发明公开
- 专利标题： A magnetic recording medium and its production method and a magnetic recording apparatus
- 专利标题（中）： 磁记录介质及其制作方法及磁记录装置
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申请号： EP91113218.1申请日： 1991-08-06
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公开(公告)号： EP0472047A3公开(公告)日： 1992-03-11
- 发明人: Matsuda, Yoshibumi , Futamoto, Masaaki , Miyamura, Yoshinori , Takagaki, Tokuho , Takano, Hisashi , Kugiya, Fumio , Nakao, Takeshi , Akagi, Kyo , Suzuki, Mikio , Fukuoka, Hirotsugu , Munemoto, Takayuki
- 申请人： HITACHI, LTD.
- 申请人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101 JP
- 专利权人： HITACHI, LTD.
- 当前专利权人： HITACHI, LTD.
- 当前专利权人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101 JP
- 代理机构： Strehl Schübel-Hopf Groening & Partner
- 优先权： JP217048/90 19900820
- 主分类号： G11B5/66
- IPC分类号： G11B5/66 ; G11B5/716
摘要：
In a magnetic recording medium, both the saturation induction and the coercive force of a magnetic film increase towards a surface of the recording medium. Information can be recorded with a linear recording density higher than 50 kFCI even with a spacing around 0.2 µm.
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