Magnetic disc apparatus having two flexible bending members of a

Details Magnetic disc apparatus having two flexible bending members of a Magnetic disc apparatus having two flexible bending members of a

1992-11-13

1994-06-28

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9701, 360105, G11B 554, G11B 2108

Patent

active

053252527

ABSTRACT:
A magnetic disc apparatus has a rocking type actuator driven in a rocking motion by the driving force of a VCM (voice coil motor). Two flexible bending members fixed to a rotor move in synchronization with the driving of the rocking type actuator. The respective flexible bending members are attached to two FPC (Flexible printed circuit sheet) fixing portions provided on the outer wall of the rotor and radially arranged with respect to the driving center of the rocking type actuator so as to have the bending portions bent in directions opposite to each other. The reaction forces of the flexible printed circuit sheets are then canceled out with respect to each other at all times, and hardly affect the driving of the actuator. Therefore, reserve power may be given to the VCM (voice coil motor) while an actuator having a favorable follow-up characteristic with respect to data tracks can be obtained.

REFERENCES:
patent: 4476404 (1984-10-01), Bygdnes
patent: 5055969 (1991-10-01), Putnam
patent: 5095396 (1992-03-01), Putnam et al.
patent: 5105321 (1992-04-01), Ohkita et al.
patent: 5161074 (1992-11-01), Forbord et al.
patent: 5172287 (1992-12-01), Ishida
patent: 5212679 (1993-05-01), Tohkairin

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