JP7041566B2 - Information recording medium and its manufacturing method - Google Patents

Description

The present invention relates to an information recording medium in which information in a relief form is formed on the medium and a method for manufacturing the same.

In recent years, for example, credit cards, in which card information (owner information) is formed in a relief form by so-called embossing, have become widespread, and the card itself can be entered by inputting the card information of these cards via the Internet or the like. While it is possible to use the card without owning it, it is necessary to prevent information leakage as much as possible because the card information is easily leaked because it is passed to a person other than the owner when using it in a store.

Conventionally, various card configurations such as a credit card in which card information is embossed are known. For example, in Patent Document 1, a card substrate is provided with a front protective sheet on the entire surface of the sheet via a colored layer formed in an embossed region on the front surface of the core sheet, and a back protective sheet is provided on the back surface. It is known as a configuration in which a front pattern printing layer is formed on a front protection sheet and embossed to form card information, and an embossed character portion colored layer is formed on the upper surface of the embossed embossed surface. ing.

On the other hand, as a technique for reading card information for a card in which the above-mentioned card information is at least embossed, for example, the technique described in Patent Document 2 is known. Patent Document 2 includes a pressure sensor in which sensor cells are arranged in a predetermined area for an information recording medium in which card information is embossed together with magnetic information, and while reading magnetic information with a magnetic head, the card is used as a pressure sensor. It is described that the card information by embossing is read by detecting the pressed and embossed part.

Japanese Patent No. 5141260 Japanese Patent No. 4729169

However, when a card with embossed card information as described above is used by handing it to another person when using a card such as a credit card, the card information of the embossed portion is easily visible, which is the reason. There is a problem that there is a possibility that information may be leaked because the information is easy to read even for a moment.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an information recording medium and a method for manufacturing the same, in which the embossed information is in a form that is difficult to read visually and the risk of information leakage is reduced.

In order to solve the above problem, in the invention of claim 1 , a color-developing layer in which the layer itself develops color is provided on one surface of the resin base material, and the resin base material is deformed from the other surface toward the color-developing layer side. In this state, the first information unit in relief form is formed on the resin base material and the color-developing layer, and the color-developing layer at the position overlapped with the first information unit is colored to form the second information unit. A second color-developing layer in which the layer itself develops color is provided on the other surface of the resin base material, and the second color-developing layer at a position overlapped with the first information recess generated in the formation of the first information portion is colored. It is configured to have a formed third information unit.

The second aspect of the present invention is a method for manufacturing an information recording medium in which information having different forms is formed on the same surface, wherein a color-developing layer in which the layer itself develops color is provided on one surface of a resin base material. A step of embossing the resin base material and the color-developing layer from the other surface of the resin base material to form a first information portion in an embossed form, and irradiation of the color-developing layer at a position superimposed on the first information portion with laser light. The process of forming the second information section by coloring the second information section and the third information by irradiating the second color-developing layer at the position overlapped with the first information recess generated in the formation of the first information section with laser light. The configuration includes a step of forming a portion.

According to the first aspect of the present invention, a color-developing layer in which the layer itself develops color is provided on one surface of the resin substrate, and the resin group is deformed from the other surface of the resin substrate toward the color-developing layer. The first information part in relief form is formed on the material and the color-developing layer, and the color-developing layer at the position overlapped with the first information part is colored to form the second information part, and the second information part is formed on the other surface of the resin base material. A second color-developing layer in which the layer itself develops color is provided, and the second color-developing layer is developed at a position overlapped with the first information recess generated in the formation of the first information portion to form the third information portion. By doing so, the first information unit can be made into a form that is difficult to read visually from the first information recess that has a character identification relationship with the first information unit, and the risk of information leakage during use can be reduced. It can be done.

