Patents by Inventor John F. Yanus

John F. Yanus 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: 7514191
    Abstract: An imaging member is disclosed with a charge transport layer comprising a dimethyl terphenyl diamine having the structure of Formula (I): wherein n is an integer from 0 to about 18. The resulting imaging member has enhanced performance properties.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: April 7, 2009
    Assignee: Xerox Corporation
    Inventors: John F. Yanus, Markus 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: 7476479
    Abstract: An imaging member includes a substrate, an intermediate layer, and a photoconductor layer, where the intermediate layer includes hydrolyzed semi-conductive nanoparticles, such as hydrolyzed semi-conductive nanoparticles formed by reaction of a metal alkoxide and an amine.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: January 13, 2009
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, John J. Wilbert, John F. Yanus, Jin Wu, Jennifer Y. Hwang
  • 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
  • Publication number: 20080299472
    Abstract: A coating composition that contains a mixture of an alkyl alcohol, a glycol monoether, a charge transport component, a crosslinking component, and at least one hydroxyl containing polymer, and a photoconductor thereof with a supporting substrate, a photogenerating layer, and at least one charge transport layer, and an overcoating layer in contact with and contiguous to the charge transport layer, and which overcoating is comprised of a mixture of an alkyl alcohol, a glycol monoether, an acrylated polyol, a polyalkylene glycol, a crosslinking component, and a charge transport component.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 4, 2008
    Inventors: Kathy L. DeJong, Nan-Xing Hu, Hany Aziz, Jennifer A. Coggan, Johann Junginger, Ah-Mee Hor, John F. Yanus, Kenny-Tuan Dinh
  • Patent number: 7452642
    Abstract: Hole transport polymers are disclosed. The polymers include modified triarylamine groups attached to a polymeric material such as, for example, poly(vinyl butyral). The polymers are particularly suited for use in multilayered photoreceptors. The polymers can be readily synthesized. Also disclosed are photoreceptors containing one or more layers that include the noted polymers.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: November 18, 2008
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, John F. Yanus
  • Publication number: 20080193866
    Abstract: An imaging member including an optional supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and an overcoating layer in contact with and contiguous to the charge transport, and which overcoating is comprised of an acrylated polyol, a polyalkylene glycol, a crosslinking agent, a hydroxy functionalized siloxane and a charge transport component.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 14, 2008
    Inventors: Kenny-Tuan Dinh, John F. Yanus, Raymond K. Crandall, Edward J. Radigan
  • 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
  • Publication number: 20080138724
    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: Application
    Filed: August 9, 2007
    Publication date: June 12, 2008
    Applicant: Xerox Corporation
    Inventors: Nancy L. Belknap, John F. Yanus, Dale S. Renfer, Anthony M. Horgan, Kendra M. Giza
  • 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
  • Publication number: 20080107983
    Abstract: A photoconductor containing a thiophosphate photogenerating layer, and at least one charge transport layer, and a top polymeric overcoating layer in contact with and contiguous to a charge transport layer.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan, Kathleen M. Carmichael
  • Publication number: 20080107978
    Abstract: An imaging member has a crosslinked overcoat layer. The overcoat layer is formed from an overcoat solution comprising a trisilanol polyhedral oligomeric polysilsesquioxane; two crosslinking agents; a hole transport molecule; an acid catalyst; and an alcohol solvent. The overcoat layer provides excellent wear resistance at a low cost.
    Type: Application
    Filed: November 8, 2006
    Publication date: May 8, 2008
    Inventors: John F. Yanus, Kenny-Tuan Tran Dinh, Jin Wu
  • Publication number: 20080107979
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, at least one silanol containing charge transport layer, and a top overcoating layer in contact with and contiguous to the charge transport layer.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan
  • Publication number: 20080107985
    Abstract: A photoconductor containing an optional supporting substrate, a silanol containing photogenerating layer, at least one charge transport layer, and a top overcoating layer in contact with and contiguous to the charge transport layer.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan
  • Publication number: 20080107984
    Abstract: A photoconductor containing an optional supporting substrate, a containing photogenerating layer, at least one thiophosphate containing charge transport layer, and a top overcoating crosslinked polymer layer in contact with and contiguous to the charge transport layer.
    Type: Application
    Filed: November 7, 2006
    Publication date: May 8, 2008
    Inventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan, Kathleen M. Carmichael
  • Publication number: 20080070137
    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: Application
    Filed: September 14, 2006
    Publication date: March 20, 2008
    Inventors: John F. Yanus, Kenny-Tuan T. Dinh, Dale S. Renfer, Nancy L. Belknap, Anthony M. Horgan
  • 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
  • Publication number: 20080057423
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer comprised of a chelating agent and a titanyl phthalocyanine; and at least one charge transport layer comprised of at least one charge transport component; and wherein a silanol is present in at least one of the photogenerating layer and charge transport layer, and wherein said at least one charge transport component is comprised of wherein X and Y are independently a suitable hydrocarbon, a halogen, or mixtures thereof.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 6, 2008
    Inventors: Jin Wu, John F. Yanus, Anthony M. Horgan, Liang-Bih Lin