发明授权
- 专利标题： Perpendicular magnetic recording medium and method for producing the same
- 专利标题（中）： 垂直磁记录介质及其制造方法
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申请号： US596760申请日： 1990-10-01
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公开(公告)号： US5068144A公开(公告)日： 1991-11-26
- 发明人: Osamu Kitakami , Hideo Fujiwara , Kiyotaka Ojima , Youichi Ogawa , Kunio Wakai
- 申请人： Osamu Kitakami , Hideo Fujiwara , Kiyotaka Ojima , Youichi Ogawa , Kunio Wakai
- 申请人地址： JPX Osaka
- 专利权人： Hitachi Maxell, Ltd.
- 当前专利权人： Hitachi Maxell, Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX60-136790 19850625
- 主分类号： G11B5/70
- IPC分类号： G11B5/70 ; C09D5/23 ; C09D7/12 ; G11B5/64 ; G11B5/65 ; G11B5/702 ; G11B5/706 ; G11B5/73 ; G11B5/848 ; G11B5/85
摘要：
A perpendicular magnetic recording medium comprising a non-magnetic substrate and a magnetic layer which is formed on at least one surface of the substrate and comprises acicular particles of ferromagnetic metal oriented perpendicularly to a plane of the layer and an organic polymer filled in spaces between the acicular particles so as to surround the acicular particules, wherein a volume content of the organic polymer is about 5 to 55% by volume of the whole volume of the magnetic layer, which medium has not only good recording and reproducing characteristics but also improved durability.
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