JP3885277B2 - Stamp making machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stamp printing plate manufacturing apparatus for manufacturing a stamp printing plate from a stamp base material having a continuous sheet and having a porous sheet that can be impregnated with stamp ink.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various printing apparatuses such as stamps have been used to print a desired print image such as a picture or a character on a print medium such as paper. Of these, JP-A-8-118771 and JP-A-8-207409 disclose a stamp printing plate composed of a porous sheet having open cells and capable of being impregnated with stamp ink. As shown in FIG. 8A, a stamp stamping surface 101 is formed on the upper surface of the stamp stamping plate 100. The stamp stamping surface 101 has an ink exudation portion 101a that becomes a mirror image of a desired imprinted document and continuous bubbles. And an ink non-exuding portion 101b which is melted and solidified to be closed.
[0003]
According to this stamp printing plate 100, the stamp printing plate 100 is pre-impregnated with stamp ink, and the stamp printing surface 101 is pressed against the printing medium 105 such as paper, whereby the stamp printing plate 101 is pressed from the ink extruding portion 101a of the stamp printing surface 101. The stamp ink impregnated in 100 exudes. Due to the bleeding of the stamp ink, the print image 106 is printed on the print medium 105. Therefore, the stamp printing plate 100 can be used without attaching or applying the stamp ink to the stamp printing surface 101 each time a stamp is made.
[0004]
[Problems to be solved by the invention]
However, since the side surface portion 102 of the stamp printing plate 100 is not melted and solidified and the open cells are not blocked, the open cells are exposed on the surface of the side surface portion 102 so that the stamp ink can be exuded. For this reason, as shown in FIG. 8B, when the stamp printing plate 100 impregnated with the stamp ink is printed on the printing medium 105, the periphery of the print image 106 is exuded from the side surface portion 102 of the stamp printing plate 100. The exuded ink 107 adheres, and there is a problem that a good print image cannot be printed.
[0005]
The present invention has been made to solve the above-described problems, and provides a stamp printing plate manufacturing apparatus capable of manufacturing a stamp printing plate that prevents bleeding of the stamp ink from around the printed image. It is intended to provide.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the stamp printing plate manufacturing apparatus according to claim 1 includes a support member for supporting a stamp base material composed of a porous sheet having open cells that can be impregnated with stamp ink, and the support member. A compression member that presses and compresses the stamp base material to the side, and a heating unit that heats the surface of the stamp base material compressed between the compression member and the support member in accordance with an image pattern. An ink non-bleeding portion that does not bleed out of the stamp ink formed by melting and solidifying the surface of the stamp base material by the heating means, and an ink that can be leached out of the stamp ink on the surface of the stamp base material A stamp printing plate having an exudation part is manufactured, and at least one of the support member and the compression member has a compression amount at an edge portion of the stamp base material that is not in the stamp base material. Comprising a compression amount increasing unit to be larger than the amount of compression in the portion, wherein the heating means, at the time of the heating of the stamp substrate, heating the surface of the edge portion of said stamp substrate corresponding to the compression amount increasing portion Thus, the edge portion of the stamp base material is used as a non-inking portion .
[0007]
According to the stamp printing plate manufacturing apparatus of the first aspect, when the stamp base material is compressed between the support member and the compression member, the open cells adjacent in the thickness direction of the stamp base material are crushed. The stamp base material is deformed so that the open cells are in close contact with each other. When the surface of the stamp base material is heated by a heating means, adjacent open cells on the surface are closed while being melted and solidified corresponding to the image pattern, thereby forming an ink non-exuded portion. On the other hand, an ink bleed portion in which open cells are exposed is formed on the surface of the stamp base material that is not heated by the heating means corresponding to the image pattern, and as a result, a stamp printing plate is manufactured. The edge portion of the stamp base material is heated while being compressed with a compression amount larger than the compression amount in the non-edge portion of the stamp base material by the compression amount increasing portion provided in at least one of the support member and the compression member. Since it is heated by the means, an ink non-exuded portion in which open cells are melted and solidified and closed is formed at the edge portion of the stamp base material.
