High density optical disk

Details High density optical disk High density optical disk

1993-07-08

1995-10-10

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428195, 428206, 428323, 428688, 428913, 3692752, 430945, B32B 302

Patent

active

054569613

ABSTRACT:
An optical disk allows recording of information at high density and accurate reproduction of such high-density recorded information. The optical disk according to the invention has a shutter layer, formed directly or through an intermediate layer on a substrate, for tightening a light beam to be irradiated to read or write information, the shutter layer containing semiconductor fine particles.

REFERENCES:
patent: 4969141 (1990-11-01), Takaoka et al.
patent: 5153873 (1992-10-01), Spruit et al.

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