Optical information recording medium having protective layer

Details Optical information recording medium having protective layer Optical information recording medium having protective layer

1989-07-03

1990-04-24

Reynolds, Bruce A.

Recorders

Record receivers and/or driving means therefor

Disc

3461351, 369275, 369283, 369286, 430945, 430495, G01D 1524, G01D 900

Patent

active

049203592

ABSTRACT:
An optical information recording medium comprising a substrate, an optical recording layer formed over the surface of the substrate, and a protective layer covering the optical recording layer. The protective layer incorporates an antireflection means, such as a laser beam absorbing means, a laser beam scattering means or a laser beam transmitting means, for preventing the reflection of a laser beam applied to the optical recording layer.
An optical information recording medium of a second embodiment of the present invention, comprises a substrate, an optical recording layer formed over the surface of the substrate, a protective layer covering the optical recording layer, and a buffer layer interposed between the optical recording layer and the protective layer. At least one of the protective layer or the buffer layer incorporates at least one antireflection means, such as a laser beam absorbing means, a laser beam scattering means and a laser beam transmitting means, for preventing the reflection of a laser beam. The buffer layer facilitates precisely forming recording bits in the optical recording layer by locally deforming the optical recording layer by a laser beam.

REFERENCES:
patent: 3889272 (1975-06-01), Lou et al.
patent: 3911444 (1975-10-01), Lou et al.
patent: 3971874 (1976-07-01), Ohta et al.
patent: 3990084 (1976-11-01), Hamisch et al.
patent: 4000492 (1976-12-01), Willens
patent: 4037251 (1977-07-01), Bricot et al.
patent: 4176277 (1979-11-01), Bricot et al.
patent: 4278756 (1981-07-01), Bouldin et al.
patent: 4525412 (1985-06-01), Nakane et al.
patent: 4752554 (1988-06-01), Sato et al.
Patent Abstracts of Japan, vol. 10, No. 116 (P--452) [2173] Apr. 30, 1986; and JP--A--60 243 836 (Matsushita Denki Sangyo K.K.), 03--12--1985.
Patent Abstracts of Japan, vol. 10, No. 135, (P--457)[2192], May 20, 1986; and JP--A--60 256 933, (Matsushita Denki Sangyo K.K.) 18--12--1985.
Patent Abstracts of Japan, vol. 9, No. 83, (P--348)[1806], Apr. 12, 1985; and JP--A--59 213 040, (Ricoh K.K.), 01--12--1984.

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