Patents by Inventor Nancy Belknap

Nancy Belknap 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: 20160154327
    Abstract: Described herein is a photoreceptor having a substrate, a charge generating layer, a charge transport layer. The charge transport layer includes a polycarbonate-polyester copolymer binder and at least one charge transport material.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 2, 2016
    Inventors: Jin Wu, Kenny-tuan T. Dinh, Nancy Belknap, Lanhui Zhang, Than Sorn, Helen R. Cherniack, Lin Ma, Linda L. Ferrarese, Dennis J. Prosser, Marc J. Livecchi, Robert W. Hedrick
  • Patent number: 8142968
    Abstract: The disclosed embodiments are directed to an electrophotographic photoreceptor having a release layer. More particularly, the disclosure relates to an electrophotographic photoreceptor having a release layer which comprises an organosilane compound coated over the substrate surface. Other embodiments include methods for coating layer removal using a specifically configured electrophotographic photoreceptor having a release layer and methods for recovering a charge transport molecule.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Robert P. Altavela, Yuhua Tong, Edward F. Grabowski, Kent J. Evans, Adilson Ramos, Nancy Belknap, Helen R. Cherniack
  • Publication number: 20100323288
    Abstract: The disclosed embodiments are directed to an electrophotographic photoreceptor having a release layer. More particularly, the disclosure relates to an electrophotographic photoreceptor having a release layer which comprises an organosilane compound coated over the substrate surface. Other embodiments include methods for coating layer removal using a specifically configured electrophotographic photoreceptor having a release layer and methods for recovering a charge transport molecule.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 23, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert P. Altavela, Yuhua Tong, Edward F. Grabowski, Kent J. Evans, Adilson Ramos, Nancy Belknap, Helen R. Cherniack
  • Patent number: 7799140
    Abstract: The disclosed embodiments are directed to processes for removing photoreceptor coatings from a substrate, wherein the photoreceptor coatings disposed over a substrate of an electrophotographic photoreceptor. More specifically, the invention discloses a photoreceptor coatings removal process comprises subjecting an electrophotographic photoreceptor to a stripping solution that separates the coatings from the substrate.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: September 21, 2010
    Assignee: Xerox Corporation
    Inventors: Robert P. Altavela, Yuhua Tong, Edward F. Grabowski, Kent J. Evans, Adilson Ramos, Nancy Belknap, Helen R. Cherniack
  • Publication number: 20100055588
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrostatographic, including digital, apparatuses. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a specific mixture of high mobility molecules in the charge transport layer which exhibits reduced propensity for crystallization while maintaining or improving electrical performance.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 4, 2010
    Applicant: XEROX CORPORATION
    Inventors: Nancy Belknap, John F. Yanus, Helen R. Cherniack, David M. Skinner, Kent J. Evans, Edward F. Grabowski
  • Patent number: 7645555
    Abstract: An electrophotographic photoreceptor and method for forming a photoreceptor is disclosed which is provided with an anticorrosion layer on the interface between the supporting substrate surface and the undercoat layer. The photoreceptor has a high mechanical strength and minimizes defects in print for longer periods of time.
    Type: Grant
    Filed: April 8, 2009
    Date of Patent: January 12, 2010
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Philip G. Perry, Andronique Ioannidis, William G. Herbert, David M. Skinner, Jin Wu, Kendra Michele Giza, Nancy Belknap, Yonn Rasmussen, Geoffrey M. T. Foley, John F. Yanus, Jennifer Y. Hwang, Robert P. Altavela
  • Publication number: 20090214978
    Abstract: An electrophotographic photoreceptor and method for forming a photoreceptor is disclosed which is provided with an anticorrosion layer on the interface between the supporting substrate surface and the undercoat layer. The photoreceptor has a high mechanical strength and minimizes defects in print for longer periods of time.
