Shaped trailing shield of a perpendicular recording write element
US7821736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2006 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Apr 3, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of a separation from the trailing side of the write pole than track edge portions of the leading side of the trailing shield. An exemplary shape the leading side of the trailing shield may be a convex shape when viewed from the ABS. The shape of the leading side of the trailing shield causes the trailing shield to shunt less of the magnetic field from the trailing side of the write pole at the track edges so that the written transition at the track edge will not lag behind the written transition at the track center allowing for a straighter transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.