face part of the printed letter forms a part of a globular shape to feature the seal. The seal is the printed letter comprising a thermoplastic resin of the continuous porous body, the seal face part is of globular projected shape and the seal comprising an ink bleeding out part which is impregnated by the printed body with infrared or a hot plate and a non-bleeding out part. Then, the seal can seal a material to be sealed having an irregular surface without generating dispersion. A clean clear seal print having not a dispersion phenomenon can be obtained on a non-sealing material having a curved surface and the irregular surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a stamp made of a printing body made of a continuous porous thermoplastic resin.

Conventionally, there have been many applications for printing stamps using thermoplastic resins.
As an example, there is JP-A-10-114132 (hereinafter referred to as (A)) using the same thermoplastic resin as that of the present applicant.
(A) is a continuous porous printed body using a thermoplastic resin (particularly polyethylene resin) and simultaneously containing carbon as a heat generating agent.
(A) is a flat printed body, and a printing surface is formed on the surface of the printed body by infrared rays and a document.

Specifically, the document is made of a transparent material (polypropylene or the like) and a material having a melting temperature higher than that of the thermoplastic resin. This transparent material represents characters, drawings, etc., which will be the stamp, and is used as a manuscript. Then, the characters and drawings on the original are selectively shielded from infrared rays, and the infrared rays are transmitted through the non-existent portions of the characters and drawings to reach the surface of the thermoplastic resin, and the heat generating agent (carbon) is heated to generate a porous material. The porous portion is melted by melting the porous thermoplastic resin to block the porous portion so that the ink does not bleed out. In the presence of characters, drawings, etc., the porous portion remains and the portion from which the ink oozes out.
In this way, a printing surface is formed on the printed body to form a stamp. Such stamps are flat and are not suitable for stamping uneven surfaces, spherical surfaces, curved surfaces, and the like. Furthermore, if it is frequently used for such flat plate-shaped printing body convex portions, the marking surface is damaged and a clear marking surface cannot be obtained.

Moreover, there is JP-A-11-91219 (hereinafter referred to as (b)) in which the stamp surface is a curved surface.
(B) is the one in which the contour shape of the stamp face made of an elastic material is a curved surface. The elastic material is “like a synthetic rubber”, and “the center of the marking surface is a curved surface protruding outwards, and the curved surface may be a spherical surface with a uniform curvature radius”. is there.
However, (B) is not the surface of the thermoplastic resin, and its purpose and effect is that even if the stamp is pressed while it is not perpendicular to the surface of the paper, the curved protrusion first contacts the surface of the paper. Finally, it deforms so as to follow a flat paper surface and obtains a uniform impression.
However, in the case of a porous body of synthetic rubber (NBR or the like), the ink oozes out from both the concaves and convexes of the marking surface, and a phenomenon called bumping occurs, and a beautiful imprint cannot be obtained.
Therefore, the present invention clearly differs in purpose and effect from (b) and is a completely different invention.

Furthermore, Japanese Utility Model Publication No. 49-18604 (hereinafter referred to as (C)) is available. (C) is a printing plate for convex curved surface printing, in which an ink is attached to a soft elastic body, and then press-transferred to the object to be printed.
As apparent from FIGS. 1 and 2, the ink is transferred from the ink plate and printed on the object to be printed.
The claim forms a concave arc convex surface similar to the surface of the object to be printed. In particular, FIG. 3 shows the structure of a stamped surface with an ink self-sufficiency type stamp, but the stamped surface portion has a concave shape, and the material seen as the stamped surface is a polyurethane pad. For these reasons, the present invention is clearly different in configuration from the prior application (c).

Japanese Utility Model Publication No. 51-18808 (hereinafter referred to as (2)). Although (b) is not described in the detailed description, it has a convex shape as seen in FIG. The detailed description includes a rubber stamp for printing, neither a permeation stamp, nor a continuous porous thermoplastic resin (polyolefin resin, etc.). Therefore, the configuration of the present invention is clearly different from (2).
JP-A-10-114132 (Claims) JP 11-91219 A (paragraph “0008”) Japanese Utility Model Publication No. 49-18604 (FIG. 1, FIG. 2, FIG. 3, specification, page 3) Japanese Utility Model Publication No. 51-18808 (FIG. 1, the third paragraph of the specification)

  The problem to be solved by the present invention is that, with respect to the unevenness of the surface to be printed, it is not possible to obtain a clear and clean imprint on a conventional plate-shaped printing surface, particularly a printed material made of synthetic rubber having open cells. . In this case, although the portion of the stamp surface that appears as an imprint is higher than the surroundings, the impregnated ink oozes out from the entire stamp surface. In particular, a portion that is not imprinted, such as a convex portion (for example, an egg), is in contact with the surface of the object to be printed. This phenomenon is called haratsuki. Further, in such a continuous porous body of synthetic rubber, the above-described harassment phenomenon occurs even if only a convex marking surface is formed, and a clear and beautiful imprint cannot be obtained.

  Accordingly, it is possible to provide a stamp that can be easily processed with a stamping surface and can prevent a harshness from being formed on a convex printed product, thereby obtaining a clear and beautiful imprint.

  In a stamp comprising a printing body holding portion for holding a printing body and the printing body, the printing body is made of a continuous porous thermoplastic resin, and a printing surface portion of the printing body forms a part of a spherical shape. It is a characteristic stamp.

