发明名称 |
Magneto-optical disk and method of manufacturing the same |
摘要 |
A magneto-optical disk comprising a substrate whereon a recording medium is formed, and a depression is formed on the substrate on the inside of the recording medium of the substrate. A center hub is installed on the depression such that the center hub is substantially level with a protective resin layer covering the recording medium. On the center hub, a flying head performs CSS (Contact Start and Stop). This configuration of the disk eliminates the occurrence of dust due to the abrasion and head crash, and achieves stable CSS. A method of manufacturing the magneto-optical disk, wherein the protective resin layer is formed after installing the center hub on the depression. In this method, since a space is not produced between the center hub and the protective resin layer, the stable flying characteristics is obtained. And a magneto-optical disk whereon small physical bumps and pits are formed on the substrate on the inside of the recording medium, which prevents the flying head from sticking to the disk. A method of manufacturing the magneto-optical disk by using a stamper, which permits the disk to be mass produced.
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申请公布号 |
US5353278(A) |
申请公布日期 |
1994.10.04 |
申请号 |
US19910694990 |
申请日期 |
1991.05.02 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
MURAKAMI, YOSHITERU;NAKAYAMA, JUNICHIRO;KATAYAMA, HIROYUKI;TAKAHASHI, AKIRA;OHTA, KENJI;TOKI, HIROTAKA |
分类号 |
G11B11/105;G11B23/00;(IPC1-7):G11B5/54 |
主分类号 |
G11B11/105 |
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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