JPH0480458B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Purpose of the Invention [Field of Industrial Application] This invention relates to an optical recording card and a method for manufacturing an optical recording card, and particularly relates to a writable (DRAW type) optical card and a method for manufacturing the same. It is.

In recent years, cards on which various types of information are recorded have become popular, such as ID cards, cash cards, and bank cards.

[Prior Art] It is necessary to record various information such as personal data and issuing company data on this type of card, and in the initial stage, such information is recorded in visible characters and symbols. In the later stages, electrical signals using magnetism are used to record information, but it is necessary to prevent tampering and cope with the increase in the amount of information.

To this end, optical recording cards using laser technology have recently been developed. This optical recording card is equipped with an information recording medium having an optical reflective surface. As an information recording medium, it is read-only.
In addition to ROM type, recently it is also possible to write
A DRAW type is also desired.

The conventional DRAW type optical recording card 101 is the fifth
As shown in the figure, a reflective silver salt pattern layer 108 is formed on a card front base material 102, a non-reflective layer 107 is formed below it, and a card back base material 103 is further bonded below it. has been done. A surface hardening layer 106 is formed on the surface of the card face base material 102,
A protective layer 105 is formed on the surface of the card back base material 103.

The writing laser beam is introduced from the side of the surface hardening layer 106, melts the silver salt pattern layer 108, forms pits 111 where the non-reflective layer 107 is exposed, and records information. By increasing the intensity of the light reflected from the salt pattern layer 108, data "0" or "1" is determined and information is read out.

[Problems to be Solved by the Invention] However, in the optical recording card configured as described above, the silver salt pattern layer used therein is expensive, highly toxic, and has poor productivity.

On the other hand, as a manufacturing technology for optical cards, it is possible to create a card by sandwiching a separately prepared optical recording member between the card front base material and the card back base material.
In this case, the thickness of the card becomes non-uniform, and highly accurate mechanisms such as readers and writers are required, which is extremely difficult to realize.

This invention was made in view of the above circumstances, and aims to provide an optical recording card that allows data to be written, is easy to manufacture, and is inexpensive, and a method for manufacturing the optical recording card. It is something.

(B) Structure of the Invention [Means for Solving the Problem] In response to this objective, the method for manufacturing an optical recording card of the present invention provides a method for producing an optical recording card in which a bonded card face base material and a card face base material are A method for producing an optical recording card having an optical recording member clamped therebetween, the method comprising: applying a colored organic material to an optical recording member forming area on one surface of a transparent card front base material using a dye soluble in an organic solvent; forming a layer, then forming a layer of water-soluble transparent imaging material on the layer of colored organic material, and then patterning the layer of transparent imaging material leaving a portion corresponding to the optical recording member forming area. A transparent image forming material layer is formed, then a colored organic material layer is dissolved using the transparent image forming material layer as a mask to form a colored organic material layer, and then the transparent image forming material layer and the colored organic material layer are combined. It is characterized by adhering the card back material to the card front material in a covering state.

Hereinafter, details of these inventions will be explained with reference to the drawings showing one embodiment.

In FIGS. 1 and 2, 1 is an optical recording card. The thickness of the optical recording card 1 is approximately 0.76 mm. The optical recording card 1 has an optical recording section 2. The optical recording card 1 has an optical recording member 7 formed in the optical recording forming area 5 on the inner surface of the card front base material 3, and furthermore, the card back base material 4 is attached with an adhesive 13 so as to cover the optical recording member 7. It is made by pasting it on.

The card back base material 4 guarantees the strength of the optical recording card 1, and the card back base material 4 is made of a synthetic resin plate such as glass, acrylic, epoxy, polyester, vinyl chloride, polysulfon, polyether sulfon, etc. can be used.

The card face base material 3 has a thickness of about 0.4 mm and is made of a material with good light transmittance such as transparent resin such as glass, polycarbonate, acrylic, epoxy, polyester, vinyl chloride, polysulfon, polyethersulfon, etc. Optical recording forming area 6
The optical recording forming area 5 corresponding to the area 5 is made transparent.