The stamp of the present invention is a printing body made of a continuous porous thermoplastic resin, the printing surface portion is a spherical convex shape, and the ink exuded portion impregnated in the printing body with infrared rays or a hot plate and non-bleeding Since the stamp has a protruding portion, the stamp according to the present invention can be stamped without causing harassment on a printed material having an uneven surface. Therefore, a clear and beautiful imprint having no harassment phenomenon can be obtained on a non-printed object having a curved surface or an uneven surface.

Further, the stamp of the present invention uses a thermoplastic resin printed body and can easily and easily form a stamped surface by infrared rays or a hot plate. In addition, it can be easily repaired even when a flaw is applied to the melted stamped surface where the ink is imprinted and the ink does not bleed out.

The stamp of the present invention uses a printed body made of a continuous porous thermoplastic resin, and the stamp surface has a spherical shape. The printed body includes a method of creating a printed surface using a manuscript for creating a printed surface and a light emitting body that emits infrared light, and a method of using a hot plate. The printed body having the created marking surface is attached to the holding portion so as to be bonded, fitted, or replaced.

The first embodiment of the present invention will be described in detail with reference to FIGS. 1, 2, 3, and 4. FIG.
1 is a printing body that forms a part of a spherical shape, and the material has a feature that it melts particularly when irradiated with infrared rays, and is a porous body having countless continuous pores with ink resistance. Polyamide-based and most other thermoplastic resins and thermoplastic elastomers can be used. In view of economic and production aspects, it is easily melted by irradiation with infrared rays and has excellent ink resistance. In consideration of economic and production aspects, a low melting point polyolefin resin having a melting temperature of about 50 to 80 ° C. is used, particularly a polyethylene resin.

  Carbon black can generally be used as the heat generating material fine powder that generates heat by infrared rays mixed in the thermoplastic porous printing material. As other heat generating material fine powders, metal fine powders such as aluminum and brass can be used. The exothermic fine powder is not particularly limited as long as it generates heat by infrared rays and melts the thermoplastic resin.

Reference numeral 2 denotes a manuscript sheet, which is a manuscript sheet on the printed body 1 where a character or figure serving as a stamp face is formed and a remaining portion is partitioned by infrared transmission.
The document sheet 2 may be a transparent or translucent sheet, and the material needs to be a substance having a higher heat melting temperature than the material of the printed body. The material of the character or figure is not limited as long as it is a substance that absorbs and reflects infrared rays. As the substance to be absorbed, carbon or fine metal powder used in the printing body can be used. In addition, as the substance that reflects infrared rays, scaly aluminum, sheet-like aluminum members, and the like can be used.

Reference numeral 3 denotes a holding unit which can fix the side opposite to the printing surface of the printing body 1 with an adhesive or a member for holding and fixing the printing body. The holding unit 3 holds the stamp by hand at the time of stamping.
Although not in the present invention, it is also possible to replenish ink on the printing body 1 by providing a conventionally known ink replenishing port.
FIG. 2 is a printed body that forms a part of the spherical shape of the present invention. In the embodiment of the present invention, a thermoplastic resin is injected into a hemispherical mold and molded. Then, a hemispherical printing body of continuous porous body can be created.

  In the stamp creation method, the original sheet 2 is set so that it does not become a mirror image when the original sheet 2 is stamped. Then, when light (especially infrared rays) is radiated several times from the original sheet 2 side, the infrared rays emitted by the material that absorbs or reflects the infrared rays that form the characters and figures on the original sheet 2 are changed to the portions of the letters and figures. Shut off with. At the same time, the other part transmits infrared rays and reaches the surface of the printing body 1. Then, the exothermic fine powder mixed in the printing body 1 generates heat by the infrared rays, and the porous portion is melted by the heat. Then, this part becomes a part where ink does not bleed out and closes the porous part. In addition, the porous portions of the printed body remain in the portions where the above-described characters and drawings exist, and ink can ooze out.

Next, when a hot plate 4 (especially a spherical hot plate 4) is used, the inner surface of the hot plate 4 becomes imprinted characters or drawings as recesses, and the porous portion becomes the portion where the ink oozes out. . The remaining portion is melted and sealed by the heat of the hot plate 4 so that the ink does not bleed out.
In this way, a printed body is created.
In such a stamp, a non-printed product can deal with uneven surfaces by applying a uniform pressing force to not only the uneven surface or flat surface but also the other surface to be printed.

Unlike the pad printing pad, it is not necessary to transfer the ink and can be continuously printed. In addition, since the stamp is a method of self-sufficiency ink and melts the thermoplastic resin to create the marking surface, only the imprinted part becomes the part where the ink oozes out. Unlike that, dirt can be prevented and a beautiful imprint can be obtained.
Further, when the melted portion where the ink on the printing surface does not bleed is damaged, the repair can be easily performed by light, a hot plate or the like.

The partial perspective view of the Example of this invention. Sectional drawing of the Example of this invention. The stamp face creation explanatory drawing at the time of infrared rays use of the Example of this invention. The stamp face creation explanatory drawing at the time of use of the heat plate of the Example of this invention.

Explanation of symbols

1: Print body 2: Document sheet 3: Holding part 4: Hot plate

Claims (1)

In a stamp comprising a printing body holding portion for holding a printing body and the printing body, the printing body is made of a continuous porous thermoplastic resin, and a printing surface portion of the printing body forms a part of a spherical shape. Characteristic stamp.

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