Information storage medium containing a recording layer capable

Details Information storage medium containing a recording layer capable Information storage medium containing a recording layer capable

1990-11-28

1993-04-27

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430271, 430272, 430273, 430275, 430290, 430495, 430945, 3461351, G03C 172, G11B 724

Patent

active

052061140

ABSTRACT:
An information storage medium includes a substrate and a recording layer in which a portion irradiated with a light beam is subjected to a phase transformation between different phases. Upon radiation of a light beam having specific conditions, the recording layer exhibits a state in which both an amorphous phase and a non-equilibrium crystalline phase are present. This state corresponds to a recorded or erased state.

REFERENCES:
patent: 3530441 (1970-09-01), Ovshinsky
patent: 3716844 (1973-02-01), Brodsky
patent: 4647944 (1987-03-01), Gravesteijn et al.
patent: 4743526 (1988-05-01), Ando et al.
patent: 4773059 (1988-09-01), Minemura et al.
patent: 4889746 (1989-12-01), Utsumi et al.
Yamada et al, High Speed Overwritable Phase Change Optical Disk Material Japanese Journal of Applied Physics, vol. 26 (1987) Supplement 26-4.

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