JP5099588B2 - How to create stamp stamps - Google Patents

Description

  The present invention relates to a stamp stamping surface creation method for creating a stamping surface by irradiating infrared rays onto a stamping material on which a stamping surface is not formed.

Stamps using a thermoplastic resin porous material as a printing material are widely known, and the stamp stamping surface creation method is a method using a mold as in JP-A-50-155323 and JP-A-60-193686, Various methods are known, such as a method using a thermal head printer as disclosed in Japanese Utility Model Publication No. Hei 6-45753 and Japanese Patent Laid-Open No. 7-251558 and a method utilizing heat by infrared irradiation as disclosed in Japanese Patent Laid-Open No. 8-72376.
Japanese Patent Laid-Open No. 8-72376 is very interesting as a toy because there are hobby processes such as a process of creating a document and a process of irradiating infrared rays. In the invention, a printing plate that is a porous thermoplastic resin body having open cells is brought into contact with a heating plate containing a substance that generates heat by absorbing infrared rays. The stamp face is created by bringing a document on which the image is drawn into contact with each other and irradiating infrared rays from the document side. The phenomenon is as follows.
(1) Phenomena on the original: When infrared rays are irradiated from the original side, exothermic materials such as carbon (portions where characters, figures, etc. are drawn) absorb the infrared rays and generate heat. On the other hand, infrared rays are transmitted through a portion where no exothermic substance exists (a blank portion where characters, figures, etc. are not drawn) and does not generate heat.
(2) Phenomenon on the heating plate: The portion corresponding to the heating material of the document does not generate heat because infrared rays do not reach it, and is slightly heated by the heat of the heating material of the document. On the other hand, the infrared rays that have passed through the portion of the document where no exothermic material exists are absorbed by the corresponding portion of the heating plate and generate heat.
(3) Phenomenon on the surface of the printing material: Since the temperature of the slightly heated portion of the heat generating plate is low, the thermoplastic resin porous body cannot be melted. On the other hand, since the temperature of the part of the heat generating plate that is generating heat is sufficiently high, the thermoplastic resin porous body is melted to crush the open cells.

In carrying out the invention as disclosed in Japanese Patent Application Laid-Open No. 8-72376, an infrared exposure machine that is sometimes called a thermal copying machine or a plate making machine for irradiating infrared rays is mainly used. Japanese Patent Publication Nos. 59-007371 and 10-000843 are well known.
These infrared exposure machines are such that a pressing plate is positioned so as to face the main body in a main body incorporating an infrared irradiation device having a transparent plate capable of transmitting infrared light on the upper surface, and between the transparent plate and the pressing plate. In this configuration, an infrared irradiation lamp emits light while sandwiching an original and a thermoplastic resin porous printing material and applying a clamping pressure to create a printing surface.
However, when a stamp is produced using these infrared irradiation apparatuses, the peripheral portion of the thermoplastic resin porous printing material may become unprinted. This is because when the thermoplastic resin porous stamping material is sandwiched between the transparent plate and the pressing plate and pressed, the pressure applied to the peripheral edge of the thermoplastic resin porous stamping material escapes to the outside, and sufficient pressure is applied to the peripheral edge. It seems that there is not.
Therefore, in a portion where the melting is insufficient and the continuous bubbles are not crushed, a correction work such as melting an unmelted portion using a heating jig such as a soldering iron has to be performed manually.

Japanese Utility Model Publication No. 52-001313 Japanese Patent Publication No.59-007371 JP-A-10-000843

  An object of the present invention is to solve the above-mentioned problems and to provide a stamp marking face creation method capable of forming a marking face up to the peripheral edge of a thermoplastic resin porous marking material.

In order to solve the above-mentioned problems, a stamp stamping surface producing method according to a first aspect of the present invention includes a main body including an infrared irradiation device and a transparent plate capable of transmitting infrared light attached to the upper surface, and the main body. Heat that does not form a transparent or translucent elastic rubber sheet, manuscript, or marking surface on the transparent plate using an infrared exposure machine that can be pressed from above to the transparent plate. The plastic sheet is placed in the order of the porous stamping material to form a laminated state , and the rubber sheet, the original and the porous stamping material are in close contact with each other, and the porous stamping material is fitted into the rubber sheet through the original. Irradiate infrared rays from the transparent plate side while applying pressure from above with a pressing plate, and form a printing surface with a non-porous protective coating on which the ink cannot bleed on the surface of the porous printing material and the remaining portion through which the ink can bleed. Stamp stamp face forming how to.
According to a second aspect of the present invention, there is provided the stamp stamping surface producing method according to the first aspect , wherein the thermoplastic resin porous stamp is unitized by accommodating and fixing the stamp in a stamp holder. .

