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： US562071申请日： 1983-12-16
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公开(公告)号： US4594296A公开(公告)日： 1986-06-10
- 发明人: Kiyoshi Noguchi , Kouji Kobayashi , Suguru Takayama
- 申请人： Kiyoshi Noguchi , Kouji Kobayashi , Suguru Takayama
- 申请人地址： JPX Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX57-234813 19821225
- 主分类号： G11B5/706
- IPC分类号： G11B5/706 ; G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/716 ; G11B5/85
摘要：
A magnetic recording medium which comprises a magnetic layer formed on a substrate and comprising Co, or Co and one to three elements selected from the group consisting of Ni, Cr and O, wherein, when the magnetic layer is divided equally into four portions in the direction of the thickness of the magnetic layer, the density of the portion located farthest from the substrate is greater by at least 20% than the average density of three other portions.
公开/授权文献
- USD342482S Wiring rack 公开/授权日：1993-12-21
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