Method of positioning disk-shaped medium

Details Method of positioning disk-shaped medium Method of positioning disk-shaped medium

2007-12-04

2007-12-04

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

C360S071000, C360S098010, C029S603030

Reexamination Certificate

active

10646224

ABSTRACT:
The method of positioning a disk-shaped medium is capable of precisely positioning the center of the disk-shape medium with respect to a center of a rotary shaft. The method comprises the steps of: inserting a cylindrical hub into a center hole of the disk-shaped medium; and covering a hub adaptor, which is eccentrically fixed to a rotary shaft, with the hub so as to position the disk-shaped medium on the rotary shaft. Directions of eccentricity of the disk-shaped medium, the hub and a hub unit are defined on the basis of amount of eccentricity between the disk-shaped medium and the hub, that between the hub and the hub adaptor and that between the hub adaptor and the rotary shaft.

REFERENCES:
patent: 6655244 (2003-12-01), Shiraishi et al.
patent: 2004/0095669 (2004-05-01), Yoo et al.
patent: 2004/0194291 (2004-10-01), Pfeiffer et al.
patent: 2006/0066994 (2006-03-01), Suzuki et al.
patent: 7-220385 (1995-08-01), None
patent: 10-255362 (1998-09-01), None

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