Electrophotography – Control of electrophotography process – Of plural processes
Reexamination Certificate
2006-06-06
2006-06-06
Ngo, Hoang (Department: 2852)
Electrophotography
Control of electrophotography process
Of plural processes
C399S060000
Reexamination Certificate
active
07058325
ABSTRACT:
Systems and methods of controlling banding defects on a receiving member in an imaging or printing process using a feedback and/or feedforward control technique. In one exemplary embodiment, a method of controlling banding defects on a receiving member in an imaging or printing process includes (a) determining a toner density on the receiving member, (b) automatically determining the extent of banding on the receiving member by comparing the determined toner density to a reference toner density value, and (c) automatically adjusting the toner density based on a result obtained from the comparison of the measured toner density to the reference toner density value, automatically determining the extent of banding and automatically adjusting the toner density being performed using a feedback and/or feedforward control routine or application.
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Lin, G.Y. et al. “Banding Artifact Reduction in Electrophotographic Printers Using Pulse Width Modulation.”IEEE Transactions on Image Processing.
Ewe, M. “Banding Reduction in Electrophotographic Processes Using Piezoelectric Actuated Laser Beam Deflection Device.”Journal of Imaging Science and Technology.
Gross Eric M.
Hamby Eric S.
Lange Clark V.
Thompson Michael D.
Viassolo Daniel E.
Ngo Hoang
Oliff & Berridg,e PLC
Xerox Corporation
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