Optical recording medium

Details Optical recording medium Optical recording medium

1990-07-17

1992-06-02

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428457, 428913, 3692752, 346 76L, 3461351, 430945, 427162, 264106, B32B 302

Patent

active

051185490

ABSTRACT:
An optical recording medium for an audio-video or ROM compact disc comprises a pitted translucent base material and a layer of a corrosion resistant metal or combination of metals from the group consisting of tantalum, chromium, cobalt, and nickel. For example, TaNi or CrCo can be applied to the surface, providing good adhesion, reflecting light, providing a printable surface, and not requiring any further coating such as a protective lacquer.

REFERENCES:
patent: 4477555 (1984-10-01), Oba et al.
patent: 4709363 (1987-11-01), Dirks et al.
patent: 4754128 (1988-06-01), Takeda et al.
patent: 4839883 (1989-06-01), Nagata et al.
patent: 4956216 (1990-09-01), Hausler et al.
Patent Abstracts of Japan, vol. 11, No. 13 (C-397) Jan. 14, 1987.

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