Thin film magnetic head having good low frequency response
US4399479A · kind A · utility
12Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1981 |
| Grant date | Aug 16, 1983 |
| Priority date | — |
| Expiry date | Feb 4, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49055
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To provide a thin film magnetic head having good low frequency response, the invention teaches the use of a movable mask technique whereby a first deposited magnetic film is provided with a tapered, or knife-, edge. Gap spacer material is then deposited on the film knife-edge. Thereafter, a second magnetic film is deposited atop the knife-edge, as well as on the same substrate that supports the first magnetic film. What results, therefore, is a slant gap thin film magnetic head having good low frequency response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.