Patents by Inventor Yu Qi

Yu Qi 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: 9441131
    Abstract: Exemplary embodiments provide nanotube-containing coating compositions and methods for making and using the coating compositions. In an exemplary embodiment, the coating composition can include a plurality of nanotubes (e.g., carbon nanotubes (CNTs)) dispersed stably and uniformly in a polymer matrix containing fluoropolymers. The coating composition can further include stabilizers to allow a stable and/or uniform dispersion of the plurality of nanotubes in the fluoropolymers. The nanotube coating composition can be coated on an article surface to improve mechanical robustness, and electrical and thermal conductivity of the coated article. The coated article can be used as, for example, a fuser member, a fixing member, a pressure roller, or a release agent donor member in an electrostatographic printing machine or process.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: September 13, 2016
    Assignee: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Sandra Gardner, Vlad Skorokhod, Qi Zhang
  • Patent number: 9394421
    Abstract: A method for forming a dispersion includes mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles are from about 0.1 to about 0.8 weight percent of the first dispersion. The method includes concentrating the first dispersion by removing the first solvent to produce a second dispersion wherein the graphene particles are from about 2.0 to about 10.0 weight percent of the concentrated dispersion. The concentrated dispersion is mixed with a fluoropolymer dispersion including a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion. A polymer binder in a third solvent is mixed with the second dispersion to form the coating dispersion.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: July 19, 2016
    Assignee: Xerox Corporation
    Inventors: Qi Zhang, Yu Qi, Sandra J. Gardner, Nan-Xing Hu
  • Patent number: 9353460
    Abstract: A method of forming a metal structure. The method comprises providing a dispersion of metal nanoparticles and a solution comprising a transient polymer and solvent. The dispersion of metal nanoparticles and the solution are formed by coaxially electrospinning into a fiber comprising the metal nanoparticles and the transient polymer. The fiber is heated to decompose the transient polymer and form a metallic structure.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 31, 2016
    Assignee: XEROX CORPORATION
    Inventors: Yu Qi, Ping Liu, Sandra J. Gardner, Yiliang Wu
  • Patent number: 9340457
    Abstract: The present teachings include a coating composition which includes a liquid, fluoropolymer particles, carbon nanotubes, and a dispersant. The dispersant has a thermal degradation temperature below the melting temperature of the fluoropolymer particles.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: May 17, 2016
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, David C. Irving, Patrick J. Finn
  • Patent number: 9333742
    Abstract: There is described a transfer member or blanket for use in aqueous ink jet printer. The transfer member includes a surface layer having a surface roughness (Ra) of from about 50 nm to about 5 microns. The surface layer has a surface energy between 8 mN/m2 and 30 mN/m2. The surface layer includes an elastomeric matrix having a plurality texture particles dispersed therein. The weight percent of the texture particles in the surface layer is from about 0.2 weight percent to about 20 weight percent.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: May 10, 2016
    Assignee: Xerox Corporation
    Inventors: Carolyn Patricia Moorlag, Yu Qi, Brynn Mary Dooley, Barkev Keoshkerian
  • Patent number: 9329544
    Abstract: Exemplary embodiments provide materials and methods for polymer-based fixing members that have a textured surface with reduced surface energy and increased surface hydrophobicity.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: May 3, 2016
    Assignee: XEROX CORPORATION
    Inventors: Woo Soo Kim, Yu Qi, Nan-Xing Hu
  • Patent number: 9328256
    Abstract: A reinforced fluoropolymer composite is presented, which includes a fluoropolymer and a fluoro-functionalized nanocrystalline cellulose in which the outer circumference of the nanocrystalline cellulose has been functionalized with fluorinated substrates. The fluoro-functionalized nanocrystalline cellulose may be used to produce stable dispersions with fluoropolymers exhibiting enhanced adhesion between the nanocrystalline particles and fluoropolymer in a composite material, and decreased surface free energy of the cellulose surface.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: May 3, 2016
    Assignee: XEROX CORPORATION
    Inventors: Brynn Mary Dooley, Yu Qi, Carolyn Moorlag, Qi Zhang
  • Publication number: 20160089876
    Abstract: There is described a transfer member or blanket for use in aqueous ink jet printer. The transfer member includes a non-woven polymer fiber matrix and a polymer dispersed throughout the non-woven polymer fiber matrix. The polymer fiber matrix has a first surface energy and the polymer has a second surface energy. The difference between the first surface energy and the second surface energy is from about 30 mJ/m2 to about 5 mJ/m2.
