Patents by Inventor Nan-Xing Hu

Nan-Xing Hu 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: 20140249005
    Abstract: A delivery member for use in an image forming apparatus. The delivery member has a support member and a first layer disposed on the support member. The first layer includes a cross-linked elastomeric matrix, a stabilizing polymer comprising a polysiloxane backbone, and a functional material. Coating mixtures for preparing such delivery members having a first layer. Image forming apparatuses containing such delivery members.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 4, 2014
    Applicant: XEROX CORPORATION
    Inventors: Sara J. Vella, Nan-Xing Hu, Yu Liu
  • Patent number: 8821962
    Abstract: An electronic device, such as a thin-film transistor, includes a substrate and a dielectric layer formed from a dielectric composition. The dielectric composition comprises a dielectric material and a low surface tension additive. The low surface tension additive allows for the formation of a thin, smooth dielectric layer with fewer pinholes and enhanced device yield. In particular embodiments, the dielectric material comprises a lower-k dielectric material and a higher-k dielectric material. When deposited, the lower-k dielectric material and the higher-k dielectric material form separate phases.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: September 2, 2014
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Yulin Wang, Ping Liu, Nan-Xing Hu, Anthony James Wigglesworth
  • Publication number: 20140233980
    Abstract: An image forming apparatus comprises an electrophotographic photoconductive member, a charging unit, a delivery unit and a cleaning unit. The charging unit is disposed in contact with the surface of the photoconductive member and the delivery unit disposed in contact with the surface of the charging unit. The delivery unit applies a layer of functional material to a surface of the charging unit and the charging unit in turn applies a layer of the functional material onto the surface of the photoconductive member. The cleaning unit is disposed in contact with a surface of the charging unit to clean the charging unit and reduce contamination of a surface of the delivery unit. The cleaning unit is disposed in an upstream direction of the delivery roller relative to a rotation direction of the charging unit.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 21, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu Liu, Sarah J. Vella, Gregory McGuire, Gaetano Lavigne, Nan-xing Hu, Johann Junginger
  • Patent number: 8808789
    Abstract: Methods and compositions for preparing highly conductive electronic features are disclosed. When organoamine-stabilized silver nanoparticles are exposed to an alkaline composition, the resulting electronic feature is highly conductive. Such methods are particularly advantageous when applied to aged silver nanoparticle compositions.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: August 19, 2014
    Assignee: Xerox Corporation
    Inventors: Ping Liu, Yiliang Wu, Nan-Xing Hu, Anthony Wigglesworth
  • Patent number: 8805241
    Abstract: The presently disclosed embodiments relate generally to an image forming apparatus comprising: a) an imaging member, b) a bias charging roller in contact with the surface of the imaging member, and c) a delivery unit in contact with the surface of the bias charge roller, wherein the delivery unit is fabricated as a polymer matrix impregnated with functional materials, such that the functional material is transferred onto the imaging member from the delivery unit via the bias charging roller. Embodiments also pertain to an improved electrophotographic imaging member comprising a very thin outer layer on the imaging member surface, where the outer layer comprises functional materials, such as paraffin, that act as a lubricant and or a barrier against moisture and/or surface contaminants. The improved imaging member exhibits improved xerographic performance, such as reduced friction and deletions in high humidity conditions.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: August 12, 2014
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, Yu Liu, Sarah J. Vella, Richard A. Klenkler, Vladislav Skorokhod
  • Publication number: 20140219679
    Abstract: There is described an image forming apparatus that includes an imaging member having a charge retentive-surface for developing an electrostatic latent image thereon. The imaging member includes a substrate and photoconductive member disposed on the substrate. The image forming apparatus includes a charging unit for applying an electrostatic charge on the imaging member to a predetermined electric potential wherein the charging unit is spaced from the photoconductive member a distance of from about 3 ?m to about 300 ?m. The image forming apparatus includes a delivery member in contact with the surface of the photoconductive member. The delivery member includes an elastomeric matrix impregnated with a liquid lubricant wherein the delivery member applies a layer of liquid lubricant to the surface of the photoconductor wherein in the layer has a thickness of from about 1 nm to about 15 nm during steady state operation.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 7, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu Liu, Nan-Xing Hu, Sarah J. Vella
  • Patent number: 8790774
    Abstract: Exemplary embodiments provide materials and methods for a nanocomposite material and a fuser member containing the nanocomposite material in a fusing system, wherein the nanocomposite material can contain a plurality of carbon nanotubes (CNTs) and a plurality of inorganic nano-fillers (INFs) disposed in a polymer matrix to provide the nanocomposite material with desirable properties.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: July 29, 2014
    Assignee: Xerox Corporation
    Inventors: Qi Zhang, Yu Qi, Nan-Xing Hu, Gordon Sisler
  • Publication number: 20140205312
    Abstract: A vibration-assisted bias charge roll cleaning system includes a bias charge roll cleaning member connected to an actuator for causing the cleaning member to vibrate. The actuator is controlled to vibrate according to a predetermined pattern, and at desired frequencies at particular modes. The cleaning member is configured to be movable to a contact-cleaning position and a cleaning member cleaning position at which the cleaning member is separate from the charge roll.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu LIU, Johann JUNGINGER, Sarah VELLA, Nan-xing HU, Vlad SKOROKHOD, Greg MCGUIRE
  • Patent number: 8787809
    Abstract: Exemplary embodiments provide a pressure member used in electrophotographic printing devices, wherein the pressure member can include a coated outermost layer containing fluoropolymers and carbon nanotubes (CNTs) each surrounded by an elastomeric material.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: July 22, 2014
