发明授权
- 专利标题: Optical magnetic recording medium
- 专利标题(中): 光磁记录介质
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申请号: US87989申请日: 1987-08-17
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公开(公告)号: US4777082A公开(公告)日: 1988-10-11
- 发明人: Hideki Ishizaki , Takayoshi Kobuke , Suguru Takayama
- 申请人: Hideki Ishizaki , Takayoshi Kobuke , Suguru Takayama
- 申请人地址: JPX Tokyo
- 专利权人: TDK Corporation
- 当前专利权人: TDK Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX60-34026 19850222
- 主分类号: B41M5/26
- IPC分类号: B41M5/26 ; G11B7/243 ; G11B11/10 ; G11B11/105 ; G11B7/24
摘要:
In an optical recording medium comprising a substrate and a recording layer thin film comprised of a rare earth element and a transition metal, for example, TbFeCo on the substrate, a metal thin film layer having a high magnetic permeability, for example, Permalloy is formed on the recording layer. A transparent dielectric film layer may be formed between the substrate and the recording layer thin film.
公开/授权文献
- US06091064A Safety system with intermittent photoelectric beam 公开/授权日:2000-07-18
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