Optical information recording medium and method of manufacture
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKenichi Nagata, Eiji Ohno, Noboru Yamada
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Abstract
By forming recording layer (3), or recording material particles (10), (13) dispersed in protection material (9) with the laser sputtering, the initialization of recording layer (3) become, unnecessary or easy, and optical storage medium having long repetition life of recording and erasing is obtained.
Claims10
A method of manufacturing an optical information recording medium which is provided on a substrate with a recording layer comprising a material capable of being changed from an amorphous to a crystalline state by irradiation with a light beam, and which records, erases or reproduces information by irradiation with a light beam, characterized in that the recording layer is formed in a crystalline state by irradiation pulse laser scanning upon a solid target confronting the substrate and without heat treatment initialization.
A method of manufacturing an optical information recording medium which is provided on a substrate with a recording material capable of being able to be reversibly changed between an amorphous and a crystalline state by irradiation with a light beam, and a protection material having melting and softening temperatures higher than the melting temperature of the recording material, and which records, erases, or reproduces information by irradiation with a light beam, characterized in that the recording material and protection material are formed simultaneously, and the recording material is formed in a crystalline state by a scanning pulse laser upon a solid target confronting the substrate and without heat treatment initialization.
Dependencies are inferred from the claim text.