发明名称 |
Magnetic disk evaluation apparatus and method |
摘要 |
A magnetic-disk evaluation apparatus includes a magnetic head positioned relative to a magnetic disk including temporary servo signals. Fluctuation of a magnetic head in a seek direction is measured using a measurement device. A measuring rotating arm moves in tandem with a rotating stage holding a rotary positioner. The measurement device is on the measuring rotating arm. The rotary positioner is controlled on the basis of temporary servo signals to position the magnetic head on a circle, concentric from a center of a spindle motor. Fluctuation of the magnetic head in the seek direction is measured to detect the displacement of the magnetic head and to determine whether the temporary servo signals are acceptable based upon the displacement and an outside standard.
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申请公布号 |
US2002018314(A1) |
申请公布日期 |
2002.02.14 |
申请号 |
US20010909465 |
申请日期 |
2001.07.19 |
申请人 |
TAKANO YUKIHIRO;SATO KIMINORI |
发明人 |
TAKANO YUKIHIRO;SATO KIMINORI |
分类号 |
G11B5/00;G11B5/55;G11B5/596;G11B5/84;G11B20/18;G11B21/10;(IPC1-7):G11B21/02 |
主分类号 |
G11B5/00 |
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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