Information recording medium glass substrate and information recording medium

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United States of America Patent

PATENT NO 9454984
APP PUB NO 20140227561A1
SERIAL NO

14347944

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An information recording medium glass substrate and an information recording medium are provided in which a first roll-off variation and a second roll-off variation fall within the following ranges: 180 Å≦first roll-off variation≦990 Å (condition 1) and 650 Å≦second roll-off variation≦3700 Å (condition 2).

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Patent Owner(s)

  • HOYA CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Endo, Takeshi Osakasayama, JP 204 2407

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