  According to the method for producing a stamp surface of a thermoplastic resin porous printing material using an infrared exposure machine of the present invention, a rubber sheet, a document, and a porous printing material are sandwiched between a transparent plate and a pressing plate of the infrared exposure machine. Since the pressure is applied, the porous stamping material is slightly fitted into the rubber sheet and is sandwiched. Therefore, since the peripheral edge of the porous stamping material can receive a sufficient pressure without escaping to the outside, heat from infrared rays is completely delivered to the peripheral edge, and a complete marking surface can always be formed.

Hereinafter, the best mode for carrying out the present invention will be described.
The infrared exposure machine used in the present invention has a main body in which an infrared irradiation device is incorporated and a transparent plate capable of transmitting infrared rays is attached to the upper surface, and a press capable of being pressed from above the main body toward the transparent plate. It consists of a board. A transparent protective cover such as a plastic film such as a polyethylene film or a polyethylene terephthalate film may be affixed to the surface of the transparent plate for the purpose of preventing scratches and dirt.
Here, the light amount adjusting plate may be mounted on the transparent plate of the infrared exposure machine so as to be replaceable. The light amount adjustment plate may be made of at least one transparent acrylic plate or polished glass-like cloudy acrylic plate, and can control the output amount, light emission amount, heat generation amount, etc. of an infrared irradiation device such as an infrared irradiation lamp. In consideration, it is selected from the optimal combination. A transparent protective cover such as a plastic film such as a polyethylene film or a polyethylene terephthalate film may be affixed to the surface of the light amount adjusting plate for the purpose of preventing scratches or preventing dirt.

In the present invention, a printing material, a document, and a rubber sheet are indispensable.
A thermoplastic resin is used as the material of the printing material of the present invention. In particular, a thermoplastic resin that melts at 50 ° C. to 300 ° C. can be used. For example, polyethylene, polypropylene, polybutylene, polyurethane, polystyrene, polyvinyl chloride, polyester, polycarbonate, polyethylene thermoplastic elastomer, polypropylene thermoplastic elastomer Polybutylene-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, polystyrene-based thermoplastic elastomers, polydiene-based thermoplastic elastomers, polychloride-based thermoplastic elastomers, ethylene vinyl acetate copolymer resins, and the like can be used. Among these, polyolefin thermoplastic resins such as polyethylene, polypropylene, ethylene-α olefin copolymer, polyethylene thermoplastic elastomer, and polypropylene thermoplastic elastomer are particularly preferably used.
In addition, as the printing material, a non-formed material on which a character or the like has not yet been formed is used. The use of a thermoplastic resin porous printing material having no marking surface is extremely useful because a stamp can be produced in a necessary amount at a storefront or the like when necessary.
Further, a porous material is used as the stamp material. When a porous printing material is used, a so-called penetrating mark in which ink can be incorporated can be obtained.
In the present invention, a single porous stamp material can be used, or a unit obtained by accommodating a porous stamp material in a stamp holder can also be used.

In order to prepare the original of the present invention, first a block is created by a computer or the like, and then the block is output to a sheet using a dry copying machine or a laser printer that forms an image by attaching carbon toner. Create a manuscript.
As the paper used in the present invention, a transparent sheet such as polypropylene resin, polyester resin, or polyethylene terephthalate resin or a white opaque sheet, or a sheet that transmits infrared rays, such as tracing paper or PPC paper, can be used.
As the manuscript, one that is divided and formed by a portion where a character or figure to be a stamp face is formed and the remaining portion and that can obtain a difference in infrared transmittance is used. Specifically, a transparent sheet or a white opaque sheet is used. Characters or figures drawn with heat-generating ink that generates heat when irradiated with infrared rays on one side, or letters or figures such as PPC paper or OHP paper by a copying machine formed as an infrared-absorbing film on the sheet surface, paper Examples include letters or figures drawn with ink or transfer tape (white type character correction tape, etc.) that reflects infrared rays on one side, or punched letters or figures on a sheet that does not transmit infrared rays. be able to.
Next, after wrapping the original sheet with a release film such as a laminate film that can transmit infrared rays, the original sheet of the present invention is obtained by cutting the original sheet into the same size as the outer periphery of the porous stamp material.

