Electrophotography – Control of electrophotography process – Control of developing
Reexamination Certificate
2007-03-27
2009-08-25
Brase, Sandra L (Department: 2852)
Electrophotography
Control of electrophotography process
Control of developing
C399S266000
Reexamination Certificate
active
07580648
ABSTRACT:
To generate a toner cloud in a development system, a first potential is applied to a donor roll for a first pulse time to project toner from the donor roll toward a photoreceptor; a second potential is applied to the donor roll for a second pulse time to slow the speed at which the toner is projected toward the photoreceptor; a third potential is applied to the donor roll for a third pulse time to hold toner between the donor roll and the photoreceptor; and a fourth potential is applied to the donor roll for a fourth pulse time to urge undeveloped toner to the surface of the donor roll. Voltages may also be applied for selectivity removing toner from a donor roll.
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Morehouse Jr. Paul W.
Shaw John Gary
Brase Sandra L
Oliff & Berridg,e PLC
Xerox Corporation
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