Patents by Inventor Naveen Chopra

Naveen Chopra 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).

  • METHOD FOR LUBRICATING IMAGING MEMBER
    Publication number: 20170131676
    Abstract: Methods for lubricating an imaging member include applying lubricant-containing capsules to the surface of the imaging member via a non-contact applicator. The capsules are applied upstream of a cleaning blade after image transfer to another substrate, such that the cleaning blade ruptures the capsules, thereby releasing the lubricant contained therein.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Inventors: Yu Liu, Johann Junginger, Sarah Vella, Cuong Vong, Naveen Chopra, Nan-Xing Hu
  • Ink Jet Ink Compositions For Digital Manufacturing Of Transparent Objects
    Publication number: 20170121547
    Abstract: A curable ink including at least one monomer, oligomer, or prepolymer; an optional photoinitiator; an optional colorant; and amide gellant having a molecular weight of from about 800 to about 2,500 g/mole; wherein the ink has an onset of gelation defined by the glass transition of the low molecular weight amide gellant according to the relationship Onset of Gelation (K)=(Constant) Tg of gellant (K); wherein the Constant is less than 1.5. A process for printing a three-dimensional article including providing a curable ink; depositing the curable ink in one or more layers; and curing the deposited ink to form the three-dimensional object.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventors: Naveen Chopra, Barkev Keoshkerian, Carolyn Moorlag, C. Geoffrey Allen, Marcel P. Breton, Gordon Sisler
  • Printing Process
    Publication number: 20170106586
    Abstract: A process including providing a curable gellant ink composition having a phase transition temperature; heating the ink composition to a temperature above the phase transition temperature; depositing the ink composition onto a substrate; wherein upon contact with the substrate the ink composition freezes to provide a gel ink layer; treating at least a portion of the gel ink layer whereby treated gellant ink reacts to form a three-dimensional object and wherein untreated gellant ink does not react and remains in gellant form; optionally, wherein the unreacted gellant ink provides a support structure for overhang portions of the three-dimensional object.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 20, 2017
    Inventors: Barkev Keoshkerian, Carolyn Moorlag, Edward G. Zwartz, Naveen Chopra, Marcel P. Breton, Sarah J. Vella
  • Dual component inks comprising reactive latexes for indirect printing
    Patent number: 9624389
    Abstract: An ink comprising a first reactive latex having a first crosslinkable functional group and a second reactive latex a second crosslinkable functional group, wherein the first reactive latex can react with the second reactive latex to form a cross-linked polymer matrix when in contact with each other, wherein the first reactive latex and the second reactive latex are not in contact with each other, which is suitable for use in an indirect printing method, and a method of printing using the ink.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: April 18, 2017
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Daryl W. Vanbesien, Barkev Keoshkerian, Michelle N. Chrétien, Marcel P. Breton, Jennifer L. Belelie, Jenny Eliyahu
  • Emulsified electrorheological ink for indirect printing
    Patent number: 9605166
    Abstract: An emulsified aqueous ink comprising an electrorheological fluid including a liquid phase and a solid phase, and a co-solvent, which is suitable for use in an indirect printing method.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: March 28, 2017
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Jennifer L. Belelie, Barkev Keoshkerian, Michelle Chrétien
  • Phase change inks comprising inorganic nucleating agents
    Patent number: 9580615
    Abstract: A solid ink composition suitable for ink jet printing, including printing on coated paper substrates. In particular, the solid ink composition comprises a crystalline compound, an amorphous compound, and an inorganic nucleating agent, which provides for a robust and fast printing ink.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 28, 2017
    Assignee: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Jennifer L. Belelie, Gabriel Iftime, Naveen Chopra, Kentaro Morimitsu, Peter G. Odell
  • Method for lubricating imaging member by applying lubricant-containing capsules via a non-contact applicator
    Patent number: 9575458
    Abstract: Methods for lubricating an imaging member include applying lubricant-containing capsules to the surface of the imaging member via a non-contact applicator. The capsules are applied upstream of a cleaning blade after image transfer to another substrate, such that the cleaning blade ruptures the capsules, thereby releasing the lubricant contained therein.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: February 21, 2017
    Assignee: XEROX CORPORATION
    Inventors: Yu Liu, Johann Junginger, Sarah Vella, Cuong Vong, Naveen Chopra, Nan-Xing Hu
  • PHASE CHANGE INKS COMPRISING CRYSTALLINE AMIDES
    Publication number: 20170029644
    Abstract: A phase change ink composition suitable for high speed ink jet printing, including printing on coated paper substrates. In embodiments, the phase change ink composition comprises both a crystalline compound and an amorphous compound, and optionally, a colorant, which provides for a robust ink. The crystalline compound is an amide and the amorphous compound is an ester of tartaric acid.
