Extended metal in gap head
US4788612A · kind A · utility
5Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jul 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1878
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A read write head for magnetic recording on a magnetic media includes a core having a gap with confronting surfaces. To increase the magnetic saturation properties of the head, one of the confronting surfaces is covered with a layer of material having a higher magnetic permeability than the material making up the core. An additional surface of the core is also covered with the higher magnetic permeability material to prevent the flux lines from fringing into the atmosphere at the joint. The two layers of material form an integral layer of the second higher permeability magnetic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.