Next, the rubber sheet will be described.
As the rubber sheet of the present invention, a sheet having a thickness of about 0.05 to 0.55 mm which is transparent or translucent and has an appropriate elasticity can be used. The reason why it is transparent or translucent is to transmit an effective amount of infrared rays.
Materials include natural rubber, silicone rubber, fluorine rubber, ethylene-propylene rubber, ethylene-propylene-diene rubber, polyethylene thermoplastic elastomer, polypropylene thermoplastic elastomer, polybutylene thermoplastic elastomer, polyurethane thermoplastic elastomer, polystyrene. Rubbers and plastics having elasticity such as thermoplastic thermoplastic elastomers, polydiene thermoplastic elastomers, polychloride thermoplastic elastomers, and ethylene vinyl acetate copolymer resins can be used. Among these, silicone rubber is particularly preferably used from the viewpoints of heat resistance and durability.

In the present invention, a guide jig is used as necessary.
The guide jig is a frame having an inner diameter substantially the same size as the porous stamp material and the original, and is made of a material that is not melted and deformed by heat generated by infrared irradiation.

In order to create the stamp stamp surface of the present invention, first, a transparent or translucent rubber sheet is placed on the transparent plate of the infrared exposure machine, a document is placed thereon, and a thermoplastic resin porous stamp material is placed thereon. Laminate in order. Next, a holding jig for bringing the original and the porous printing material into closer contact is loaded as required. Next, infrared rays are irradiated while pressing from above with a pressing plate so that the original and the porous stamp are in close contact with each other. When the pressing force is released and the porous printing material is taken out, a marking surface is formed having a non-porous protective coating whose surface cannot bleed ink and a remaining portion through which ink can bleed.
Hereinafter, the embodiment will be described in detail.

A mixture of 100 parts by weight of a polyethylene resin having a melting point of 70 ° C., 20 parts by weight of polyethylene glycol having a molecular weight of 400, and 350 parts by weight of sodium chloride having a particle size of 10 to 60 μm is kneaded with a slight amount of carbon black. A sheet-shaped original member is created.
Next, the original member is immersed in warm water to completely remove polyethylene glycol and sodium chloride, and then sufficiently dried to obtain a grayish porous sheet having a thickness of 2.0 mm.
Next, the porous sheet is cut into a size approximately the same as the inner diameter of a guide jig, which will be described later, to obtain a porous printing material made of a thermoplastic resin. At this time, when an ultrasonic cutter is used, a porous printing material in which the cut surface is melted and solidified simultaneously with cutting can be obtained. The porous stamp is in a state where characters and the like are not yet formed.

Next, a document is prepared separately.
First, a composition is created on a computer or the like. Next, the original block is output and printed on a transparent polypropylene sheet to prepare an original sheet. In the original sheet, image portions such as characters or figures are formed with carbon toner, and the remaining portions remain transparent. Due to this difference, the magnitude of infrared transmittance is formed.
Next, after wrapping the original sheet with a slightly adhesive laminate film capable of transmitting infrared rays, the original sheet is cut into a size substantially the same as the inner diameter of the guide jig to prepare an original.

