发明名称 |
Magnetic recording medium and process for production thereof |
摘要 |
A magnetic recording medium comprising (a) a flexible substrate of a polymeric material, (b) a first magnetic layer of a ferromagnetic metal deposited on the substrate by an ionized cluster beam deposition method, and (c) a second magnetic layer of a ferromagnetic metal deposited on the first magnetic layer by a high-vacuum ion plating deposition method, and a process for producing a magnetic recording medium which comprises imparting a kinetic energy in the range of 100 eV to 10 KeV to an ionized cluster composed of ferromagnetic metal atoms in a high vacuum corresponding to a pressure of 8x10-4 to 1x10-10 torr and impinging the resulting ionized cluster beam against a flexible substrate of a polymeric material to deposit a first magnetic layer of the ferromagnetic metal on the substrate, and imparting a kinetic energy in the range of 1 eV to 10 KeV to atom ions of a ferromagnetic metal by an ion plating method in a high vacuum corresponding to a pressure of 8x10-4 to 1x10-10 torr, and impinging the resulting atom ion beam against the first magnetic layer to deposit a second magnetic layer of the ferromagnetic metal on the first magnetic layer.
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申请公布号 |
US4395465(A) |
申请公布日期 |
1983.07.26 |
申请号 |
US19810290966 |
申请日期 |
1981.08.07 |
申请人 |
SEKISUI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
TAKAGI, TOSHINORI;NAKATA, SHINSAKU;MIKAMI, YOICHI;HOTTA, MASAHIRO;FUKUMOTO, YOSHIYUKI |
分类号 |
G11B5/66;G11B5/64;G11B5/85;G11B5/851;H01F41/14;H01F41/20;(IPC1-7):C23C15/00 |
主分类号 |
G11B5/66 |
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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