Patent ID: 7914099
Filing Date: 2011-03-29
Classification: B41J

Abstract:
1. A media handling system for delivering media sheets to be printed from a staging location to a drum along a media path, comprising: at least one drive roller positioned along the media path between the staging location and the drum; a sensor positioned along the media path between the at least one drive roller and the drum; an encoder that provides an output responsive to the sensor; a controller coupled to the encoder; and, at least one motor coupled to the drive roller, the at least one motor having an operating bias of V wherein V wherein, when the at least one drive roller advances the media sheet from the staging location to engage the drum, the sensor detects a leading edge of the advancing media sheet prior to engaging the drum, a value indicative of a position of the at least one motor is latched and received by the controller in response to the sensor detecting the leading edge of the media sheet, the controller determines a difference between the latched value to a predetermined value indicative of a distance the motor was expected to have traveled, and the rate of further advancing of the media sheet to engage the drum by the at least one drive roller is dependent upon the encoder output and is adjusted by modifying the operating bias of the at least one motor such that the operating bias equals V