Optical information recording medium

Details Optical information recording medium Optical information recording medium

1989-04-14

1991-02-05

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428209, 428457, 428903, 369275, 369288, 346 76L, 3461351, 430945, B32B 302

Patent

active

049903888

ABSTRACT:
The present invention pertains to an optical information recording medium featuring a layered surface composition. A first surface is made of a light transmitting substrate, which has a second light absorptive layer which is laid on top of the light transmitting substrate. A light reflective layer is laid on top of the light absorptive layer. The light transmitting substrate will have a surface layer, which is adjacent to the light absorptive layer. This surface layer, is deformable by energy generated upon absorption of a laser beam by the light absorptive layer, to thereby form optically readable pits.

REFERENCES:
patent: 4315269 (1982-02-01), Bloom et al.
patent: 4360908 (1982-11-01), Howe et al.
patent: 4398203 (1983-08-01), Cornet
patent: 4404656 (1983-09-01), Cornet
patent: 4405994 (1983-09-01), Cornet et al.
patent: 4577291 (1986-03-01), Cornet
patent: 4586165 (1986-04-01), Cornet et al.
IBM Technical Disclosure Bulletin, vol. 25, No. 11B, Apr. 1983, Armonk USA pp. 5940-5941; K. Y. Ahn & Al; "Deformed Mirror Optical Storage Structure".

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