Magnetic disk apparatus

Details Magnetic disk apparatus Magnetic disk apparatus

1994-12-23

1997-06-03

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9701, G11B 554

Patent

active

056360916

ABSTRACT:
A hard disk drive includes a casing and a cover closing a top opening of the casing. In the casing are arranged a magnetic disk, magnetic heads for recording and reproducing information on and from the disk, a carriage supporting the magnetic heads, and a voice coil motor having a magnet, for driving the carriage. The cover is formed of a material with a high magnetic permeability and constitutes a magnetically permeable section which faces the magnet and allows a magnetic flux from the magnet to flow in the permeable section.

REFERENCES:
patent: 4553183 (1985-11-01), Brown et al.
patent: 4725904 (1988-02-01), Dalziel
patent: 5124856 (1992-06-01), Brown et al.
patent: 5138506 (1992-08-01), Beck et al.
patent: 5270887 (1993-12-01), Edwards et al.
patent: 5315464 (1994-05-01), Tsujino

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