Abstract: A donor member useful in ionographic or electrophotographic apparatuses and useful in hybrid scavengeless and hybrid jumping development units, the donor member having a substrate and an outer coating of a blend including metal and ceramic.

Abstract: A donor roll for use in a development apparatus in an electrophotographic apparatus. The donor roll includes a core and an extruded layer comprising a fluoropolymer material. The core includes metal and has a length, and a periphery surface. The extruded layer comprising a fluoropolymer material, the layer having a length, thickness and a lumen therein for receiving at least a length of the core, the extruded layer comprising the fluoropolymer material is shrunken to substantially conform to the core. The donor roll may include a coating between the extruded layer and the core.

Abstract: A toner donor roll for use in a development apparatus of a electrophotographic apparatus is disclosed. The donor roll includes a conductive core of a ceramic outer coating over the conductive core, the ceramic coating formed from thermal spraying a single homogeneous powder consisting of particles each of which contains a specific ratio of pure alumina and pure titania held together with an organic binder.

Abstract: A toner donor roll for use in a development apparatus of an electrophotographic apparatus is disclosed. The donor roll includes a conductive core of a ceramic outer coating over the conductive core, the ceramic coating formed from thermal spraying a single homogeneous powder consisting of particles each of which contains a specific ratio of pure alumina and pure titania held together with an organic binder.

Abstract: A bias transfer member or bias charging member for a xerographic device includes a support substrate, and a multi-layer conductive surface coating over the support substrate. The multi-layer coating includes a base layer of metal-containing particles in a polymer binder, an intermediate layer of conductive particles in a polymer binder, and a top layer of conductive particles in a polymer binder, wherein the amount of the conductive particles in the top layer is greater than the amount of the conductive particles in the intermediate layer. The multi-layer coating exhibits ideal electrical and abrasion resistance performance for use in bias charging or transfer members.

Abstract: Rolls include a core and a stabilized zirconia-containing outer coating on the core. The outer coating can also include titania. The outer coatings have smooth finishes and controlled electrical properties. The outer coatings of the rolls can be finished to a highly smooth finish in reduced cycle times. The rolls can be used in electrostatographic imaging apparatus as charge donor rolls.

Abstract: A donor member, useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, has a substrate and an oxidized transport coating thereover. The oxidized transport coating includes a polymer binder, charge transporting molecules and one or more oxidizing agents. The polymer binder of the donor roll coating preferably includes one of (1) a crosslinked polymer with charge transporting molecules dispersed therein, or (2) a crosslinked polyamide binder with hydroxy charge transport molecules dispersed therein. The donor roll is preferably included in a printing machine that develops latent images formed on a photoconductive member.

Abstract: A roller includes a core and a ceramic coating formed over the core. The roller has a composite runout of less than 20 &mgr;m and a total indicator reading runout of less than 7 &mgr;m. The ceramic coating has a smooth finish and has controlled electric properties. This roller can be used as a donor roller for transporting toner to a photoconductive member so as to achieve high-quality image development.

Abstract: A donor member useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, having a substrate and an oxidized transport coating including charge transport molecules, polymer binder, and an oxidized oligo arylamine salt comprising a cation of an oligo arylamine molecule and a counter anion.

Abstract: An article including a cylindrical roller core; and a titanium dioxide ceramic layer bonded to the exterior of the cylindrical core.