Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing
US6504675B1 · kind B1 · utility
162Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Feb 15, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1871
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A writer for perpendicular recording on bilayer media with suppressed skew angle effect on the width of the recorded track is disclosed. The writer has a wide and flat trailing edge and a narrow leading edge. In a preferred embodiment, the pole has a trapezoidal cross-section. To suppress the skew effect on the width of the recorded track, the slope angle of the pole sides may be greater than the maximum skew angle in a drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.