发明公开
EP1089262A1 Magnetic recording medium and process for producing same
审中-公开
Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Herstellung
- 专利标题： Magnetic recording medium and process for producing same
- 专利标题（中）： Magnetisches Aufzeichnungsmedium und Verfahren zu seiner Herstellung
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申请号： EP00308637.8申请日： 2000-09-29
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公开(公告)号： EP1089262A1公开(公告)日： 2001-04-04
- 发明人: Kakihara, Yasuo
- 申请人： Toda Kogyo Corporation
- 申请人地址： 1-2, Funairiminami 4-chome, Naka-ku Hiroshima-shi, Hiroshima-ken JP
- 专利权人： Toda Kogyo Corporation
- 当前专利权人： Toda Kogyo Corporation
- 当前专利权人地址： 1-2, Funairiminami 4-chome, Naka-ku Hiroshima-shi, Hiroshima-ken JP
- 代理机构： Woods, Geoffrey Corlett
- 优先权： JP28198699 19991001
- 主分类号： G11B5/64
- IPC分类号： G11B5/64 ; G11B5/84
摘要：
There is disclosed a magnetic recording medium having an excellent surface smoothness which comprises a substrate and a maghemite thin film formed on the substrate, the maghemite thin film having a thickness of 10 to 50 nm and a surface roughness represented by an average surface roughness (Ra) of 0.1 to 0.7 nm and a max height (R max ) of 1 to 10 nm.
Such a magnetic recording medium can exhibit an excellent surface smoothness without deterioration in a high coercive force thereof.
Such a magnetic recording medium can exhibit an excellent surface smoothness without deterioration in a high coercive force thereof.
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