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).

  • SILANE-CONTAINING POLYAMIDEIMIDE INTERMEDIATE TRANSFER MEMBERS
    Publication number: 20120148316
    Abstract: An intermediate transfer member including a first supporting substrate layer, and a second layer of a silane-containing polyamideimide, and a filler component.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 14, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yuhua TONG, Dante M. PIETRANTONI, Jin WU
  • FUSER MEMBER
    Publication number: 20120148816
    Abstract: The present teachings provide a fuser member. The fuser member includes a substrate layer comprising a polyamideimide/polybenzimidazole polymer blend. A method of manufacturing the fuser member is described.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 14, 2012
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Dante M. Pietrantoni, Yuhua Tong, David W. Martin
  • INTERMEDIATE TRANSFER MEMBER RECONDITIONING
    Publication number: 20120141157
    Abstract: There is disclosed a method for reconditioning an intermediate transfer member and the reconditioned intermediate transfer member. The method comprises stripping off an outer layer of the intermediate transfer member. A mixture of a polymer, conductive particles and a solvent is coated over the outer surface of a seamless intermediate transfer member. The mixture is heated to form a layer on the outer surface of the intermediate transfer belt. An apparatus for reconditioning an intermediate transfer member is also described.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 7, 2012
    Applicant: XEROX CORPORATION
    Inventors: Dante M. Pietrantoni, Yuhua Tong, Jin Wu, Frank Mezzatesta, Jeremy John Bean, Heiko Rommelmann, Jonathan H. Herko
  • Polymeric intermediate transfer members
    Patent number: 8187711
    Abstract: An intermediate transfer member that contains a polymer of a polyester, a polycarbonate and a polyalkylene glycol, such as a polyethylene glycol, and further including as an optional component a conductive material such as a metal oxide or carbon black.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: May 29, 2012
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Yuhua Tong, Jonathan H Herko, Brian P Gilmartin
  • TRANSPARENT INTERMEDIATE TRANSFER MEMBERS CONTAINING ZINC OXIDE, POLYARYLSULFONE, AND POLYETHERAMINE
    Publication number: 20120119160
    Abstract: An intermediate transfer member including an optional supporting substrate, and in contact with the supporting substrate in the configuration of a layer a polyarylsulfone, a polyetheramine, and nano-size zinc oxide particles.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 17, 2012
    Applicant: XEROX CORPORATION
    Inventor: Yuhua TONG
  • Flexible imaging members without anticurl layer
    Patent number: 8173341
    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 the incorporation of a liquid compound having a high boiling point into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of photoreceptor layer curling.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: May 8, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Yuhua Tong
  • Structurally simplified flexible imaging members
    Patent number: 8168356
    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 the incorporation of a liquid compound having a high boiling point into the charge transport layer such that an anticurl back coating is no longer needed for reduction or elimination of photoreceptor upward curling.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: May 1, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Stephen T. Avery, Yuhua Tong, Michael Roetker, Edward F. Grabowski, Jimmy E. Kelly
  • Anti-static and slippery anti-curl back coating
    Patent number: 8163449
    Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise a polymer blend of an anti-static polymer and a low surface energy A-B diblock copolymer polymer and an adhesion promoter. The embodiments provide an imaging member belt with the anticurl back coating that is electrically conductive and also substantially reduces its surface contact friction to help suppress/eliminate tribo-electrical charge build-up at the backside of the imaging member belt under normal machine imaging member belt operational conditions in the field.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Yuhua Tong
  • Sulfonamide-doped undercoat for imaging device
    Publication number: 20120088872
    Abstract: A photoreceptor undercoat for an electrostatographic imaging device containing a film-forming material, such as, a phenolic resin; a metal oxide, such as, a titanium oxide; and a sulfonamide, including that such sulfonamide facilitates removal of the undercoat from the photoreceptor substrate.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 12, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack
  • Phosphate containing photoconductors
    Patent number: 8153341
    Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide, a phenolic resin, and a phosphate; a photogenerating layer; and at least one charge transport layer.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: April 10, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Jin Wu, Nancy L Belknap, Helen R Cherniack, Marc J Livecchi
  • Photoreceptor with release layer
    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
  • Coating dispersion for optically suitable and conductive anti-curl back coating layer
    Patent number: 8142967
    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 carbon nano tube dispersion into a high molecular weight polycarbonate and an anti-static copolymer with polyester, polycarbonate, and polyethylene glycol units in a formulation for the anti-curl back coating layer which provides a conductively suitable and stable dispersion coating solution for making an optically suitable anti-curl back coating layer.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Edward F. Grabowski, Donald J. Goodman, Kock-Yee Law, Robert C. U. Yu
  • Toner compositions
    Patent number: 8142970
    Abstract: A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: March 27, 2012
    Assignee: Xerox Corporation
    Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng, Peter V. Nguyen, Jon T. Owens
  • PENTANEDIOL ESTER CONTAINING PHOTOCONDUCTORS
    Publication number: 20120052428
    Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover that contains a metal oxide, a phenolic resin, and a pentanediol ester; a photogenerating layer; and at least one charge transport layer.
