发明名称 |
MAGNETIC RECORDING MEDIUM |
摘要 |
A magnetic recording medium in which a thin ferromagnetic film is formed over a strip or sheet of plastic film whose surface is formed with grain-, rumple- or worm-like nodules into which may be dispersed finely divided particles of the diameter ranging from 0.01 to 0.2 mu m. In the case of a thin ferromagnetic metal film type recording medium, steep protrusions of the height ranging from 100 to 2,000 ANGSTROM are distributed over the surface at the average density of 10<4> to 10<6> per mm<2>. |
申请公布号 |
EP0077549(B2) |
申请公布日期 |
1991.01.02 |
申请号 |
EP19820109567 |
申请日期 |
1982.10.15 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SUZUKI, TAKASHI;FUJIMORI, HIROSHI;ODAGIRI, MASARU |
分类号 |
G11B5/62;G11B5/73;G11B5/84;(IPC1-7):G11B5/62;G11B5/70;H01F10/26 |
主分类号 |
G11B5/62 |
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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