Patents by Inventor Yuhua Tong

Yuhua Tong 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: 8273514
    Abstract: The present embodiments are generally directed to an improved imaging member exhibiting various advantages over conventional imaging members. More specifically, the present embodiments are directed to an improved interfacial layer formed from an aqueous-based coating solution which exhibits improved formation and coating properties, such as increased homogeneity and adhesion, and methods for making the same. The aqueous-based coating solution is environment-friendly and avoids the need to use more expensive organic solvents which involve higher safety risks in the manufacturing process.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: September 25, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Edward F. Grabowski, Robert D. Bayley
  • Patent number: 8273512
    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. Embodiments pertain to an improved electrostatographic imaging member comprising an interfacial layer further comprising an opaque semi-crystalline polyester resin that is also a hot-melt adhesive to prevent light transmission to the substrate and thus significantly reduce “plywood effect,” a print quality defect.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: September 25, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Edward F. Grabowski, Jin Wu
  • Publication number: 20120225380
    Abstract: A photoreceptor undercoat containing a sulfonamide facilitates removal of coatings from the substrate.
    Type: Application
    Filed: May 16, 2012
    Publication date: September 6, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack
  • Patent number: 8257892
    Abstract: Embodiments relate generally to an imaging member that facilitates removal of the imaging member coating layers disposed over the imaging member and environmentally or “green” methods for using the same. More specifically, the present embodiments disclose an electrophotographic photoreceptor that includes a specifically formulated undercoat layer that allows easy removal of the photoreceptor layers disposed on top of the undercoat layer. The present embodiments provide a simple yet efficient method for reclaiming recycling or remanufacturing electrophotographic photoreceptors.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 4, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Yuhua Tong, Helen R. Cherniack, Edward F. Grabowski, Kent J. Evans, Nancy L. Belknap
  • Patent number: 8252420
    Abstract: An intermediate transfer member that includes a mixture of a polyamideimide, a polybenzimidazole, and an optional conductive filler.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: August 28, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Dante M. Pietrantoni, Yuhua Tong, Jonathan H. Herko
  • Publication number: 20120211704
    Abstract: Flexible members for use in imaging devices comprise a polymerizable release agent.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 23, 2012
    Applicant: XEROX CORPORATION
    Inventors: Edward F. Grabowski, Yuhua Tong
  • Publication number: 20120207519
    Abstract: An intermediate transfer belt for an electrostatographic device and methods for making the intermediate transfer belt can include the use of polyamide-imide and carbon nanotubes and nanosheets, for example multi-walled carbon nanotubes, single-walled carbon nanotubes, graphene, graphite, and two or more of these as an electrically conductive filler.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 16, 2012
    Applicant: Xerox Corporation
    Inventors: Michael S. Roetker, Francisco J. Lopez, Kyle B. Tallman, Jonathan H. Herko, David W. Martin, Yuhua Tong
  • Publication number: 20120207521
    Abstract: Flexible members for use in imaging devices comprise two layers with the superior or second layer comprising a polyamideimide comprising phosphorus.
    Type: Application
    Filed: February 13, 2011
    Publication date: August 16, 2012
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong, Brian P. Gilmartin, Robert J. Meyer
  • Publication number: 20120207520
    Abstract: Flexible members for use in imaging devices comprise a polyamideimide comprising phosphorus.
    Type: Application
    Filed: February 12, 2011
    Publication date: August 16, 2012
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong, Brian P. Gilmartin, Robert J. Meyer
  • Patent number: 8241825
    Abstract: Embodiments pertain to a flexible imaging member used in electrostatography and processes for making and using the imaging member. More particularly, the embodiments pertain to a structurally simplified flexible electrophotographic imaging member that has reasonable flatness and exhibits good performance without the need of an anticurl back coating layer.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: August 14, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Yuhua Tong, Stephen T. Avery, Michael S. Roetker, Jimmy E. Kelly
  • Publication number: 20120201580
    Abstract: A fuser belt for an electrostatographic device and methods for making the fuser belt can include the use of a polyimide and a plurality of copper nanoparticles. The use of copper nanoparticles can result in a fuser belt having a lower heat capacity and a higher thermal conductivity than conventional fuser belts.
