COMPENSATING FOR PERIODIC NONUNIFORMITY IN ELECTROPHOTOGRAPHIC PRINTER

摘要

A method is provided of compensating for periodic non-uniformity in an electrophotographic (EP) printer with a rotatable imaging component, and a runout sensor for measuring the distance between a first reference point and the surface of the first component along a first reference axis. An image signal representing an image to be produced on a receiving member by the printer is received. The component is rotated. While it is rotating, the distance for the component is measured using the runout sensor. A correction value corresponding to the measured distance is automatically determined using a processor. The image data corresponding to the measured distance are automatically adjusted with the correction value using the processor. Toner corresponding to the adjusted image data is deposited on the receiver using the component.