Magnetic head slider having optimized ratio of negative pressure bearing to a front or center step bearing
US6842309B2 · kind B2 · utility
1Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Aug 27, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head slider, for sliding on a magnetic disk, which comprises a leading edge, a trailing edge, an air bearing surface having a front step bearing of submicron depth made from the leading edge, and a rail surface made from the front step bearing. A negative pressure recess, which is more profound than the front step bearing, is made from the rail surface, and a side step bearing with a depth identical to that of the front step bearing is made from the rail surface, wherein the ratio of depth R of the recess and depth δs of the front step bearing is R/δs≧5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.