Methods of recording and reproducing information using an optica

Details Methods of recording and reproducing information using an optica Methods of recording and reproducing information using an optica

1994-12-15

1997-01-07

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Electrical modification or sensing of storage medium

369285, 369288, 369116, 3692752, 428436, 428 644, 428 651, 430945, G11B 724

Patent

active

055924611

ABSTRACT:
An optical recording medium is provided with a masking layer on a side of a recording layer for receiving a reproducing beam. The masking layer is prepared from that containing photochromic dye molecules having absorption at the wavelength of the reproducing beam and causing a photon mode reaction by absorbing the reproducing beam to be reduced in absorption.

REFERENCES:
patent: 5175079 (1992-12-01), Van et al.
patent: 5284691 (1994-02-01), Taniguchi et al.
patent: 5294522 (1994-03-01), Uchida et al.
patent: 5436885 (1995-07-01), Okumura et al.
patent: 5460907 (1995-10-01), Ducharme et al.
patent: 5464673 (1995-11-01), Watanabe et al.
Bull. Chem. Soc. Jpn.; "Thermally Irreversible Photochromic Systems. Reversible Photocyclization of 1,2-Bis(benso[b]thiphen-3-yl)ethene Derivatives"; 63, 1311-1315 (1990).
"Optical Recording Characteristics of Photochromic Media" Symposium on Optical Memory 1994.

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