Optical record blank and information record

Details Optical record blank and information record Optical record blank and information record

1984-12-10

1986-02-04

Goldberg, E. A.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

346 76L, 430346, 430945, G01D 1534, G11B 724

Patent

active

045689520

ABSTRACT:
A multi-layer optical record blank and information record comprises a light-reflective layer, a light-transmissive layer, a light-absorptive layer, and a heat-sensitive information layer wherein the thicknesses of the layers are chosen to achieve a low-reflection condition. Information is recorded as variations of an optical property in the information layer indirectly heated by light absorbed in the absorptive layer.

REFERENCES:
patent: 4101907 (1978-07-01), Bell et al.
patent: 4176277 (1979-11-01), Bricot et al.
patent: 4216501 (1980-08-01), Bell
patent: 4300143 (1981-11-01), Bell et al.
patent: 4329697 (1982-05-01), Bell
patent: 4383311 (1983-05-01), Ettenberg
patent: 4425570 (1984-01-01), Bell et al.
patent: 4460636 (1984-07-01), Watanabe

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