Recording disc assembly

Details Recording disc assembly Recording disc assembly

1988-10-31

1989-09-19

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 582

Patent

active

048687014

ABSTRACT:
In a recording disc assembly comprising a recording disc, a hub made of plastic resin material, having a pair of reference surfaces formed on the inner surface of a rotational shaft insertion hole for positioning the disc assembly in a recording device by engagement of a rotational shaft of the recording device and a supporting plate made of metal integrally formed with the hub, the supporting plate is provided with at least a stepped portion near the reference surfaces so as to assure good accuracy of the flat plane of the reference surfaces when the hub is molded.

REFERENCES:
patent: 4590532 (1986-05-01), Saito
patent: 4599663 (1986-07-01), Saito et al.
patent: 4616278 (1986-10-01), Yamaguchi et al.
patent: 4630156 (1986-12-01), Saito

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