JP2640099B2 - Optical card manufacturing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing an optical card.

In recent years, cards recording various information as ID cards, cash cards, and bank cards have become widespread.

[Prior Art] This kind of card needs to record various information such as personal data and data of an issuing company. In an early stage, such information is recorded by visible characters or symbols. In the latter stage, recording is performed using electric signals using magnetism, but it is necessary to prevent tampering and to cope with an increase in the amount of information.

For this purpose, optical cards and laser cards to which laser technology is applied have recently been developed. This optical card includes an information recording medium having an optical information pattern having an optical reflection surface,
The optical reflection surface functions as a data pit or a guide track, and is configured to detect a data pit by a laser based on a difference in optical reflection of the optical information pattern and read information.

What has been conventionally adopted as a process for manufacturing such an optical recording medium or an optical card having such an optical recording medium is performed by vapor deposition on the entire surface of a base sheet made of a sheet having the same size as the card base material. A metal reflective film is formed, and thereafter, an optical information pattern is engraved on the metal reflective film at a portion to be used as a recording medium by an etching method or a registry lift-off method, and a remaining portion not used as an optical recording medium is removed. Then, the base sheet having the optical recording medium thus formed is bonded to a card substrate to complete an optical card.

[Problems to be Solved by the Invention] However, although an optical recording medium is usually provided on a part of an optical card, in order to manufacture the optical recording medium, a sheet having the same size as the card base material is required. Preparing a leaf base sheet, forming a metal reflection film on the entire surface, removing unnecessary remaining portions of the metal reflection film while leaving a portion where an optical information pattern is to be formed, the number of steps and Not only the required time is increased, but also material is wasteful. Further, it is considerably difficult to obtain the remaining optical recording medium with few pinholes, which causes an increase in the cost of the optical card. Moreover, it is difficult to improve the production efficiency if the optical recording medium is handled in a single-wafer manner like a completed optical card.

The present invention has been made in view of the above-described circumstances, is capable of mass-producing optical cards, can obtain an optical recording medium without pinholes, and has no material waste. Moreover, it is an object of the present invention to provide a method for manufacturing an optical card, which requires a smaller number of steps and a shorter time for producing an optical card.

[Means for Solving the Problems] In response to this object, an optical card manufacturing method according to the present invention provides an optical card comprising an optical recording medium sandwiched between a card base material and a light-transmitting protective layer. The base film is unreeled from a roll around which the base film is wound, a light reflection layer is formed on the base film, and then a plurality of light information patterns having low light reflection are formed on the light reflection layer. A plurality of optical recording media with multiple faces are formed at the same time to form a multi-faceted optical recording medium, and the plurality of optical recording media are cut into a continuous body of a plurality of optical recording media arranged in a row adjacent to each other. On the optical information pattern of the continuum, a protective layer film drawn out from a roll on which the protective layer film is wound is laminated to form a laminated body, and the laminated body is subjected to a plurality of optical recordings. The sheet is cut out for each medium to form a laminated sheet. In addition, the sheet body of the card base material is bonded so that the optical recording medium is sandwiched between the sheet bodies of the bonded body, and then cut into individual cards.

[Operation] The optical card manufacturing method of the present invention can easily manufacture a high-precision optical information pattern with little waste of material, and is excellent in mass productivity.

[Embodiment] Hereinafter, details of the present invention will be described with reference to the drawings showing one embodiment.

1 and 2, reference numeral 1 denotes an optical card. The optical card 1 has an optical recording medium 4 sandwiched between a bonded card base material 2 and a protective layer 3.

The card substrate 2 guarantees the strength of the optical card 1,
As such a card base material 2, paper, a synthetic resin plate such as PVC, or a metal thin plate can be used. On the card base material 2, a visible pattern layer 5 for displaying visible information such as characters and figures, and a magnetic recording layer 9 are displayed by printing or the like.

The protective layer 3 is made of a material having good light transmittance, such as polycarbonate resin, acrylic resin, and glass.
The optical recording medium 4 includes a base film 6, a light reflection film 7 formed thereon, and an optical information pattern layer 8 thereon. The base film 6 functions as a support for supporting the light reflecting film 7 and the optical information pattern layer 8, and a film made of a material such as polyester and having excellent smoothness is used. The light reflection film 7 is deposited on the base film 6. The light reflecting film 7 is composed of a thin film made of a material having high light reflectivity, and such a material as Al, Cu, A
g, Ni, Cr, Zn, Sn, Ti and the like can be used. The light reflecting film 7 is formed by evaporating the above-mentioned material on the base film 6.

In addition, the improvement of the smoothness of the base film 6 and the light reflection film 7
A sub-layer may be interposed between the base film 6 and the light reflecting film 7 in order to increase the adhesiveness of the substrate. Light reflection film 7
The optical information pattern layer 8 is formed thereon. The optical information pattern layer 8 is a low-light-reflection layer having fine holes for expressing data pits and guide tracks. Therefore, the lower light reflection film 7 is exposed in the fine holes to expose the data pits and guide tracks. In other portions, the light reflection film 7 is hidden by the light information pattern layer 8 having low light reflectivity.

