Apparatus for positioning a reading-recording head on a disc

Details Apparatus for positioning a reading-recording head on a disc Apparatus for positioning a reading-recording head on a disc

1987-03-04

1988-12-13

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 555, G11B 2110

Patent

active

047915021

ABSTRACT:
A magnetic head is mounted on a carriage which is movable radially with respect to a disc. The carriage is slidable on two balls rolling in a groove in a guide pivoted to the base and pressed against the carriage by a spring. The carriage is moved by a drive roller which rolls against a track on the carriage opposite to the guide.
The roller is connected to the carriage by means of a flexible metal strip which is fixed to the roller at the center and to the carriage at its ends. The guide which is pivoted on the base makes it impossible automatically to take up clearances between the carriage and the guide. The carriage may be of very small dimensions and weight so that the reduced inertia of the carriage enhances the degree of precision of the movements of the head from one track on the magnetic disc to another.

REFERENCES:
patent: 3881189 (1975-04-01), Mayeda
patent: 4161004 (1979-07-01), Dalziel
patent: 4323939 (1982-04-01), Iftikar et al.
patent: 4672491 (1987-06-01), Koenig et al.

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