Magnetic recording and reproducing apparatus with device for tra

Details Magnetic recording and reproducing apparatus with device for tra Magnetic recording and reproducing apparatus with device for tra

1980-08-18

1982-12-21

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 77, G11B 2118, G11B 2110, G11B 552

Patent

active

043652794

ABSTRACT:
A magnetic recording and reproducing apparatus comprised a rotary swinging member provided integrally with a pair of arcuate yoke parts at positions opposed in a diametral direction of a rotating plane of the rotary swinging member about a rotation center thereof permanent magnets respectively fixed to the pair of yoke parts in a state where their opposite polarities are opposed a pair of rotary magnetic heads supported on the rotary swinging member at positions opposed in a diametral direction of a rotating plane of the rotary swinging member about a rotation center thereof in a state where tips of the heads projecting outwards from outer surface of the yoke parts a fulcrum member for supporting the rotary swinging member in a freely swinging manner and acting as a fulcrum for swinging in a direction perpendicular, at a rotation center, to a line connecting the pair of rotary magnetic heads and a control coil of cylindrical shape disposed at a position where the control coil exists in a magnetic field formed by the permanent magnet rotating with the rotary swinging member. The control coil is supplied with a control signal. The rotary swinging member swings in response to the control signal with the fulcrum member as a fulcrum for swinging.

REFERENCES:
patent: 2751439 (1956-06-01), Burton
patent: 3995317 (1976-11-01), Schmidt
patent: 4131924 (1978-12-01), Behr et al.
patent: 4178606 (1979-12-01), Hirota
patent: 4184181 (1980-01-01), Mijatovic
patent: 4189758 (1980-02-01), Morio et al.
patent: 4236185 (1980-11-01), Obremski

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