Next, an infrared exposure machine as shown in FIG. 1 is prepared separately. The infrared exposure machine 11 of the present embodiment is attached to the main body 15 so that the handle 12 provided with the curved hook portion 13 and the pressing plate 14 cooperate, and the main body 15 incorporates an infrared irradiation device such as a xenon lamp, A transparent plate 17 capable of transmitting infrared rays is attached to the upper surface of the main body 15. The infrared exposure machine 11 can obtain a clamping pressure by engaging the hook part 13 and the projection part 16 provided on the main body 15, and can freely change the degree of pressure depending on the amount by which the handle 12 is pushed down. It has become a thing.
Next, after a light amount adjusting plate 18 made of a polished glass-like acrylic plate is placed on the transparent plate 17 of the infrared exposure machine 11, a transparent silicone made of 1.0 mm thick is formed on the light amount adjusting plate 18. A rubber sheet 20 is placed, and an acrylic frame-shaped guide jig 1 is further placed.
Next, the original 2 is placed in the guide jig 1, and the porous stamp material 3 is placed in the guide jig 1 and stacked thereon. Next, a pressing jig 9 is placed on the porous stamping material 3 (see FIG. 2).
As described above, the rubber sheet 20, the document 2, and the porous stamp material 3 are laminated on the transparent plate 17 in this order.
Next, as shown in FIG. 3, the pressing plate 14 is put on and the porous printing material 3 and the document 2 are brought into close contact with each other, and then the handle 12 is pushed down while the hook portion 13 and the protruding portion 16 are engaged as shown in FIG. Then, a pressing force is applied between the pressing plate 14 and the transmission plate 17 so that the porous stamp 3 and the document 2 are completely brought into close contact with each other. If it does so, the porous stamping material 3 will be in the state slightly fitted in the rubber sheet 20, and will be pinched.
In this state, the infrared irradiation device 19 emits light, and infrared rays are irradiated from the transparent plate side as shown in FIG. Infrared rays that hit the image portion of the document 2 such as characters or figures are absorbed by the carbon of the portion and generate heat, but the heat decreases until reaching the porous stamping material 3 and until the porous stamping material 3 is melted. It does not lead to. On the other hand, the infrared light hitting the transparent portion of the blank portion passes through the original and directly hits the porous printing material 3, is absorbed by the carbon of that portion, generates heat, and melts the porous printing material 3. In this way, the surface of the porous printing material is formed on the non-porous protective coating and the ink oozing surface where ink cannot bleed out to form the printing surface.
According to the above method, the pressure to the peripheral edge of the porous stamping material 3 does not escape to the outside due to the clamping pressure, and a sufficient pressure can be received. Therefore, heat by infrared rays is completely delivered to the peripheral portion, and a complete marking surface can always be formed.
Thereafter, a stamp can be created by assembling a porous stamping material to a stamp holder and a fixing frame separately prepared.

A mixture of 100 parts by weight of a polyethylene resin having a melting point of 70 ° C., 20 parts by weight of polyethylene glycol having a molecular weight of 400, and 350 parts by weight of sodium chloride having a particle size of 10 to 60 μm is kneaded with a slight amount of carbon black. A sheet-shaped original member is created.
Next, the original member is immersed in warm water to completely remove polyethylene glycol and sodium chloride, and then sufficiently dried to obtain a grayish porous sheet having a thickness of 2.0 mm.
Next, the porous sheet is cut with a cutter into a size that can be accommodated in a stamp holder, which will be described later, to obtain a porous printing material made of a thermoplastic resin. At this time, when an ultrasonic cutter is used, the cut surface is melted and solidified simultaneously with the cutting.
Next, a stamp holder made of polyethylene having a melting point of 70 ° C. and formed with a joint portion on the upper side and a frame for accommodating the porous stamping material on the lower side is prepared, and the porous stamping material is accommodated in a state protruding from the frame. . A lattice-like bottom raising member having an ink occlusion body and an ink passage hole is also accommodated on the back surface of the porous marking material. The outer diameter of the stamp holder is set to be approximately the same as the inner diameter of a guide jig described later.
Next, a polyethylene terephthalate film is placed on the surface side of the porous stamp as a protective film. Next, a heat sealing jig having a sufficient size capable of simultaneously melting the entire circumference of both the porous printing material and the frame is prepared, heated to about 100 ° C., and then pressed against the porous printing material and the frame. .
When pressing is started, the peripheral edge of the porous stamp material is first melted, and then the lower end of the frame is melted. If it is detached after about 3 seconds while being pressed, it is fusion-bonded over the entire circumference in a shape in which the porous stamp and the frame overlap.
Next, the protective film is removed, and a unit in which the porous stamp material is accommodated and fixed in the stamp holder is obtained. The unit is in a state where characters and the like are not yet formed.

