发明公开
- 专利标题： Magnetic recording medium
- 专利标题（中）： 磁记录介质
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申请号： EP90102289.7申请日： 1990-02-06
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公开(公告)号： EP0382156A3公开(公告)日： 1991-05-08
- 发明人: Koyama, Noboru , Nakano, Yasushi , Yasufuku, Yoshitaka , Kawahara, Setsuko , Namiki, Takemasa , Kawabe, Shigetoshi , Umemura, Masahiro
- 申请人： KONICA CORPORATION
- 申请人地址： 26-2, Nishishinjuku 1-chome, Shinjuku-ku Tokyo 160 JP
- 专利权人： KONICA CORPORATION
- 当前专利权人： KONICA CORPORATION
- 当前专利权人地址： 26-2, Nishishinjuku 1-chome, Shinjuku-ku Tokyo 160 JP
- 代理机构： Türk, Gille, Hrabal, Leifert
- 优先权： JP30484/89 19890208; JP49207/89 19890228; JP79308/89 19890329; JP79311/89 19890329
- 主分类号： G11B5/716
- IPC分类号： G11B5/716 ; G11B5/708
摘要：
A magnetic recording medium having plural magnetic layers is disclosed. The uppermost magnetic layer contains an abrasive with an average particle diameter of not more than 0.3 µm, and a magnetic layer other than the uppermost magnetic layer contains an abrasive with an average particle diameter of not less than 0.3 µm. The medium is improved in the electromagnetic conversion characteristics and sliding noise.
公开/授权文献
- EP0382156B2 Magnetic recording medium 公开/授权日：1997-03-05
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