JP3600014B2 - Manufacturing method of penetration stamp - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of manufacturing a penetrating stamp that can be repeatedly stamped without requiring a stamp table.
[0002]
[Prior art]
Conventionally, a permeation stamp using a thermoplastic resin foam having continuous pores as a stamping material is used to form a stamp in the state of a stamping material whose stamping surface is not processed, and then contact a heated irregularity mold with the stamping material surface or use a thermal head. And the entire surface is swept to form a stamped surface. Finally, ink is injected to impregnate the stamping material with ink.
[0003]
FIG. 7 is a schematic view showing an example of a conventional method for manufacturing a penetration mark stamp.
In FIG. 7A, reference numeral 1 denotes a stamping part of a penetrating printing method, in which a stamp frame 6 accommodates an ink storage part 5 and a stamping material 2 made of a thermoplastic foam sheet having continuous pores. No stamping surface has yet been formed on the surface of the stamping material 2. Reference numeral 30 denotes an engraving mold, which is composed of a mold surface 31 and a heater 32. After heating the mold surface 31 with the heater 32, the stamp unit 1 is pressed against the engraving mold 30. As a result, the surface portion of the stamping material 2 that is in contact with the convex portion of the engraving die 30 is melted and the pores are crushed to become the ink non-leakage portion 4, and the surface portion of the stamping material 2 located in the concave portion of the engraving die 30 is not heated. The pores remain as they are, forming ink bleeding portions 3 to form a stamped surface.
[0004]
In this way, it is possible to obtain the stamp unit 1 having the stamped surface as shown in FIG. 7B. When the ink is injected from the ink injection unit 7 into the stamp unit 1 on which the stamp surface has been processed, the ink is accumulated in the ink storage unit 5 and the ink gradually permeates into the stamp material 2. After several hours, the ink reaches the surface layer of the stamped surface as shown in FIG. 7C, and the penetrating stamp is completed.
[0005]
Recently, the present inventors have developed a polyethylene foam sheet (manufactured by Yamahachi Chemical Co., Ltd.) that can be used as a stamp material. As a result, the stamped surface can be formed quickly and easily using a printer of a thermal head connected to a word processor or a personal computer, instead of the stamped surface forming method using an engraving die that requires a plate making process. For example, Japanese Patent Application Laid-Open No. 7-251558 discloses a method of forming a stamp surface with a thermal head on an ink-impregnated foam sheet having continuous pores.
[0006]
[Problems to be solved by the invention]
In these conventional methods, ink is impregnated after forming the stamped surface, such as forming the stamped surface after forming the stamped surface, or forming the stamped surface after forming the stamp portion as shown in FIG. Has been used as a permeation stamp. This is because if the printing material is impregnated with the ink, even if the printing material surface is heated, the non-volatile substance of the ink will inhibit the blockage of the fine pores of the printing material and the ink non-exuding portion cannot be formed, and the printing surface will not be formed. It is not possible. Therefore, even if the stamp surface is formed, it is not possible to immediately imprint the stamp, and it is not possible to confirm the design of the stamp surface. In particular, since the printing material of a high-definition penetrating printing stamp has minute pores, it takes several hours or more to impregnate the entire printing material with ink. For this reason, although the stamped surface can be formed quickly, it was not possible to immediately confirm the picture by stamping.
In view of the above, the present invention is a manufacturing method of a permeation stamp which is a permeation stamp which uses a fine continuous pore body as a stamp material, and which can process a stamp surface after impregnating the stamp material with ink and immediately imprint. The aim is to provide a method.
[0007]
[Means for Solving the Problems]
The method for manufacturing a penetrating stamp according to the present invention, after impregnating the printing material with the ink, impregnates the surface of the printing material with a volatile solvent, and processes the printing surface by locally applying heat before the solvent is volatilized. It is characterized by the following.
It is preferable to use a polyolefin resin as the stamp material, and it is preferable to use a volatile solvent having a boiling point lower than the softening temperature of the polyolefin resin as the volatile solvent.
Further, when processing the printing surface of the printing material, it is preferable to process the printing surface by running the surface of the printing material with a thermal head.
[0008]
When a volatile solvent is impregnated on the surface of a printing material in which the entire printing material is impregnated with the ink, the volatile solvent having a large penetrating power pushes up the ink, and a printing material layer in which the volatile material is impregnated on the printing material surface layer is formed. When the surface of the printing material is heated by the thermal head in this state, the solvent is volatilized and the printing material is softened, and the fine pores of the printing material are closed before the ink seeps out. Thereby, an ink non-exuding portion can be formed, and a stamp surface can be formed. In addition, when the stamp surface is pressed against the paper immediately after the stamp surface is formed, the stamp can be surely performed by pressing several times.
[0009]
As a raw material of the stamp material whose stamp surface can be processed by the thermal head, for example, a polyethylene foam manufactured by Yamahachi Chemical Co., Ltd. can be used. In this case, as the volatile solvent, ethanol, acetone, or the like having a boiling point equal to or lower than the softening temperature of polyethylene can be preferably used. The ink used may be water-soluble or fat-soluble, and the stamp may be a flat type or a rotary type.
[0010]
Thus, according to the present invention, the stamping process can be performed in the final process by changing the order of the stamp manufacturing process, and since the stamping surface can be processed by the thermal head, the stamping surface can be processed in the form of a printer connected to a personal computer or word processor. it can. For this reason, it is possible to quickly form a stamp pattern desired by various customers, and immediately confirm the stamp pattern by stamping.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to only these embodiments.