Next, a document is prepared separately.
First, a composition is created on a computer or the like. Next, the original block is output and printed on a transparent polypropylene sheet to prepare an original sheet. In the original sheet, image portions such as characters or figures are formed with carbon toner, and the remaining portions remain transparent. Due to this difference, the magnitude of infrared transmittance is formed.
Next, after wrapping the original sheet with a slightly adhesive laminate film capable of transmitting infrared rays, the original sheet is cut into a size substantially the same as the inner diameter of the guide jig to prepare an original.

Next, an infrared exposure machine 11 as shown in FIG. 1 is prepared separately.
After a light amount adjusting plate 18 made of a polished glass-like acrylic plate is placed on the transparent plate 17 of the infrared exposure machine 11, a transparent silicone rubber sheet 20 having a thickness of 1.0 mm is placed on the light amount adjusting plate 18. Further, an acrylic frame-shaped guide jig 1 is placed.
Next, the document 2 is stored in the guide jig 1, and the unit 5 is stored in the guide jig 1 and stacked thereon. Next, the holding jig 9 is placed on the unit 5 (see FIG. 6).
As described above, the rubber sheet 20, the document 2, and the porous stamp material 3 are laminated on the transparent plate 17 in this order.
Next, after covering the pressing plate 14 of the infrared exposure machine 11 to bring the porous printing material 3 and the document 2 into close contact with each other, the handle 12 is pushed down while the hook part 13 and the protrusion 16 of the infrared exposure machine 11 are engaged. Then, a pressing force is applied between the pressing plate 14 and the transmission plate 17 so that the porous stamp 3 and the document 2 are completely brought into close contact with each other. If it does so, the porous stamping material 3 will be in the state slightly fitted in the rubber sheet 20, and will be pinched.
In this state, the infrared irradiation device 19 emits light, and infrared rays are irradiated from the transparent plate side as shown in FIG. Infrared rays that hit the image portion of the document 2 such as characters or figures are absorbed by the carbon of the portion and generate heat, but the heat decreases until reaching the porous stamping material 3 and until the porous stamping material 3 is melted. It does not lead to. On the other hand, the infrared light hitting the transparent portion of the blank portion passes through the original and directly hits the porous printing material 3, is absorbed by the carbon of that portion, generates heat, and melts the porous printing material 3. In this way, the surface of the porous printing material is formed on the non-porous protective coating and the ink oozing surface where ink cannot bleed out to form the printing surface.
According to the above method, the pressure to the peripheral edge of the porous stamping material 3 does not escape to the outside due to the clamping pressure, and a sufficient pressure can be received. Therefore, heat by infrared rays is completely delivered to the peripheral portion, and a complete marking surface can always be formed.
Thereafter, the stamp can be created as shown in FIG. 8 by assembling the unit to a separately prepared grip member 6 or the like.

Perspective view of exposure machine Explanatory drawing of Example 1 Exposure machine covered with a pressure plate Exposure machine during clamping Exposure state diagram of Example 1 Explanatory drawing of Example 2. Exposure state diagram of Example 2 Example 2 stamp

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide jig 2 Original 3 Porous printing material 4 Stamp holder 5 Unit 6 Grip member 9 Holding jig 11 Infrared exposure machine 12 Handle 13 Hook part 14 Press plate 15 Main body 16 Protrusion part 17 Transparent board 18 Light quantity adjustment board 19 Infrared irradiation Device 20 Rubber sheet

Claims (2)

Using an infrared exposure machine including a main body with a built-in infrared irradiation device and a transparent plate that can transmit infrared rays on the upper surface, and a pressing plate that can be pressed from above the main body toward the transparent plate , rubber sheet having a resilient transparent or translucent on the transparent plate, a document, a laminated state put in order of the thermoplastic resin porous stamp material does not form a seal face, and the rubber sheet and the document the The porous stamping material is irradiated with infrared rays from the transparent plate side while being pressed from above with a pressing plate so that the porous stamping material comes into close contact with the rubber sheet through the original. A stamp stamping surface forming method for forming a stamping surface with a non-porous protective coating on which ink cannot bleed and a remaining portion where ink can bleed. 2. The stamp stamp face creation method according to claim 1, wherein the thermoplastic resin porous stamp is unitized by accommodating and fixing the stamp in a stamp holder.

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