Hard disk balancing apparatus and method for hard disk drive

Details Hard disk balancing apparatus and method for hard disk drive Hard disk balancing apparatus and method for hard disk drive

2005-12-06

2005-12-06

Williams, Hezron (Department: 2856)

Metal working

Method of mechanical manufacture

Electrical device making

C029S737000, C033S644000, C073S066000, C360S098080

Reexamination Certificate

active

06971154

ABSTRACT:
A hard disk balancing apparatus for a hard disk drive including an eccentricity detection unit to detect an eccentricity amount and an eccentricity position of the hard disk with respect to a rotation axis of a spindle motor for rotating the hard disk as an origin, and a pushing unit to push a circumference of the hard disk in the eccentricity position and to move the hard disk on the rotation axis of the spindle motor according to the eccentricity amount. Here, the eccentricity detection unit includes a detection sensor to detect the rotation axis of the spindle motor, and is placed coaxially with the rotation axis of the spindle motor, and at least three distance sensors that are separated from the detection sensor to be at least farther than a radius of the hard disk and to measure a distance between one point on the outer circumference of the hard disk and themselves.

REFERENCES:
patent: 4563824 (1986-01-01), Baun
patent: 4933927 (1990-06-01), Ross
patent: 5043973 (1991-08-01), Ocheltree et al.
patent: 6158112 (2000-12-01), Kim et al.
patent: 6189371 (2001-02-01), Hirano
patent: 6421199 (2002-07-01), McKenzie et al.
patent: 6453541 (2002-09-01), Guthrie et al.
patent: 6651311 (2003-11-01), Kim et al.
patent: 6698286 (2004-03-01), Little et al.
patent: 6771451 (2004-08-01), Morris et al.
patent: 6839956 (2005-01-01), Watanabe et al.
patent: 6895656 (2005-05-01), Yoshida
patent: 2003/0192166 (2003-10-01), Kelemen
patent: 9-128882 (1997-05-01), None
Notice of Office Action issued by Korean Patent Office on Nov. 23, 2004 and English translation thereof.

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