DocumentCode
1414370
Title
Issues on high-speed laser zone texturing of magnetic disk substrates with improved quality
Author
Park, Hee K. ; Kerstens, Pieter J M ; Baumgart, Peter ; Tam, Andrew C.
Author_Institution
IBM Manuf. Technol. Center, Boca Raton, FL, USA
Volume
34
Issue
4
fYear
1998
fDate
7/1/1998 12:00:00 AM
Firstpage
1807
Lastpage
1809
Abstract
Important issues of laser zone texturing in manufacturing are discussed. We report practical strategies in terms of tooling and process control. We found that good bump height uniformity is achieved by operating in the most stable region where the effects of laser pulse energy fluctuation, disk thickness variation, and disk runout are minimized. By selecting optimum process parameters, a bump height standard deviation of less than 1.5% can be achieved
Keywords
laser materials processing; magnetic disc storage; surface texture; surface topography; surface treatment; bump height standard deviation; bump height uniformity; disk runout; disk thickness; high-speed laser zone texturing; laser pulse energy fluctuation; magnetic disk substrates; manufacturing; process control; tooling; Laser beams; Laser stability; Laser theory; Manufacturing processes; Optical pulses; Process control; Production; Space vector pulse width modulation; Surface emitting lasers; Throughput;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.706713
Filename
706713
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