发明授权
- 专利标题: Over write capable magnetooptical recording medium, recording method and apparatus using the same
- 专利标题(中): 超写写磁光记录介质,记录方法和使用其的装置
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申请号: US668376申请日: 1991-03-11
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公开(公告)号: US5126986A公开(公告)日: 1992-06-30
- 发明人: Jun Saito , Masatoshi Sato , Hiroyuki Matsumoto
- 申请人: Jun Saito , Masatoshi Sato , Hiroyuki Matsumoto
- 申请人地址: JPX Tokyo
- 专利权人: Nikon Corporation
- 当前专利权人: Nikon Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX62-120642 19870518
- 主分类号: G11B5/02
- IPC分类号: G11B5/02 ; G11B11/10 ; G11B11/105
摘要:
A multi-layered magnetooptical recording medium that satisfies predetermined formulas is over write capable when used, in a recording method and apparatus, with a jointing field, i.e., a magnetic field the intensity of which decreases continuously from an initial field to a bias field having the same direction as the initial field, permitting greater freedom in the choice of media compositions. In a two-layer structure including magnetically coupled recording and reference layers, recorded data may advantageously be reproduced from the reference layer.
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