Patents by Inventor Michael E. Zak

Michael E. Zak 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: 8268520
    Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyalkylene glycol benzoate and a fluorinated polymer.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: September 18, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Linda L Ferrarese, Marc J Livecchi, Edward C Savage, Michael E Zak
  • Patent number: 8173342
    Abstract: A photoconductor that includes a photogenerating layer, and a charge transport layer containing a charge transport component, and a core shell component, and wherein the core is comprised of a metal oxide and the shell is comprised of silica.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: May 8, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Linda L Ferrarese, Marc J Livecchi, Edward C Savage, Michael E Zak
  • Patent number: 8168357
    Abstract: A photoconductor that includes a photogenerating layer and a charge transport layer containing a charge transport component, a fluorinated polymer, and a core shell component, and wherein the core is comprised of a metal oxide and the shell is comprised of silica.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: May 1, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Linda L Ferrarese, Marc J Livecchi, Edward C Savage, Michael E Zak
  • Publication number: 20110294054
    Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyalkylene glycol benzoate and a fluorinated polymer.
    Type: Application
    Filed: May 26, 2010
    Publication date: December 1, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Linda L. Ferrarese, Marc J. Livecchi, Edward C. Savage, Michael E. Zak
  • Publication number: 20110053066
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, a charge transport layer or layers, and an overcoating layer containing a crosslinked mixture of a POSS component, a melamine polymer, and a charge transport like a hole transport compound.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Jennifer A. Coggan, Marc J. Livecchi, Edward C. Savage, Michael E. Zak
  • Patent number: 7897314
    Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, a charge transport layer or layers, and an overcoating layer containing a crosslinked mixture of a POSS component, a melamine polymer, and a charge transport like a hole transport compound.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: March 1, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Kenny-Tuan T Dinh, Jennifer A Coggan, Marc J Livecchi, Edward C Savage, Michael E Zak
  • Publication number: 20100330476
    Abstract: A photoconductor that includes a photogenerating layer and a charge transport layer containing a charge transport component, a fluorinated polymer, and a core shell component, and wherein the core is comprised of a metal oxide and the shell is comprised of silica.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Linda L. Ferrarese, Marc J. Livecchi, Edward C. Savage, Michael E. Zak
  • Publication number: 20100330477
    Abstract: A photoconductor that includes a photogenerating layer, and a charge transport layer containing a charge transport component, and a core shell component, and wherein the core is comprised of a metal oxide and the shell is comprised of silica.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 30, 2010
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Kenny-Tuan T. Dinh, Linda L. Ferrarese, Marc J. Livecchi, Edward C. Savage, Michael E. Zak
  • Patent number: 7531110
    Abstract: A unique solvent system adapted for high speed overcoat applications is disclosed. The solvent system comprises methyl alcohol and monochlorobenzene in a weight ratio of about 6:1 to about 1.5:1, respectively.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: May 12, 2009
    Assignee: Xerox Corporation
    Inventors: Raymond K. Crandall, John F. Yanus, Ed J. Radigan, Michael E. Zak
  • Patent number: 7524596
    Abstract: Backing layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The backing layers, which may be anti-curl backing layers, include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the backing layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: April 28, 2009
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, Nan-Xing Hu, Michael E. Zak
  • Publication number: 20080166644
    Abstract: Backing layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The backing layers, which may be anti-curl backing layers, include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the backing layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
    Type: Application
    Filed: December 13, 2006
    Publication date: July 10, 2008
    Applicant: Xerox Corporation
    Inventors: Timothy P. Bender, Nan-Xing Hu, Michael E. Zak
  • Patent number: 7267917
    Abstract: A charge transport layer composition for a photoreceptor includes at least a binder, at least one arylamine charge transport material, e.g., N,N?-diphenyl-N,N?-bis(3-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine, and at least one polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups. The charge transport layer forms a layer of photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: September 11, 2007
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, Michael E. Zak, John F. Yanus, Min-Hong Fu, David M. Skinner, Kathleen M. Carmichael, Colleen A. Helbig, Dale S. Renfer, John A. Bergfjord, Sr., Susan M. Van Dusen, Anthony M. Horgan, Jin Wu, Steven M. Sterling