    Type: Application
    Filed: December 8, 2015
    Publication date: March 31, 2016
    Inventors: Yu Qi, Carolyn Patricia Moorlag, Brynn Mary Dooley, Barkev Keoshkerian
  • Patent number: 9272247
    Abstract: There is provided a membrane that includes a plurality of polyimide fibers encased in a fluoropolymer sheath, the plurality of fibers having a diameter of from about 10 nm to about 50 microns, wherein the plurality of fibers form a permeable non-woven mat. A method of manufacturing the membrane is provided.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: March 1, 2016
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Sandra J. Gardner, Qi Zhang, Carolyn P. Moorlag, Brynn M. Dooley, Guiqin Song, Nicoleta D. Mihai, Nan-Xing Hu
  • Publication number: 20160030976
    Abstract: According to an embodiment a method of making a fuser member is described. The method includes, obtaining a silicone layer disposed on a substrate and coating a primer composition including an aqueous dispersion of a fluorelastomer and a curing agent on the silicone layer. A topcoat composition is coated on the primer composition which includes a fluoroplastic dispersion. The primer composition and the topcoat composition are heated to form the fuser member.
    Type: Application
    Filed: October 14, 2015
    Publication date: February 4, 2016
    Inventors: Yu Qi, Nan-Xing Hu, David C. Irving, Patrick J. Finn, Gordon Sisler
  • Patent number: 9244406
    Abstract: Exemplary embodiments provide coating compositions having pseudo-fluorine surface and methods for processing and using the coating compositions. The coating composition can include, for example, a plurality of fluorine-containing resin fillers and a plurality of nanotubes (e.g., carbon nanotubes (CNTs)) dispersed in a polymer matrix that contains, e.g., one or more cross-linked polymers. The fluorine-containing resin fillers can provide a pseudo-fluorine surface for a low surface energy of the coating composition. The nanotubes can be dispersed in the polymer matrix to provide an improved mechanical robustness of the coating composition. The coating composition can be coated on a member surface, wherein the coated member can be, for example, a fuser member, a fixing member, a pressure roller, or a release agent donor member, used in an electrostatographic printing device or process.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: January 26, 2016
    Assignee: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Qi Zhang, Gordon Sisler, Brian McAneney
  • Patent number: 9242456
    Abstract: There is described a transfer member or blanket for use in aqueous ink jet printer. The transfer member includes a non-woven polymer fiber matrix and a polymer dispersed throughout the non-woven polymer fiber matrix. The polymer fiber matrix has a first surface energy and the polymer has a second surface energy. The difference between the first surface energy and the second surface energy is from about 30 mJ/m2 to about 5 mJ/m2.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: January 26, 2016
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Carolyn Patricia Moorlag, Brynn Mary Dooley, Barkev Keoshkerian
  • Publication number: 20160011543
    Abstract: Provided is a method of making fuser members. The method can include applying a rubber conformance layer over a substrate, applying a suspension composition over the conformance layer, the suspension composition comprising a plurality of fluoroplastic particles over the conformance layer, and exposing the plurality of fluoroplastic particles to pulsed light to form a continuous topcoat film.
