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Charging Device with Point by Point Voltage Control

IP.com Disclosure Number: IPCOM000033704D
Publication Date: 2004-Dec-23

Publishing Venue

The IP.com Prior Art Database


Charging of an imaging surface is often non-uniform across the surface. Previous efforts to improve uniformity include scorotron grids, corotron pins, etc. Individual pins of pin charging device can be controlled individually by independent circuitry. This allows the individual pins to have the appropriate voltage to produce a uniform charge on the imaging device. This technique can be used with or without a (scorotron) grid between the pin charging device and the imaging device.