[0008]
3. The stamp printing plate manufacturing apparatus according to claim 2, wherein the compression amount increasing portion is an edge of the stamp base material among at least one of the support member and the compression member. A portion corresponding to the portion is formed in a convex shape.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1A is a top view of a stamp unit 1 which is an embodiment of a stamp printing plate manufacturing apparatus of the present invention, and FIG. 1B is a side sectional view of FIG. FIG. 2 is a perspective view of the tray 2 with the transparent movable lid 22 opened. FIG. 3 is a perspective view of the tray 2 with the transparent movable lid 22 closed and the unit main body 3 from which the tray 2 has been taken out.
[0010]
The stamp unit 1 includes a tray 2 on which an original sheet 11, a stamp base 12 and a transparent PET sheet 13 (hereinafter referred to as “stamp base 12 etc.”), which will be described later, are installed, and the tray 2 therein. And a unit body 3 that can be housed to produce a stamp plate 14 to be described later.
[0011]
As shown in FIG. 2, the tray 2 includes a tray body 21, a transparent movable lid 22, and an engagement member 23. A concave portion 24 having a substantially rectangular shape in plan view is formed in a substantially central portion of the tray body 21, and a stamp base material 12 and the like described later are installed in the concave portion 24 (see FIG. 4). A transparent movable lid 22 is pivotally attached to one side of the tray body 21 via a pivot pin 27 so that the transparent movable lid 22 in a closed state is engaged with the tray body 21 on the other side. The engaging member 23 is rotatably arranged via a pivot pin 28 (see FIG. 1B).
[0012]
The transparent movable lid 22 is made of translucent transparent acrylic resin or the like, and a lower surface of the transparent movable lid 22 is laminated with a stamp substrate 12 or the like to be described later and pressed against the bottom surface of the recess 24. The pressing portion 25 is integrally formed, and an engaging portion 26 for engaging and disengaging with the engaging member 23 is integrally formed on the free end side of the transparent movable lid 22. Therefore, the stamp substrate 12 and the like are irradiated with light from the flash bulb 6 that has passed through the transparent movable cover 22 while compressing the stamp substrate 12 and the like between the bottom surface of the recess 24 and the lower surface 25a of the pressing portion 25. (See FIG. 1B and FIG. 4B).
[0013]
Further, a convex portion 30 protrudes from a portion of the lower surface 25a of the pressing portion 25 facing the edge portion e of the stamp substrate 12, and a predetermined amount is provided between the lower surface 25a and the end of the convex portion 30. A step is formed. Therefore, when compressing the stamp substrate 12 or the like between the bottom surface of the recess 24 and the lower surface 25a of the pressing portion 25, the compression amount of the edge portion e of the stamp substrate 12 that contacts the convex portion 30 of the pressing portion 25. Can be made larger than the compression amount of the non-edge portion f of the stamp substrate 12 with which the convex portion 30 is not in contact, and the stamp substrate 12 and the like can be compressed (see FIG. 4B).
[0014]
As shown in FIGS. 1A and 1B, the unit main body 3 is composed of a case 4 having a hollow box-like body. An insertion port 4a is formed below the left side wall of the case 4 (left side in FIG. 1B), and the tray 2 can be stored and taken out from the insertion port 4a into the unit body 3. The case 4 has a rectangular trapezoidal recess 5 formed in a substantially rectangular shape in plan view (see FIG. 3), and the surface of each side wall of the recess 5 has light reflection characteristics such as aluminum foil. An excellent sheet (not shown) is attached. A flush valve 6 is detachably disposed on one side wall 5 a of the recess 5, and a contact member 7 is disposed on the right end portion of the flush valve 6.
[0015]
The contact member 7 is connected to a dry battery 8 as a power source for flashing the flash bulb 6. Further, a switch device 9 is disposed near one inner wall of the case 4, the tray 2 inserted from the insertion port 4 a is stored inside the unit body 3, and the pressing portion 25 of the tray 2 is connected to the recess 5. When the opposite position is reached, the switch device 9 is activated and turned on. When the switch device 9 is turned on by the insertion of the tray 2, power is supplied from the dry battery 8 to the flash valve 6, and the flash valve 6 can be flashed.
