JPS6180631A - Optical read card and its manufacture - Google Patents

Abstract

PURPOSE:To form quickly uneveness of an optical reflecting face by adhering an optical read medium having a reflecting face recording information with the presence of an optical reflecting face and forming the presence of the optical reflecting face by the etching method onto a card substrate. CONSTITUTION:After a film 5a consisting of an optical reflecting member made of a material having a high reflectance to a read light is formed on the substrate 4, a resist 11 is subjected to spin coating on the film 5a. A mask 12 having a pattern of data pits and guide tracks are adhered closely on the resist 11, exposed to develop the resist 11, then the transfer of the pattern onto the resist 11 is finished to form the uneveness corresponding to the data pits and guide tracks onto the resist 11. The optical reflecting layer 5 is constituted by etching the film 5a from the resist 11 to complete the optical reading medium 3. An adhesives 8 is coated onto the resist 11 of the optical reading medium 3 and the optical reading medium 3 is adhered to one side of the card substrate 2 or, as required, both sides.

Description

[Detailed description of the invention] (b) Purpose of redundancy [Industrial application field 1 This invention relates to an optical reading card.

2. Description of the Related Art In recent years, cards with various information recorded thereon, such as ID cards, cash cards, and bank cards, have become popular.

. [Conventional technology 1] Various types of information such as personal data and issuing company data must be recorded on this type of card, and in the initial stage such information was recorded in visible characters and symbols. In addition, at the stage described below, electrical signals are recorded using Ga 14i, but it is necessary to prevent tampering and cope with the increasing number of information requests.

To this end, laser cards that utilize laser technology have recently been developed. The card is equipped with an information recording medium that has an optically reflective surface.The optically reflective surface has concavities and convexities that function as data bits and guide tracks, and the difference in optical reflection between the concave and convex portions causes the laser to emit light. The device is configured to detect data bits and guide tracks and read information.

However, conventionally, in order to form the unevenness of this optical reflective surface,
A pattern of data bits and guide tracks is formed by irradiating a resist or vapor-deposited metal film on a substrate with a laser beam, and this is plated with nickel to form a mask 11. From this mask, a mother and a standby are passed, and then a mold is formed. They were manufactured using transparent plastic materials such as polycarbonate or acrylic, and then reproduced by molding, etc., and coated with an aluminum reflective film on the printed surface. This process was extremely complicated, took a long time to make the molds, and was expensive, making it unsuitable for urgent production or for orders with a large number of small lofts.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned circumstances, and the present invention has been made in view of the above-mentioned circumstances.
It is an object of the present invention to provide an optically readable card and a method for manufacturing the same, which can rapidly form unevenness on an optically reflective surface, which can be mass-produced, and which is inexpensive.

(0) Structure of the invention [Means for solving the problem M] Corresponding to this purpose, the optical reading card of the present invention has the following features:
An optical reading medium having a reflective surface on which information is recorded depending on the presence or absence of an optical reflective surface, and the presence or absence of the optical reflective surface is formed by an etching method, is adhered onto a card R body. There is.

□ Furthermore, the method for manufacturing the optical reading card of this invention is as follows:
"Form a film on the substrate that has a high reflectance for reading light. 1) Apply a resist on the resist, and expose a mask in which patterns such as data bits and guide tracks are formed on the applied resist. , developing and transferring the pattern, etching the film from the resist to which the pattern has been transferred to create an optical reading medium having the film having the pattern on the substrate, and using the optical reading medium as a card. It is characterized by being attached to the base.

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

In FIG. 1, 1 is an optical reading card.

The optical reading card 1 is made by pasting an optical reading medium 3 on one or both sides of a card base 2.

The 7J-card base 2 guarantees the strength of the optical reading card 1, and the card base 2 can be made of paper, a synthetic resin plate such as PVC, or a thin metal plate.

The optical reading medium 3 has an optical reflective material layer 5 formed on a substrate 4, as shown in FIGS. 2 and 3.

The catch plate 4 is made of polycarbonate resin, acrylic resin,
It is made of a material with good light transmittance, such as glass. An optically reflective +3 layer 5 is deposited on the substrate 4 and has hole-shaped data bits 6 and groove-shaped guide tracks 7 formed thereon. Therefore, although the surface of the substrate 4 is exposed at the data bit 6 (y) guide 1 - rack 7 portion, the vapor deposition surface of the substrate 4 is covered with the optical reflective material layer 5 . The optical reflective material shown in FIG. 5 is composed of a thin film made of a material with high reflectivity.
, zn, sn, etc. can be used. This optical reflective material V451 is formed by depositing the above-mentioned abrasions on the substrate 4, and the pattern of the data bits 6 and guide tracks 7 formed on the optical reflective material layer 5 is a mask having such a pattern. or transferred from photographic film. Such transfer was performed by an etching method.

