05322987 is referenced by 22 patents and cites 13 patents.

An apparatus for etching optical servo tracks on a magnetic storage disk comprises optics for generating a beam of light for etching the servo tracks and a spindle for rotating the disk in proximity to the optics. The device further comprises a center pin at the center of rotation of the spindle and an alignment pin which is off-center of the spindle. A disk to be etched is placed on the spindle with the center pin through a center hole in the disk hub. A pressurized gas nozzle directs bursts of pressurized gas toward the edge of the disk to rotate the disk until an alignment hole in the disk hub engages the alignment pin.

Title
Pneumatic hub locking device for etching optical servo tracks on magnetic disks
Application Number
7/896314
Publication Number
5322987
Application Date
June 10, 1992
Publication Date
June 21, 1994
Inventor
Paul R Johnson
Kaysville
UT, US
Fred C Thomas
East Kaysville
UT, US
Agent
Woodcock Washburn Kurtz Mackiewicz & Norris
Assignee
Iomega Corporation
UT, US
IPC
B23K 26/14
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