    Type: Application
    Filed: April 8, 2009
    Publication date: August 27, 2009
    Applicant: XEROX CORPORATION
    Inventors: Liang-Bih LIN, Philip G. PERRY, Andronique IOANNIDIS, William G. HERBERT, David M. SKINNER, Jin WU, Kendra Michele GIZA, Nancy BELKNAP, Yonn RASMUSSEN, Geoffrey M. T. FOLEY, John F. YANUS, Jennifer Y. HWANG, Robert P. ALTAVELA
  • Patent number: 7544453
    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 a photoreceptor that incorporates copolymers to that provide electron transporting functionality to improve image quality.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: June 9, 2009
    Assignee: Xerox Corporation
    Inventors: T. Edwin Freeman, Nancy Belknap, John F. Yanus
  • Patent number: 7534535
    Abstract: An electrophotographic photoreceptor is disclosed which is provided with an anti-corrosion layer on the interface between the substrate surface and hole blocking layer. The photoreceptor has high mechanical strength and minimizes defects in print for longer periods of time.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: May 19, 2009
    Assignee: Xerox Corporation
    Inventors: Liang-Bih Lin, Philip G. Perry, Andronique Ioannidis, William G. Herbert, David M. Skinner, Jin Wu, Kendra Michele Giza, Nancy Belknap, Yonn Rasmussen, Geoffrey M. T. Foley, John F. Yanus, Jennifer Y. Hwang, Robert P. Altavela
  • Publication number: 20090017389
    Abstract: The presently disclosed embodiments are directed to charge transport layers useful in electrostatography. More particularly, the embodiments pertain to an improved electrostatographic imaging member having a specific photoreceptor material package comprising a thick conductive undercoat layer, a charge generation layer, a long life charge transport layer, and an optional overcoat layer.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 15, 2009
    Applicant: Xerox Corporation
    Inventors: Nancy Belknap, Jennifer Hwang, Robert Altavela
  • 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: 7435518
    Abstract: This invention relates to a method for improving chemical stability in a metal or metallized substrate, such as an aluminum substrate, of an electrophotographic-imaging member by treating the substrate with a composition containing a rare-earth metal.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: October 14, 2008
    Assignee: Xerox Corporation
    Inventors: John Graham, Nancy Belknap, Kendra M. Giza, Andronique Ioannidis, Michael Zak, Sandra Gardner, Nan-Xing Hu, Timothy P. Bender, Ah-Mee Hor
  • Publication number: 20070082283
    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 a photoreceptor that incorporates copolymers to that provide electron transporting functionality to improve image quality.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 12, 2007
    Applicant: Xerox Corporation
    Inventors: T. Freeman, Nancy Belknap, John Yanus
  • Publication number: 20070077508
    Abstract: This invention relates to a method for improving chemical stability in a metal or metallized substrate, such as an aluminum substrate, of an electrophotographic-imaging member by treating the substrate with a composition containing a rare-earth metal.
    Type: Application
    Filed: October 3, 2005
    Publication date: April 5, 2007
    Applicant: XEROX CORPORATION
    Inventors: John Graham, Nancy Belknap, Kendra Giza, Andronique Ioannidis, Michael Zak, Sandra Gardner, Nan-Xing Hu, Timothy Bender, Ah-Mee Hor
  • Publication number: 20060263708
    Abstract: Provided is an imaging member comprising a substrate, an undercoat layer (UCL), a charge generation layer, a charge transport layer, and an optional overcoat layer. The undercoat layer is formed from a single-phase UCL coating formulation comprising an organic titanate, a polymer containing active hydrogen, and an aminosilane. The UCL formulation has improved properties such as stability, processing convenience, and longer pot life etc. The UCL formulation can be used to manufacture an imaging member such as photoreceptor with improved properties such as stable, thick UCL coating, resistance to electrical failure, and PIDC independency on UCL thickness etc.
    Type: Application
    Filed: May 20, 2005
    Publication date: November 23, 2006
    Inventors: Jin Wu, Yuhua Tong, Jennifer Hwang, Liang-bih Lin, Andronique Ioannidis, Nancy Belknap, Timothy O'Brien, Anthony Uttaro
  • Publication number: 20060257768
    Abstract: Photogenerating layers of photoreceptors are provided utilizing a photogenerating component/resin dispersion formed in a low boiling point solvent.
    Type: Application
    Filed: May 12, 2005
    Publication date: November 16, 2006
    Inventors: Cindy Chen, Lanhui Zhang, Nancy Belknap, Ed Radigan
  • Publication number: 20060222978
    Abstract: An imaging member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a metal alkyoxide, an amino siloxane, and at least one polymer binder containing epoxy groups.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 5, 2006
    Inventors: Yuhua Tong, Nancy Belknap, John Yanus, Jin Wu
  • Publication number: 20060127781
    Abstract: A process for preparing a charge generating layer comprising dispersing photoconductive phthalocyanine particles in a polymer matrix, the matrix comprising a polymeric film-forming reaction product of vinyl chloride, vinyl acetate, maleic acid, and hydroxyalkyl acrylate, in a solution of n-butyl acetate and methyl isobutyl ketone. An electrophotographic imaging member is also prepared comprising a charge generating layer prepared according to this process.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 15, 2006
    Inventors: Lanhui Zhang, Cindy Chen, Nancy Belknap, Francisco Lopez, Liang-Bih Lin, Andronique Ioannidis, Ed Radigan, John Chambers
  • Publication number: 20060110670
    Abstract: An electrophotographic photoreceptor is disclosed which is provided with a substrate with a coating with a metal oxide as an interface between the substrate and photoconductive layers. A process for applying the metal oxide layer to the substrate is also disclosed.
    Type: Application
    Filed: November 23, 2004
    Publication date: May 25, 2006
    Inventors: Jin Wu, Yuhua Tong, Geoffrey Foley, Liang-Bih Lin, Andronique Ioannidis, Nancy Belknap
  • Publication number: 20060110671
    Abstract: An electrophotographic photoreceptor is disclosed which is provided with an anti-corrosion layer on the interface between the substrate surface and hole blocking layer. The photoreceptor has high mechanical strength and minimizes defects in print for longer periods of time.
    Type: Application
    Filed: November 23, 2004
    Publication date: May 25, 2006
    Inventors: Liang-Bih Lin, Philip Perry, Andronique Ioannidis, William Herbert, David Skinner, Jin Wu, Kendra Giza, Nancy Belknap, Yonn Rasmussen, Geoffrey Foley, John Yanus, Jennifer Hwang, Robert Altavela