Patents by Inventor Dennis J. Prosser

Dennis J. Prosser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7618756
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: November 17, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Publication number: 20090274967
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein at least one of the photogenerating layer and charge transport layer contains a quinoxaline, including derivatives thereof.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Dennis J. Prosser, Sherri A. Colon, Dale S. Renfer, Daniel V. Levy, June Shujun Peng
  • Publication number: 20090246662
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and where the photogenerating layer contains a hydroxyquinoline.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Dennis J. Prosser, J. Robinson Cowdery-Corvan, Raymond K. Crandall, David M. Skinner, Jean D. Van Epps, JR.
  • Patent number: 7579126
    Abstract: A photoconductor containing a substrate; an undercoat layer thereover wherein the undercoat layer includes an electroconducting component dispersed in a rapid curing polymer matrix; a photogenerating layer, and at least one charge transport layer.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: August 25, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Dennis J. Prosser, Satchidanand Mishra, Liang-Bih Lin, Daniel V. Levy, Lin Ma
  • Publication number: 20090061340
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains a photogenerating pigment or pigments, and a hydroxyalkoxy benzophenone.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Dennis J. Prosser
  • Patent number: 7459251
    Abstract: An imaging member comprising a barrier or under-layer intermediate a photogenerating layer and charge transport layer to reduce charge deficiency spots. The barrier under-layer comprises a film forming polymer binder selected from a conductive polymer binder, a non-conductive polymer binder, or mixtures thereof. Optionally, the barrier layer can include a small amount of a charge transport material.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: December 2, 2008
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Kathleen M. Carmichael, Yuhua Tong, Anthony M. Horgan, Edward F. Grabowski, Richard L. Post, Robert C. U. Yu, Dennis J. Prosser, Edward Domm, Min-Hong Fu
  • Publication number: 20080220352
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Publication number: 20080220351
    Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent of, for example, a ?-diketone, a ketoester, a hydroxyl carboxylic acid, a hydroxyl carboxylic acid ester, a keto alcohol, or an amino alcohol.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
  • Publication number: 20080220350
    Abstract: A photoconductor containing a substrate; an undercoat layer thereover wherein the undercoat layer includes an electroconducting component dispersed in a rapid curing polymer matrix; a photogenerating layer, and at least one charge transport layer.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 11, 2008
    Inventors: Jin Wu, Dennis J. Prosser, Satchidanand Mishra, Liang-Bih Lin, Daniel V. Levy, Lin Ma
  • Patent number: 7390598
    Abstract: An imaging member includes a conductive substrate, a charge generating layer, a charge transport layer, and an intermediate layer between the charge generating layer and the charge transport layer, the intermediate layer including a hole transport material, such as three different hole transfer materials, dispersed in a film forming binder, such as two different binder materials.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: June 24, 2008
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Yuhua Tong, Anthony M. Horgan, Kathleen M. Carmichael, Dennis J. Prosser, Richard L. Post, Edward F. Grabowski
  • Patent number: 7232634
    Abstract: A charge transport layer for an imaging member comprising a charge transport material with a nitrogen molecular defense system not exhibiting early onset of charge transport layer fatigue cracking. The nitrogen molecular defense system includes attaching bulky organic groups to charge transport materials. The bulky groups aid in preventing recrystallization of the charge transport molecule and shield the nitrogen from molecular attack, such as by oxidation. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: June 19, 2007
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Alexander N. Klymachyov, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
  • Patent number: 7187534
    Abstract: By varying corona producing element height/projection, a more uniform charge potential is achieved. Elements, such as pins or teeth, are shorter at the edges of an element array and grow longer as one moves toward the center of the array. Such variation in height/projection overcomes shielding from adjacent teeth, as well as other effects, to yield the more uniform charging potential.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: March 6, 2007
