Thin-film magnetic head with heating means for adjusting magnetic spacing
US7724471B2 · kind B2 · utility
2Cited by
6References
37Claims
0Family size
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Key dates
| Filing date | Nov 21, 2005 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Apr 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin-film magnetic head that the protrusion of the head end surface due to heat generated from the heating means becomes large enough to set the magnetic spacing dMS to the smaller value efficiently is provided. The head comprises: a substrate having an element-formed surface on which at least one concave portion is formed and an ABS; at least one magnetic head element formed above or on the element-formed surface; at least one thermal expansion layer embedded in the at least one concave portion; and at least one heating means positioned directly above the at least one thermal expansion layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.