    Type: Application
    Filed: September 28, 2016
    Publication date: February 2, 2017
    Inventors: KENTARO MORIMITSU, JENNIFER L. BELELIE, NAVEEN CHOPRA, GABRIEL IFTIME, PETER G. ODELL
  • Phase change inks comprising crystalline amides
    Patent number: 9528016
    Abstract: A phase change ink composition suitable for high speed ink jet printing, including printing on coated paper substrates. In embodiments, the phase change ink composition comprises both a crystalline compound and an amorphous compound, and optionally, a colorant, which provides for a robust ink. The crystalline compound is an amide and the amorphous compound is an ester of tartaric acid.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 27, 2016
    Assignee: XEROX CORPORATION
    Inventors: Kentaro Morimitsu, Jennifer L. Belelie, Naveen Chopra, Gabriel Iftime, Peter G. Odell
  • Electron beam curable inks for indirect printing
    Patent number: 9528012
    Abstract: The present disclosure provides an electron beam ink comprising a radiation curable material selected from the group consisting of a curable monomer, a curable oligomer, and mixtures thereof; and a surfactant, which is suitable for use in an indirect printing method. The present disclosure also provides a method of printing using an electron beam curable ink.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: December 27, 2016
    Assignee: XEROX CORPORATION
    Inventors: Michelle N. Chretien, Jennifer L. Belelie, Naveen Chopra, Barkev Keoshkerian, Marcel P. Breton
  • Phase change ink compositions comprising crystalline diurethanes and derivatives thereof
    Patent number: 9528015
    Abstract: A phase change ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for ink jet printing, including printing on coated paper substrates and are suitable for fast printing processes. In particular, the crystalline component comprises a diurethane compound or derivatives thereof.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: December 27, 2016
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Jeffrey H. Banning, Jennifer L. Belelie, Gabriel Iftime, Kentaro Morimitsu, Peter G. Odell
  • GALVANIC PROCESS FOR MAKING PRINTED CONDUCTIVE METAL MARKINGS FOR CHIPLESS RFID APPLICATIONS
    Publication number: 20160353579
    Abstract: A process for printing a metal wire pattern on a substrate, including: printing a first salt solution including a metal ion that will undergo a reduction half-reaction; printing a second salt solution containing an oxidizing agent that will undergo an oxidation half-reaction in contact with the first salt solution, resulting in the reduction of the metal ions of the first salt solution; and allowing the first and second salt solutions to react by a galvanic reaction, causing reduced metal ions of the first salt solution to precipitate as a solid, on the substrate.
    Type: Application
    Filed: August 9, 2016
    Publication date: December 1, 2016
    Inventors: Naveen Chopra, Peter M. Kazmaier, Dominique J. Lalisse, Paul F. Smith
  • PHOTOCURABLE INKS FOR INDIRECT PRINTING
    Publication number: 20160333204
    Abstract: The present disclosure provides a photocurable ink comprising a radiation curable material selected from the group consisting of a curable monomer, a curable oligomer, and mixtures thereof; a photoinitiator; and a surfactant, which is suitable for use in an indirect printing method. The present disclosure also provides a method of printing using a photocurable ink.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Inventors: Michelle N. Chrétien, Jennifer L. Belelie, Naveen Chopra, Barkev Keoshkerian
  • Phase change ink containing amorphous amides
    Patent number: 9447297
    Abstract: A phase change ink composition comprising an amorphous amide compound, a crystalline compound; an optional synergist; an optional dispersant; and an optional colorant; wherein the amorphous amide compound is of the formula wherein R is selected from the group consisting of an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, and combinations thereof, or wherein the amorphous amide compound is of the formula wherein R1 is selected from the group consisting of an alkylene group, an arylene group, an alkylarylene group, an arylalkylene group, and combinations thereof.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: September 20, 2016
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Adela Goredema, Kentaro Morimitsu, Barkev Keoshkerian, Jennifer L. Belelie, Gabriel Iftime
  • Galvanic process for making printed conductive metal markings for chipless RFID applications
    Patent number: 9439293
