Patents by Inventor Dale S. Renfer

Dale S. Renfer 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: 8859667
    Abstract: Transparent or semi-transparent, electrically conductive anti-curl back coating composite for electrophotographic imaging member comprising a carbon nanotube complex and a polycarbonate binder are described along with processes for preparing them.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: October 14, 2014
    Assignee: Xerox Corporation
    Inventors: Edward F. Grabowski, Kock-Yee Law, Markus R. Silvestri, Donald J. Goodman, Dale S. Renfer, Ryan J. Ehmann, Kathleen M. Carmichael, Scott J. Griffin, Jonathan H. Herko, Michael S. Roetker
  • Patent number: 8098925
    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 an improved photoreceptor that exhibits little to no response to injected charges and demonstrates excellent ghosting properties.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: January 17, 2012
    Assignee: Xerox Corporation
    Inventors: Markus R. Silvestri, Jin Wu, M. John Hinckel, David M. Skinner, Kent J. Evans, Robert J. Meyer, Kathleen M. Carmichael, Dale S. Renfer
  • Patent number: 8062815
    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: Grant
    Filed: October 9, 2007
    Date of Patent: November 22, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Dale S Renfer
  • Patent number: 8062823
    Abstract: The presently disclosed embodiments are directed to an improved overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer, and a process for making the same including combining a resin having a reactive group selected from the group consisting of hydroxyl, carboxylic acid and amide groups, a melamine formaldehyde crosslinking agent, a formaldehyde scavenger, an acid catalyst, and an alcohol-soluble charge transporting molecule to form an overcoat solution, and subsequently providing the overcoat solution onto the charge transport layer to form an overcoat layer.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: November 22, 2011
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Kenny-Tuan Dinh, Jin Wu, Dale S. Renfer
  • Patent number: 8017294
    Abstract: The presently disclosed embodiments are directed to an improved overcoat for an imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer, and a process for making the same including combining a resin having a reactive group selected from the group consisting of hydroxyl, carboxylic acid and amide groups, a melamine formaldehyde crosslinking agent, a crosslinkable fluoro additive, an acid catalyst, and a crosslinkable, alcohol-soluble charge transport molecule to form an overcoat solution, and subsequently providing the overcoat solution onto the charge transport layer to form an overcoat layer.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: September 13, 2011
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Kenny-Tuan Dinh, Jin Wu, Dale S. Renfer
  • Patent number: 7981579
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one, charge transport layer, such as 1, 2, 3, or 4 layers, and more specifically, 2 layers, and wherein the photogenerating layer contains a thiadiazole.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 19, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Markus R Silvestri, Dale S Renfer, Ryan J Ehmann
  • Patent number: 7964329
    Abstract: An imaging member with a unique overcoat composition adapted for forming protective, scratch-resistant overcoats is disclosed. The overcoat composition comprises a binder component that includes particular proportions of a acrylated polyol and propylene glycol. The overcoat composition also comprises a transport agent and a crosslinking agent.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: June 21, 2011
    Assignee: Xerox Corporation
    Inventors: Kenny-Tuan Dinh, Dale S. Renfer, Kendra M. Giza, Michael L. Mehan, Susan M. Vandusen, Markus R. Silvestri, John F. Yanus
  • Patent number: 7935466
    Abstract: A photoconductor that includes 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 benzothiazolesulfenimide additive.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: May 3, 2011
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Daniel V Levy, Dale S Renfer, Markus R Silvestri
  • Patent number: 7901856
    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: Grant
    Filed: October 9, 2007
    Date of Patent: March 8, 2011
    Assignee: XEROX Corporation
    Inventors: Jin Wu, Edward F Grabowski, Kent J Evans, Sherri A Colon, Dale S Renfer
  • Patent number: 7838186
    Abstract: A photoconductor that includes an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the charge transport layer contains a phenolic chelating additive.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: November 23, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kent J Evans, Sherri A. Colon, Dale S. Renfer
  • Patent number: 7833683
    Abstract: An imaging member including a substrate; a charge generation layer; a charge transport layer containing a mixture including a polymer and charge transport components, wherein the mixture has a glass transition temperature of less than about 70° C.; and an overcoat having a crosslinked polymer network including a resin, charge transport molecules, crosslinking component, an acid catalyst and an optional low surface component, and wherein the resin is a resin selected from the group consisting of polyester and polyol resins, and further wherein the resin has crosslinking sites selected from the group consisting of hydroxyl and carboxy groups.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: November 16, 2010
    Assignee: Xerox Corporation
    Inventors: John F Yanus, Kenny-Tuan Dinh, Markus R Silvestri, Dale S Renfer
  • Publication number: 20100221648
    Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a zinc thione.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 2, 2010
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Markus R. Silvestri, Robert J. Meyer, Dale S. Renfer
  • Patent number: 7781133
    Abstract: A photoconductor that includes, for example, a backing layer, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein the outermost layer of said backing layer is comprised of a self crosslinked acrylic resin and a crosslinkable siloxane component.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: August 24, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Lanhui Zhang, Lin Ma, Dale S Renfer
  • Patent number: 7776499
    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 in contact with the charge transport layer an overcoat layer comprised of a fluorinated poly(oxetane) polymer.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: August 17, 2010
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Lanhui Zhang, Lin Ma, Dale S Renfer
  • Patent number: 7759032
    Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, a charge transport layer, and an overcoating layer, where the overcoating layer includes a terphenyl arylamine dissolved or molecularly dispersed in a polymer binder.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: July 20, 2010
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Kenny-Tuan T. Dinh, Markus R. Silvestri, Yuhua Tong, Dale S. Renfer, T. Edwin Freeman, M. John Hinckel
  • Patent number: 7745082
    Abstract: A photoreceptor drum is disclosed with a charge transport layer comprising a substituted terphenyl diamine having the structure of Formula (I): wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl having from 1 to 10 carbon atoms, halogen, and phenyl; and wherein at least one of R1 and R2 is not hydrogen.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: June 29, 2010
    Assignee: Xerox Corporation
    Inventors: Nancy L. Belknap, John F. Yanus, Dale S. Renfer, Anthony M. Horgan, Kendra M. Giza
  • Publication number: 20100119963
    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 an improved photoreceptor that exhibits little to no response to injected charges and demonstrates excellent ghosting properties.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 13, 2010
    Applicant: XEROX CORPORATION
    Inventors: Markus R. Silvestri, Jin Wu, M. John Hinckel, David M. Skinner, Kent J. Evans, Robert J. Meyer, Kathleen M. Carmichael, Dale S. Renfer
  • Patent number: 7648810
    Abstract: An electrophotographic imaging member comprises a substrate, an electrophotographic imaging layer and an overcoat layer comprising a cross-linkable polymer and a hole transport material, wherein the overcoat layer provides at least one of solvent resistance and hydrocarbon resistance to the electrophotographic imaging layer.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: January 19, 2010
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Kenny-Tuan T. Dinh, Dale S. Renfer, Nancy L. Belknap, Anthony M. Horgan
  • 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: 20090269689
    Abstract: An imaging member with a unique overcoat composition adapted for forming protective, scratch-resistant overcoats is disclosed. The overcoat composition comprises a binder component that includes particular proportions of a acrylated polyol and propylene glycol. The overcoat composition also comprises a transport agent and a crosslinking agent.
    Type: Application
    Filed: July 13, 2009
    Publication date: October 29, 2009
    Applicant: Xerox Corporation
    Inventors: Kenny-Tuan Dinh, Dale S. Renfer, Kendra M. Giza, Michael L. Mehan, Susan M. Vandusen, Markus R. Silvestri, John F. Yanus