Pneumatic hub locking device for etching optical servo tracks on

Details Pneumatic hub locking device for etching optical servo tracks on Pneumatic hub locking device for etching optical servo tracks on

1992-06-10

1994-06-21

Albritton, C. L.

Electric heating

Metal heating

By arc

21912184, 360135, 369 4411, B23K 2614

Patent

active

053229878

ABSTRACT:
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.

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