| 发明名称 |
MAGNETIC RECORDING MEDIUM, ITS MANUFACTURING METHOD, MARKING DEVICE, AND MAGNETIC RECORDING/REPRODUCING DEVICE |
| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily and accurately executing marking on a magnetic recording medium after film formation. SOLUTION: On the surface of a magnetic recording medium 6 having at least a magnetic film formed on a substrate, plural projected structures are formed by laser beam irradiation and, by these projected structures, a marking 7 is formed to be visually identified.
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| 申请公布号 |
JP2001283430(A) |
申请公布日期 |
2001.10.12 |
| 申请号 |
JP20000098268 |
申请日期 |
2000.03.31 |
| 申请人 |
SHOWA DENKO KK |
发明人 |
OSAWA HIROSHI |
| 分类号 |
G11B5/82;G11B5/84;G11B23/40;(IPC1-7):G11B5/82 |
主分类号 |
G11B5/82 |
| 代理机构 |
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