Xerox Corporation

Suresh K Ahuja

Santokh Singh Badesha

Timothy J Fuller

Arnold W Henry

George J Heeks

Richard L Schank

Merlin E Scharfe

J Stephen Kittelberger

Mark James Hirsch

John G VanDusen

Satchidanand Mishra

Robert C U Yu

Anthony M Horgan

Thomas W Smith

Dasarao K Murti

Edward J Gutman

John R Laing

John G Van Dusen

Richard B McGriff

Timothy J Waldnig

Chieh-Min Cheng

Michael Steven Hawkins

Robert D Bayley

Thomas R Hoffend

Vladislav Skorokhod

John S Berkes

Paul C Julien

Che C Chow

Kathleen M McGrane

Deepak R Maniar

Kevin F Marcell

William M Prest, Jr

Robert A Nelson

Robert A Gill

Frederick J Good

An electrophotographic imaging member having a charge generating layer and a charge transport layer overlayed thereon is provided. The charge transport layer has a lower surface and an upper surface, wherein the lower surface is in contiguous contact with the charge generating layer. The charge transport layer comprises a film forming polymer binder and a charge transport compound molecularly dispersed or dissolved therein to form a solid solution. The concentration of the charge transport compound in the charge transport layer decreases from the lower surface to the upper surface. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improved wear resistance, excellent imaging member electrical performance, and improved copy print out quality.

Imaging members

A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the latex contains a polymer with a static yield stress of from about 0.05 to about 3 dyne/cm, a viscosity for the polymer latex of from about 5 to about 35 centipoises (cps), and wherein said toner product possesses a volume average particle size distribution index GSDv of equal to or less than about 1.27, a number average particle size distribution index GSDn of equal to or less than about 1.30, a low number average particle size index GSDnof equal to about or less than about 1.32, and a ratio of the volume average particle size distribution index GSDv to a number average particle size distribution index GSDn of from about 0.93 to about 1.

Toner processes

Disclosed is a phase change ink composition comprising a colorant and an ink vehicle, said ink being a solid at temperatures less than about 50&deg; C., wherein the ink vehicle comprises a borate ester.

Phase change inks containing borate esters

Transfer members useful in electrostatographic reproducing apparatus, including digital, image-on-image and contact electrostatic printing apparatus. The transfer members feature a substrate comprising a nanosize polymer material and can be used as transfer members, transfuse, transfix members, or transport members.

Transfer/transfuse member having increased durability

A process for manufacturing a conductive micro-powder includes the steps of: (i) forming an aqueous dispersion of conductive material and the first surfactant, (ii) mixing a latex emulsion of a polymer and a second surfactant into the aqueous dispersion to form a suspension and (iii) recovering the conductive micro-powder from the suspension. The first and second surfactants are of the same class and polarity. The conductive micro-powder finds particular utility as a coating for carrier core particles, and as a conductive coating component of carrier particle coatings.

Method of making a conductive micro-powder resin

A process including: heating resin coated core particles for a time until the weight average molecular weight of the resin coating declines.

Carrier coating processes

An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an inorganic coating on at least a portion of the electrode member.

Inorganic coated development electrodes and methods thereof

An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an organic coating on at least a portion of the electrode member.

Organic coated development electrodes and methods thereof

An apparatus for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus which includes providing a low surface energy coating on at least a portion of the electrode member.

Coated development electrodes and methods thereof

A solution polymerization process for producing an organic polymer from styrene and at least one other polymerizable monomer comprising providing a liquid reaction medium suitable for conducting said polymerization, wherein the reaction medium contains styrene and a polymerizable monomer other than styrene; and, anionically polymerizing styrene and monomer, thereby forming random copolymer chains, wherein the total quantity of said styrene used in said polymerization is at least 50% by weight based on the total weight of styrene and other polymerizable monomers used in the polymerization. A second embodiment comprises a copolymer made by the above-described method. A third embodiment comprises a process for forming a toner, wherein the process comprises providing a liquid reaction medium suitable for conducting a solution polymerization, the reaction medium containing at least two polymerizable monomers; anionically polymerizing the monomers, thereby forming random and nearly random copolymer chains; finely dividing the copolymer into particles; and, incorporating said particles into a composition for use as a toner. A fourth embodiment comprises a toner made by extrusion with pigment or colorant and change control additive to form small particles. A fifth embodiment comprises a solution polymerization process for producing an organic polymer wherein a difunctional initiator is used to initiate said polymerization.

Random copolymers made by anionic polymerization, toners incorporating

A process for the preparation of a toner with a melting point of from about 100.degree. to about 130.degree. C. which comprises the addition of a linear crystalline polyethylene with a weight average molecular weight of from about 500 to about 1,200 to a toner comprised of a polyester and pigment.

Toner compositions and processes with polyethylenes including a linear

A toner composition comprised of a blend of resin particles containing styrene polymers or polyesters, and components selected from the group consisting of a semicrystalline polyolefin and copolymers thereof with a melting point of from about 50.degree. C. to about 100.degree. C., and pigment particles.

Toner and developer compositions with semicrystalline polyolefin resin

A toner composition comprised of resin particles selected from the group consisting of a semicrystalline polyolefin and copolymers thereof which a melting point of from about 50.degree. C. to about 100.degree. C., and pigment particles.

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Webster, NY, United States of America

Suresh K Ahuja