Method for making a thin film magnetic head having a protective coating
US5271802A · kind A · utility
38Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Dec 7, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for making a magnetic head slider having a protective coating on the rails thereof, the protective coating containing a thin adhesion layer, a thin layer of amorphous hydrogenated carbon, and a thin masking layer. The protective coating is deposited on the air bearing surface of the slider after the thin film magnetic heads are lapped to a chosen dimension, but before the pattern of rails is produced on the air bearing surface. The protective coating protects the magnetic head during the rail fabrication process and in usage in a magnetic recording system protects the magnetic head from wear and corrosion damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.