Method and apparatus for permanent magnet erasure of magnetic storage media
US7701656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2006 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Sep 8, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/0245
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A permanent magnet degausser includes at least one magnetic field generator comprising magnetic elements arranged near a media conveyance path and a conveyor for transporting magnetic media through a magnetic media conveyance path. A passive belt or protector plate may be provided to assist the passage of the magnetic media through the applied magnetic field. The conveyor may be a continuous motion conveyor belt including cleats for holding the magnetic media or a reciprocal media conveyor including magnetic storage media bin. The magnetic field generator may include permanent magnets of varying intrinsic coercivities and/or remanences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.