Optical information recording medium having discernible obverse

Details Optical information recording medium having discernible obverse Optical information recording medium having discernible obverse

1996-10-09

1997-12-30

Evans, Jefferson

Dynamic information storage or retrieval

Storage medium structure

Layered

G11B 724

Patent

active

057038686

ABSTRACT:
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.

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