Thin film magnetic head
US4516180A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1982 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | May 14, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/31
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head comprises an upper magnetic film and a lower magnetic film which cooperate to constitute a magnetic circuit including a magnetic gap, and a coil conductor film constituting a coil having a predetermined number of turns and extending between the upper and the lower magnetic films to intersect the magnetic circuit. The upper magnetic film is composed of a laminate constituted by magnetic thin film layers and non-magnetic thin film layers stacked alternately with each other. An electrically insulating layer formed of a photo-sensitive resin is interposed between the upper magnetic film and the coil conductor film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.