[0016]
Next, each base material used for the manufacturing method of the stamp printing plate 14 using this stamp unit 1 and the manufacturing method of the stamp printing plate 14 is demonstrated. 4A is a cross-sectional view of each base material such as the stamp base material 12 stacked in the concave portion 24 of the tray 2, and FIG. 4B is a cross-sectional view of each base material during light irradiation. 4C is a cross-sectional view of the stamp stamp 14. FIG. 5 is a perspective view of the stamp stamp 14.
[0017]
First, each base material used for the manufacturing method of the stamp printing plate 14 is demonstrated. As shown in FIG. 4A, the document sheet 11 includes a transparent sheet 11a as a base material and a photochromic layer 11b formed on the lower surface of the transparent sheet 11a. The transparent sheet 11a is made of a synthetic resin such as PET (polyethylene terephthalate), vinyl chloride, or ABS resin, and is formed into a transparent sheet having a substantially uniform thickness. Further, the transparent sheet 11a melts at a temperature higher than the melting point of the stamp base 12 described later (for example, about 120 ° C. for a soft polyurethane resin and about 70 ° C. for a soft polyolefin resin). It has properties. For example, since the melting point of the transparent sheet 11a made of PET is about 230 ° C., when the original sheet 11 and a stamp base 12 described later are laminated and heated, the stamp base 12 is heated and melted. Even so, the document sheet 11 does not melt.
[0018]
The photochromic layer 11b is a thin film formed on the surface of the transparent sheet 11a, and is formed in a substantially uniform thickness by impregnating or applying organic photochromic ink (made by Teikoku Ink) on the surface of the transparent sheet 11a. The photochromic layer 11b is usually colorless and transparent, and a non-translucent portion 11c that is colored blue is formed on a part of the photochromic layer 11b by laminating a negative film or the like and irradiating light including ultraviolet rays. FIG. 4 shows a state in which a positive image is formed on the surface of the document sheet 11. Further, by blocking the irradiation of ultraviolet rays to the photochromic layer 11b and leaving it for a predetermined time, the photochromic layer 11b changes to colorless and transparent, and returns to a state substantially the same as the photochromic layer 11b before the ultraviolet irradiation.
[0019]
Therefore, the original sheet 11 can be reused without being disposable. For example, the document sheet 11 that has been used once can be used again as a document sheet by leaving it for a predetermined period of time and then laminating another negative film or the like and irradiating it with rays containing ultraviolet rays. The original sheet 11 can be reused many times as long as the properties of the photochromic ink are not deteriorated.
[0020]
As shown in FIG. 5 (a), the stamp base 12 is made of a porous material that has open cells and can be impregnated with stamp ink, such as polyolefin resin, polyvinyl chloride resin, polyurethane resin, and the like. It is comprised by the foamed resin material of this. The stamp substrate 12 has flexibility (softness) and is formed in a sheet shape having a substantially uniform thickness of about 0.2 mm to about 0.8 mm.
[0021]
This stamp base material 12 contains carbon or the like in a dispersed manner, and when the surface side of the stamp base material 12 is heated, the surface melts and the pores exposed are closed. Yes. Therefore, when the surface side is pressed to compress the stamp substrate 12 and the surface is heated and solidified, the portion becomes the non-ink-exuded portion 12b, and the portion not melted has the pores on the surface. The ink exuding portion 12a exposed to the surface (see FIGS. 4C and 5).
[0022]
It should be noted that by changing the compression amount of the stamp substrate 12, the thickness (melted thickness) of the melted portion of the ink non-exuded portion 12b can be adjusted. For example, as shown in FIGS. 4A and 4C, by making the compression amount of the edge portion e of the stamp base material 12 larger than the compression amount of the non-edge portion f (see FIG. 4A). ) The melt thickness t1 of the ink non-exuded portion 12b formed on the edge portion E of the stamp printing plate 14 is larger than the melt thickness t2 of the ink non-exuded portion 12b formed on the non-edge portion F of the stamp printing plate 14. It is formed thick (see FIG. 4C).
