JP2911348B2 - stamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp, and more particularly, to stamping on a surface such as paper, cloth, wood, etc., which is generally made of a material that absorbs ink for a stamp. In addition, the present invention relates to a stamp used for the purpose of imprinting on a surface (ink non-absorbing surface) generally made of a material that does not absorb the ink for stamping, such as metal, glass, and plastic.

[0002]

2. Description of the Related Art Conventionally, when printing on an ink non-absorbing surface, first, a desired character,
A stamp surface is formed by forming a symbol, a graphic, or the like (a character, a symbol, a graphic, a pattern, or any other expression form, or a combination of two or more of them). Next, a so-called immortal ink (oil-based ink) or a fast-dry immortal ink is attached to the stamp surface of the stamp body using a stamp stand. Then, the stamp surface of the stamp body is pressed against an ink non-absorbing surface such as metal, glass, or plastic to be stamped.

In the case where a large number of seals are made by such a method, the ink on the stamp base must be adhered to the stamped surface of the stamped body every time the seal is applied, which is extremely troublesome.
Therefore, the stamp body is made of a material through which the stamp ink can pass, and this stamp body is attached to one end of the holder for holding the stamp body, the ink is stored inside the holder, and the ink is gradually transferred to the stamp body. A bleeding stamp was developed.

However, in such a stamp, ink oozes out of the entire stamp surface of the stamp body. In other words, the ink oozes out from both the stamped portion of the stamped surface where the characters, symbols, figures, and the like are formed in a convex shape, and the non-marked portion provided at a height lower than the stamped portion.

For this reason, when the stamped part is not pressed perpendicularly to the surface to be stamped, when the area of the stamped part is too small compared to the non-marked part, or when the stamped part is formed only at the center of the stamped surface Alternatively, if the surface to be stamped is too strongly stamped, there is a disadvantage that the ink in the non-seal portion adheres to the surface to be stamped.

[0006] Further, the ink stored in the holder oozes not only from the stamped portion but also from the non-marked portion of the stamp body. For this reason, there is a problem that ink evaporates quickly, and ink must be replenished frequently in the ink replenishment type stamp, and the ink life is not long in the ink replenishment type stamp.

The applicant of the present application has developed a stamp having the following characteristics in order to solve the above-mentioned problems, and has already filed the application (Japanese Patent Laid-Open No. 4-363285).
No. published as an application publication).

[0008] That is, as described in claim 1 of the specification of the above publication, the stamp has a stamp body made of a continuous porous body through which stamp ink can be transmitted (passed). A holder which holds the stamp body and is provided with an ink storage section therein, wherein the stamp face of the stamp body has characters, symbols, figures, etc. formed in a convex shape and is capable of transmitting ink. And a non-marking part which is formed to be lower than the marking part and is sealed by heat welding so that ink cannot pass therethrough. Further, a stamp body is attached to one end of the holder in a joined state. And the joint between the two is sealed by heat welding.

And in such a stamp,
Paragraph number on the second page of the same specification

It has the operation and effect as described in the section [0009]. That is, due to the heat welding treatment on the stamp surface of the stamp body, the surface of the continuous pore body is melted and solidified in a state where predetermined characters, symbols, figures, etc. are left to form a non-marked portion. Indicates that the pores of the continuous pore body are crushed. The stamp body is attached to one end of the holder in a joined state, and the joint between the two is melted and solidified by thermal welding. Therefore, the ink does not ooze out of the portion other than the seal portion where the predetermined characters, symbols, figures, and the like are formed. In addition, since only the stamped portion of the stamp surface comes into contact with the external air, evaporation of the ink and the solvent in the holder can be minimized.

[0010]

However, since such a stamp is supposed particularly in the case where the stamp body is flat, the following inconvenience may occur in a special use.

That is, when the surface to be stamped is substantially flat, even if the non-seal portion and the mounting portion of the stamp body come into contact with the surface to be stamped, there is no risk of unnecessary ink adhering to the surface, and the clean surface is clean. Stamping can be performed easily and comfortably continuously.

However, when the surface to be imprinted is not flat, and there is a step or the like, unevenness, or curvature, there is a possibility that clear stamping is difficult or impossible. .

The present invention has been made in view of the above-described circumstances, and has an object to be applied to a case where the surface to be stamped is not flat, has a step or the like, has irregularities, or is curved. However, there is no danger of unnecessary ink adhering to the same surface, the ink and solvent contained in the holder evaporate slowly, and a stamp is provided that enables clear stamping continuously and easily and comfortably. Is to do.

