Magneto-optical disk hub in which the inner peripheral edge port

Details Magneto-optical disk hub in which the inner peripheral edge port Magneto-optical disk hub in which the inner peripheral edge port

1994-01-05

1995-08-01

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

369271, 360135, G11B 2300, G11B 1702

Patent

active

054385644

ABSTRACT:
An optical disc equipped with a hub having a centering hole into which a spindle shaft of a disc driving mechanism is inserted, wherein a centering hole portion of the hub is provided with a centering hole reinforcing means made of a material excellent in abrasion resistance and smoothness or a member having a central hole is formed of a resin excellent in abrasion resistance and smoothness.

REFERENCES:
patent: 4660119 (1987-04-01), Kato et al.
patent: 4743994 (1988-05-01), Kato et al.
patent: 4827470 (1989-05-01), Odawara et al.
patent: 4829510 (1989-05-01), Takahashi
patent: 4866697 (1989-09-01), Yamaguchi et al.
patent: 4982399 (1991-01-01), Odawara et al.
patent: 4983439 (1991-01-01), Saito

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