Magnetic recording head having a plurality of shield layers
US7379276B2 · kind B2 · utility
6Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Sep 17, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | May 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1875
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers formed on the writing pole. Accordingly, magnetic fields generated inside and outside the magnetic recording head are prevented from concentrating on the return pole, and information is effectively written on and erased from an information recording media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.