Process of manufacturing a magnetic head
US5208971A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | May 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of making a magnetic head wherein a metal material is sandwiched between non-magnetic substrates, including the steps of: forming a magnetic metal material at least on one side of a non-magnetic substrate; forming by sputtering a crystallization glass layer at least on one side of a compound substrate prepared by forming an anti-diffusion film on the magnetic metal material; then heat-treating in an oxygen containing atmosphere the compound substrate on which the crystallization glass has been formed; further laminating together a number of the aforesaid compound substrates under pressure and then processing (such as by cutting, grinding, and heat-treating) the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.