[0014]

According to the present invention, a round cylindrical stamp body made of a continuous pore body through which ink for stamping can pass, and a stamp body having a cylindrical shape and fitted over a peripheral wall thereof. And a frame body that holds the ink storage section and the ink passage opening, and a frame body that rotatably holds the holder. The stamp face of the stamp face body has characters, symbols, figures, etc. that are convex. And a non-marking portion formed at a lower height than the marking portion and sealed by heat welding so that the ink cannot pass therethrough. Is fitted on the peripheral wall of the holder so as to cover the opening, and the boundary between the peripheral edge of the stamp body and the peripheral wall or the peripheral edge of the holder is heated by heat welding phosphorus.
The seal is provided by heat welding in which the stamp is fitted over and abutted on the boundary so that ink cannot pass through the boundary.

[0015]

According to the stamp of the present invention, the surface of the continuous pore body is melted in a state where predetermined characters, symbols, figures, etc. (marked portion) are left by solidification by heat welding on the stamp surface of the stamp body, and then solidified. Since the non-marking portion is formed by the pressing, the pores of the continuous pores are crushed and sealed in the non-marking portion. The stamp body is fitted over the peripheral wall of the holder so as to cover the ink passage opening, and the boundary between the stamp body and the holder is similarly solidified by thermal welding.

Thus, the stamp body is sealed at the non-seal portion and the boundary portion, so that the ink stored in the ink storage portion of the holder does not pass outside from these portions. Therefore, even if the non-seal portion or the boundary portion of the stamp body comes into contact with the surface to be stamped, there is no possibility that unnecessary ink adheres to the surface.

Further, since the non-marked portion and the boundary portion of the stamp body are sealed, the portion that comes into contact with the external air is limited to only the stamped portion of the stamp surface. Therefore, evaporation of the ink stored in the holder can be minimized, so that the ink replenishment type stamp does not need to be replenished frequently, and the ink exhaustion type stamp has a long ink life. Be longer.

In the present invention, the stamp body is configured as a round cylindrical member. As the continuous pores constituting the stamp body, those made of a polyolefin resin such as polypropylene or polyethylene are preferable. As the material of the holder, it is preferable to use the same material as the polyolefin resin which is the raw material of the continuous pores constituting the stamp face. This is because heat sealing is performed after the stamp body is fitted on the peripheral wall of the holder so as to cover the opening for ink passage.
In the step of fusing and solidifying and welding the portion to be joined (boundary portion) by heat, if the raw materials of both are the same, the same heat welding conditions as when forming the non-marked portion on the stamp body are used. This is because it is possible to easily perform reliable heat welding between the stamp body and the holder under the conditions.

The holder is formed as a hollow or solid cylindrical member. The holder is provided with one or more ink storage units and one or more ink passage openings. In the case of the ink refill type stamp,
An opening, such as an ink inlet, is provided to replenish the ink.

The stamp body is fitted over the peripheral wall of the holder so as to cover the ink passage opening. And
The boundary between the two, that is, the portion formed by the peripheral edge of the stamp body and the peripheral wall of the holder, or the portion formed by the peripheral edge of the stamp body and the peripheral edge of the holder is sealed by heat welding.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to this.

FIG. 1 shows the overall configuration of a stamp S according to an embodiment of the present invention. In FIG. 1, the stamp S is
A round cylindrical stamp body 1, a cylindrical holder 2 for holding the stamp body 1, a frame 3 for holding the holder 2 in a rotatable manner, and a stamp body 1 and a holder integrated with the frame 3. Casing 4 covering frame 2 and frame 3
And a handle 5 attached to the upper side of the casing 4
And a cap 6 detachably attached to the lower end of the casing 4 from below.

The stamp body 1 is formed of a continuous pore body through which a fast-drying immortal ink (fast-drying oil-based ink) for a stamp can pass. This continuous pore body is made of a polypropylene resin and has many pores having a three-dimensional network structure. As the continuous pores, it is preferable to use one having a porosity (porosity) of 55 to 75% of the total volume of the continuous pores. The three-dimensional network 1 in the continuous pore body used for the stamp body 1
The size (diameter) of one of the pores (one of the pores) was 0.5 to 30 microns as confirmed by an electron microscope.

The holder 2 is made of a polypropylene resin, and has a hollow cylindrical holder main body 2a having an open end, as shown in FIGS. 2 to 4, and a holder main body 2a.
And a holder cap 2c attached to one end of the holder body 2a and closing the opening thereof.

