Method for the fabrication of a magnetic recording/reading head from a magnetic substrate
US4939836A · kind A · utility
4Cited by
2References
7Claims
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 primaryY10T29/49066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for fabricating magnetic recording/reading heads. A substrate made of magnetic material is provided with a groove of a predetermined width. The surface of the substrate bearing the groove becomes the active face for the magnetic head. The face of the substrate having the groove is ground, and then filled with a non-magnetic material to form a gap. The filling causes the non-magnetic material to jut out of the groove. The material which juts out is ground off until the level of the substance is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.