发明名称 |
Magnetic recording medium and method for producing the same |
摘要 |
A magnetic recording medium has a cobalt-based first magnetic layer and a cobalt-based second magnetic layer which are formed on a substrate of high polymer by vacuum evaporation. In order to have a high reproducing output and a high S/N ratio, the first magnetic layer has high oxygen density area which is arranged at a vicinity of the second magnetic layer, and the second magnetic layer has high oxygen density area which is arranged at a vicinity of the first magnetic layer.
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申请公布号 |
US5534324(A) |
申请公布日期 |
1996.07.09 |
申请号 |
US19930151704 |
申请日期 |
1993.11.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SUGITA, RYUJI;TOHMA, KIYOKAZU;ISHIDA, TATSUAKI;BAN, YASUAKI |
分类号 |
G11B5/64;G11B5/65;G11B5/66;G11B5/73;G11B5/738;G11B5/85;(IPC1-7):H01F1/00;G11B5/70 |
主分类号 |
G11B5/64 |
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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