Toner compositions comprising polyester resin and polypyrrole
AssigneeXerox Corporation
InventorsJames R. Combes, Karen A. Moffat, Maria N. V. McDougall
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Abstract
Disclosed is a toner comprising particles of a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process.
Claims60
A process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process, wherein the toner particles comprise a core comprising the polyester resin and optional colorant and, coated on the core, a coating comprising the polypyrrole, wherein the polypyrrole has at least about 3 repeat monomer units and wherein the polypyrrole has no more than about 100 repeat monomer units.
A process for developing a latent image recorded on a surface of an image receiving member to form a developed image, said process comprising (a) moving the surface of the image receiving member at a predetermined process speed;
- (b) storing in a reservoir a supply of toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process;
- (c) transporting the toner particles on an outer surface of a donor member to a development zone adjacent the image receiving member;
- and (d) inductive charging said toner particles on said outer surface of said donor member prior to the development zone to a predefined charge level, wherein the inductive charging step includes the step of biasing the toner reservoir relative to the bias on the donor member.
A process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a polyester resin, an optional colorant, and polypyrrole, wherein said toner particles are prepared by an emulsion aggregation process, wherein the toner particles are charged by a nonmagnetic inductive charging process, wherein the toner particles are charged in a developing apparatus which comprises a housing defining a reservoir storing a supply of developer material comprising the toner particles;
- a donor member for transporting toner particles on an outer surface of said donor member to a development zone;
- means for loading a layer of toner particles onto said outer surface of said donor member;
- and means for inductive charging said toner layer onto said outer surface of said donor member prior to the development zone to a predefined charge level, wherein said inductive charging means comprises means for biasing said toner reservoir relative to the bias on the donor member.
Dependencies are inferred from the claim text.