Non-contact laser-induced protrusion measurement apparatus and method
US9685182B1 · kind B1 · utility
12Cited by
12References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 10, 2015 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Dec 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are directed to providing relative movement between a slider configured for heat-assisted magnetic recording and a magnetic recording medium, and causing protrusion of a portion of an air bearing surface (ABS) of the slider in response to activating at least a laser source while maintaining spacing between the protrusion and the medium. A magnitude of at least a portion of the protrusion is measured while maintaining spacing between the protrusion and the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.