[0023]
In this embodiment, the weight ratio of carbon or the like contained in the stamp substrate 12 is 1.0% by weight to 1.5% by weight with respect to the polyurethane-based foamed resin. In addition, the content rate of carbon is not limited to this, What is necessary is just the range of 0.1 weight%-15 weight%. If the carbon content is greater than 15% by weight, the stamp substrate 12 itself will be black, and it will not be possible to know the color of the applied stamp ink, and it will also be unclear whether the stamp ink has been applied. Because it ends up. On the other hand, if it is less than 0.1% by weight, sufficient heat generation cannot be obtained, and the surface of the stamp substrate 12 cannot be melted.
[0024]
The transparent PET sheet 13 has a property of melting at a temperature higher than the melting point of the stamp substrate 12 (for example, about 120 ° C. for a soft polyurethane resin and about 70 ° C. for a soft polyolefin resin). The melting point is about 230 ° C. Further, the thickness of the transparent PET sheet 13 is about 0.025 mm to about 0.2 mm. Therefore, when the transparent PET sheet 13 and the stamp base material 12 are laminated and heated, even if the stamp base material 12 is heated and melted, the transparent PET sheet 13 does not melt.
[0025]
Next, a method for manufacturing the stamp stamp 14 will be described. As shown in FIG. 3, the tray 2 is taken out from the unit body 3, the engagement state between the engagement member 23 and the engagement portion 26 of the transparent movable lid 22 is released, and the transparent movable lid 22 of the tray 2 is opened. (See FIG. 2). The stamp base 12 is placed in the recess 24 of the tray 2 with the transparent movable lid 22 opened, and the transparent PET sheet 13 is laminated in contact with the top surface of the stamp base 12. And the photochromic layer 11b of the original sheet 11 are laminated in contact with each other.
[0026]
Thereafter, the transparent movable lid 22 is closed, the engaging member 23 is engaged with the engaging portion 26, and the upper surface of the original sheet 11 is pressed by the pressing portion 25 of the transparent movable lid 22 to compress the stamp substrate 12. (Refer FIG. 3, FIG.4 (b)). When the stamp substrate 12 or the like is compressed between the bottom surface of the recess 24 and the lower surface 25a of the pressing portion 25, the open cells adjacent in the thickness direction of the stamp substrate 12 are crushed and the open cells are in close contact with each other. The stamp substrate 12 is deformed. At this time, since the edge portion e of the stamp base material 12 is pressed by the convex portion 30 of the pressing portion 25, a larger amount of compression than the non-edge portion f of the stamp base material 12 is applied and deformed (see FIG. 4 (b)). Subsequently, the tray 2 with the transparent movable lid 22 closed is inserted into the unit body 3 from the insertion port 4a. When the pressing portion 25 of the tray 2 is inserted to reach the position facing the recess 5 of the unit main body 3, the switch device 9 is activated to be turned on, and the flash valve 6 flashes by being supplied with power from the dry battery 8 as a power source. .
[0027]
As shown in FIG. 4B, when the flash bulb 6 flashes, the infrared ray R in the light component passes through the transparent movable lid 22 and the transparent sheet 11a of the document sheet 11, and is irradiated on the upper surface of the photochromic layer 11b. . At this time, the infrared ray R1 irradiated to the non-translucent portion 11c of the photochromic layer 11b is blocked by the non-translucent portion 11c, and the infrared ray R2 irradiated to the portion of the photochromic layer 11b other than the non-translucent portion 11c is It passes through the photochromic layer 11b and the transparent PET sheet 13.
[0028]
Thereby, in the stamp base material 12, the infrared ray R1 is not irradiated to the portion corresponding to the non-translucent portion 11c of the document sheet 11, so that carbon or the like in this portion does not generate heat. On the other hand, since the infrared ray R2 is irradiated to the portion corresponding to the portion other than the non-translucent portion 11c of the original sheet 11, the carbon or the like in this portion generates heat.
