发明名称 |
Magnetic recording and reproduction method |
摘要 |
A magnetic recording and reproduction method comprising recording or reproducing a track of a rotating magnetic disk by means of a magnetic head, wherein the magnetic disk comprises a support and a magnetic layer containing ferromagnetic powder and a binder; the track has a breadth of 2 mum or less; and a frictional force between the magnetic layer and the magnetic head at innermost peripheral area of a recording region of the magnetic disk is 30 mN or less, a frictional force between the magnetic layer and a magnetic head at outermost peripheral area of a recording region of the magnetic disk is 20 mN or less, and a ratio of the frictional force at the innermost peripheral area to the frictional force at the outermost peripheral area is from 1.0 to 4.0.
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申请公布号 |
US7092210(B2) |
申请公布日期 |
2006.08.15 |
申请号 |
US20040890090 |
申请日期 |
2004.07.14 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
NOGUCHI HITOSHI;MATSUMOTO AYAKO;SAITO SHINJI |
分类号 |
G11B5/82;G11B5/00;G11B5/012;G11B5/016;G11B5/58;G11B5/706 |
主分类号 |
G11B5/82 |
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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