Thin film magnetic head including a first pole portion having a depressed portion for receiving a coil
US6466415B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Sep 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a thin film magnetic head including a first pole portion having depressed portion that is formed therein. The depressed portion descends, backward within the first pole portion, at a first inclination angle &thgr;1 from a first inclination starting point P1. Then, an insulating film is filled up in the depressed portion so that it can be located up to the upper side of the surface of the first pole and have an inclined surface in the side of a medium opposing surface. Additionally, a first magnetic film of a second pole portion can have a larger saturated magnetic flux density than a second magnetic film of the second pole portion, and can include an inclined portion with a second inclination angle &thgr;2 from a second inclination starting point P2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.