Composite thin film transducer head
US4589042A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1983 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Jun 27, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3143
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A film type magnetic transducer head has a yoke formed partially of high permeability material which provides enhanced read capabilities and partially of high saturation magnetization material to obtain the write function benefits associated therewith. The high saturation magnetization material is used in the pole tip region and extends to a location beyond the point of initial saturation and does not extend to a position at which the first coil winding is embraced to prevent or minimize coupling with the windings. With the balance of the joke of high permeability material, the transducer functions substantially as a wholly high saturation magnetization yoke in the write function and as a wholly high permeability material yoke for read purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.