JP4825662B2 - Multicolor stamp face - Google Patents

Description

The present invention relates to a printing surface of a multicolor stamp capable of printing a plurality of colors.

As a multi-color stamp that can print multiple colors, a notch is formed on the marking surface made of a continuous porous elastic body that can be impregnated with ink, by a cutting process using a heating means, from the back surface to the vicinity of the surface. A plurality of ink occlusion materials in which an ink non-bleeding portion is formed between the tip of the portion and the surface of the marking surface (Patent Document 1) and a porous material that has fine holes and can be thermally processed are provided in accordance with the ink color. What is classified (Patent Document 2) is known.

JP 2001-205911 A Japanese Patent Laid-Open No. 9-30097

However, in the method using the cutting process described in Patent Document 1, the more complicated the printing, the more complicated the cutting tool, and in some cases, the cutting process may not be possible. Further, in the method based on the classification described in Patent Document 2, there is a problem that as the number of parts to be classified increases, the accuracy of alignment between the respective stamped faces decreases.

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a stamp surface of a multicolor stamp that can be aligned with high accuracy even if it is complicated and numerous by a simple method.

The present invention is a plate-shaped marking surface made of a material that can be impregnated with ink and having a target printing surface formed on one main surface, the first marking surface being impregnated with ink of one color, At least a part of the printing surface is formed by fitting the second printing surface impregnated with ink of another color different from this, so that the respective printing surfaces are flush with each other,
An ink non-permeable layer that does not transmit ink is formed on at least one contact surface of the first and second marking surfaces, and a contact surface between the first and second marking surfaces is a tapered surface. It is characterized by being.

That is, the contact surface of at least two marking surfaces fitted to each other is a tapered surface.

  According to the present invention, since the contact surfaces of at least two marking surfaces fitted to each other are tapered surfaces, the mutual alignment with respect to the marking table can be performed with high accuracy and good work using the tapered surfaces.

  In addition, since the contact surface of at least two marking surfaces fitted to each other is a tapered surface, even if the two ink usage amounts are different, by devising the expanding direction of the tapered surface, Life can be shortened.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view showing a first embodiment of the marking surface of the multicolor stamp according to the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a second view shown in FIGS. It is an expanded sectional view of a marking surface.

The marking surface 1 shown in FIG. 1 is composed of three marking surfaces, a first marking surface 11, a second marking surface 12 and a third marking surface 13, and the second marking surface 12 and the second marking surface are formed in the two holes 111 and 112 formed in the first marking surface 11. Assembling is performed by fitting the three marking surfaces 13 together. The printing surfaces of the marking surfaces 11, 12, 13 are denoted by reference numerals 11a, 12a, 13a, and the opposite surfaces are denoted by reference numerals 11b, 12b, 13b. The printing surface is a main surface on which irregularities corresponding to the intended printing (including patterns and the like) of the multicolor stamp are formed.

Each of the first marking surface 11, the second marking surface 12, and the third marking surface 13 is a flat plate member made of a material that can be impregnated with ink. The material that can be impregnated with ink is not particularly limited. For example, a continuous pore body (such as a foam having continuous pores) is stamped into the shapes of the first stamp surface 11, the second stamp surface 12, and the third stamp surface 13. Alternatively, a mixture of 60 to 90% by weight of a soluble filler such as calcium carbonate mixed with an olefin resin is injection molded into each shape of the first marking surface 11, the second marking surface 12 and the third marking surface 13, and then hydrochloric acid or the like. It can be obtained by leaching the soluble filler by dipping in the solution.

Side surfaces 11c of the two holes 111 and 112 formed on the first marking surface 11 of this example are tapered surfaces having a certain angle that is not perpendicular to the printing surface 11a. Here, the taper surface is such that the opening areas of the holes 111 and 112 increase from the print surface 11a toward the back surface 11b, but may be a reverse taper surface.

The two holes 111 and 112 formed in the first marking surface 11 are shaped so that the second marking surface 12 and the third marking surface 13 are fitted together, and the respective printing surfaces 11a, 12a, and 13a are flush with each other. Has been.

On the other hand, the entire side surfaces of the second marking surface 12 and the third marking surface 13 are also tapered surfaces having a certain angle that is not perpendicular to the printing surfaces 12a and 13a. Here, the print surfaces 12a and 13a are expanded toward the back surfaces 12b and 13b so as to be fitted in the holes 111 and 112 of the first marking surface 11 described above (in other words, the areas of the print surfaces 12a and 13a). The taper surface corresponding to the taper surface 11c of the first marking surface 11 is formed by a reverse taper surface. If so, the first marking surface 12 and the third marking surface 13 may be oppositely tapered surfaces. Further, the tapered surfaces of the second marking surface 12 and the third marking surface 13 do not need to be tapered surfaces in the same direction, and can be tapered surfaces according to the above-described reference.

An ink non-permeable layer 121 that does not transmit ink is formed on the entire circumference of the tapered surfaces (side surfaces) of the second and third marking surfaces 12 and 13. The ink non-permeable layer 121 is not particularly limited. For example, it is impregnated by applying an adhesive to form an adhesive layer that does not allow ink to permeate or by heating and melting the tapered surfaces of the second and third marking surfaces 12 and 13. It is possible to form a layer in which the ink thus applied does not ooze out on the surface.

As a method for heating and melting only the tapered surfaces 12c and 13c of the second marking surface 12 and the third marking surface 13, for example, after applying a solution containing carbon to the tapered surfaces 12c and 13c, the second marking surface 12 and the third marking surface. A method of generating heat by irradiating the whole with light can be mentioned.

