Perpendicular recording head including concave tip
US6771462B1 · kind B1 · utility
9Cited by
35References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2000 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Mar 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A perpendicular recording head for use with magnetic recording media includes a main pole having a concave tip. The concave tip focuses the magnetic flux from the main pole onto a smaller area of the magnetic recording medium than a conventional main pole when the main pole is at its flying height from the magnetic recording medium. Although the most preferred perpendicular recording head includes a concave cavity having an elliptical profile when viewed from the side, any substantially concave cavity may be used advantageously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.