Patent ID: 8023846

Claim:
An electrostatographic printing apparatus, the apparatus comprising: an imaging member; a development station for depositing toner upon the imaging member, said development station including a segmented roller, having two or more segments to control the depositing of toner to the imaging member on a segment by segment basis, to deposit at least a monolayer of toner to the imaging member in one or more areas of said imaging member in an image wise portion or in a non-image wise portion; a controller for controlling an electrical bias to said development station wherein the controller separately controls an electrical bias to the segments of said segmented roller, wherein the deposition of the toner to the imaging member by said segments selectively includes an image wise portion and a non-image-wise portion; and a transfer station for transferring the toner image wise portion and any toner non-image-wise portion formed on said imaging member to a receiver sheet.