Heat assisted magnetic recording with heat profile shaping
US7412143B2 · kind B2 · utility
51Cited by
22References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Jul 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transducer comprises a conductive pin and a waveguide for directing electromagnetic radiation onto the pin, wherein the pin is configured to create a rectangular flat top field distribution at a surface of a storage medium positioned adjacent to an end of the pin, leading to a flat top thermal profile within the storage medium. A second pin can be included in the transducer. Recording heads that include the transducer, disc drives that include the recording head, and a method of heating a portion of a storage medium that is performed by the recording head, are also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.