The optical recording member 7 is constructed by laminating a colored organic material layer 11 and a transparent image forming material layer 12.
A layer of colored organic material 11 is formed on the card face substrate 3 by approx.
It is formed with a thickness of 500 Å. Examples of materials constituting the colored organic material layer 11 include NK2014 or NK125 (both manufactured by Japan Photosensitive Color Research Institute), and 1R.
-820 (manufactured by Nippon Kayaku), etc., dissolved in a 1:1 mixture of anone and dichloromethane in an amount of 1% by weight can be used.

The transparent image forming material layer 12 is the colored organic material layer 11
It is formed with a thickness of about 0.4μ on top of the . Examples of transparent image forming materials include G-90 (manufactured by Tokyo Ohka Co., Ltd.)
, gelatin, PVA, etc. can be used. Note that a plurality of the optical recording members 7 described above may be formed in a stacked manner. A preformat can also be added to the optical recording member 7 by dyeing.

[Configuration of Manufacturing Method] Next, a manufacturing method for manufacturing the above optical recording card will be described with reference to FIG.

First, the colored organic material 11a is applied onto the card face base material 3 by spin coating or the like. As the colored organic material 11a, NK2014 or NK125 (manufactured by Japan Photosensitive Color Research Institute) or IR-820 (manufactured by Nippon Kayaku) was added to a mixture of anone and dichloromethane at a mixing ratio of 1:1.
A solution of % by weight is used and dried after application.
The thickness after drying is approximately 500 Å (Figure 3a).

Next, a transparent image forming material 12a is spin-coated on the colored organic material 11a (FIG. 3b).The transparent image forming material 12a is G-90 (manufactured by Tokyo Ohka Co., Ltd.).
can be used. Allow to dry after application. The film thickness after drying is approximately 0.4μ.

Next, by patterning the transparent image forming material 12
Only the portion of a corresponding to the optical recording forming area 6 is left and the other portions are removed. This forms a layer of transparent imaging material 12 (FIG. 3c).

Next, using the transparent image forming material layer 12 as a mask, the colored organic material 11a is dissolved to form the colored organic material layer 11.
form.

In this way, the optical recording member 7 is completed (FIG. 3d).

Next, an adhesive 13 is applied from above this optical recording member 7 (FIG. 3e), and a card back base material 4 is attached (FIG. 3f).

Finally, the optical recording card 1 is completed by cutting it into a specified card shape (Fig. 3g).

[Operation] When writing optical information on the optical recording card 1 configured as described above, as shown in FIG. incident on . As a result, the material in the portion of the colored organic material layer 11 where the laser beam is incident is dissolved and diffused into the transparent image forming material layer 12, thereby forming pits 10 in which the colored organic material layer 11 does not exist. Ru. Reading of the pits 10 is performed based on the presence or absence or intensity of reflected light corresponding to the presence or absence of the colored organic material layer 11.

(C) Effects of the Invention As described above, in the optical recording card of the present invention, the optical recording layer is formed by the colored organic material layer and the transparent image forming material layer, both of which are inexpensive and whose formation technology has been established. , the optical card itself is easy to manufacture;
And it can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective explanatory diagram showing an optical recording card according to an embodiment of the present invention, FIG. 2 is a cross-sectional explanatory diagram of the optical recording card, and FIG. FIG. 4 is an explanatory cross-sectional view showing a state in which writing is performed on an optical recording card, and FIG. 5 is an explanatory cross-sectional view showing a conventional optical recording card. 1... Optical recording card, 2... Optical recording section, 3...
Card front base material, 4... Card back base material, 5... Optical recording forming area, 6... Optical recording forming area, 7... Optical recording member, 11... Colored organic material layer, 12... Transparent image formation Material layer, 13...Adhesive.

Claims (1)

[Claims] 1. A method for producing an optical recording card comprising an optical recording member sandwiched between a card front base material and a card back base material that are adhered, the method comprising optical recording on one surface of a transparent card front base material. A layer of a colored organic material is formed in the member forming area using a dye soluble in an organic solvent, then a layer of a water-soluble transparent image forming material is formed on the layer of the colored organic material, and then patterned. A transparent image forming material layer is formed by leaving a portion of the transparent image forming material layer corresponding to the optical recording member forming area, and then the colored organic material layer is dissolved using the transparent image forming material layer as a mask. an optical recording card, characterized in that a colored organic material layer is formed thereon, and then the card back substrate is adhered to the card front substrate in a state covering the transparent image forming material layer and the colored organic material layer. manufacturing method.