发明名称 |
Magnetic recording medium. |
摘要 |
<p>A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer which comprises magnetic powder, a binder and alumina powder having an average primary particle size of not larger than 0.3 mu m and containing at least one oxide selected from the group consisting of oxides of silicon, magnesium, lanthanum and zirconium in an amount of 0.05 to 5 parts by weight per 100 parts by weight of alumina, which medium has improved durability, abrasion resistance and surface smoothness of a magnetic layer and good cleaning effect on a magnetic head.</p> |
申请公布号 |
EP0408903(A2) |
申请公布日期 |
1991.01.23 |
申请号 |
EP19900111447 |
申请日期 |
1990.06.18 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
UMEZAKI, HIROSHI;TAKEUCHI, YOSHIAKI |
分类号 |
C01F7/36;C09D5/23;C09D127/04;C09D127/06;C09D175/00;C09D175/04;G11B5/708;G11B5/73 |
主分类号 |
C01F7/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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