Method and apparatus to detect and mitigate contamination between a read/write head and a recording medium
US9542963B2 · kind B2 · utility
1Cited by
6References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 18, 2015 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Aug 4, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A first adaptive fly height measurement is performed between a read/write head and a recording medium during a stage of qualification testing of a magnetic disk drive. A second adaptive fly height measurement of the read/write head is performed during a subsequent stage of the qualification testing. In response to determining that a fly height decrease between the first and second adaptive fly height measurements is above a threshold value, a mitigation operation is performed to remove a contaminant from a media-facing surface of the read/write head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.