Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1982-11-09
1986-10-28
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360105, 360 97, 310 36, G11B 555, G11B 2108, H02K 3300, H02K 3500
Patent
active
046202528
ABSTRACT:
An actuator for a magnetic disk drive includes a planar coil which is symmetrical with respect to the center of rotation and has substantially straight active sections extending from the center of rotation on opposite sides of the center of rotation. Four permanent magnets provide a magnetic field. When current is applied to the planar coil, magnetic forces rotate the coil, and an attached actuator arm, about the center of rotation. The symmetrical coil sections eliminate or reduce torsional forces thereby avoiding vibration, improving bearing life and reducing potential servo loop instability.
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Bauck Randall C.
Kleczkowski Peter S.
Garcia Alfonso
Iomega Corporation
Wolff John H.
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