Optical recording card and method of producing the same

Details Optical recording card and method of producing the same Optical recording card and method of producing the same

1989-01-23

1990-09-11

Ryan, Patrick

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428201, 428203, 428204, 428206, 428913, 430 11, 430 12, 430 14, 430 15, 430 16, 430945, 369288, 156 60, 156228, 346 76L, 3461351, B32B 302

Patent

active

049562150

ABSTRACT:
This optical recording card includes optical recording medium which is formed with optical information patterns each of which has an optical reflective layer and information stored in the optical recording card can be read out in dependency on the difference in optical reflectivity of the optical information pattern. It is not economical that the optical reflective layer of the optical recording card is formed on a base sheet by etching or the like, wherein the base sheet is prepared in the form of a sheet. The optical recording card is produced by way of the steps of forming an optical reflective layer on a continuous base film having large area and then die cutting the assembly of optical reflective layer and base film into a large number of optical recording cards having required dimensions in such a state that the optical recording medium is held between a card base and a protective sheet.

REFERENCES:
patent: 4507346 (1985-03-01), Maurer et al.
patent: 4579754 (1986-04-01), Maurer et al.
patent: 4673626 (1987-06-01), Takeda et al.
patent: 4692394 (1987-09-01), Drexler

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