The holder 2 further has one ink storage 7. The ink storage unit 7 stores imprinting ink for stamping which is immobilized quickly. In addition, holder 2
On the peripheral wall of, an elongated rectangular ink passage opening 9 is provided,
Two upper and lower portions are provided at an angle of 60 degrees in the circumferential direction. The ink storage section 7 is provided with a female screw ink inlet 10 for replenishing the stored ink. A male screw type ink stopper 11 is detachably screwed into the ink inlet 10 via a packing 12 made of polyurethane resin.

Frame 3, casing 4 and handle 5
Is made of a polyacetal resin and has a desired coloring. The cap 6 is made of polypropylene resin,
Be transparent.

The outer peripheral surface of the stamp body 1 is a stamp surface. This stamp face is composed of a stamp section 13 and a non-mark section 14. In the seal section 13, Japanese sentences and English sentences desired to be stamped are arranged in two rows in an inverted state, and are formed in a convex shape. The marking section 13 is capable of passing the ink.
The non-seal part 14 is formed to be lower than the seal part 13, and the entire surface is sealed by heat welding. Therefore, the non-marking portion 14 cannot pass the ink.

The seal portion 13 and the non-seal portion 14 are formed as follows. That is, first, a desired Japanese sentence (“Tenchi Muyo”) and an English sentence (“Thi
sSide Up ”) is formed into a metal engraving mold in which a flat surface is engraved in a concave shape and in two steps. And
With this engraving mold, with its engraved surface facing up, 120-
It is placed on a hot plate heated to a temperature of 180 ° C. and heated to a predetermined temperature.

Next, at one end of the engraving surface of the engraving mold heated to a predetermined temperature, a continuous pore body (before the stamp body 1) made of a polypropylene resin and having a round cylindrical stamp surface portion. , A holder 2 for holding the continuous porous body
And the expected surface of the roller body constituted by the roller body is brought into contact with the roller body.
Next, the roller body is rolled under pressure to the other end of the engraved surface. Then, each of the characters engraved in the engraving pattern is transferred to the expected surface of the roller body.

By the contact, pressurization, and rolling as described above, the contact portion of the continuous pore body in the portion to be stamped is solidified after being melted by heat and the pores on the surface are crushed. And
The non-marked portion 14 is formed by being completely covered with a polypropylene film-like film and sealed.

At the time of the above-mentioned contact, pressurizing and rolling operations, a part of the stamped surface portion of the continuous pore body is fitted into the engraved concave portion on the engraving surface of the engraving mold and protruded. In a state. However, at this time, a part of the stamp surface scheduled portion does not contact the bottom surface of the concave portion on the engraving surface. For this reason, the desired portion of the continuous pore body (the non-contact portion) in the stamped portion of the continuous pore body remains convex in the three-dimensional network structure, and the desired Japanese sentence and English sentence are projected in a reversed state. It is formed and becomes the seal portion 13.

Next, the procedure for assembling the stamp S will be described. First, a round cylindrical stamp body 1 is fitted over the peripheral wall of the holder main body 2a of the holder 2 so as to cover all the openings 9. Next, the holder cap 2c is attached to the holder main body 2a. Thus, the stamp body 1 is held by the holder 2.

When the stamp body 1 is held by the holder 2, the boundary between the peripheral edge of the stamp body 1 and the peripheral wall or the peripheral edge of the holder body 2a is sealed by heat welding. This heat welding uses a ring formed to have a predetermined diameter and heated to a temperature of 120 to 180 ° C.
That is, the ring is fitted over the boundary portion, brought into contact with the boundary portion, and held for 0.2 to 3 seconds. The same thermal welding is applied to the boundary between the holder body 2a and the holder cap 2c to seal them.

After the completion of such heat welding, a predetermined amount of ink is injected into the ink storage section 7 from the ink injection port 10 of the holder 2 with the stamp body 1. After the ink injection, the ink stopper 11 is attached via the packing 12. Then
The holder 2 with the stamp body 1 is mounted on the frame 3 integrated with the casing 4. Then, by attaching the cap 6 to the casing 4, all the assembly operations are completed.

The ink injected into the ink storage unit 7 is automatically supplied from the inner surface to the outer surface of the stamp body 1 through the ink storage unit 7, so that the marking unit 13 of the stamp body 1 always supplies the ink. Can be held.

FIG. 5 shows a state in which stamping is performed on the upper surface of a cardboard box 15 in which predetermined articles are stored using the stamp S according to this embodiment. That is,
A transparent tape 18 for sealing is attached to the upper surface of the cardboard box 15 at the border between the opposing edges 16a and 17a of the two left and right lid flaps 16 and 17.

