Magnetic head for perpendicular magnetic recording having a main pole and a shield
US8427781B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 8, 2012 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Aug 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head with a main pole is provided. The main pole has a bottom end including an inclined portion. A write shield has a first inclined surface opposed to the inclined portion and a second inclined surface that is located farther from a medium facing surface than is the first inclined surface. The first inclined surface has a first end located in the medium facing surface and a second end opposite thereto. The second inclined surface has a third end connected to the second end and a fourth end opposite thereto. The second inclined surface forms a greater angle than does the first inclined surface relative to a direction perpendicular to the medium facing surface. The distance between the main pole and an arbitrary point on the second inclined surface increases with decreasing distance between the arbitrary point and the fourth end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.