Apparatus using disc-shaped record bearing medium

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record

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360 99, 369 48, 369 58, G11B 5012

Patent

active

047179767

ABSTRACT:
An apparatus using a disc-shaped record bearing medium having an engaging portion and at least one rotation indication portion, including a rotation mechanism for rotating the medium, a pressing device for mounting the medium on the rotation mechanism at the engaging portion, and a detection mechanism provided on a portion of the pressing device for detecting the rotation indication portion of the medium.

REFERENCES:
patent: 3890643 (1975-06-01), Dalziel
patent: 4040107 (1977-08-01), Bryer
patent: 4599663 (1986-07-01), Saito

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