SELECTIVE TRANSFER OF TONER IMAGES USING A GROUNDED BRUSH
Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
This disclosure relates to selective transfer of toner images with a grounded brush. The selective transfer process is one in which a dark dusting of charged toner is created on a photoreceptor exposed and then brought to a transfer station which attempts to transfer image areas only by virture of the transfer field created by the image toner charge. While the exposure step brings the surface voltage to a low value in the background areas non-electrostatic transfer of small amounts of material in these regions results from toner-paper contact. It has been demon-strated that this background transfer can be eliminated if sufficiently low pressure exists in the transfer nip. Attainment of such low transfer pressures may be achieved in the configuration described below.