Method for achieving the planar surface of an active face for a magnetic recording/reading head
US4939835A · kind A · utility
6Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for achieving the planar surface of an active face for magnetic recording/reading heads. The planar surface of the active face is obtained by grinding, the active face being of the type where, before the grinding operation, the level of the material forming the gap is recessed with respect to the magnetic poles, the method comprising depositing over the recess a thin layer of non-magnetic material with a thickness at least equal to the recess of the gap. The non-magnetive thin layer may then be ground to obtain the planar surface of the active face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.