[0029]
As a result, on the upper surface of the stamp substrate 12, the portion corresponding to the non-translucent portion 11c of the photochromic layer 11b does not generate heat from carbon or the like, so that the ink bleed portion 12a with open cells is formed as it is. Is done. On the other hand, the portion corresponding to the portion other than the non-translucent portion 11c has its surface melted and solidified by heat generation of carbon or the like, and has a certain depth in the thickness direction from the surface of the stamp base 12. In the meantime, the continuous bubbles in the adjacent surface layer are melted and solidified to form the ink non-exuded portion 12b, and the stamp printing plate 14 is manufactured (see FIGS. 4C and 5).
[0030]
In addition, the compression amount of the edge portion e of the stamp base material 12 is increased by the convex portion 30 of the pressing portion 25 as compared with the compression amount of the non-edge portion f of the stamp base material 12, so that the stamp mark The melt thickness t1 at the edge portion E of the plate 14 is larger than the melt thickness t2 at the non-edge portion F of the stamp printing plate 14. Therefore, since the continuous bubbles in the side surface portion 12c of the stamp stamp plate 14 are simultaneously closed, it is possible to prevent the stamp ink from oozing out from the side surface portion 12c (see FIGS. 4C and 5).
[0031]
The non-translucent portion 11c is heated by the infrared ray R1 irradiated from the direction of the transparent movable lid 22, and the temperature rises to generate heat. However, the heat accumulated in the non-translucent portion 11c is transferred to the transparent PET sheet 13 and dissipated because the non-translucent portion 11c is in contact with the transparent PET sheet 13. Therefore, in the stamp substrate 12, the carbon or the like of the portion corresponding to the non-translucent portion 11c of the photochromic layer 11b does not generate heat, so that it is possible to form the ink exuding portion 12a with open cells as it is.
[0032]
Next, a second embodiment will be described with reference to FIGS. In the second embodiment, the position of the convex portion 30 provided on the tray 2 of the stamp unit 1 of the first embodiment described above is changed. In the following, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. FIG. 6 is a perspective view of the tray 2 with the transparent movable lid 22 opened, and FIG. 7A is a cross-sectional view of each base material such as the stamp base material 12 stacked on the concave portion 14 of the tray 2. FIG. 7 (b) is a cross-sectional view of each substrate laminated with light.
[0033]
As shown in FIG. 6, the convex portion 30 of the tray 2 is formed integrally with the concave portion 24 such that the edge portion of the bottom surface of the concave portion 24 in the tray body 21 protrudes upward (see FIG. 7B). Thus, the stamp substrate 12 and the like are laminated on the bottom surface of the concave portion 24 where the convex portion 30 is formed, the transparent movable lid 22 is closed, and the engaging member 23 is engaged with the engaging portion 26, so that the original sheet 11. By pressing the upper surface by the pressing portion 25 of the transparent movable lid 22, the compression amount of the edge portion e of the stamp base material 12 is made larger than the compression amount of the non-edge portion f of the stamp base material 12. (See FIG. 7B). Therefore, the melt thickness t1 at the edge portion E of the stamp printing plate 14 manufactured using the stamp substrate 12 can be formed larger than the melt thickness t2 at the non-edge portion F (see FIG. 4 (c), see FIG.
[0034]
The present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be easily made without departing from the spirit of the present invention. It can be guessed.
[0035]
For example, in this embodiment, the flash valve 6 is used as a heat source for melting the porous resin layer 12a of the stamp base 12. However, the type of heat source is not limited to this, and a light source such as a xenon tube or a heating element such as a thermal head whose infrared light component is included in the light component may be replaced with the flash bulb 6.
[0036]
In this embodiment, the original sheet 11 is a transparent sheet 11a on which a photochromic layer 11b is formed. However, as the document sheet, for example, a tracing document sheet on which an image is drawn with non-translucent ink having an arbitrary color of black, white, gold, or silver may be used. In other words, the original sheet may be any sheet in which an image is drawn by forming a non-translucent portion on a translucent paper or the like.
