发明授权
- 专利标题: Magneto-optical disk and method of manufacturing the same
- 专利标题(中): 磁光盘及其制造方法
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申请号: US694990申请日: 1991-05-02
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公开(公告)号: US5353278A公开(公告)日: 1994-10-04
- 发明人: Yoshiteru Murakami , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Hirotaka Toki
- 申请人: Yoshiteru Murakami , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Hirotaka Toki
- 申请人地址: JPX Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JPX Osaka
- 优先权: JPX2-119451 19900508; JPX2-121472 19900510
- 主分类号: G11B11/105
- IPC分类号: G11B11/105 ; G11B23/00 ; G11B5/54
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.
公开/授权文献
- US5743183A Dampening unit for an offset printing machine 公开/授权日:1998-04-28