Apparatus and method for inspecting disks

Details Apparatus and method for inspecting disks Apparatus and method for inspecting disks

1997-09-08

1999-06-01

Patidar, Jay M.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

360 31, 369 58, G01R 3312

Patent

active

059091177

ABSTRACT:
Functional devices for inspecting disks are arranged around a turntable at equal spacings of angle 2n.pi./(n+m) in the order of the operations they perform. The turntable is rotated both in forward direction by angle 2n.pi./(n+m) and in reverse direction by angle 2m.pi./(n+m) such that the total angle of rotations in forward direction is equal to that of rotations in reverse direction when the necessary operations have completed without causing the turntable to rotate fully once.

REFERENCES:
patent: 5245403 (1993-09-01), Kato et al.
patent: 5423111 (1995-06-01), Mori
patent: 5640089 (1997-06-01), Horikawa et al.

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