  • Patent number: 7192678
    Abstract: A charge transport layer composition for a photoreceptor includes at least a binder and a charge transport material of about 100% to about 40% by weight of a total of the charge transport layer N,N-dimethylphenyl)-4-biphenylamine and about 0% to about 60% N,N?-dephenyl-N,N?-bis(3-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine, and wherein the total charge transport material in the composition is 48% or less of the total solids of the composition. The charge transport layer forms a layer of a photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: March 20, 2007
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, Michael E. Zak, John F. Yanus, Min-Hong Fu, David M. Skinner, Kathleen M. Carmichael, Colleen A. Helbig, Dale S. Renfer, John A. Bergfjord, Sr., Susan M. Van Dusen
  • Patent number: 6372033
    Abstract: Powder mixtures and a method of forming and shaping the mixtures. The method involves compounding the components of powder materials, binder, solvent for the binder, surfactant, and non-solvent with respect to at least the binder, the solvent, and the powder materials. The non-solvent is lower in viscosity than the binder combined with the solvent. The solvent is present in an amount that is less than the amount that would be present otherwise. The components are mixed and plasticized, and shaped to form a green body. The choice of components results in improved wet green strength in the green body. The method is especially useful for extrusion processing of aqueous binder systems such as water and cellulose ethers and hydrophobic non-solvents, to form structures such as honeycombs. In the body, the ratio, upon subsequent firing, of the isostatic strength to the A-axis strength is at least about 20% higher than in bodies made without the mixture composition of the invention.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: April 16, 2002
    Assignee: Corning Incorporated
    Inventors: Devi Chalasani, Michael Fischer, Christopher J. Malarkey, Kevin R. McCarthy, Brian E. Stutts, Michael E. Zak
  • Patent number: 6113829
    Abstract: A method for forming and shaping powder mixtures involves compounding, homogenizing, and plasticizing components to form a mixture. The components are powder materials, binder, solvent for the binder, surfactant, and non-solvent with respect to at least the binder, the solvent, and the powder materials. The non-solvent is lower in viscosity than the binder combined with the solvent. The components are chosen to result in improved wet green strength in the subsequently formed green body. The compounding is done by the steps of dry-mixing the powder material, surfactant and binder to form a uniform blend, adding the solvent to the resulting dry blend, and thereafter adding the non-solvent to the blend. The mixture is shaped by passing it through a low to moderate shear extruder, and then through a die to form a green body. The compounding and shaping steps are carried out at a temperature of no greater than ambient temperature. The method is especially suitable for RAM extrusion.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: September 5, 2000
    Assignee: Corning Incorporated
    Inventors: Andrea W. Bookbinder, Devi Chalasani, Gregory P. Dillon, Kevin R. McCarthy, Brian E. Stutts, Michael E. Zak
  • Patent number: 6080345
    Abstract: Powder mixtures and a method of forming and shaping the mixtures. The method involves compounding the components of powder materials, binder, solvent for the binder, surfactant, and non-solvent with respect to at least the binder, the solvent, and the powder materials. The non-solvent is lower in viscosity than the binder combined with the solvent. The solvent is present in an amount that is less than the amount that would be present otherwise. The components are mixed and plasticized, and shaped to form a green body. The choice of components results in improved wet green strength in the green body. The method is especially useful for extrusion processing of aqueous binder systems such as water and cellulose ethers and hydrophobic non-solvents, to form structures such as honeycombs. In the body, the ratio, upon subsequent firing, of the isostatic strength to the A-axis strength is at least about 20% higher than in bodies made without the mixture composition of the invention.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: June 27, 2000
    Assignee: Corning Incorporated
    Inventors: Devi Chalasani, Michael Fischer, Christopher J. Malarkey, Kevin R. McCarthy, Brian E. Stutts, Michael E. Zak
  • Patent number: 5811048
    Abstract: A method and apparatus for homogenizing a flow stream of plasticized material supplied from an extruder, to reduce viscosity gradients causing defects in extruded products, wherein a flow inverting homogenizer positioned in the flow stream and incorporating a plurality of criss-crossing channels for simultaneously transferring portions of the flow stream from central to peripheral flow stream locations and other portions of the flow stream from peripheral to central flow stream locations.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: September 22, 1998
    Assignee: Corning Incorporated
    Inventors: Rodney G. Dunn, David R. Treacy, Jr., Michael E. Zak