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: US918973申请日: 1986-10-15
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公开(公告)号: US4797321A公开(公告)日: 1989-01-10
- 发明人: Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake , Kohji Norimatsu
- 申请人: Masaya Funahashi , Teruhisa Miyata , Kenichi Inoue , Akira Miyake , Kohji Norimatsu
- 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: JPX60-230575 19851015
- 主分类号: C09D5/23
- IPC分类号: C09D5/23 ; G11B5/708 ; G11B5/71 ; G11B5/82 ; G11B5/70
摘要:
A magnetic recording disc having a high durability and good electromagnetic conversion characteristics which comprises a non-magnetic support and a magnetic layer provided on at least one surface of the support, wherein the magnetic layer comprises magnetic powder, a resinous binder, polishing particles and a lubricating agent, characterized in that the polishing particles have a Mohs' scale of hardness of not less than 7 and an average particle size of 0.25 r to 0.75 r (r being the thickness (.mu.m) of the magnetic layer) and the lubricating agent is a fatty acid ester having a melting point of not higher than 10.degree. C.
公开/授权文献
- US6097185A Magnetic resonance imaging apparatus 公开/授权日:2000-08-01