According to the second aspect of the present invention, a color-developing layer in which the layer itself develops color is provided on one surface of the resin substrate, and the resin substrate and the color-developing layer are embossed from the other surface of the resin substrate to form a relief. The first information part is formed, and the color-developing layer at the position overlapped with the first information part is colored by laser light irradiation to form the second information part, and the layer itself develops color on the other surface of the resin base material. A second color-developing layer is provided, and the second color-developing layer is colored at a position overlapped with the first information recess generated in the formation of the first information portion to form the third information portion. The laser beam can be easily positioned on the position of the first information recess having a character identification relationship with the information unit, and the third information unit can be easily formed by superimposing the laser light on the first information recess.

It is a block diagram of the 1st Embodiment of the information recording medium which concerns on this invention. It is a process diagram of the manufacturing method of the information recording medium of FIG. It is a block diagram of the 2nd Embodiment of the information recording medium which concerns on this invention. It is a block diagram of the 3rd Embodiment of the information recording medium which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The cross-sectional view shown in the figure ignores the dimensions for easy understanding.
FIG. 1 shows a configuration diagram of a first embodiment of the information recording medium according to the present invention. In FIGS. 1A to 1C, the information recording medium 11 is provided with a coloring layer 13 on which the layer itself develops color on one surface of the resin base material 12, and is used as the other side surface (back surface) of the resin base material 12. ) The first information unit 21 in relief form is formed on the resin base material 12 and the color-developing layer 13 in a state of being deformed from 12A toward the color-developing layer side. As shown in FIG. 1B, the first information unit 21 is formed on the back surface 12A of the resin base material 12 in the form of a character. Further, the second information unit 22 is formed by developing the color of the color-developing layer 13 at the position overlapped with the first information unit 21.

The resin base material 12 contains a resin having a concealing property as a main component, and has a thickness of, for example, 560 μm, and for example, polyvinyl chloride (PVC), polyethylene terephthalate glycol (PET-G), polycarbonate (PC), or the like is used.

The color-developing layer 13 is formed, for example, having a thickness of 50 μm or more (for example, 50 μm to 100 μm), and for example, polyvinyl chloride (PVC), polyethylene terephthalate glycol (PET-G), polycarbonate (PC), or the like is used. Specifically, CG030M manufactured by Taihei Chemicals Limited using PET-G is used. The same type as the resin base material 12 is preferable.

Therefore, FIG. 2 shows a process diagram of the method for manufacturing the information recording medium of FIG. In FIG. 2A, the color-developing layer 13 is formed by coating on the entire surface of one surface of the resin base material 12. Subsequently, as shown in FIG. 2B, the resin base material 12 and the resin base material 12 and the resin base material 12 are deformed by embossing the resin base material 12 at a predetermined position from the other surface (back surface 12A) toward the color developing layer 13. The first information unit 21 in relief form is formed on the color-developing layer 13. For example, it is formed as numerical information as shown in FIG. 1 (A).

Subsequently, as shown in FIG. 2C, it is desired that the laser light 32 is formed from the laser irradiation unit 31 to form the second information unit 22 with respect to the color-developing layer 13 portion at the position overlapped with the first information unit 21. The second information unit 22 in the form of irradiating based on the variable information and coloring the layer itself in the irradiated portion as shown in FIG. 2 (D) is, for example, the first information unit as shown in FIG. 1 (A). It is formed as information with a number different from 21.

The laser irradiation unit 31 irradiates a YVO4 (neodymium) laser beam 32 having a basic wavelength of 1,064 nm, and is a second information unit depending on the setting conditions of an output of 7.8 W, a scan speed of 3,000 mm / sec, and a repetition frequency of 75 Hz. 22 is formed. That is, the second information unit 22 is formed in a form in which the layer itself is colored black.

In forming the second information unit 22, the type of laser light may be set according to the material of the color-developing layer 13, not limited to the YVO4 laser light.

As described above, when the information recording medium 11 tries to visually read the first information unit 21 in the relief form, the second information unit 22 in the color-developed state is impressed and the first information unit 21 is visually read. It can be made into a difficult form and can reduce the risk of information leakage during use. In particular, if the first information unit 21 is a number character, the second information unit 22 can be given the same character type as the same number character (a number arrangement different from that of the first information unit 21) to enhance the impression.

