Method of manufacturing substrate for magnetic disk,...

Details Method of manufacturing substrate for magnetic disk,... Method of manufacturing substrate for magnetic disk,...

2007-02-13

2007-02-13

Wilson, Lee D. (Department: 3723)

Abrading

Abrading process

Side face of disk

C451S011000, C451S041000, C451S285000

Reexamination Certificate

active

10542803

ABSTRACT:
A magnetic polishing method capable of easily and satisfactorily polishing the inner peripheral end face of a circular hole (1) at the center part of a disk substrate (2) even if the diameter of the circular hole is reduced. By this method, a large quantity of disk substrates with stable quality can be supplied, thermal asperity trouble and head crush can be prevented from occurring on a magnetic disk, and the density of the information recording surface of the magnetic disk can be increased. In the method for polishing the inner peripheral end face of the circular hole (1) at the center part of the disk substrate (2), a magnetic field is formed on the inner peripheral side of the circular hole (1), abrasive materials (4) including magnetic particles and abrasive grains are held by the magnetic field in the circular hole, and the magnetic field is moved to the inner peripheral end face of the circular hole (1) to move the abrasive materials (4) to the inner peripheral end face of the circular hole (1) for polishing the inner peripheral end face of the circular hole (1).

REFERENCES:
patent: 5036015 (1991-07-01), Sandhu et al.
patent: 5069002 (1991-12-01), Sandhu et al.
patent: 5081796 (1992-01-01), Schultz
patent: 6059638 (2000-05-01), Crevasse et al.
patent: 6354928 (2002-03-01), Crevasse et al.
patent: 60-242963 (1985-12-01), None
patent: 6091520 (1994-04-01), None
patent: 7-230621 (1995-08-01), None
patent: 7251369 (1995-10-01), None
patent: 8001506 (1996-01-01), None
patent: 8-132343 (1996-05-01), None
patent: 2000-61810 (2000-02-01), None
patent: 2000-185927 (2000-07-01), None
patent: 2002150546 (2002-05-01), None
patent: 2002-265933 (2002-09-01), None
patent: 2002342915 (2002-11-01), None
patent: 200322522 (2003-01-01), None

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