    Type: Application
    Filed: August 26, 2010
    Publication date: March 1, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Nancy L. Belknap, Helen R. Cherniack, Marc J. Livecchi
  • SLIPPERY AND CONDUCTIVITY ENHANCED ANTICURL BACK COATING
    Publication number: 20120045715
    Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise conductive carbon nanotubes dispersion in a polymer blend comprising three film-forming thermoplastic polymers to: (a) render electrical conductivity effect for tribo-electrical charge elimination (b) impart static dissipation capability, and (c) provide surface energy lowering effect for contact friction reduction to ease imaging member belt drive as well as cutting tribo-electrical charge build-up under normal imaging member belt operational conditions in the field.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 23, 2012
    Applicant: XEROX CORPORATION
    Inventors: Edward F. Grabowski, Robert C. U. Yu, Kock-Yee Law, Yuhua Tong
  • ANTI-STATIC AND SLIPPERY ANTI-CURL BACK COATING
    Publication number: 20120034555
    Abstract: The presently disclosed embodiments relate generally to the formulation of an anticurl back coating layer that renders imaging apparatus flexible members and components their desirable flatness, for use in electrostatographic, including digital apparatuses. More particularly, the embodiments pertain to an imaging member comprising an anticurl back coating layer formulated to comprise a polymer blend of an anti-static polymer and a low surface energy A-B diblock copolymer polymer and an adhesion promoter. The embodiments provide an imaging member belt with the anticurl back coating that is electrically conductive and also substantially reduces its surface contact friction to help suppress/eliminate tribo-electrical charge build-up at the backside of the imaging member belt under normal machine imaging member belt operational conditions in the field.
    Type: Application
    Filed: August 5, 2010
    Publication date: February 9, 2012
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Edward F. Grabowski, Yuhua Tong
  • CONDUCTIVE CARBON BLACK
    Publication number: 20120021122
    Abstract: Described herein is a method of forming a composition including mixing an anhydride, a silane and a solvent to form a solution. Carbon black and an isocyanate are mixed to form a carbon black mixture. The solution and the carbon black mixture are homogenized to form a carbon black dispersion.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: XEROX CORPORATION
    Inventors: Dante M. Pietrantoni, Yuhua Tong, Michael S. Roetker
  • Overcoat for electrophotographic imaging member and methods of making and using same
    Patent number: 8101327
    Abstract: Disclosed herein is an electrophotographic imaging member comprising a substrate, a charge transport layer and an overcoat layer formed by combining a film forming binder and a hole transporting hydroxy triarylamine compound having at least one hydroxyl functional group that is linked to a ring carbon of an aryl group by an alkyl group having 1 to 12 carbon atoms and is capable of forming at least one of a chemical bond and a physical bond with the film forming binder. Also disclosed is an electrophotographic imaging member with an overcoat layer formed by combining a film forming polycarbonate binder, a hole transport material, a surface energy reducing silicone material comprising a crosslinkable acrylate monomer, and a solvent. Coatings and methods of forming imaging members also are disclosed.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: January 24, 2012
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, Cindy C. Chen, Susan M. VanDusen
  • Method and apparatus of rapid continuous process to produce chemical toner and nano-composite particles
    Patent number: 8101331
    Abstract: A process for making particles is provided. In embodiments, a suitable process includes a mixing tank for mixing a plurality of particles dispersed within a liquid media and a vane unit for applying a swirling effect to the plurality of droplets received from the mixing tank through a spray nozzle. The vane unit is in operable communication with a spray nozzle for launching a plurality of droplets, the plurality of droplets including different combinations of the plurality of particles. The process further includes a plurality of outlet ports, where each of a first set of outlet ports includes a filter and of the other outlet port is filterless.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: January 24, 2012
    Assignee: Xerox Corporation
    Inventors: Fa-Gung Fan, Steven M. Malachowski, Yuhua Tong, Chieh-Min Cheng, Pinyen Lin
  • Charge control agents for toner compositions
    Patent number: 8101328
    Abstract: The present disclosure provides polymer-ionic complexes useful as charge control agents. Such charge control agents may be utilized with toner particles to impart excellent triboelectric charging characteristics to the toner.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: January 24, 2012
    Assignee: Xerox Corporation
    Inventors: Timothy L. Lincoln, Timothy J. Key, Robert D. Bayley, Yuhua Tong