Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1994-01-31
1995-01-03
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360106, 360 7712, 360 7802, G11B 5584, G11B 555, G11B 2108
Patent
active
053791703
ABSTRACT:
A mechanism for accurately positioning a recording/playback head on the center of a track including a stepper motor and coil assembly in combination controlling coarse and fine transverse head position. The coil is attached to a pivoting actuator arm which provides a mounting member for a recording/playback head. A torsion spring is attached to the actuator arm and to a stage which is driven by a stepper motor lead screw to incrementally position the actuator arm. The coil assembly includes a coil bundle juxtaposed between at least two sets of split magnets. The coil assembly operates to pivot the recording/playback head transversely, thereby providing fine position control.
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Japanese Patent Abstract No. JP-A-22 49 119, Dec. 1990.
Dennis II Charles L.
Griswold Gary L.
Heinz A. J.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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