Head carriage moving mechanism of disk recording reproducing dev

Details Head carriage moving mechanism of disk recording reproducing dev Head carriage moving mechanism of disk recording reproducing dev

1985-06-19

1987-10-13

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

74 8915, 360109, G11B 555, G11B 2108

Patent

active

047002514

ABSTRACT:
A disk recording-reproducing device having a carriage with a read/write head, a screw shaft to shift the carriage with an engaging element through coupling between a spiral groove of the screw shaft and the engaging element, and a stepping motor to rotate the screw shaft. The spiral groove is composed of a number of groove portions each with a straight bottom whose angle of lead is substantially zero degree that are displaced successively, circumferentially and axially. Preferably, the screw shaft has plane portions for its positioning, and a rotor of the stepping motor has magnetization points being set correspondingly to the lines of the groove portions.

REFERENCES:
patent: 4096537 (1978-06-01), Butsh
patent: 4131923 (1978-12-01), Wachs et al.
patent: 4383283 (1983-05-01), Machut
patent: 4422113 (1983-12-01), Mabon
patent: 4524400 (1985-06-01), Cantwell

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