The upper surface of the cardboard box 15 is stamped with a stamp S across the transparent tape 18. And "Tenchi Muyo" and "This Sid
eUp "is displayed in an endless form with a note written in both upper and lower tiers. There is a slight step between the two opposing edges 16a and 17a, but the note written in two steps is clear.

As described above, the stamp S includes the round cylindrical stamp body 1 and the cylindrical holder 2 for holding the stamp body 1, and the holder 2 can be rolled. In addition, the stamp body 1 and the holder 2
3 except that the ink stored in the ink storage section 7 of the holder 2 does not pass outside from portions other than the seal section 13. Therefore, according to the stamp S, even when the surface to be stamped is not flat but has a step or the like, is uneven, or is curved, the non-seal portion 14 or the boundary portion of the stamp body 1 is stamped. There is no possibility that unnecessary ink will adhere to the surface when it comes into contact with the surface.

Further, in the stamp S, the portion that comes into contact with the external air is limited to only the stamped portion 13 of the stamp body 1. Therefore, according to the stamp S, the holder 2
Since evaporation of the ink stored in the inside can be minimized, it is not necessary to frequently replenish the ink as in the related art.

In this embodiment, the case where the above-mentioned quick-drying immortal ink is used for the stamp S has been described. However, the stamp according to the present invention is not limited to this, and the general immortal ink ( Needless to say, an oil-based ink) or a water-based ink may be used.

In this embodiment, the holder 2
Has been described with respect to the stamp S capable of replenishing ink, but the stamp according to the present invention is not limited to this, and the ink inlet 10 and the like are not provided. The ink may be of a two-use type in which the ink is sealed in advance in the ink container 2.

[0042]

Since the stamp according to the present invention is constructed as described above, even if the surface to be stamped is not flat and has a step or the like, or has irregularities or is curved, the same surface can be used. There is no risk of unnecessary ink adhering to the holder, and the ink and solvent contained in the holder evaporate slowly, so that clear stamping can be performed continuously and easily. Furthermore, in the case of a conventional stamp in which the stamp body is a flat plate, the entire stamped portion of the stamp body comes into contact with the surface to be stamped when stamping, but according to the stamp according to the present invention, the stamp body is Has a round cylindrical shape, so that the stamped portion of the stamp body comes into contact with the surface to be stamped linearly when stamping, and can be stamped lightly. In addition, the non-marked part of the stamp body,
Since the boundaries are sealed together,
Touching points are limited to the stamped part of the stamp body.
To evaporate the ink stored inside the holder.
Can be minimized. In addition, the periphery of the stamp body
The boundary between the peripheral wall and the peripheral edge of the holder
At the boundary of the boundary, a heated heat welding ring is
It is made by heat welding,
Easy and quick, reliable seal with no seal unevenness
You can get

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a stamp according to an embodiment of the present invention, with a portion cut away.

FIG. 2 is a central longitudinal sectional view of a part of the stamp.

FIG. 3 is a central cross-sectional view of a part of the stamp.

FIG. 4 is a partial perspective view of a holder constituting the stamp.

FIG. 5 is a perspective view of a cardboard box stamped using the stamp.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 stamp body 2 holder 3 frame 4 casing 5 handle 6 cap 7 ink storage section 9 ink passage opening 10 ink inlet 11 ink stopper 12 packing 13 stamping section 14 non-marking section

Claims (2)

(57) [Claims] 1. A stamp body having a round cylindrical shape made of continuous pores through which ink for a stamp can pass, and a stamp body having a cylindrical shape and fitted over a peripheral wall thereof. A holder provided with an opening for use, and a frame body that holds the holder in a rotatable manner. The stamp face of the stamp body is formed such that characters, symbols, figures, etc. are formed in a convex shape, and ink can pass therethrough. It consists of an imprinted part and a non-imprinted part which is formed lower in height than this imprinted part and is sealed by heat welding so that ink cannot pass therethrough. A stamped body covers the opening on the peripheral wall of the holder. The boundary between the peripheral edge of the stamp body and the peripheral wall or peripheral edge of the holder is heated by the hot melt.
A stamp which is sealed by heat welding in which a wearing ring is fitted over the same boundary portion to make contact therewith , so that ink cannot pass through the boundary portion. 2. A continuous pore body constituting a stamp body has continuous pores made of a polyolefin resin and having a three-dimensional network structure. The porosity is 55 to 75% of the total volume, and one of the pores is one. One size is 0.5-30 microns,
2. The stamp according to claim 1, wherein the holder is made of the same kind of polyolefin resin as the continuous pores constituting the stamp body.