发明名称 |
Method of inspecting magnetic recording medium based on contact duration time |
摘要 |
A magnetic recording medium inspection method detects small protrusions that constitute defects on the surface of a magnetic recording medium. The method includes flying a glide inspection head at a predetermined height over the surface of the moving magnetic recording medium; detecting a contact duration time during which the glide head is in contact with a protrusion on the surface of the magnetic recording medium using a contact detection sensor attached to the glide inspection head; and determining the small protrusion based on the contact duration time.
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申请公布号 |
US7057385(B2) |
申请公布日期 |
2006.06.06 |
申请号 |
US20030386637 |
申请日期 |
2003.03.12 |
申请人 |
FUJITSU LIMITED |
发明人 |
YOKOHATA TORU;IMAMURA TAKAHIRO;FUJITA TOSHIYA;OCHIAI YOJIRO;OZEKI MASAHIRO;SATAKE NAOKI |
分类号 |
G01R33/12;G11B5/84;G11B5/00;G11B5/012;G11B5/60 |
主分类号 |
G01R33/12 |
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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