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公开(公告)号:US5327409A
公开(公告)日:1994-07-05
申请号:US951849
申请日:1992-09-28
申请人: Itaru Suzuki , Hajima Yano , Hiroyuki Wakasugi , Kaoru Nakajima
发明人: Itaru Suzuki , Hajima Yano , Hiroyuki Wakasugi , Kaoru Nakajima
IPC分类号: G11B11/10 , G11B11/105 , G11B7/00 , G01J1/20
CPC分类号: G11B11/10576 , G11B11/10582
摘要: A magneto-optical disc system and a medium used therewith are disclosed in which a magneto-optical disk having a magneto-optical recording layer on one major surface with a protective film formed on said magneto-optical recording layer, on which a magnetic head is slid, and an optical system having a focus servo mechanism on the other surface. The focus servo mechanism of the optical system satisfies a certain condition to avoid any focal blank.
摘要翻译: 公开了一种磁光盘系统及其使用的媒体,其中在一个主表面上具有磁光记录层的磁光盘与形成在磁光记录层上的保护膜形成磁头 并且在另一个表面上具有聚焦伺服机构的光学系统。 光学系统的聚焦伺服机构满足一定条件以避免任何焦点空白。