Apparatus for writing on, and/or reading, magnetic discs

Details Apparatus for writing on, and/or reading, magnetic discs Apparatus for writing on, and/or reading, magnetic discs

1974-11-20

1977-05-17

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360106, 360130, G11B 5016, G11B 555, G11B 2110

Patent

active

040245810

ABSTRACT:
The apparatus is used for writing on and/or reading two magnetic discs of flexible type each one contained for rotation in a protective cover provided with transducer apertures. The apparatus comprises two insertion devices on which the protective covers of the discs are inserted in manner that the discs lie substantially in two parallel planes, having the corresponding magnetizable surfaces oppositely faced therebetween. The insertion devices through corresponding counter-mandrels, causes the discs to engage a pair of driving mandrels for the rotation of the two discs. The driving mandrels and the discs are rotated in opposite senses and, between the two discs, are disposed two transducers which are jointly positioned with respect to the magnetizable surfaces of the discs along the transducer apertures.

REFERENCES:
patent: 3678481 (1972-07-01), Dalziel et al.
patent: 3684299 (1972-08-01), Clark
patent: 3725883 (1973-04-01), Bennett et al.
patent: 3913137 (1975-10-01), Morgan

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