    Type: Application
    Filed: April 15, 2015
    Publication date: January 14, 2016
    Inventors: Yu Qi, Mandakini Kanungo, Phillip J. Wantuck, David J. Gervasi, Santokh S. Badesha
  • Patent number: 9217968
    Abstract: In accordance with the invention, there are image forming apparatuses, fusing subsystems, and methods of making a member of the fusing subsystems. The method of making a member of a fusing subsystem can include providing a fuser member, the fuser member including a substrate and providing a dispersion including a plurality of carbon nanotubes, a stabilizer, a hydrophobic polymer, and a solvent, wherein the plurality of carbon nanotubes is selected from the group consisting of single wall carbon nanotubes and multiple wall carbon nanotubes. The method can also include applying the dispersion over the substrate to form a coated substrate and heating the coated substrate to form a hydrophobic composite coating such that a top surface of the fuser member has a water contact angle of at least about 120°.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: December 22, 2015
    Assignee: XEROX CORPORATION
    Inventors: Yu Qi, Nan-Xing Hu, Qi Zhang, Ed Zwartz, Kurt Halfyard, Brian Mcaneney, Gord Sisler
  • Patent number: 9200120
    Abstract: An intermediate transfer member containing a layer of a siloxyfluorocarbon networked polymer. A method of preparing an intermediate transfer member including mixing a coating solution containing siloxyfluorocarbon precursor materials; applying the coating solution as a sol on a substrate; curing the coating solution on the substrate to form an intermediate transfer member containing a layer of a siloxyfluorocarbon networked polymer. The surface free energy of the intermediate transfer member may be from about 10 mN/m to about 40 mN/m. A method of printing an image to a substrate includes applying an inkjet ink to an intermediate transfer member containing a layer of a siloxyflurocarbon networked polymer; spreading the ink onto the intermediate transfer member; inducing a property change of the ink; and transferring the ink to a substrate.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: December 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Brynn Mary Dooley, Carolyn P. Moorlag, Anthony James Wigglesworth, Adrien Pierre Cote, Yu Qi, Barkev Keoshkerian
  • Publication number: 20150321467
    Abstract: There is described a transfer member or blanket for use in aqueous ink jet printer. The transfer member includes a surface layer having a surface roughness (Ra) of from about 50 nm to about 5 microns. The surface layer has a surface energy between 8 mN/m2 and 30 mN/m2. The surface layer includes an elastomeric matrix having a plurality texture particles dispersed therein. The weight percent of the texture particles in the surface layer is from about 0.2 weight percent to about 20 weight percent.
    Type: Application
    Filed: May 6, 2014
    Publication date: November 12, 2015
    Applicant: Xerox Corporation
    Inventors: Carolyn Patricia Moorlag, Yu Qi, Brynn Mary Dooley, Barkev Keoshkerian
  • Patent number: 9180488
    Abstract: According to an embodiment a method of making a fuser member is described. The method includes, obtaining a silicone layer disposed on a substrate and coating a primer composition including an aqueous dispersion of a fluorelastomer and a curing agent on the silicone layer. A topcoat composition is coated on the primer composition which includes a fluoroplastic dispersion. The primer composition and the topcoat composition are heated to form the fuser member.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: November 10, 2015
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, David C. Irving, Patrick J. Finn, Gordon Sisler
  • Publication number: 20150309452
    Abstract: A fuser comprises a substrate and a composite layer formed on the substrate. The composite layer comprises a fluoropolymer and at least one of (a) perfluorosulfonated polymer-treated, carbon nanotube-comprising particles, and (b) perfluorosulfonated polymer-treated, graphene-comprising particles. Methods of making a fuser and methods of fusing toner particles are also disclosed.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 29, 2015
    Applicant: XEROX CORPORATION
    Inventors: QI ZHANG, NAN-XING HU, SUXIA YANG, SANDRA J. GARDNER, EDWARD G. ZWARTZ, YU QI
  • Publication number: 20150273817
    Abstract: There is described a transfer member or blanket for use in aqueous ink jet printer. The transfer member includes a non-woven polymer fiber matrix and a polymer dispersed throughout the non-woven polymer fiber matrix. The polymer fiber matrix has a first surface energy and the polymer has a second surface energy. The difference between the first surface energy and the second surface energy is from about 30 mJ/m2 to about 5 mJ/m2.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 1, 2015
    Applicant: Xerox Corporation
    Inventors: Yu Qi, Carolyn Patricia Moorlag, Brynn Mary Dooley, Barkev Keoshkerian
  • Patent number: 9146511
    Abstract: A fuser member having a substrate and a surface layer disposed on the substrate is described. The surface layer includes a polyimide aerogel having dispersed throughout a cross-linked fluoropolymer and a release agent wherein the release agent is a liquid at a temperature above about 100° C.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: September 29, 2015
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Brynn M. Dooley, Nan-Xing Hu