Patent ID: 8331816

Claim:
An image printing system configured to minimize two-dimensional image quality non-uniformities on printed documents, the system comprising: a marking engine constructed to print toner images on an image bearing surface moving in a process direction, wherein the marking engine comprises a toner development system and the toner image comprises an image dependent reload ghost non-uniformity; a linear array sensor adjacent to the image bearing surface and extending in a cross-process direction, the linear array sensor being configured to scan the toner image on the image bearing surface to obtain image data; an image analyzer configured to: a) average the image data along the process direction to obtain an image dependent reload ghost non-uniformity profile; and b) detect the image dependent reload ghost non-uniformity from the image dependent reload ghost non-uniformity profile; and a controller configured to control at least one control parameter of at least one actuator of the toner development system based on the image dependent reload ghost non-uniformity that is detected by the image analyzer so as to compensate for the detected image dependent reload ghost non-uniformity, wherein the at least one control parameter is selected from the group consisting of toner concentration, toner charge to mass ratio, magnetic roll speed, donor to magnetic roll AC voltage, donor to magnetic roll DC voltage, and magnetic roll bias.