Patent ID: 8827406
Filing Date: 2014-09-09
Classification: B41J

Abstract:
1. A system for reducing velocity transits in a printing system caused by media entering into a transfer nip, the system comprising: an imaging drum rotating about a longitudinal axis and having a drum surface equidistant from the longitudinal axis; a variable speed motor for rotating the imaging drum at an angular velocity; a transfix roll rotating about a longitudinal axis at an angular velocity and having a roll surface equidistant from the longitudinal axis, wherein the longitudinal axis of the drum is substantially parallel to the longitudinal axis of the roll and the drum surface contacts the roll surface; a transfix nip formed where the imaging drum contacts the transfix roll, wherein media entering into the transfix nip causes a velocity transient in the angular velocity; a media transport for moving a media along a media path in a process direction, wherein the media is transported to the transfix nip; a means for determining the thickness of the media and transmitting a thickness output signal; a skew sensor for measuring the skew of the media and transmitting a skew output signal; and a controller having a motor speed set point and an output signal for controlling the variable speed motor at the motor speed set point, wherein the output signal is adjusted based on the thickness output signal and the skew output signal.