Optical recording medium

Details Optical recording medium Optical recording medium

1987-12-23

1990-02-20

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of inorganic material

428900, 428469, 369286, G11B 566, G11B 370, B32B 900

Patent

active

049025848

ABSTRACT:
An optical recording medium comprising a recording layer on a substrate and a protective layer formed adjacent to the upper or lower surface of the recording layer is more durable and corrosion resistant when the protective layer has a composition comprising silicon, a divalent metal such as Ba, Ca or Sr, oxygen, and nitrogen. An intermediate layer containing silicon, a metal or metalloid such as aluminum or lanthanum, oxygen and nitrogen is formed between the protective layer and the recording layer.

REFERENCES:
patent: 4645722 (1987-02-01), Katayama et al.
patent: 4658388 (1987-04-01), Ishiwatari et al.
patent: 4661420 (1987-04-01), Nakamura et al.
patent: 4680742 (1987-07-01), Yamada et al.
patent: 4743502 (1988-05-01), Yoshitomi et al.

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