Thin film magnetic head comprising a protective layer
US5130878A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Mar 7, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3106
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A regulating plate disposed opposite to a magnetic head with respect to a rotary flexible magnetic disk and in sliding contact with the flexible magnetic disk, having protruding portions provided on the regulating plate at upstream and downstream sides of the magnetic head, top portions of the protruding portions being formed to flat surfaces, thereby obtaining stable sliding contact of the magnetic head with the flexible magnetic disk from the beginning, and a thin film magnetic head comprised at least of a magnetic layer, a coil conductor layer, and an insulative layer formed on a substrate, and a protective layer stacked on the magnetic layer, characterized in that the protective layer comprises MgO, SiO.sub.2, and Al.sub.2 O.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.