Disk recording and/or reproducing apparatus

Details Disk recording and/or reproducing apparatus Disk recording and/or reproducing apparatus

1992-02-20

1993-07-06

Pascal, Robert J.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1100, G11B 5127

Patent

active

052260240

ABSTRACT:
A disk recording and/or reproducing apparatus comprises external magnetic field generating means for applying an external magnetic field to a given area, of a rotating disk on which information signals are recorded; of a rotating disk; means for moving the external magnetic field generating means toward and away from the disk in response to commencing an operation of recording of the informational signals on the disk; and means for loading the disk on such a position where the informational signal can be recorded. The moving means moves the external magnetic field generating means toward the disk only when the loading operation of the disk by the loading means is completed. Accordingly, contact of the magnetic head with the disk while the disk is not rotated is prevented.

REFERENCES:
patent: 4651242 (1987-03-01), Hirano et al.
patent: 5027334 (1991-06-01), Yamanaka et al.
patent: 5077713 (1991-12-01), Takizawa et al.
patent: 5095470 (1992-03-01), Oka et al.
patent: 5122998 (1992-06-01), Mizuno et al.

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