Patents by Inventor Kent J. Evans

Kent J. Evans 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).

  • PYRAZINE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090274968
    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 the charge transport layer contains a pyrazine.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M. Carmichael
  • CARBAZOLE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090274970
    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 the charge transport layer contains a carbazole.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M Carmichael
  • LOW FRICTION ELECTROSTATOGRAPHIC IMAGING MEMBER
    Publication number: 20090253063
    Abstract: Present embodiments pertain to an improved electrostatographic imaging member having low contact friction surfaces to ease sliding mechanical interaction and suppressing abrasion/wear failure and methods of preparing thereof. The improved imaging member has layers comprising one or two low surface energy polymeric materials that enhance the physical and mechanical functions and reduce the layers surface contact friction of the imaging member to extend service life.
    Type: Application
    Filed: April 7, 2008
    Publication date: October 8, 2009
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Stephen T. Avery, Kent J. Evans
  • THIADIAZOLE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090246667
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M. Carmichael
  • OVERCOAT CONTAINING TITANOCENE PHOTOCONDUCTORS
    Publication number: 20090246657
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, a charge transport layer, and an overcoat layer that contains a titanocene.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, John F. Yanus, Kenny-Tuan Dinh, Kent J. Evans, Min-Hong Fu, Susan M. Vandusen
  • Imaging member having antistatic anticurl back coating
    Patent number: 7560210
    Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to the incorporation of thiophosphates in the anticurl back coating to reduce or eliminate static charge buildup in the imaging member and to improve image quality.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: July 14, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Geoffrey M. T. Foley, Satchidanand Mishra, Liang-bih Lin, Anthony M. Horgan, Kent J. Evans, Kathleen M. Carmichael, Edward F. Grabowski
  • Titanyl phthalocyanine photoconductors
    Patent number: 7553593
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the photogenerating layer contains a titanyl phthalocyanine prepared, for example, by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the mixture comprising the dissolved Type I titanyl phthalocyanine to a solution comprising an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with a monohalobenzene.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: June 30, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Satchidanand Mishra, Kathleen M. Carmichael, Anthony M. Horgan, Kent J. Evans, Geoffrey M T. Foley, Yonn K. Rasmussen, Edward F. Grabowski, Liang-Bih Lin
  • PHOTOCONDUCTORS CONTAINING KETAL OVERCOATS
    Publication number: 20090162766
    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 an overcoat, and where the overcoat contains at least one of ketal. In embodiments the overcoat layer may include ?-hydroxyketone, ?-diketone, or mixtures thereof.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, John F. Yanus, Kenny-Tuan Dinh, Kent J. Evans
  • Imaging member
    Patent number: 7527903
    Abstract: A flexible imaging member which does not require the use of an anti-curl back coating is disclosed herein. The flexible imaging member has a layer comprising two charge transport molecules dispersed in a film-forming polymer binder. The first charge transport molecule is a biphenyl amine, terphenyl diamine, or bis(triarylamine) stilbene. The second charge transport molecule is a bis(triarylamine), tri-p-tolylamine, or triphenylamine. The weight ratio of second charge transport molecule to first charge transport molecule is from about 90:10 to about 67:33. Trifluoro acetic acid is also added to the layer containing the charge transport material.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: May 5, 2009
    Assignee: Xerox Corporation
    Inventors: Kathleen M. Carmichael, Kent J. Evans, Kathy Lippman, legal representative, Satish Parikh, Donald Sullivan
  • PHOSPHONIUM CONTAINING PHOTOGENERATING LAYER PHOTOCONDUCTORS
    Publication number: 20090092914
    Abstract: A photoconductor that includes, for example, a supporting substrate, a phosphonium salt containing photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Daniel V. Levy, Liang-Bih Lin
  • PHOSPHONIUM CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090092915
    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 the at least one charge transport layer contains at least one phosphonium salt.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Daniel V. Levy
  • ADDITIVE CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090092911
    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 where the charge transport layer contains at least one of an ammonium salt.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Andronique Ioannidis
  • ADDITIVE CONTAINING PHOTOGENERATING LAYER PHOTOCONDUCTORS
    Publication number: 20090092913
    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 where the photogenerating layer contains an ammonium salt, an imidazolium salt, or mixtures thereof.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Sherri A. Colon, Dale S. Renfer
  • IMIDAZOLIUM SALT CONTAINING CHARGE TRANSPORT LAYER PHOTOCONDUCTORS
    Publication number: 20090092912
    Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the at least one charge transport layer contains at least one imidazolium salt.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Edward F. Grabowski, Kent J. Evans, Dale S. Renfer
  • Polyphenyl ether phosphate containing photoconductors
    Patent number: 7507510
    Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl ether of the formula wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and n is from about 1 to about 10, and a thiophosphate.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: March 24, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
  • Thiophosphate containing photoconductors
    Patent number: 7498108
    Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer, and wherein said photogenerating layer contains at least one thiophosphate.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: March 3, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Satchidanand Mishra, Kent J. Evans, J. Robinson Cowdery-Corvan, Anthony M. Horgan, Geoffrey M T. Foley, Kathleen M. Carmichael, Liang-Bih Lin
  • Thiophosphate and antioxidant containing photoconductors
    Patent number: 7491480
    Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the at least one charge transport layer contains at least one thiophosphate.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: February 17, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Satchidanand Mishra, Kent J. Evans, J. Robinson Cowdery-Corvan, Anthony M. Horgan, Geoffrey M T. Foley, Kathleen M. Carmichael, Liang-Bih Lin
  • Titanyl phthalocyanine photoconductors
    Patent number: 7485398
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component wherein the at least one charge transport component is comprised of aryl amine molecules of the formula wherein X and Y are each independently alkyl, alkoxy, aryl, a halogen, and wherein the photogenerating layer contains a titanyl phthalocyanine prepared by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the mixture comprising the dissolved Type I titanyl phthalocyanine to a solution comprising an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with monohalobenzene.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: February 3, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, John F. Yanus, Satish R. Parikh, Anthony M. Horgan, Kent J Evans, Geoffrey M T. Foley, Satchidanand Mishra, Markus R. Silvestri, J. Robinson Cowdery-Corvan, David M. Skinner, Edward F. Grabowski, Kathleen M. Carmichael, Yonn K. Rasmussen, Donald J. Goodman, Liang-Bih Lin
  • Ether and thiophosphate containing photoconductors
    Patent number: 7479358
    Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one C-ether of the formula wherein R1, R2, R3 and R4 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and the sum of n plus m (n+m) is from about 1 to about 10, and a thiophosphate.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: January 20, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
  • Polyphenyl thioether and antioxidant containing photoconductors
    Patent number: 7476478
    Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer of at least one charge transport component, at least one polyphenyl thioether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen mixtures thereof, and n is a number of, for example, from about 1 to about 10.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: January 13, 2009
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin