Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1988-10-19
1991-04-30
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
300 7812, G11B 2108
Patent
active
050123726
ABSTRACT:
An access mechanism includes a fixed generating section for generating a first magnetic field, and a carriage, having at least one head, for generating a second magnetic field so as to be moved together with the head in accordance with a propulsive force generated by interaction between the first and second magnetic fields. The center of gravity of the carriage is substantially located on a line along which the propulsive force acts. The carriage includes a coil for generating the second magnetic field in accordance with a supplied current. The generating section and the coil constitute a voice coil motor. The access mechanism further includes a rail member arranged in a moving direction of the carriage, and a base member, coupled to the carriage and movably engaged with the rail member through bearings, for guiding movement of the carriage driven by the voice coil motor.
REFERENCES:
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patent: 4414594 (1983-11-01), Farmer et al.
patent: 4415941 (1983-11-01), Gibeau et al.
patent: 4462054 (1984-07-01), Dong et al.
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patent: 4745503 (1988-05-01), Muraoka et al.
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IBM/TDB vol. 12, No. 12, May 1970 p. 2273 "High Force Constant Voice Coil Motor for Rapid Seek" by Rexford.
Isomura Akihiro
Sugaya Toshihiro
Kabushiki Kaisha Toshiba
Wolff John H.
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