Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, magnetic disk drive apparatus with head gimbal assembly, method for designing thin-film magnetic head and manufacturing method of thin-film magnetic head
US7283328B2 · kind B2 · utility
1Cited by
7References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 26, 2005 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Jun 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin-film magnetic head includes at least one inductive write head element and at least one read magnetic head element, capable of controlling a spacing between a magnetic recording medium and the at least one magnetic read head element by heating. A gain SG (nm/° C.) of the spacing is greater than a spacing gain threshold SGTHLD (nm/° C.) defined by the following expression:SGLIMT=A*dPTP+B
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.