Method and tool for measurement of roll static attitude of sliders in a magnetic recording head stack assembly
US6466257B1 · kind B1 · utility
9Cited by
9References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 1, 1999 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and tool for measurement of the roll static attitude and y-misalignment of magnetic recording sliders within the head stack assembly having reference elements placed on the deposited end of the magnetic recording slider, which are optically analyzed by a video camera connected to a computer. For fast measurement the head stack assembly is clamped in a fixture mounted on motorized stages, which move each slider into the measurement position. In a two step imaging and analyzing process, the orientation and location of one or more edges of the reference element are computed and compared with known control parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.