Disc cartridge having positive isolation means when in storage

Details Disc cartridge having positive isolation means when in storage Disc cartridge having positive isolation means when in storage

1985-09-10

1987-09-08

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record medium

In container

360135, 360 97, G11B 2302, G11B 1900

Patent

active

046928316

ABSTRACT:
An improved disc cartridge (1) is disclosed, which comprises a case assembly (4) and an information recording disc (5) flatly rotatably housed in the case assembly. A disc holding mechanism is arranged in the disc cartridge in such a manner that when the disc cartridge is not in use, the mechanism holds the disc keeping the same away from the inner periphery of the case assembly, and when the disc cartridge is in use, the mechanism releases the disc completely for free rotation of the same.

REFERENCES:
patent: 4078246 (1978-03-01), Berthoux et al.
patent: 4185308 (1980-01-01), Fujioka
patent: 4458282 (1984-07-01), Mui et al.
patent: 4459628 (1984-07-01), Barton
patent: 4571718 (1986-02-01), Cahill et al.
patent: 4608617 (1986-08-01), Oishi et al.

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