Magnetic head bar holding unit, lapping device, and method of lapping medium-opposing surface of thin-film magnetic head
US7086931B2 · kind B2 · utility
13Cited by
2References
4Claims
0Family size
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Key dates
| Filing date | Apr 13, 2004 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Dec 30, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49032
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The heaters in the respective thin-film magnetic head in the bar are electrically connected to its neighbors, and a variable resistor is connected to each of the heaters in parallel. The resistance of each of the variable resistors is varied depending on the amount that the medium-opposing surface (ABS) of the thin-film magnetic head is to project. Also, the medium-opposing surface of the thin-film magnetic head in the magnetic head bar is polished while energizing all the heaters by the same power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.