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AssigneeNippon Columbia Co., Ltd.
InventorsMasakazu Kobayashi, Yoshikazu Kato
Estimating the term…
A laminate type optical information recording medium which is identifiable on the basis of its color, is formed without change to conventional manufacturing steps by laminating two optical information recording media, each of which includes at least a substrate on which information is recorded, a semi-transparent layer for reflecting a reproduction laser beam, a transparent resin layer formed to cover the semi-transparent layer, a reflection layer for reflecting the reproduction laser beam and an adhesive layer formed to cover the reflection layer. The two substrates of the laminate type optical information recording medium have different transmission spectra in a visible region.
A plate-shaped optical information recording medium on which information is recorded and from which the information is optically reproduced by being irradiated with a reproduction laser beam and detecting the reproduction laser beam reflected from the medium, comprising:
A plate-shaped optical information recording medium on which information is recorded and from which the information is optically reproduced by being irradiated with a reproduction laser beam to the medium and detecting the reproduction laser beam reflected from the medium, comprising:
Dependencies are inferred from the claim text.