发明授权
- 专利标题: Magnetic recording medium
- 专利标题(中): 磁记录介质
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申请号: US777017申请日: 1985-09-17
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公开(公告)号: US4895758A公开(公告)日: 1990-01-23
- 发明人: Akito Sakemoto , Hideo Fujiwara , Kunio Mizushima , Akira Miyake
- 申请人: Akito Sakemoto , Hideo Fujiwara , Kunio Mizushima , Akira Miyake
- 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: JPX59-194866 19840919; JPX59-194867 19840919; JPX59-196150 19840919
- 主分类号: G11B5/012
- IPC分类号: G11B5/012 ; G11B5/127 ; G11B5/70 ; G11B5/706 ; G11B5/714
摘要:
A magnetic recording medium suitable for high density recording comprising a non-magnetic substrate and a magnetic layer which contains a non-magnetic binder and ferromagnetic powder dispersed therein formed on said substrate, the coercive force of the magnetic layer being from 1,400 to 2,000 oersteds, the residual magnetic flux density being at least 1,100 gausses and a thickness of the layer being at least 0.5 .mu.m, which effectively works when it is used together with a magnetic head, a part of which near a magnetic gap, made of a magnetic material having saturation magnetic flux density of at least 7,000 gausses and which has a magnetic gap length of 0.15 to 0.4 .mu.m.
公开/授权文献
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