Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films
US5590008A · kind A · utility
38Cited by
16References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3116
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disc unit has a thin film magnetic head in which a lower magnetic core and an upper magnetic core form a magnetic circuit. The upper magnetic core is constructed by magnetic films having at least two layers. A saturation magnetic flux density of the inside magnetic film, of the magnetic films having at least two layers, facing a magnetic gap of the magnetic circuit is larger than that of the outside magnetic films of the upper magnetic core and the lower magnetic core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.