Adhesive 8 attaching the optical reading medium to the card weir body 2
Use one that has high absorption and transmittance for the reading light.

Next, a method of manufacturing the optical reading card as described above will be explained with reference to FIG.

First, it has high resistance to reading light by direct air deposition on the substrate 4! ') Form a film 5a of optical reflection (Δ) made of a material that makes l 1 (Fig. 4 (a)). Next, spin code a resist 11 on the film 5a (Fig. 4 (+1)). This resist 11 may be of positive type or may be of negative type.

Next, a mask 12 having a pattern of data bits and guide tracks is brought into close contact with the resist 11 and exposed (40th (40th)
C)).

Next, the exposed resist 11 is developed. This completes the transfer of the pattern onto the resist 11, and
There are concavities and convexities corresponding to data bits and guide tracks, and there are no resists in the concavities because they have been removed, and H5a
The surface of the resist 11 is exposed and the remaining portion C is covered with the film 5a.
(Fig. 4(d)).

Next, ff95a is etched from above the resist 11. As a result, the portion of the FJ 5 a that is not covered with the resist 11 is removed and the surface of the substrate 4 is exposed.
The portion of the film 5a covered with the resist 11 is deposited on the surface of the substrate 4 together with the resist (.
(Figure 4(e)). This residual part is an optical reflection r:! Senka 5
(Figs. 1 to 3).

This light, °γ, spray material V! 5 cooperates with the substrate 4 to transfer and express the data bits and guide tracks of the mask 12. In this way, the optical reading medium 3 is completed. .

Next, apply the adhesive 8 over the resist 11 of the optically readable medium 3 (FIG. 4(f)), and attach the optically readable medium 3 to one side of the card base 2, or to both sides of the card base 2 as necessary. (Figure 4 (g)).

After m, the optical reading card 1 is completed by shaping it into a specified cart shape (FIG. 4(h)).

[(1 Use and effect) In the optical reading card constructed in this way, a stand for illuminating the upper surface of the card base 1 with a laser beam, reflecting it on the optical reflective material layer 5, and reading the reflected light. Furthermore, the data bits 6 and the guide tracks 7 can be read by the difference in reflection between the presence and absence of the optical reflector layer 5.

Since such optically readable cards can be created using photoetching technology known as etching or transfer technology, card manufacturing and issuance can be done cheaply and quickly, and mass production can be quickly achieved during ceiling hanging production. At the same time, it is possible to quickly and inexpensively respond to orders for multiple scales and small lofts. However, since the data bits of this optical reading card can be reduced from several tens of tims to several micrometers, it is difficult to forge data, and the card can be prevented from being tampered with.

In addition, this optical reading card can store a large amount of data ranging from K13 bytes to Mbytes in card size, and can easily cope with an increase in the amount of information.

Furthermore, since this optical reading card is not affected by the Tatsunari+41 field unlike a magnetic card, there is no risk of data destruction and it is easy to handle.

[Brief explanation of drawings]

Figure 1 is an enlarged cross-sectional view of an optical reading card, Figure 2 is an enlarged perspective view of an optical reading medium, Figure 3 is an enlarged cross-sectional view of a light-reading medium, and Figure 4 is an enlarged cross-sectional view of an optical reading card. It is a process explanatory drawing which shows the manufacturing process of.

Claims (2)

[Claims] (1) An optical reading medium having a reflective surface on which information is recorded depending on the presence or absence of an optical reflective surface, and the presence or absence of the optical reflective surface is formed by an etching method, is adhered onto a card base. An optical reading card characterized by: (2) A film having a high reflectance for reading light is formed on the substrate, a resist is applied on the film, and a mask is formed in which patterns such as data bits and guide tracks are formed on the applied resist. The pattern is transferred by exposure and development, and the film is etched from the resist onto which the pattern is transferred to create an optical reading medium having the film having the pattern on the substrate, and the optical reading medium is A method for manufacturing an optically readable card, characterized by pasting it onto a card base.