Systems and methods for momentum controlled scavengeless...

Details Systems and methods for momentum controlled scavengeless... Systems and methods for momentum controlled scavengeless...

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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patent: 6026264 (2000-02-01), Wong et al.
patent: 6035170 (2000-03-01), Snelling
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patent: 6360067 (2002-03-01), Hays et al.
patent: 6459862 (2002-10-01), Sakemi et al.
patent: 7079794 (2006-07-01), Forbes, II et al.

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