Thin film magnetic head, head gimbal assembly, and magnetic recording device
US9082432B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2014 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin film magnetic head has a main magnetic pole layer; a first trailing shield that is positioned at the trailing side of the main magnetic pole layer, and that is close to the main magnetic pole layer; and a second trailing shield that is positioned at the trailing side of the first trailing shield, and that continues to the first trailing shield. An end surface of the second trailing shield positioned at the back side in the height direction has a first end side positioned at a medium opposing surface side, and a second end side positioned at the further back side in the height direction than the first end side, and at the trailing side closer than the first end side. An angle formed by a plane including the first end side and the second end side and a plane parallel to both the height direction and the track width direction is 30 degrees to 60 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.