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).

  • Publication number: 20090246658
    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 photogenerating layer contains a thiuram sulfide additive.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Liang-Bih Lin, Daniel V. Levy, Jin Wu, Markus R. Silvestri
  • Publication number: 20090246659
    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: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: XEROX CORPORATION
    Inventors: Liang-Bih Lin, Daniel V. Levy, Dale S. Renfer, Markus R. Silvestri
  • Patent number: 7592111
    Abstract: An electrostatographic imaging member formulated with a liquid carbonate is provided. The imaging electrostatographic member exhibits improved service life.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: September 22, 2009
    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
  • Patent number: 7572561
    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: February 22, 2006
    Date of Patent: August 11, 2009
    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
  • Publication number: 20090162637
    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: Application
    Filed: October 22, 2008
    Publication date: June 25, 2009
    Applicant: 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: 7517624
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an electrostatographic imaging member with an improved charge transport layer including a polymeric binder that lowers the surface energy involved and reduces friction.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: April 14, 2009
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Kathleen M. Carmichael, Satish Parikh, Anthony M. Horgan, Markus R. Silvestri, Edward F. Grabowski, Kenny-tuan Dinh, Richard L. Post, Donald J. Goodman
  • 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
  • Publication number: 20090047588
    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: Application
    Filed: August 14, 2007
    Publication date: February 19, 2009
    Applicant: XEROX CORPORATION
    Inventors: John F. Yanus, Kenny-Tuan Dinh, Markus R. Silvestri, Dale S. Renfer
  • 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
  • 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
  • Publication number: 20080318146
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an electrostatographic imaging member comprising a charge transport layer that exhibits improved charge mobility transport and comprises novel terphenyl compounds.
    Type: Application
    Filed: June 21, 2007
    Publication date: December 25, 2008
    Applicant: XEROX CORPORATION
    Inventors: Nancy Belknap, John F. Yanus, Markus R. Silvestri, Helen R. Cherniack, Edward Grabowski
  • Patent number: 7468229
    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, and n is a number of from about 1 to about 10; and wherein a thiophosphate is contained in the photogenerating layer.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: December 23, 2008
    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
  • Patent number: 7462432
    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, aryl, alkoxy, and halogen; n is a number of from about 1 to about 10; and a thiophosphate.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: December 9, 2008
    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
  • Publication number: 20080286669
    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: Application
    Filed: May 15, 2007
    Publication date: November 20, 2008
    Inventors: Jin Wu, Markus R. Silvestri, Kent J. Evans, Daniel V. Levy, Michael A. Morgan, M. John Hinckel, Liang-Bih Lin
  • Patent number: 7452643
    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 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 n is a number of from about 1 to about 10; and wherein a thiophosphate is contained in the photogenerating layer.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: November 18, 2008
    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
  • Patent number: 7445876
    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 an optional antioxidant; and wherein a thiophosphate is contained in the photogenerating layer.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: November 4, 2008
    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
  • Patent number: 7410738
    Abstract: A photoconductive imaging member containing an optional supporting substrate, an optional hole blocking layer thereover, a photogenerating layer and a charge transport layer, and wherein the charge transport layer contains a phenol of, for example, the alternative formulas
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: August 12, 2008
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Kenny-Tuan T. Dinh, Markus R. Silvestri, H. Bruce Goodbrand, M. John Hinckel, Dale S. Renfer, Yuhua Tong
  • Patent number: 7384717
    Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, a charge transport layer, and an overcoating layer, the overcoating layer including a cured polyester polyol or cured acrylated polyol film forming resin and a charge transport material.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: June 10, 2008
    Assignee: Xerox Corporation
    Inventors: Kenny-Tuan T Dinh, John F Yanus, Kendra M Giza, James R Backus, T Edwin Freeman, Markus R Silvestri, Michael L Mehan
  • Publication number: 20080131799
    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: Application
    Filed: December 1, 2006
    Publication date: June 5, 2008
    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
  • Patent number: 7344809
    Abstract: An imaging member having a charge transport layer is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein the upper or additional transport layer(s) comprise a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be the same or different from that included in the additional charge transport layers. The charge transport compound in one or more of the layers is dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: March 18, 2008
    Assignee: Xerox Corporation
    Inventors: Anthony M. Horgan, Robert C. U. Yu, Satchidanand Mishra, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie, Houy Jen Yuh, Timothy J. Fuller, John F. Yanus, Markus R. Silvestri, Yuhua Tong, Dale Renfer, Kenny-Tuan Tran Dinh, Geoffrey M.T. Foley