This optical information pattern layer is printed, coated with a photographic emulsion and then exposed and developed, or colored and formed into a layer having low light reflectivity, followed by etching or registry off, and Is formed by coloring a layer patterned by etching or registry lift-off later.

Such an optical recording medium 4 is adhered to a desired portion of the protective layer 3 by a transparent adhesive layer 11,
The protective layer 3 and the protective layer 3 are adhered to each other by the adhesive layer 10 so as to be sandwiched therebetween.

Note that a hardened surface hardened layer 12 may be provided on the readout side of the protective layer 3 integrally with or separately from the protective layer 3 for improving scratch resistance.

Next, the manufacturing process of the optical card as described above will be described with reference to FIG.

First, a roll 3a for the protective layer 3 and a plurality of base film rolls 6a are prepared (FIGS. 3A and 3B).

As for the base film roll 6a, a narrow width base film 6 is unwound from the roll 6a and a vacuum evaporation apparatus is provided on one side.
The light reflection film 7 is formed by the method 23 (FIG. 3C). Next, an optical information pattern is formed. That is, the optical information pattern layer 8 is printed on the vapor-deposited light reflection film 7 by using a printing machine 24 using a low-reflection ink (FIG. 3D). Thus, the multi-sided optical recording medium 4a is completed.

Next, the optical recording medium is divided into tapes by the slitter 25 to obtain a continuous body 4b (FIG. 3E). The continuum 4b of the optical recording medium has the same width as the width of the optical recording medium 4, and is in a state in which a plurality of the optical recording media 4 are arranged in a row adjacent to each other.

With respect to the roll 3a of the protective layer, the film of the protective layer 3 is unwound from the roll 3a and the outer surface is subjected to a surface hardening treatment by a coater 26 (FIG. 3 (f)).
To coat the adhesive 11 (FIG. 3 (g)).

In the protective film 3 and the optical recording medium 4 thus formed,
The protective layer 3 and the optical recording medium 4 are bonded together with an adhesive layer 11 (FIG. 3 (h)). Next, this is cut into sheet bodies (FIG. 3 (i)). Next, in a state where the optical recording medium 4 is sandwiched, the protective layer 3 and the sheet body of the card base material 2 on which the adhesive 10 is applied are bonded together (FIG. 3 (j)).

The optical card 1 is completed by pulling out the assembly of the optical cards 1 bonded together as described above for each optical card unit (FIG. 3 (k)).

In the optical card 1 thus configured, the side of the protective layer 3 is the read side, and from the read side, the light enters the read optical recording medium 4 and the presence or absence of data pits is read based on the reactivity, and the information can be read. .

[Effects of the Invention] In the method for manufacturing an optical card according to the present invention, an expensive optical recording medium is not formed for each optical card by etching or the like.
Since a large number of optical recording media are produced on a continuous large-area base film on multiple sides and cut out for each optical recording medium to be used, waste of materials can be reduced, and the number of steps and time required for production Can also be saved.

Further, in the method for manufacturing an optical card according to the present invention, the formation of the light reflecting film on the optical recording medium can be performed by using a roll of a winding system. In the case of manufacturing a light reflecting film in a single-wafer form, the cost of the Al deposition is more than 10 times as large as that of the winding type, so that the present invention exerts a remarkable effect also in terms of cost.

[Brief description of the drawings]

FIG. 1 is a front view of an optical card, and FIG. 2 is II in FIG.
FIG. 3 is a sectional view taken along the line II, and FIG. 3 is an explanatory view showing an example of the manufacturing process of the optical card. 1 ... optical card, 2 ... card base material, 3 ... protective layer, 4
… Optical recording medium 5… Visible pattern layer 6… Base film 6a…
Roll 7: Light reflecting film, 8: Optical information pattern layer, 9: Magnetic recording layer, 10: Adhesive layer 11: Adhesive layer, 12: Surface hardened layer, 23: Vacuum evaporation device 24 ... printing press, 25 ... slitter, 26 ... coater, 27
…… Coater

Continuation of the front page (56) References JP-A-57-212638 (JP, A) JP-A-61-115186 (JP, A) JP-A-61-115187 (JP, A)

Claims (1)

(57) [Claims] 1. A method for manufacturing an optical card comprising an optical recording medium sandwiched between a card base material and a light-transmitting protective layer,
The base film is unwound from the roll on which the base film is wound, a light reflection layer is formed on the base film, and then a plurality of light-reflective light information patterns are simultaneously formed on the light reflection layer in a plurality of rows with multiple faces. To produce a multi-sided optical recording medium, cutting the plurality of optical recording media into a continuum of a plurality of optical recording media arranged side by side, and then the optical information of the continuum of a plurality of optical recording media On the pattern, a protective layer film unwound from a roll of the protective layer film is laminated to form a laminated body, and the laminated body is cut into a plurality of optical recording media and laminated. Forming a sheet of the bonded body, bonding the sheet of the card substrate so as to sandwich the optical recording medium between the sheets of the bonded body, and then cutting each individual card. Characteristic optical card manufacturing method