Erasable optical recording element and method of optically recor

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product

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430 19, 430346, 430945, 430964, 3461351, G03C 172

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active

048186660

ABSTRACT:
Erasable optical recording element according to FIG. 1 having a substrate 1 and a recording layer 4 which is provided thereon and which satisfies the formula (QSb).sub.100-x M.sub.x, wherein Q is the element Ga or In, M is a metal or chalcogenide element and x has the value 2-15, as well as a method of optically recording and erasing information in which under the influence of pulsated laser light amorphous info areas 10 are formed in the recording layer 4, which areas can be reverted by laser light to the crystalline phase and can be erased.

REFERENCES:
patent: 4637976 (1987-01-01), Terao et al.
patent: 4647944 (1987-03-01), Gravesteijn et al.

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