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： US28570申请日： 1987-03-20
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公开(公告)号： US4956220A公开(公告)日： 1990-09-11
- 发明人: Toshinobu Sueyoshi , Seiichi Asada , Masahiro Amemiya , Seigi Kawarai , Akira Miyake
- 申请人： Toshinobu Sueyoshi , Seiichi Asada , Masahiro Amemiya , Seigi Kawarai , 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： JPX61-63169 19860320; JPX61-236664 19861004
- 主分类号： G11B5/706
- IPC分类号： G11B5/706 ; G11B5/712
摘要：
A magnetic recording medium with improved output characteristics and durability is provided by using magnetic powder comprising iron-containing particles each of which carries a compound containing aluminum and/or a compound containing silicon in such amounts that, in the whole magnetic powder, a weight ratio of silicon to iron is from 0.010:1 to 0.150:1, a weight ratio of aluminum to iron is from 0.040:1 to 0.150:1, and a weight ratio of aluminum to silicon is from 1:1 to 15:1.
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