发明名称 |
System, method, and apparatus for glide head calibration with enhanced PZT channel for very low qualification glide heights |
摘要 |
A glide head calibration technique uses two fly height calibrations on a disk media certifier. The first calibration point uses a spin down on bump technique at a first height, and the second calibration point uses a spin down on disk media roughness at a second lower height. With two height data points, a fly height curve of each glide head is approximated very accurately. Once the fly height curve is derived for each head, any fly height can be dialed-in by the disk media certifier for glide testing. This technique achieves glide fly heights between about 4 nm and 8 nm and does so with improved tolerances.
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申请公布号 |
US7121133(B2) |
申请公布日期 |
2006.10.17 |
申请号 |
US20040857195 |
申请日期 |
2004.05.28 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
CHU NORMAN;DUAN SHANLIN;GALINDO PATRICIA;NGO HANG FAI;LO YU;ZHOU NALIN |
分类号 |
G01B7/34;G01B7/14;G01B11/14;G01B11/30;G11B5/455;G11B5/60 |
主分类号 |
G01B7/34 |
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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