Optical information recording medium

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430271, 430272, 430273, 430 19, 430944, 430945, 428 64, G03C 1705

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active

053858069

ABSTRACT:
This invention, related to an optical information recording medium for recording, reproducing and erasing information by causing changes in the optical constant by using light, heat or other means, is intended to propose a recording film material of a novel composition in order to realize higher transfer rate of signals. Specifically, it is an alloy composed of indium (In) and A and B (A is at least one element selected from Ag, Cu, and B is at least one element selected from S, Se, Te), and more particularly it is composed in the vicinity of the stoichiometric compound of the above three-element system.
Since the recording film material of this invention is fast in the rate of crystallization, it is possible to present an optical information recording medium that can cope with the forthcoming trend of higher transfer rate of signals.

REFERENCES:
patent: 3907566 (1975-09-01), Inoue et al.
patent: 4198237 (1980-04-01), Nahara et al.
patent: 4383029 (1983-05-01), Yamada et al.
patent: 4434427 (1984-02-01), Terao et al.
patent: 4499178 (1985-02-01), Wada et al.
patent: 4798660 (1989-01-01), Ermer et al.
patent: 4837127 (1989-06-01), Ohara et al.
Hawleys Condensed Chemical Dictionary, 11th edition, Van Nostrand Reinhold Company, N.Y., "Alloy".
"Alloy Capable of Varying Spectral Reflectance and Recording Material"; vol. 10 No. 321 (C-382) [2377] Oct. 31, 1986.

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