发明名称 |
Magnetic medium comprising a substrate having pits and grooves of specific shapes and depths |
摘要 |
A magnetic medium comprising a substrate formed with a stepped pit and a magnetic substance buried in the stepped pit. A method of manufacturing a magnetic medium comprising the steps of forming a first groove in a substrate by photoetching, forming a second groove in the first groove or in a portion adjacent to the first groove by the photoetching, the second groove being different in depth from the first groove, and burying magnetic substances into the first and second grooves.
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申请公布号 |
US5350618(A) |
申请公布日期 |
1994.09.27 |
申请号 |
US19920842057 |
申请日期 |
1992.02.26 |
申请人 |
TEIJIN SEIKI CO., LTD. |
发明人 |
TOGAWA, MASAYUKI;TOYAMA, KIYOSHI |
分类号 |
G01D5/14;H01F1/00;H01F10/08;H01F10/28;H01F41/16;H01F41/34;H02K15/03;H02K57/00;(IPC1-7):B32B3/00 |
主分类号 |
G01D5/14 |
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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