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Edward A. Domm, Dennis J. Prosser, Steven P. Nonkes, Zoran D. Popovic, Surendar Jevadev
  • Patent number: 7094509
    Abstract: A photoconductive imaging member comprised of a photogenerating layer, and a charge transport layer containing a binder and a fluoropolymer generated by the free radical polymerization of a fluoroalkyl(methyl)acrylate and an alkyl(methyl)acrylate.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: August 22, 2006
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Timothy J. Fuller, Cindy C. Chen, John F. Yanus, Robert C. U. Yu, Min-Hong Fu, Lanhui Zhang, Dennis J. Prosser, Susan M. VanDusen
  • Patent number: 6991880
    Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a poly(phenylsilsesquioxane), molecule, and a film forming binder.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: January 31, 2006
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Cindy C. Chen, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
  • Patent number: 6909867
    Abstract: By varying corona producing element height/projection, a more uniform charge potential is achieved. Elements, such as pins or teeth, are shorter at the edges of an element array and grow longer as one moves toward the center of the array. Such variation in height/projection overcomes shielding from adjacent teeth, as well as other effects, to yield the more uniform charging potential.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: June 21, 2005
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Edward A. Domm, Dennis J. Prosser, Steven P. Nonkes, Zoran D. Popovic
  • Patent number: 6875548
    Abstract: A photoconductive imaging member including an optional supporting substrate, a photogenerating layer, and a charge transport layer, and wherein said layer includes a charge transport component and a polysiloxane.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: April 5, 2005
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Timothy J. Fuller, John F. Yanus, Dale S. Renfer, Markus R. Silvestri, Cindy C. Chen, Dennis J. Prosser, Susan M. VanDusen, Lanhui Zhang, Sean X. Pan
  • Publication number: 20040175637
    Abstract: A photoconductive imaging member including an optional supporting substrate, a photogenerating layer, and a charge transport layer, and wherein said layer includes a charge transport component and a polysiloxane.
    Type: Application
    Filed: February 19, 2003
    Publication date: September 9, 2004
    Applicant: Xerox Corportion
    Inventors: Yuhua Tong, Timothy J. Fuller, John F. Yanus, Dale S. Renfer, Markus R. Silvestri, Cindy C. Chen, Dennis J. Prosser, Susan M. VanDusen, Lanhui Zhang, Sean X. Pan
  • Patent number: 6787277
    Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a synthesized mixture of N,N,N′,N′-Tetra-p-tolyl-biphenyl-4,4′-diamine, N,N′-Diphenyl-N,N′-di-m-tolyl-biphenyl-4,4′-diamine, N,N′-Bis-(4-butyl-phenyl)-N,N′-di-p-tolyl-biphenyl-4,4′-diamine, N,N′-Bis-(4-butyl-phenyl)-N,N′-di-m-tolyl-biphenyl-4,4′diamine, N-Phenyl-N-m-tolyl-N′,N′-di-p-tolyl-biphenyl-4,4′-diamine, N-(4-Butyl-phenyl)-N,N′,N′-tri-p-tolyl-biphenyl-4,4′-diamine, N-(4-Butyl-phenyl)-N′-phenyl-N′-m-tolyl-N-p-tolyl-biphenyl-4,4′-diamine, N-(4-Butyl-phenyl)-N-m-tolyl-N′,N′-di-p-tolyl-biphenyl-4,4′-diamine, N-(4-Butyl-phenyl)-N′-phenyl-N,N′-di-m-tolyl-biphenyl-4,4′-diamine, and N,N′-Bis-(4-butyl-phenyl)-N-m-tolyl-N′-p-tolyl-biphenyl-4,4′-diamine, and a film forming binder.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: September 7, 2004
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, John F. Yanus, Timothy J. Fuller, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
  • Publication number: 20040105701
    Abstract: By varying corona producing element height/projection, a more uniform charge potential is achieved. Elements, such as pins or teeth, are shorter at the edges of an element array and grow longer as one moves toward the center of the array. Such variation in height/projection overcomes shielding from adjacent teeth, as well as other effects, to yield the more uniform charging potential.
    Type: Application
    Filed: August 29, 2003
    Publication date: June 3, 2004
    Applicant: Xerox Corporation
    Inventors: Satchidanand Mishra, Edward A. Domm, Dennis J. Prosser, Steven P. Nonkes, Zoran D. Popovic
  • Publication number: 20040105210
    Abstract: By varying corona producing element height/projection, a more uniform charge potential is achieved. Elements, such as pins or teeth, are shorter at the edges of an element array and grow longer as one moves toward the center of the array. Such variation in height/projection overcomes shielding from adjacent teeth, as well as other effects, to yield the more uniform charging potential.
    Type: Application
    Filed: November 25, 2003
    Publication date: June 3, 2004
    Applicant: Xerox Corporation
    Inventors: Satchidanand Mishra, Edward A. Domm, Dennis J. Prosser, Steven P. Nonkes, Zoran D. Popovic, Surendar Jevadev