In this example, the ink non-permeable layer 121 is formed on the tapered surfaces 12c and 13c of the second marking surface 12 and the third marking surface 13. The ink non-permeable layer 121 is provided between the first marking surface 11 and the second marking surface 12. Since it is intended to prevent mixing of the respective inks between the first marking surface 11 and the third marking surface 13, it may be provided on the tapered surface 11c of the first marking surface 11 depending on the situation such as workability.

Next, a method for determining the orientation of the tapered surfaces 11c, 12c, and 13c of the first marking surface 11, the second marking surface 12, and the third marking surface 13 will be described.

In a multicolor stamp without continuous ink replenishment from the back side of the printing surface, the ink initially impregnated on each printing surface 11, 12, 13 decreases when the printing is continued. This ink decrease rate correlates with the print area. In other words, the larger the print area, the faster the ink decrease rate. However, when there is no ink on any of the marking surfaces 11, 12, 13, the function as a multicolor stamp is achieved even if ink remains on the other marking surface. Ends there.

Here, the number of times that each of the marking surfaces 11, 12, and 13 can be printed is a value obtained by dividing the ink impregnation amount by the ink amount used for one printing.

Then, by forming a tapered surface on the marking surface as in this example, the volume of one fitted marking surface (proportional to the ink impregnation amount) can be increased, and the volume of the other marking surface can be decreased. For example, when the printing surface 11a of the first marking surface 11, the printing surface 12a of the second marking surface 12, and the printing surface 13a of the third marking surface 13 are as shown in FIG. 2, the second marking surface 12 as shown in FIG. When the taper surfaces 12c and 13c of the third mark surface 13 are formed so as to expand, the volumes of the second mark surface 12 and the third mark surface 13 are larger than when formed at a right angle or when the taper surfaces are reversed. Each increases, thereby increasing the initial ink impregnation amount. Further, since the volume of the first marking surface 11 is reduced accordingly, the initial ink impregnation amount is reduced.

Thus, when forming the tapered surface of the present invention, the ratio of the printing area (in other words, the amount of ink used) and the volume (in other words, the amount of ink impregnation) of each of the marking surfaces 11, 12, 13 is obtained. Based on the ratio, it is preferable to determine the directions of the tapered surfaces 11c, 12c, and 13c to be as equal as possible. Moreover, you may change the angle of taper surface 11c, 12c, 13c.

In addition, the orientation of the tapered surfaces 11c, 12c, and 13c can be determined simply based on the printing areas of the respective marking surfaces 11, 12, and 13.

By the way, in order to assemble as a multicolor stamp, the first stamp surface 11 and the second stamp surface 12 and the third stamp surface 13 are fitted together, and the back surface 11b, 12b, 13b is pasted to the stamp table 2 with an adhesive or the like. . As a result, no ink oozes out from the back surfaces 11b, 12b, 13b of the marking surfaces 11, 12, 13, and no ink is present between the contact surfaces (tapered surfaces) 11c, 12c and 11c, 13c between the marking surfaces. Since the transmissive layer 121 is formed, ink bleeding is prevented.

As described above, according to the marking surface of this example, the contact surfaces of the three marking surfaces 11, 12, 13 fitted together are the tapered surfaces 11c, 12c, 13c. The taper surface can be used with high accuracy and good work life.

Further, since the contact surfaces of the three marking surfaces 11, 12, and 13 fitted together are tapered surfaces 11c, 12c, and 13c, the direction of expansion of the tapered surface is devised even if the three ink usage amounts are different. As a result, the lifespan of the inks on the three marking surfaces can be made closer.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, FIG. 4 is a perspective view showing a second embodiment of the marking face of the multicolor stamp according to the present invention, and FIG. 5 is a sectional view taken along the line VV in FIG. In addition to the type in which the marking surface is fitted into the hole, as shown in the figure, the side surfaces of the two or more marking surfaces 11 and 12 are constituted by the tapered surfaces 11c and 12c, and these are brought into contact with each other to determine the position of the marking surface. There are effects of improving the alignment accuracy and leveling the ink life.

It is a disassembled perspective view which shows 1st Embodiment of the marking surface of the multicolor stamp which concerns on this invention. It is sectional drawing which follows the II-II line of FIG. It is an expanded sectional view of the 2nd marking surface shown in FIG.1 and FIG.2. It is a perspective view which shows 2nd Embodiment of the marking surface of the multicolor stamp which concerns on this invention. It is sectional drawing which follows the VV line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Marking surface 11 ... 1st marking surface 11a ... Printing surface 11b ... Back surface 11c ... Side surface (taper surface)
111, 112 ... hole 12 ... second marking surface 12a ... printing surface 12b ... back surface 12c ... side surface (tapered surface)
13 ... Third marking surface 13a ... Printing surface 13b ... Back surface 13c ... Side surface (tapered surface)

Claims (4)

It is composed of a material that can be impregnated with ink, and is a plate-shaped marking surface in which a target printing surface is formed on one main surface,
The first printing surface impregnated with ink of one color and the second printing surface impregnated with ink of another color different from this are fitted so that the respective printing surfaces are flush with each other, At least a part of the printing surface is formed;
An ink non-permeable layer that does not transmit ink is formed on at least one contact surface of the first marking surface and the second marking surface;
A contact surface between the first stamp surface and the second stamp surface is formed by a tapered surface. The multiple marking surface of the first marking surface and the second marking surface has a tapered surface that expands from the printing surface toward the opposite surface of the marking surface. Color stamp face. Of the first marking surface and the second marking surface, the marking surface having a smaller ratio defined by volume / printing area has a tapered surface that expands from the printing surface toward the opposite surface of the marking surface. The stamp face of the multicolor stamp according to claim 1. A hole in which the other marking surface is fitted is formed in one of the first marking surface and the second marking surface, and the entire side surface of the hole and the entire side surface of the other marking surface are the contact surface. The stamp face of the multicolor stamp according to claim 1.

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