Methods for manufacturing electronic lapping guides for writer heads that closely track pole formation of the writer heads
US9082426B1 · kind B1 · utility
1Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jan 21, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods for manufacturing electronic lapping guides (ELGs) for writer heads that closely track the pole formation of the writer heads are provided. Once such method includes forming an ELG adjacent to a writer head that is subjected to substantially all of the sub-processing actions associated with the pole formation of the writer head, lapping the pole material, measuring a resistance of the ELG during the lapping, comparing the measured resistance with a target resistance, and terminating the lapping based on the comparison of the measured resistance with the target resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.