Abstract: A high speed heat and pressure belt fuser apparatus or structure for fixing toner images including an endless belt and a pair of pressure members between which the endless belt is sandwiched for forming a fusing nip through which substrates carrying toner images pass with the toner images contacting an outer surface of the endless belt. Thus, one of the pressure rolls is supported internally of the endless belt while the other pressure roll is supported externally of the belt. The belt has at least one conformable or deformable layer which cooperates with a deformable or conformable layer on at least one of the pressure members to provide a large nip that yields high gloss images, long belt life, minimal edge wear and reliable stripping at high speeds. Effective substrate stripping is accomplished by wrapping a portion of the belt about the external roll in a post-nip area.
Type:
Grant
Filed:
August 12, 2002
Date of Patent:
June 29, 2004
Assignee:
Xerox Corporation
Inventors:
John S. Berkes, Donald M. Bott, Anthony S. Condello
Abstract: Development electrode wires for use in a Scavengless or Hybrid Scavengless Development system are treated using Ion Implantation so as to minimize the creation of charge potential between the electrode wires and developer material during frictional contact therebetween. Treatment of the wires using Ion Implantation for minimizing the creation of a charge potential is effected without diminishing the hardness of the wire material. In fact, wire hardness and resistance to wire contamination are enhanced using Ion Implantation in fabricating the wires. A bare wire used for the electrode is first plated with a Gold/Platinum alloy. The ions become implanted in the substrate without altering the surface finish of the wire electrodes yet alter the tribo-charging properties or Electronegativity of the wire. The result of Ion Implantation is to tune or match the Electronegativity of the electrode wire with the Electronegativity of the toner material used in the development system.