Optical recording medium and production method of the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 14, 2003
Grant Date -
Jun 14, 2001
app pub date -
Dec 5, 2000
filing date -
Dec 7, 1999
priority date (Note) -
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Abstract
The present invention relates to an optical recording medium having a protective layer and a phase-change recording layer on a substrate, said protective layer containing a metallic oxysulfide and an optical recording medium having a protective layer and a phase-change recording layer, said protective layer being formed by sputtering using a target comprising a metallic oxysulfide.
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