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu
  • Patent number: 8781383
    Abstract: Exemplary embodiments provide materials and methods for a non-woven fabric, a fuser member, and a fusing apparatus used in electrophotographic printing devices, wherein the non-woven fabric can be at least part of the topcoat layer of the fuser member and can include a plurality of non-woven electrospun fibers bonded with a fluoropolymer.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 15, 2014
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Carolyn Moorlag, Qi Zhang, Nan-Xing Hu
  • Patent number: 8774696
    Abstract: There is described an applicator for use in an image forming apparatus. The applicator comprises a blade applicator comprising an elastomeric matrix and a functional material dispersed therein. The applicator blade is positioned in a trailing position with respect to a surface and wherein the functional material diffuses from the elastomeric matrix to the surface.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: July 8, 2014
    Assignee: Xerox Corporation
    Inventors: Yu Liu, Sarah J. Vella, Vladislav Skorokhod, Gaetano J. Lavigne, Nan-Xing Hu, Gregory M. McGuire
  • Patent number: 8765025
    Abstract: A metal nanoparticle composition includes an organic-stabilized metal nanoparticle and a solvent in which the solvent selected has the following Hansen solubility parameters: a dispersion parameter of about 16 MPa0.5 or more, and a sum of a polarity parameter and a hydrogen bonding parameter of about 8.0 MPa0.5 or less. The metal nanoparticle composition is suitable for printing conductive lines that are uniform, smooth and narrow on various substrate surfaces. The metal nanoparticle composition is able to form printed conductive features having a coffee ring effect ratio of about 1.2 to about 0.8, a surface roughness of about 15 or less and a line width of about 200 microns or less.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: July 1, 2014
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Yulin Wang, Mahya Mohktari, Roger E. Gaynor, Nan-Xing Hu, Marko D. Saban
  • Patent number: 8765218
    Abstract: The presently disclosed embodiments are directed generally to methods for making the core-shell fluorinated particles which are incorporated into the overcoat layers of an electrophotographic imaging member to reduce torque and cleaning failures during the photoreceptor cleaning process. The core-shell fluorinated particles are core-shell fluorinated nano- or micro-particles encapsulated in a melamine shell. The present embodiments also pertain to processes for making the overcoat layer comprising the core-shell fluorinated particles.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: July 1, 2014
    Assignee: Xerox Corporation
    Inventors: Woo Soo Kim, Nan-Xing Hu, Jennifer A. Coggan, Yvan Gagnon
  • Patent number: 8768234
    Abstract: There is described a delivery member for use in an image forming apparatus. The delivery member includes a support member, an inner layer comprising a elastomeric matrix and a functional material dispersed therein, the inner layer disposed on the support member and an outer layer disposed on the inner layer. A method for manufacturing the delivery member and its function are described.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: July 1, 2014
    Assignee: Xerox Corporation
    Inventors: Sarah J. Vella, Nan-Xing Hu, Yu Liu, Richard A. Klenkler
  • Publication number: 20140178658
    Abstract: A fuser member having a substrate and a polyimide aerogel layer disposed on the substrate is shown. The polyimide aerogel layer has a porosity of from about 50 percent to about 95 percent. A fluoropolymer surface layer is disposed on the polyimide aerogel layer.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu
  • Publication number: 20140178579
    Abstract: A method of manufacturing a fuser member is described. The method includes obtaining a substrate and coating a composition of an anhydride capped polyamic acid oligomer, a multi-amine and a solvent on the substrate to form a polyimide gel layer on the substrate. The solvent is extracted from the polyimide gel layer with an extraction solvent. The extraction solvent is removed to form a polyimide aerogel layer having a porosity of from about 50 percent to about 95 percent. A fluoropolymer is coated on the polyimide aerogel layer and cured or melted to form a release layer.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu
  • Patent number: 8748873
    Abstract: A thin film transistor has a dual semiconducting layer comprising two semiconducting sublayers. The first sublayer comprises a polythiophene and carbon nanotubes. The second sublayer comprises the polythiophene and has no carbon nanotubes. Devices comprises the dual semiconducting layer exhibit high mobility.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: June 10, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yiliang Wu, Ping Liu, Nan-Xing Hu
  • Publication number: 20140154512
    Abstract: Described is a fuser member having a substrate and a release layer disposed on the substrate. The release layer includes a non-woven matrix of a plurality of polymer fibers. Each of the plurality of polymer fibers has a diameter of from about 5 nm to about 50 microns. A siloxyfluorocarbon networked polymer dispersed throughout the plurality of polymer fibers. The plurality of polymer fibers are from about 5 weight percent to about 50 weight percent of the release layer. In embodiments the polymer fibers are encased in a fluoropolymer sheath.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: XEROX CORPORATION
    Inventors: Brynn M. Dooley, Yu Qi, Edward G. Zwartz, Nan-Xing Hu
  • Patent number: 8742403
    Abstract: A small molecule semiconductor of Formula (I): wherein R1, R2, R3 and R4 are independently selected from a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted ethynyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, an alkoxy group, an alkylthio group, an alkylsilyl group, a cyano group, and a halogen atom, wherein n is 1 or 2, and wherein X is independently S or
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 3, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Anthony J. Wigglesworth, Yiliang Wu, Ping Liu, Nan-Xing Hu
  • Publication number: 20140147180
    Abstract: There is disclosed a fuser member that includes a substrate layer and a surface layer disposed on the substrate layer. The surface layer includes a fluoropolymer having dispersed therein fluorinated graphene particles. A method of manufacturing a fuser member is also provided.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 29, 2014
    Applicant: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Qi Zhang, Brynn M. Dooley