Method of manufacturing a magnetic head having a relatively large air-gap and a good resistance to mechanical wear
US4017966A · kind A · utility
3Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1975 |
| Grant date | Apr 19, 1977 |
| Priority date | — |
| Expiry date | Aug 22, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a magnetic head, with a relatively large gap for reading, for instance, magnetic cards, and having a good resistance to mechanical wear, is provided. The head comprises two members with flat and parallel faces, made of a spinel ferrite having a high Curie temperature, encompassing a layer of non magnetic ferrite, 10 to 50 micrometers in thickness, deposited by silk-screen printing on one or both of the mutually opposite flat faces. The assembly is then bonded by sintering under pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.