Bias magnetic field moving apparatus for a photomagnetic recording apparatus
US5103435A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1989 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | May 18, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bias magnetic field moving apparatus for photomagnetic recording apparatus includes an arm rotatably provided in a photomagnetic recording apparatus so that one end side of the arm can approach and separate from a photomagnetic recording medium. An arm rotating mechanism rotates the arm so that one end side of the arm may approach and separate from the photomagnetic recording medium as operatively connected with the operation of loading and unloading the photomagnetic recording medium on the photomagnetic recording apparatus. A magnetic field applying member is rotatably connected to one end side of the arm, approaching and separating from the photomagnetic recording medium as operatively connected with the operation of loading and unloading the photomagnetic recording medium and applying a recording or erasing bias magnetic field to the photomagnetic recording medium. A maintaining mechanism maintains the magnetic field applying member to be parallel with the photomagnetic recording medium when the magnetic field applying member has separated the most from the photomagnetic recording medium. A fixing mechanism fixes the magnetic field applying member so as to be in a predetermin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.