Radial access mechanism for disk recording/playback apparatus

Details Radial access mechanism for disk recording/playback apparatus Radial access mechanism for disk recording/playback apparatus

1987-12-21

1988-10-04

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

74 8922, G11B 555

Patent

active

047759070

ABSTRACT:
A radial access mechanism for translating, for example, the optical read/write head of an optical recording/playback apparatus relative to a rotating data storage disk to position such head adjacent a desired data track. Such mechanism basically comprises a stationary guide member defining a segment of a circular path, a roller having a head-supporting access arm rigidly coupled thereto, and means for causing the roller to roll, without slipping, on the inside of the circular path defined by the guide member. By virtue of its design, the mechanism inherently functions to translate the head along a hypotrochoidal trajectory.

REFERENCES:
patent: 3932045 (1976-01-01), Hillberry
patent: 4614989 (1986-09-01), Kaczeus

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