Optical information record member

Details Optical information record member Optical information record member

1981-07-10

1982-11-09

Hartary, Joseph W.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

156664, 346 76L, 430270, 430945, G01D 1534

Patent

active

043587801

ABSTRACT:
An optical information record member having a substrate and an optical information carrier layer formed on the substrate is disclosed. The layer is composed of 40 to 80 atomic % of In and 60 to 20 atomic % of one of Se and S. The layer will be changed into a material which is insoluble to alkaline etchant upon the exposure to a light beam which is modulated in response to information signals to be recorded.

REFERENCES:
patent: 3894179 (1975-07-01), Jacobs
patent: 4032691 (1977-06-01), Kido
patent: 4087281 (1978-05-01), Toda

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