发明名称 |
Optical disk with glass substrate and method of producing same |
摘要 |
An optical disk with a substrate made of glass at least partially has its inner and outer peripheral surfaces polished to surface roughness of 5 mu m or less so as to reduce the amount of glass powder generated from these surfaces and to thereby improve the yield.
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申请公布号 |
US5128922(A) |
申请公布日期 |
1992.07.07 |
申请号 |
US19910687769 |
申请日期 |
1991.04.18 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
INUI, TETSUYA;HIROKANE, JUNJI;SHIBATA, AKIRA;NAGAHARA, YOSHIYUKI;OHTA, KENJI |
分类号 |
B24B9/08;G11B7/24;G11B7/26;G11B11/10;G11B11/105 |
主分类号 |
B24B9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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