    Type: Application
    Filed: February 9, 2011
    Publication date: August 9, 2012
    Applicant: Xerox Corporation
    Inventor: Yuhua TONG
  • Publication number: 20120196216
    Abstract: A photoconductor comprising a substrate, an undercoat layer, a photogenerating layer and a charge transport layer is described. The undercoat layer is disposed on the substrate and comprises a metal oxide, and a mixture of a phenolic resin and a cyclohexanecarboxylate.
    Type: Application
    Filed: January 27, 2011
    Publication date: August 2, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Edward F. Grabowski, Marc J. Livecchi
  • Publication number: 20120193583
    Abstract: Flexible members for use in imaging devices comprise a non-ionic surfactant; a fluorinated surfactant; or both.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 2, 2012
    Applicant: XEROX CORPORATION
    Inventors: Michael S. Roetker, Francisco J. Lopez, Kyle B. Tallman, Jonathan H. Herko, David W. Martin, Yuhua Tong
  • Patent number: 8232030
    Abstract: Present embodiments are directed to the improvement of flexible imaging members used in electrophotography. More particularly, embodiments pertain to a structurally simplified curl-free flexible electrophotographic imaging member without the need for an anticurl back coating, having a functionally improved top outermost exposed slippery imaging layer which furthers extends service life, and provides a process for making and using the member.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: July 31, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Yuhua Tong, Stephen T. Avery
  • Publication number: 20120189347
    Abstract: A compound of the formula wherein R1, R2, R3, and R4 can be the same or different, and wherein each of R1, R2, R3, and R4 are independently selected from (i) hydrogen, (ii) an alkyl group, (iii) an aryl group, (iv) an arylalkyl group, (v) an alkylaryl group, (vi) an alkoxy group, (vii) an aryloxy group, (viii) an arylalkyloxy group, (ix) an alkylaryloxy group; and wherein R5 is (i) an alkylene group, (ii) an arylene group, which can be substituted or unsubstituted arylene, and wherein hetero atoms may optionally be present in the arylene group, (iii) an arylalkylene group, or (iv) an alkylarylene group. Further, a process for preparing a charge transport compound comprises contacting a hydroxy-functionalized triarylamine with a dihalide in an alkaline-water solution at room temperature; wherein the raw material for the dihalide comprises a purified or recovered halogen-organic solvent-containing waste stream.
    Type: Application
    Filed: April 3, 2012
    Publication date: July 26, 2012
    Inventor: Yuhua Tong
  • Publication number: 20120183783
    Abstract: An intermediate transfer member that includes a mixture of a polyamideimide, a polybenzimidazole, and an optional conductive filler.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Jin WU, Dante M. PIETRANTONI, Yuhua TONG, Jonathan H. HERKO
  • Publication number: 20120183729
    Abstract: There is described an intermediate transfer member comprising a seamless layer comprising a polyphenylsulfone and a polysiloxane having dispersed therein carbon black particles. The composition used to manufacture the seamless intermediate transfer member is also described.
    Type: Application
    Filed: January 19, 2011
    Publication date: July 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Jonathan H. Herko, Francisco J. Lopez, Kyle Bruce Tallman, Dante M. Pietrantoni, David W. Martin, Yuhua Tong, Michael S. Roetker, Scott J. Griffin, Markus R. Silvestri
  • Patent number: 8216751
    Abstract: The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved flexible electrophotographic imaging member that does not require an anticurl back-coating layer to prevent curling. The charge transport layer of the disclosed embodiments comprises a class of hole transporting plasticizers which act to counteract curling as well as impart good electrical performance to the imaging member.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: July 10, 2012
    Assignee: Xerox Corporation
    Inventor: Yuhua Tong
  • Patent number: 8211601
    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 incorporating a thermoplastic material pre-compounded to impart conductivity to the anti-curl back coating layer and may also contain an adhesion promoter which provides a conductively and optically anti-curl back coating layer. The conductive anti-curl back coating of the present disclosure may be formulated to have a single layer, dual layers, or triple layers.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Yuhua Tong, Edward F. Grabowski, Kock-Yee Law
  • Patent number: 8211609
    Abstract: The present disclosure provides toners including amorphous resins and crystalline resins. Toners with high glass transition temperatures and little plasticization may be obtained in accordance with the present disclosure.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventors: Mark E. Mang, Timothy L. Lincoln, Yuhua Tong, Kevin F. Marcell