Magnetic heads for perpendicular recording with trapezoidal pole tips
US6809899B1 · kind B1 · utility
231Cited by
27References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2003 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Dec 31, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/934
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Electromagnetic transducers are disclosed having write poles with a leading edge that is smaller than a trailing edge, which can reduce erroneous writing for perpendicular recording systems. The write poles may have a trapezoidal shape when viewed from a direction of an associated medium. The write poles may be incorporated in heads or sliders that also contain read elements such as magnetoresistive sensors, and may be employed with information storage systems such as disk drives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.