Single-substrate multi-layer optical disk for read-only storage and phase change rewritable storage
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United States of America Patent
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Jan 13, 1998
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N/A
app pub date -
Oct 15, 1996
filing date -
Oct 13, 1995
priority date (Note) -
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Abstract
An optical disk includes a transparent rigid substrate, a phase change rewritable optical recording medium formed on the transparent rigid substrate, a transparent spacer formed on the phase change rewritable optical recording medium and having a grooved surface for storing information, and a reflecting layer formed on the grooved surface of the transparent spacer. The grooved surface of the transparent spacer and the reflecting layer form a read-only recording medium.
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