Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1996-01-03
1997-09-23
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 554
Patent
active
056711042
ABSTRACT:
A disk drive comprises a disk recording medium; an actuator traveling on the surface of the disk recording medium; a lock device vertically movable for locking the actuator when located upward or for releasing the actuator when located downward, composed of an elastic plate spring; a first magnetic-field supply for latching the lock device to the lower position by the action of a first magnetic force; a second magnetic-field supply for latching the lock device to the upper position by the action of a second magnetic force; and a lock device motor to move the lock device to the upper position when a first current supplied or as to move the lock device to the lower position when the second current different from the first current is supplied.
REFERENCES:
patent: 4881139 (1989-11-01), Hasebrouck
patent: 5448435 (1995-09-01), Nakazawa
patent: 5495376 (1996-02-01), Wasson
patent: 5523910 (1996-06-01), Alten
patent: 5528437 (1996-06-01), Mastache
Matsuda Hiroshi
Takahashi Keishi
Takahashi Kohji
Heinz A. J.
International Business Machines - Corporation
Krall Noreen A.
Millett Douglas R.
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