Thin-film magnetic head
US7365942B2 · kind B2 · utility
10Cited by
7References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 22, 2005 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | May 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin-film magnetic head for perpendicular magnetic recording comprises a coil, a main magnetic pole layer for performing perpendicular recording, a write shield layer and a write gap layer, wherein the main magnetic pole layer comprises a main pole film portion and a yoke pole film portion. The write shield layer has a first shield film portion for determining a throat height, and the thickness of the first shield layer is smaller than the thickness of the yoke pole film portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.