Optical disk drive

Details Optical disk drive Optical disk drive

1987-02-13

1989-04-18

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

360106, 369219, 369221, 369224, 369249, G11B 338, G11B 2110

Patent

active

048233366

ABSTRACT:
An optical disk drive includes an optical disk, a pair of guide shafts, a carriage having an optical pick-up movable in the radial direction of the disk as guided by the guide shafts. A plurality of rollers are rotatably mounted on the carriage so that a rolling contact is provided between the guide shafts and the carriage. Preferably, one of the rollers is pressed against the associated guide shaft so as to absorb any play which may exist in the rollers. Each of the guide shafts is so structured to define a part of a closed magnetic flux circuit, and each of a pair of coils fixedly mounted on the carriage is loosely fitted on this part of the associated guide shaft. As a result, a pair of linear motors is defined on both sides of the carriage using the pair of guide shafts to define a pair of closed magnetic flux circuits partly.

REFERENCES:
patent: 3993316 (1976-11-01), Fairbanks
patent: 4150833 (1979-04-01), Yamamura
patent: 4322840 (1982-03-01), Kusaka
patent: 4613962 (1986-09-01), Inoue et al.
patent: 4698798 (1987-01-01), Faber et al.

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