发明公开
- 专利标题: Magneto optical recording medium and method
- 专利标题(中): 磁选Aufzeichnungsmedium und -verfahren
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申请号: EP97202863.3申请日: 1992-07-14
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公开(公告)号: EP0818783A2公开(公告)日: 1998-01-14
- 发明人: Kobayashi, Tadashi , Hasegawa, Koyo , Hongu, Kazuoki , Yamamoto, Masakuni
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
- 代理机构: Beresford, Keith Denis Lewis
- 优先权: JP175159/91 19910716; JP218446/91 19910829; JP18451/92 19920108
- 主分类号: G11B11/10
- IPC分类号: G11B11/10
摘要:
A magneto-optical recording method employs a magneto-optical recording medium having a first magnetic layer which exhibits low coercive force at room temperature and high Curie temperature and a second magnetic layer which is exchange-coupled to the first magnetic layer and which exhibits a higher coercive force and a lower Curie temperature as compared with those of the first magnetic layer. A magnetic field modulated in accordance with information to be recorded is applied to the magneto-optical recording medium while irradiating it with a light beam of a constant intensity so as to record the information. The recorded information is simultaneously confirmed by using a reflected light of this light beam.
公开/授权文献
- EP0818783A3 Magneto optical recording medium and method 公开/授权日:1999-04-14
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