Perpendicular recording head with shaped pole surfaces for higher linear data densities
US7869160B1 · kind B1 · utility
170Cited by
18References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2005 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | May 26, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular recording head is provided having a bottom pole, a writer pole disposed above the bottom pole, and a top shield disposed above the writer pole. The bottom pole and the top shield are both magnetically coupled to the writer pole. The writer pole includes a concave facing surface that faces the top shield. The top shield can include a convex surface that faces the writer pole. The top shield can also include a pedestal that protrudes towards the writer pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.