Abstract: A photoconductive imaging member containing a photogenerating layer, and a charge transport layer, and wherein the charge transport layer is comprised of an arylamine containing a moiety that minimizes oxidation.
Abstract: A carrier comprised of a core, and thereover a polymer coating containing antimony tin oxide with an average diameter of from about 5 to about 90 nanometers.
Type:
Grant
Filed:
January 26, 2005
Date of Patent:
May 20, 2008
Assignee:
Xerox Corporation
Inventors:
Vladislav Skorokhod, Maria N V. McDougall, Richard P N. Veregin, Cuong Vong, Jackie B. Parker
Abstract: Carrier comprised of a core, a polymer coating, and wherein said coating contains a mixture of an alkali metal lauryl sulfate and a conductive component.
Type:
Grant
Filed:
April 29, 2005
Date of Patent:
May 20, 2008
Assignee:
Xerox Corporation
Inventors:
Christopher M. Pattison, Thomas C. Dombroski, Deepak R. Maniar
Abstract: A photoconductive member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer comprised of a polymer with a low dielectric constant and a charge transport component.
Type:
Grant
Filed:
January 26, 2005
Date of Patent:
April 8, 2008
Assignee:
Xerox Corporation
Inventors:
Jin Wu, Liang-Bih Lin, James M. Duff, Timothy P. Bender
Abstract: An imaging member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a metal alkyoxide, an amino siloxane, and at least one polymer binder containing epoxy groups.
Type:
Grant
Filed:
March 31, 2005
Date of Patent:
January 1, 2008
Assignee:
Xerox Corporation
Inventors:
Yuhua Tong, Nancy L. Belknap, John F. Yanus, Jin Wu
Abstract: A photoconductive imaging member comprised of a substrate, a photogenerating layer, and thereover a charge transport layer comprised of a charge transport component or components, a polymer binder and metal oxide particles, wherein said metal oxide particles contain or are attached with or to a silane or a siloxane, or alternatively a polytetrafluoroethylene.
Type:
Grant
Filed:
April 14, 2004
Date of Patent:
January 23, 2007
Assignee:
Xerox Corporation
Inventors:
Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Yvan Gagnon, John F. Graham, Liang-Bih Lin, Cuong Vong
Abstract: A photoconductive member containing a supporting substrate; a photogenerating layer comprised of a photogenerating component, a hole transport component, an electron transport component, and a polymer binder; and a charge transport layer comprised of a charge transport component, an electron transport component and a polymer binder.
Type:
Grant
Filed:
June 29, 2004
Date of Patent:
January 16, 2007
Assignee:
Xerox Corporation
Inventors:
Andronique Ioannidis, Zoran D. Popovic, Nancy L. Belknap, John F. Graham, Cindy C. Chen, Peter A. Veneman
Abstract: A photoconductive member containing, for example, a substrate, a photogenerating layer, a charge transport layer and an overcoat layer wherein the overcoat layer is comprised of a crosslinked siloxane composite containing a caprolactone-siloxane.
Type:
Grant
Filed:
April 14, 2004
Date of Patent:
October 17, 2006
Assignee:
Xerox Corporation
Inventors:
Yu Qi, Nan-Xing Hu, H. Bruce Goodbrand, Ah-Mee Hor, Cheng-Kuo Hsiao, Cuong Vong, Gregory McGuire
Abstract: A photoconductive imaging member containing a supporting substrate, a photogenerating layer, a charge transport layer, and in contact with the charge transport layer a layer comprised of a polymer and a yellow dye of the formula
Type:
Grant
Filed:
March 25, 2005
Date of Patent:
July 11, 2006
Assignee:
Xerox Corporation
Inventors:
Timothy J. Fuller, Satchidanand Mishra, John F. Yanus, Anthony M. Horgan, Geoffrey M. T. Foley, Huoy-Jen Yuh, Dale S. Renfer, Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, John F. Graham
Abstract: A photoconductive imaging member containing a supporting substrate, and thereover a single layer comprised of a photogenerator component, a charge transport component, an electron transport component, and a polymer binder.
Type:
Grant
Filed:
January 27, 2004
Date of Patent:
July 4, 2006
Assignee:
Xerox Corporation
Inventors:
Timothy P. Bender, John F. Graham, James M. Duff, Andronique Ioannidis, Nancy L. Belknap
Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of at least one copolymer of an aminoalkyltrialkoxysilane and a silane.
