A beam of light used to etch servo tracks on a magnetic disk is steered with an acousto-optical device to maintain the beam in concentrical patterns while mechanically moving the optics which generate the beam of light continuously radially of the disk.

Title
Steering laser beam while etching optical servo tracks for magnetic disks
Application Number
PCT/US1993/005646
Publication Number
1993/026007
Application Date
June 10, 1993
Publication Date
December 23, 1993
Inventor
Wilson Scott
Bero James
Wallentine Don W
Thomas Fred Charles
Agent
KURTZ Richard E
Assignee
Minnesota Mining And Manufacturing Company
IPC
G11B 05/596
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