Patents by Inventor Markus R. Silvestri

Markus R. Silvestri 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: 8053151
    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 photogenerating layer contains a suitable phosphonate.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 8, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Markus R Silvestri, J. Robinson Cowdery-Corvan, David M Skinner, Jean D Van Epps, Jr.
  • Patent number: 7989126
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer, and where the at least one charge transport layer and the photogenerating layer contain a metal mercaptoimidazole.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 2, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Markus R Silvestri, Sherri A Colon, Daniel V Levy
  • 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
  • Publication number: 20110086299
    Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising a removable protective outer layer which comprises light-absorbing material which substantially prevents any light absorption by the overcoat layer. Thus, the light-absorbing material reduces the intrinsic light shock suffered by conventional overcoat layers without negatively impacting electrical properties of the overcoat layer while improving print quality.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 14, 2011
    Applicant: XEROX CORPORATION
    Inventors: Markus R. Silvestri, Johann Junginger, Vladislav Skorokhod
  • Patent number: 7862967
    Abstract: A photoconductor that includes a supporting substrate, a first photogenerating layer, a second photogenerating layer and at least one charge transport layer. The first photogenerating layer contains, for example, a phthalocyanine pigment, and the second photogenerating layer contains a different phthalocyanine pigment than the first photogenerating layer phthalocyanine.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: January 4, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Markus R. Silvestri, Kent J. Evans, Daniel V. Levy, Michael A. Morgan, M. John Hinckel, Liang-Bih Lin
  • Patent number: 7851551
    Abstract: Disclosed is a process for the preparation of poly(vinylbenzyl alcohol) by, for example the hydrolysis of poly(vinylbenzyl acetate) in the presence of a basic catalyst in an organic solvent.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: December 14, 2010
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Damodar M. Pai, John F. Yanus, Markus R. Silvestri, Kenny-Tuan T Dinh, Yuhua Tong
  • 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
  • Patent number: 7811728
    Abstract: An imaging member including a substrate; thereover a charge generating layer; thereover a first charge transport layer comprising a small molecule charge transport material and a polymeric component selected from the group consisting of polyarylamine polyester, polyacylamine, and mixtures and combinations thereof; and a second charge transport layer disposed over the first charge transport layer, the second charge transport layer comprising a small molecule charge transport material and a binder, wherein the second charge transport layer is free of polyarylamine polyester and polyacylamine.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: October 12, 2010
    Assignee: Xerox Corporation
    Inventors: David M. Skinner, John F. Yanus, Markus R. Silvestri, M. John Hinckel, Kenny-Tuan T. Dinh, Susan VanDusen, Satish Parikh, J. Robinson Cowdery-Corvan
  • Publication number: 20100253358
    Abstract: In the illustrated embodiment of the invention a scanning system is provided for scanning a chargeable surface for latent image detection. The chargeable surface is charged to a first potential, and a scanner probe is charged to a second potential within a predetermined potential difference from the first potential. The scanner probe is oscillated at a selected frequency and reads or measures the oscillation current that is induced from the oscillation and detects any latent images or other electrostatic distributions on the chargeable surface. A processor processes the probe measurements for determining the potential of a latent image on the chargeable surface based on the scanner probe readings.
    Type: Application
    Filed: April 7, 2009
    Publication date: October 7, 2010
    Applicant: XEROX CORPORATION
    Inventors: Johann Junginger, Markus R. Silvestri
  • 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: 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: 7754404
    Abstract: The presently disclosed embodiments are directed to overcoat layers useful in electrostatography. More particularly, the embodiments pertain to an electrostatographic imaging member with an improved overcoat layer including a polymeric binder that lowers the surface energy involved and reduces friction.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: July 13, 2010
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Kathleen M. Carmichael, Anthony M. Horgan, Markus R. Silvestri, Satish Parikh, Edward F. Grabowski, Kenny-tuan Dinh, Richard L. Post, Donald J. Goodman
  • 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: 7704658
    Abstract: Imaging members useful in electrostatographic apparatuses, including printers, copiers, other reproductive devices, and digital apparatuses. More particularly, imaging members having nano polymeric gel particles embedded into one or more layers of the imaging member that provide for increased mechanical strength and improved wear.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: April 27, 2010
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Yuhua Tong, Kathleen Carmichael, Markus R. Silvestri, Susan Vandusen, Chieh-Min Cheng, Huoy-Jen Yuh, Cindy Chen, Lanhui Zhang
  • Publication number: 20090325091
    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 photogenerating layer contains a suitable phosphonate.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Markus R. Silvestri, J. Robinson Cowdery-Corvan, David M. Skinner, Jean D. Van Epps, JR.
  • Publication number: 20090274965
    Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer, and where the at least one charge transport layer and the photogenerating layer contain a metal mercaptoimidazole.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Markus R. Silvestri, Sherri A. Colon, Daniel V. Levy
  • 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
  • Publication number: 20090246666
    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: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Markus R. Silvestri, Dale S. Renfer, Ryan J. Ehmann