Slider air bearing design and method providing writing of a laser field (WOLF) measurement without substantial fly height affect
US6477013B1 · kind B1 · utility
19Cited by
14References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/954
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A slider air bearing design and method providing “writing of laser field” (WOLF) measurement without substantial fly height affect. A central pad at ion-mill height is formed in the cavity between the side rails and rear pad. The central pad allows correlation of WOLF crown measurement values with crown measurements obtain via optical interferometer. Also, the central pad provides good reflective areas while preventing degradation in fly height performance due to the rear pad geometry constraints required by the WOLF measurement process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.