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).

  • CURL-FREE FLEXIBLE IMAGING MEMBER AND METHODS OF MAKING THE SAME
    Publication number: 20110177439
    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: Application
    Filed: January 19, 2010
    Publication date: July 21, 2011
    Applicant: XEROX CORPORATION
    Inventor: Yuhua Tong
  • Carbon nanotube containing intermediate transfer members
    Patent number: 7976935
    Abstract: A UV curable intermediate transfer media, such as a belt, that includes a first supporting substrate, such as a polyimide substrate layer, and a second surface layer of a carbon nanotube.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: July 12, 2011
    Assignee: Xerox Corporation
    Inventors: Jin Wu, Yuhua Tong
  • METHOD AND APPARATUS OF RAPID CONTINUOUS DROP FORMATION PROCESS TO PRODUCE CHEMICAL TONER AND NANO-COMPOSITE PARTICLES
    Publication number: 20110151374
    Abstract: A process for making particles is provided. In embodiments, a suitable process includes a mixing tank for mixing a plurality of droplets dispersed within a liquid media. The process further includes a drop ejector controlling unit in operable communication with a drop ejector array for launching a plurality of droplets, the plurality of droplets including the plurality of particles, and an outlet port for receiving the plurality of droplets.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: Xerox Corporation
    Inventors: Pinyen Lin, Fa-Gung Fan, Steven M. Malachowski, Yuhua Tong, Chieh-Min Cheng
  • METHOD AND APPARATUS OF RAPID CONTINUOUS PROCESS TO PRODUCE CHEMICAL TONER AND NANO-COMPOSITE PARTICLES
    Publication number: 20110151375
    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: Application
    Filed: December 18, 2009
    Publication date: June 23, 2011
    Applicant: XEROX CORPORATION
    Inventors: Fa-Gung Fan, Steven M. Malachowski, Yuhua Tong, Chieh-Min Cheng, Pinyen Lin
  • UNDERCOAT LAYER AND IMAGING MEMBERS COMPRISING SAME
    Publication number: 20110151363
    Abstract: Disclosed are undercoat layers comprising a metal oxide, a polymer, and a citrate of Formula (I): wherein R1 is H, alkyl, or COR?; wherein R? is alkyl; and wherein R2, R3, and R4 are independently alkyl. The undercoat layers are useful in imaging members because they are easily separated from the substrate. This reduces the number of steps necessary to reclaim the substrate.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 23, 2011
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Jin Wu, Robert P. Altavela, Edward F. Grabowski, Kent J. Evans, Adilson P. Ramos, Nancy L. Belknap, Helen R. Cherniack
  • IMAGING MEMBERS COMPRISING FLUOROKETONE
    Publication number: 20110136049
    Abstract: Improved electrophotographic imaging members which pertain to the incorporation of a fluoroketone into the charge transport layer to achieve a structurally simplified flexible electrophotographic imaging member that remains flat without the need for an anticurl back coating layer. The imaging member is both more slippery and has a reduced coefficient of friction, thus extending service life.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 9, 2011
    Applicant: XEROX CORPORATION
    Inventors: Yuhua Tong, Edward F. Grabowski, Jin Wu, Robert C.U. Yu
  • TONER COMPOSITIONS
    Publication number: 20110117486
    Abstract: The present disclosure provides polyesters suitable for use in forming toners. In embodiments, a polyester may be subjected to phase inversion emulsification, in which charge control agents are added so that the polyester emulsion includes charge control agents therein. The resulting polyester emulsion with charge control agents may then be utilized to form toner particles.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 19, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert D. Bayley, Yuhua Tong, Timothy L. Lincoln, Grazyna Kmiecik-Lawrynowicz, Maura A. Sweeney
  • Toner compositions
    Patent number: 7943283
    Abstract: Processes for producing toner are provided which utilize reactive coalescing agents in forming the toner particles, as well as toners produced by such processes.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 17, 2011
    Assignee: Xerox Corporation
    Inventors: Zhen Lai, Yuhua Tong, Christopher M. Wolfe, Chieh-Min Cheng
  • UV CURED INTERMEDIATE TRANSFER MEMBERS
    Publication number: 20110104467
    Abstract: A UV curable intermediate transfer media, such as a belt, that includes a first supporting substrate layer, such as a polyimide substrate layer, and a second surface layer of an epoxy acrylate, a conductive compound, and a photoinitiator.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong, Dante M. Pietrantoni, Jonathan H. Herko
  • GELATIN RELEASE LAYER AND METHODS FOR USING THE SAME
    Publication number: 20110104602
