Process for producing read and/or write heads for magnetic recording
US5250150A · kind A · utility
12Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Process for producing red and/or write heads for magnetic recording. According to the invention, use is made of a monocrystalline substrate (16), which is anisotropically etched in accordance with a crystallographic plane in order to give the gap (48) its precise direction (straight or inclined). The substrate also undergoes thermal oxidation to give the gap a given thickness. Application to heads for video recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.