Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1994-12-01
1997-04-01
Fuller, Benjamin R.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347129, B41J 247, G11B 700, G11B 708, H04N 123
Patent
active
056171323
ABSTRACT:
A raster scanning optical system and method for adjusting the pixel placement of light beams being scanned across an image receiving device. A spot velocity of a first laser beam is measured and then a spot velocity of a second laser beam is measured. From these measurements, the pixel positions of each of the beams can be determined. The firing rate of the second laser beam is then adjusted to adjust the pixel placement of the second beam. This helps avoid problems caused by tangentially offset laser diodes that scan with varying spot linearities.
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"Laser Scanning for Electronic Printing," Proceedings of the IEEE, vol. 70, No. 6, pp. 597-618, by John C. Urbach et al.
Anderson L.
Fuller Benjamin R.
Xerox Corporation
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