FIG. 1 is a cross-sectional view showing the infiltration stamp according to the present embodiment. Even if a conventional manufacturing method is used, the same product can be finally obtained. In the figure, reference numeral 10 denotes a stamp section, in which a stamp frame 15 accommodates an ink storage section 14 in which ink is impregnated and a stamp material 11 in which ink is impregnated. A stopper 17 is attached to the ink injecting section 16, and a penetrating stamp is completed by attaching a case 19 and a cap 18 to the stamp section 10.
[0012]
Next, the flow of the method of manufacturing the penetration stamp according to the present embodiment will be described with reference to FIGS.
FIG. 2 is a cross-sectional view showing a stamp portion before stamping and before ink injection. Ink is injected from the ink injection section 16 of the stamp section 10 and a stopper 17 is attached. The injected ink accumulates in the ink storage unit 14 and gradually permeates the stamp material 11. As a result, a stamp portion as shown in FIG. 3 before stamping and after ink injection is obtained.
[0013]
Next, as shown in FIG. 4, the surface of the stamp material 11 of the obtained stamp unit 10 is pressed against a foam 20 impregnated with ethanol. As a result, the ethanol having a large penetrating force pushes the ink into the inside of the printing material 11, and a printing material layer impregnated with ethanol is formed on the surface layer of the printing material 11. FIG. 5 shows a cross-sectional view of the stamp portion after the stamp material 11 of the stamp portion 10 is pressed against the foam 20 impregnated with ethanol, and ethanol instead of ink is applied to the surface layer 21 of the stamp material 11 impregnated with ink. 5 shows a state in which an impregnated layer has been formed.
[0014]
FIG. 6 is a schematic diagram showing a state in which the entire surface of the printing material 11 is swept by the thermal head 41 via the protective film 42 to process the printing surface. In the portion heated by the thermal head 41, the solvent of the printing material surface layer is volatilized, and pores are crushed by heat before the ink seeps out, and the ink is fused to form the ink non-bleeding portion 13. In portions not heated by the thermal head 41, the pores on the surface of the printing material remain as they are, and the ink bleeds 12 are formed. As a result, a desired stamp surface is formed by forming the ink non-exuding portion 13 and the ink exuding portion 12 on the surface of the printing material 11. If the stamp portion 10 is stamped on paper immediately after the stamp surface is formed, the ink is first stamped in a state where the ink partially dilutes with the solvent remaining on the surface layer 21 of the stamp material 11, but the ink oozes out by pressing several times. You will be able to stamp clearly.
[0015]
The following effects can be obtained in the method of manufacturing a penetration stamp according to the present embodiment.
In a state where the printing material 11 is impregnated with the ink, the surface of the printing material 11 is impregnated with ethanol and the ink is pushed up to the inside of the printing material 11, whereby the printing surface can be formed using the thermal head 41. In addition, it is possible to seal immediately after the formation of the stamp surface.
[0016]
The technical scope of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention. For example, although the present embodiment has been described using the example of the flat stamp, the present invention can be applied to a rotary stamp or a multicolor stamp. In addition, in the above embodiment, the impregnation of the volatile material on the surface of the printing material was performed by pressing the printing material against the foam impregnated with the volatile solvent, but was performed by dropping the volatile solvent directly onto the surface of the printing material. It is also possible.
[0017]
【The invention's effect】
As described in detail above, according to the present invention, it is possible to perform the stamping process in a state where the stamping material is impregnated with the ink, overturning the common sense of the penetrating stamps that the stamping process cannot be performed after the stamping material is impregnated with the ink. It can be stamped as soon as the stamp surface is processed. Moreover, a thermal head, which is generally used in thermal transfer printers and thermal paper printers, can be used for stamping, and if a stamp pattern is drawn with a personal computer or word processor, stamping can be performed immediately on the spot. In addition, since the seal can be immediately stamped and the design of the stamp can be confirmed, for example, the stamp can be processed at a store so that it can be sold immediately, and the customer can select a design or enter a name to enter the desired design. Stamps can be created and vending machines can be sold.
In particular, since a variety of stamping surface forming processes required by the customer can be performed as the final process of stamp manufacturing, a large number of stamp portions that have not been stamped can be produced. The effect of solving the contradiction between the manufacturing industry, which wants to produce the same product in large quantities, and the desires of consumers who want their own products, which is diverse, is extremely large.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a penetration stamp according to an embodiment.
FIG. 2 is a cross-sectional view showing a stamp before stamping and before ink injection.
FIG. 3 is a sectional view showing the stamp before stamping and after ink injection.
FIG. 4 is a cross-sectional view showing a stamp immediately before ethanol impregnation.
FIG. 5 is a sectional view showing a stamp after ethanol impregnation.
FIG. 6 is a schematic diagram showing a state in which the entire surface of the printing material is swept by the thermal head to process the printing surface.
FIG. 7 is a schematic view showing an example of a conventional method for manufacturing a penetration stamp.
[Explanation of symbols]
REFERENCE SIGNS LIST 10 stamp portion 11 stamp material 12 ink exudation portion 13 ink non-exudation portion 14 ink storage portion 15 stamp frame 16 ink injection portion 17 stopper 18 cap 19 case 20 foam 21 surface layer 30 engraving mold 31 mold surface 32 heater 41 thermal head 42 protection the film

Claims (3)

A method for producing a permeated stamp using a thermoplastic resin foam having continuous pores as a stamping material,
After the ink is impregnated in the stamp material, the surface of the stamp material is impregnated with a volatile solvent, and the stamp face is processed by locally applying heat before the solvent is volatilized. Method. The method according to claim 1, wherein a polyolefin-based resin is used as the stamp material, and a volatile solvent having a boiling point lower than the softening temperature of the polyolefin-based resin is used as the solvent. The method according to claim 1, wherein, when processing the stamp surface of the stamp material, the stamp surface is processed by running the surface of the stamp material with a thermal head.

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