Type:
Grant
Filed:
February 9, 2004
Date of Patent:
July 4, 2006
Assignee:
Xerox Corporation
Inventors:
Timothy P. Bender, John F. Graham, Ah-Mee Hor, Johann Junginger
Abstract: A process for the preparation of toner by, for example, mixing a colorant, a latex, and a coagulant comprising cationic wax dispersion to provide, for example, a toner composition of high gloss images.
Type:
Grant
Filed:
February 12, 2004
Date of Patent:
May 23, 2006
Assignee:
Xerox Corporation
Inventors:
Michael A. Hopper, Raj D. Patel, Enno E. Agur, Joseph Bartel, Daryl Vanbesien
Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a pyrolyzed polyacrylonitrile.
Type:
Grant
Filed:
February 9, 2004
Date of Patent:
May 23, 2006
Assignee:
Xerox Corporation
Inventors:
Timothy J. Fuller, Helen R. Cherniack, Damodar M. Pai, Markus R. Silvestri, John F. Yanus, Yuhua Tong, Dale S. Renfer, Kenny-Tuan T. Dinh, Merlin E. Scharfe, Steven M. Sterling
Abstract: A photoconductive imaging member comprised of a photogenerating layer and a charge transport layer, and wherein the charge transport layer contains a polymeric solid acid.
Type:
Grant
Filed:
January 22, 2004
Date of Patent:
May 16, 2006
Assignee:
Xerox Corporation
Inventors:
Yuhua Tong, Satchidanand Mishra, Anthony M. Horgan, John F. Yanus, Dale S. Renfer, Robert C. U. Yu, Markus R. Silvestri, Cindy C. Chen, Lanhui Zhang
Abstract: A process including blending a latex emulsion of resin, water, and an ionic surfactant, a colorant dispersion comprised of a colorant, water, and an ionic surfactant; and a wax dispersion comprised of wax, water and an ionic surfactant, heating the resulting mixture in the presence of coagulants, one of which is a source of calcium ions, which heating is below about the glass transition temperature (Tg) of the latex resin and subsequently heating above about the glass transition temperature (Tg) of the latex resin.
Type:
Grant
Filed:
February 10, 2004
Date of Patent:
May 9, 2006
Assignee:
Xerox Corporation
Inventors:
Michael A. Hopper, Joseph Bartel, Maria N. V. McDougall, Patricia A. Burns, Richard P. N. Veregin
Abstract: A photoconductive imaging member including a supporting substrate, a hole blocking layer thereover, a crosslinked photogenerating layer and a charge transport layer, and wherein the photogenerating layer includes a photogenerating component and a vinyl chloride, allyl glycidyl ether, hydroxy containing polymer.
Type:
Grant
Filed:
February 19, 2003
Date of Patent:
May 2, 2006
Assignee:
Xerox Corporation
Inventors:
Jin Wu, Liang-Bih Lin, John S. Chambers
Abstract: A process involving heating a mixture of a colorant dispersion, a latex emulsion, and an optional wax dispersion in the presence of a coagulant containing a metal ion, a base, and an organic sequestering agent, and wherein said heating involves a first heating and a second heating, and wherein the second heating is at a higher temperature than the first heating; and wherein said higher temperature is equal to about or above about the Tg of polymer or resin contained in said latex emulsion.
Abstract: A toner process comprising the aggregation and coalescence of a sulfonated polyester and a colorant, and wherein said polyester possesses a degree of sulfonation or a sulfonation percentage of from about 0.5 to about 3 mol percent.
Type:
Grant
Filed:
February 13, 2004
Date of Patent:
April 18, 2006
Assignee:
Xerox Corporation
Inventors:
Sarah J. P. Robinson, Thomas E. Enright, Alan E. J. Toth, Milan Maric, Michael S. Hawkins, Marko D. Saban, Guerino G. Sacripante, George Liebermann
Abstract: A photoconductive imaging member containing a photogenerating layer, a charge transport layer, or a plurality of charge transport layers, and which charge transport, especially the top charge transport layer contains a vinyl containing organic compound.
Type:
Grant
Filed:
April 24, 2003
Date of Patent:
March 7, 2006
Assignee:
Xerox Corporation
Inventors:
Robert C. U. Yu, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Yuhua Tong, Edward F. Grabowski, Kathleen M. Carmichael, Markus R. Silvestri