Further, in manufacturing such an information recording medium 11, the laser beam 32 can be easily positioned on the color-developing layer 13 on the position of the first information unit 21, and the laser beam 32 can be easily positioned on the first information unit 21 in the relief form. 2 The information unit 22 can be easily formed.

Next, FIG. 3 shows a block diagram of a second embodiment of the information recording medium according to the present invention. As shown in FIG. 3C, the information recording medium 11 shown in FIGS. 3A to 3C has a second color-developing layer 13A in which the layer itself develops color on the other surface (back surface 12A) of the resin base material 12. Is provided, and when the first information unit 21 is formed, it is embossed from the second color-developing layer 13A side to form a relief on the color-developing layer 13 side.

In this case, as shown in FIG. 3B, on the second color layer 13A side, the first information recess 21A generated by the formation of the first information unit 21 is formed in a character-typing relationship with the first information unit 21. It will be. Then, the second information layer 13A at the position overlapped with the formed first information recess 21A is irradiated with the laser beam 32 as shown in FIG. 2 to develop a color, whereby the third information unit 23 is formed. It is a thing.

That is, since the first information unit 21 can be visually read even if it is the first information recess 21A having a character identification relationship, the third information unit 23 is formed in the portion of the first information recess 21A. It is possible to make it difficult for the first information unit 21 to be recognized from the first information recess 21A, and it is possible to reduce the risk of information leakage during use. The third information unit 23 may have the same information (numerical arrangement) as the second information unit 22.

Next, FIG. 4 shows a block diagram of a third embodiment of the information recording medium according to the present invention. In the information recording medium 11 shown in FIGS. 4 (A) and 4 (B), the first information unit 21 in the relief form is formed, and the second information unit 21 is placed on the color-developing layer 13 at a position superimposed on the first information unit 21. Forming the information unit 22 is the same as described above. Here, display information 23 such as characters and figures is displayed in an area other than the area where the first information unit 21 (second information unit 22) is formed. It is a formed form.

That is, the display information 23 can be formed by irradiating the coloring layer 13 in the region other than the second information unit 22 with the laser beam 32, and the display information 23 can be formed in the same process as the formation of the second information unit 22. It can be formed. This can also be applied to the second embodiment of FIG. 3 above.

The information recording medium of the present invention and a method for manufacturing the same can be used in industries such as manufacturing, selling, and using cards such as credit cards and cash cards.

11 Information recording medium 12 Resin base material 12A Resin base material back surface 13 Color development layer 13A Second color development layer 21 First information unit 21A First information recess 22 Second information unit 23 Third information unit 31 Laser irradiation unit 32 Laser light

Claims (2)

An information recording medium in which information having different forms of formation is formed on the same surface.
A color-developing layer in which the layer itself develops color is provided on one surface of the resin substrate, and a relief formed on the resin substrate and the color-developing layer in a state of being deformed from the other surface of the resin substrate toward the color-developing layer. The first information part of the form and
A second information unit formed by coloring the color-developing layer at a position superimposed on the first information unit, and a second information unit.
A second color-developing layer in which the layer itself develops color is provided on the other surface of the resin base material, and the second color-developing layer at a position overlapped with the first information recess generated in the formation of the first information portion is colored. And the third information unit formed by
An information recording medium characterized by having . A method for manufacturing an information recording medium in which information having different forms of formation is formed on the same surface.
A step in which a color-developing layer in which the layer itself develops color is provided on one surface of the resin base material, and the resin base material and the color-developing layer are embossed from the other surface of the resin base material to form a first information portion in a relief form. When,
A step of forming a second information unit by developing a color by irradiating the color-developing layer at a position overlapped with the first information unit by laser light irradiation.
A second color-developing layer in which the layer itself develops color is provided on the other surface of the resin substrate, and laser light is applied to the second color-developing layer at a position overlapped with the first information recess generated in the formation of the first information unit. The process of forming the third information part by developing color by irradiation , and
A method for manufacturing an information recording medium, which comprises.

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