[0037]
In this embodiment, the stamp base 12 is made of a foamed resin such as a polyolefin resin, but a rubber-based material may be used. That is, the stamp base material may be a foam material that has flexibility when formed into a porous sheet.
[0038]
Furthermore, in this example, the stamp base material 12 was made to contain carbon or the like dispersed. However, the material to be included in the stamp base material may be, for example, a polymer material such as silver chloride or silver bromide or a light energy absorbing material. In other words, any substance that generates heat when heated by irradiation with light may be used.
[0039]
【The invention's effect】
According to the stamp printing plate manufacturing apparatus of the present invention, the edge portion of the stamp base material is heated by the heating means while being compressed at a compression amount larger than the compression amount at the non-edge portion of the stamp base material by the compression amount increasing portion. Therefore, it is possible to form an ink non-exuded portion in which the open cells are melted and solidified and closed at the edge portion of the stamp printing plate. Therefore, when the stamp printing plate is impregnated with stamp ink and pressed against a printing medium such as paper, the stamp ink can be prevented from exuding from the edge portion of the stamp printing plate.
[Brief description of the drawings]
1A is a top view of a stamp unit for producing a stamp printing plate using a stamp base material according to an embodiment of the present invention, and FIG. 1B is a side view of FIG. It is sectional drawing.
FIG. 2 is a perspective view of a tray with a transparent movable lid opened.
FIG. 3 is a perspective view of a tray in a state where a transparent movable lid is closed and a unit main body from which the tray is taken out.
4A is a cross-sectional view of each base material stacked in a recess of the tray, FIG. 4B is a cross-sectional view of each base material during light irradiation, and FIG. 4C is a plate making process. It is sectional drawing of the stamp stamp plate after.
FIG. 5 is a perspective view of a stamp printing plate.
FIG. 6 is a perspective view of a tray in a state where a transparent movable lid is opened in a second embodiment.
FIG. 7A is a cross-sectional view of each base material stacked in the concave portion of the tray in the second embodiment, and FIG. 7B is a cross-sectional view of each base material during light irradiation.
FIG. 8 is a perspective view of a stamp printing plate manufactured by a stamp printing plate manufacturing apparatus in the prior art, and FIG. 8B is a diagram showing an image printed using the stamp printing plate in FIG. is there.
[Explanation of symbols]
1 Stamp unit (stamp stamp production equipment)
2 Tray 3 Unit body 6 Flash valve (heating means)
12 Stamping Base Material 12a Ink Exuding Portion 12b Ink Non-Exuding Portion 14 Stamp Stamping Plate 21 Tray Main Body 24 Recess (Support Member)
25 Pressing part (compression member)
30 Convex (Compression increase part)
e, E Edge part f, F Non-edge part R, R1, R2 Infrared ray t1, t2 Melting thickness

Claims (2)

A support member for supporting a stamp base material composed of a porous sheet having open cells that can be impregnated with stamp ink;
A compression member that presses and compresses the stamp base material toward the support member;
Heating means for heating the surface of the base material for stamp compressed between the compression member and the support member in accordance with the image pattern;
An ink non-exuded portion that does not exude stamp ink formed by melting and solidifying the surface of the stamp base material by the heating means; In a stamp printing plate manufacturing apparatus for manufacturing a stamp printing plate with
At least one of the support member and the compression member includes a compression amount increasing portion that makes the compression amount in the edge portion of the stamp base material larger than the compression amount in the non-edge portion of the stamp base material ,
The heating means heats the surface of the edge portion of the stamp base material corresponding to the compression amount increasing portion at the time of heating the stamp base material, thereby removing the edge portion of the stamp base material from ink. An apparatus for producing a stamp printing plate, characterized in that it is an exudation part .   The said compression amount increase part is a part in which the part corresponding to the edge part of the said base material for stamps is formed in convex shape among at least one of the said supporting member and a compression member. Stamp stamp production equipment.

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