    Abstract: The disclosed embodiments are directed to a method for removing photoreceptor coatings from a rigid substrate, wherein the photoreceptor coatings disposed over a substrate of an electrophotographic photoreceptor, in order to recover it for re-use in photoreceptor manufacturing. More specifically, the invention discloses a photoreceptor substrate recovery methodology that includes the creation of an inner release layer over the substrate and followed by subjecting the rejected or used electrophotographic photoreceptor to a step of soaking in a non-toxic and environmentally-friendly stripping solution that separates the coatings from the substrate.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
  • SILANE RELEASE LAYER AND METHODS FOR USING THE SAME
    Publication number: 20110104603
    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 present embodiments discloses a photoreceptor coatings removal process comprises subjecting an electrophotographic photoreceptor to a stripping solution that separates the coatings from the substrate.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Kent J. Evans, Yuhua Tong, Nancy L. Belknap, Helen R. Cherniack, Robert P. Altavela, Edward F. Grabowski
  • POLYMERIC INTERMEDIATE TRANSFER MEMBERS
    Publication number: 20110104499
    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: Application
    Filed: October 29, 2009
    Publication date: May 5, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong, Jonathan H. Herko, Brian P. Gilmartin
  • TONER COMPOSITIONS
    Publication number: 20110086306
    Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the charge control agents include copolymers formed by an emulsion polymerization process.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert D. Bayley, Yuhua Tong, Timothy L. Lincoln, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Susan J. LaFica, Mark E. Mang
  • PLASTICIZER CONTAINING PHOTOCONDUCTORS
    Publication number: 20110053065
    Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a cyclohexanecarboxylate.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Sherri A. Toates, Robert J. Meyer, Yuhua Tong
  • FLEXIBLE IMAGING MEMBER BELTS
    Publication number: 20110053069
    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: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Yuhua Tong, Stephen T. Avery, Michael S. Roetker, Jimmy E. Kelly
  • FLEXIBLE IMAGING MEMBER BELTS
    Publication number: 20110053068
    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: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Robert C. U. Yu, Yuhua Tong, Stephen T. Avery, Michael S. Roetker
  • CARBON NANOTUBE CONTAINING INTERMEDIATE TRANSFER MEMBERS
    Publication number: 20110052841
    Abstract: A UV curable intermediate transfer media, such as a belt, that includes a first supporting substrate, such as a polyimide substrate layer, and a second surface layer of a carbon nanotube.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: XEROX CORPORATION
    Inventors: Jin Wu, Yuhua Tong
  • TONER COMPOSITIONS
    Publication number: 20110039199
    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: Application
    Filed: August 24, 2010
    Publication date: February 17, 2011
    Applicant: XEROX CORPORATION
    Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng, Peter V. Nguyen, Jon T. Owens
  • Imaging member having first and second charge transport layers
    Patent number: 7867677
    Abstract: Provided is an imaging member such as photoreceptor comprising a substrate, a charge generation layer, a first charge transport layer, a second charge transport layer, and an optional overcoat layer. The first charge transport layer is formed from a first CTL formulation comprising an aromatic monoamine and a first polymeric film forming binder material. The second charge transport layer is formed from a second CTL formulation comprising aromatic diamine and a second polymeric film forming binder material. The imaging member has gained improved properties such as removal of anti-curl layer, desirable structural flatness, electrical properties, mechanical robustness, flexibility, longevity, and copy image qualities over extended use, among others.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: January 11, 2011
    Assignee: Xerox Corporation
    Inventors: Yuhua Tong, John F. Yanus, Jin Wu, Steven M. Sterling, Susan M. VanDusen
  • PURIFIED POLYESTER RESINS FOR TONER PERFORMANCE IMPROVEMENT
    Publication number: 20100330485
    Abstract: A toner that includes at least one polyester resin wherein the amount of free polyvalent acid monomer in the polyester resin is less than 4 mg/gram, and wherein the percentage of the at least one polyester resin with a Mw less than 1500 is less than about 10%.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Applicant: Xerox Corporation
    Inventors: John L. PAWLAK, Timothy L. LINCOLN, William H. HOLLENBAUGH, JR., Yuhua TONG, Brendan H. WILLIAMSON