Disk apparatus with voice coil motor

Details Disk apparatus with voice coil motor Disk apparatus with voice coil motor

1997-02-18

1999-10-05

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 555

Patent

active

059633980

ABSTRACT:
A disk apparatus has an actuator supporting a head and a motor for rotating the actuator. The motor has a flat movable coil supported by the actuator and a pair of permanent magnets supported by a pair of yokes. The coil moves in a space defined between the permanent magnets. The yokes are fixed to each other by an adsorption by the permanent magnets. An inner edge of the coils overlaps an outer edge of the permanent magnets.

REFERENCES:
patent: 3576454 (1971-04-01), Beach
patent: 4707754 (1987-11-01), Patel et al.
patent: 4980787 (1990-12-01), Iwanaga
patent: 5109521 (1992-04-01), Culley
patent: 5130873 (1992-07-01), Yumura et al.
patent: 5373513 (1994-12-01), Howe et al.
patent: 5381281 (1995-01-01), Shrinkle et al.
patent: 5465034 (1995-11-01), Andrews, Jr. et al.
patent: 5576583 (1996-11-01), Umehara

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