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

G - Physics

11

B

42/2

G11B 7/24 (2006.01) G06K 19/06 (2006.01) G06K 19/14 (2006.01) G11B 7/26 (2006.01) G11B 7/0033 (2006.01)

Patent

CA 1263535

ABSTRACT OF THE DISCLOSURE This optical recording card includes optical recording medium which is formed with optical information patterns each of which has an optical reflective layer and informations stored in the optical recording card can be read out in dependence on 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.

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