Optical recording medium

Details Optical recording medium Optical recording medium

1992-06-12

1994-09-06

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428457, 428913, 346 76L, 3461351, 430945, B32B 300

Patent

active

053446828

ABSTRACT:
An optical recording medium of a single plate type comprises a substrate having a groove, a recording layer containing a dye overlying the substrate, a reflective layer overlying the recording layer and a protective layer overlying the reflective layer, wherein the recording layer is formed by a spin-coating method and the dimension of the groove varies from the center portion of the substrate toward the outer periphery thereof.

REFERENCES:
patent: 4947384 (1990-08-01), Suzuki
patent: 5075147 (1991-12-01), Usami
patent: 5080946 (1992-01-01), Takagisi
Patent Abstracts of Japan, vol. 14, No. 122 (P-1017) Mar. 7, 1990.
Patent Abstracts of Japan, vol. 14, No. 059 (P-1000) Feb. 2, 1990.
Patent Abstracts of Japan, vol. 9, No. 232 (P-389) (1955) Sep. 18, 1985.
Patent Abstracts of Japan, vol. 13, No. 203 (P-870) (3551) May 15, 1989.
Patent Abstracts of Japan, vol. 13, No. 428 (P-936) (3776) Sep. 25, 1989.

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