Combined write/active fly control for heat assisted magnetic recording in a reader over writer application
US9842618B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jul 8, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a slider of a heat-assisted magnetic recording head. The slider comprises an air bearing surface, a substrate, and a plurality of electrical bond pads coupled to bias sources. A writer is positioned proximate the substrate. The writer comprises write coils coupled between first and second bond pads. At least one heater is coupled between the first and second bond pads. The at least one heater is disposed within the writer and is configured to thermally actuate the air bearing surface of the writer. A reader is disposed on the slider such that the writer is between the substrate and the reader. Write induced protrusion of the air bearing surface of the writer is moderated by stiffness of the substrate proximate the writer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.