    Abstract: A process for printing a metal wire pattern on a substrate, including: printing a first salt solution including a metal ion that will undergo a reduction half-reaction; printing a second salt solution containing a reductant that will undergo an oxidation half-reaction in contact with the first salt solution, resulting in the reduction of the metal ions of the first salt solution; and allowing the first and second salt solutions to react by a galvanic reaction, causing reduced metal ions of the first salt solution to precipitate as a solid, on the substrate.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: September 6, 2016
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Peter M. Kazmaier, Dominique J. Lalisse, Paul F. Smith
  • Nail polish compositions
    Patent number: 9427392
    Abstract: Personal care products for maintaining fingernail and toenail appearance. In particular, nail polish compositions that have a formulation that is both safer and more environmentally-friendly to use. The present nail polish compositions comprise anionic polyester resins such as sodio-sulfonated polyesters and sodio-sulfonated co-polyester-co-polysiloxane copolymers as base resin vehicles.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: August 30, 2016
    Assignee: XEROX CORPORATION
    Inventors: Guerino G. Sacripante, Adela Goredema, Naveen Chopra, Ke Zhou, Marcel P. Breton
  • 3D PRINTING SYSTEM COMPRISING SOLID BUILD INK COMPRISING COLORANT
    Publication number: 20160244628
    Abstract: A color three-dimensional (3D) printing system includes (1) a solid build ink for each of a plurality of colors, each solid build ink includes (a) a solid acrylate in an amount from about 40 to about 70 percent by weight, (b) a non-curable wax in an amount from about 10 to about 45 percent by weight, (c) a curable wax in an amount from about 1 to about 15 percent by weight, (d) a photoinitiator, and (e) a colorant; each solid build ink has a curing speed adjusted by a ratio of the non-curable wax to curable wax such that the initial curing speed and final hardness of each solid build ink is approximately the same for each of the plurality of colors, and (2) a support material includes the non-curable wax used in each build ink, the support material providing a scaffold for deposition of each build ink.
    Type: Application
    Filed: February 24, 2015
    Publication date: August 25, 2016
    Inventors: Marcel P. Breton, Jennifer L. Belelie, Michelle N. Chretien, Naveen Chopra, Barkev Keoshkerian
  • Bis-ureas as amorphous materials for phase-change ink
    Patent number: 9422440
    Abstract: An embodiment of the present disclosure is directed to an amorphous bis-urea compound having a formula 1: where X is a branched alkyl bridge and R? and R? are alkyl groups.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: August 23, 2016
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Adela Goredema, Kentaro Morimitsu, Stephan V. Drappel, Jeffrey H. Banning
  • Method of improving sheet resistivity of printed conductive inks
    Patent number: 9374907
    Abstract: A method of forming a printed pattern on a substrate includes printing a pattern onto the substrate with a conductive ink including a conductive material, a thermoplastic binder and a solvent, curing the printed pattern, and fusing the printed pattern by feeding the printed pattern through a fusing system operated at a temperature of about 20° C. to about 130° C. above the glass transition temperature of the thermoplastic binder and at least 120° C. at a minimum, a pressure of from about 50 psi to about 1500 psi, and a feed rate through the fusing system of about 1 m/min to about 100 m/min. The method may be done continuously. The method improves the sheet resistivity of the printed ink.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: June 21, 2016
    Assignee: XEROX CORPORATION
    Inventors: Gabriel Iftime, Yiliang Wu, Naveen Chopra, Cuong Vong, Michael D'Amato, Sandra J. Gardner, Kurt I. Halfyard, Adrien P. Côté
  • Curable inks comprising bis-urea gelators
    Patent number: 9328248
    Abstract: The disclosure provides a curable ink including a bis-urea gelator having the structure of Formula I. wherein R and R? each, independently of the other, is a saturated aliphatic hydrocarbon group selected from the group consisting of (1) linear aliphatic groups, (2) branched aliphatic groups, (3) cyclic aliphatic groups, (4) aliphatic groups containing both cyclic and acyclic portions, any carbon atom of the saturated aliphatic hydrocarbon group may be optionally substituted with an alkyl group (cyclic or acyclic), wherein (1) and (2) groups have a carbon number of from about 1 to about 22 carbons, and wherein (3) and (4) groups have a carbon number of from about 4 to about 10 carbons; and X is selected from the group consisting of: (i) an alkylene group, (ii) an arylene group, (iii) an arylalkylene group, and (iv) an alkylarylene group.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: May 3, 2016
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema