Patents by Inventor Barkev Keoshkerian

Barkev Keoshkerian 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: 20150085043
    Abstract: An intermediate transfer member containing a mixture of two or more inhomogeneous polymers or networks, wherein a first polymer or network has a higher surface energy than a second polymer or network and a method of forming the intermediate transfer member.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 26, 2015
    Applicant: XEROX CORPORATION
    Inventors: Barkev KEOSHKERIAN, Michelle N. CHRETIEN, Daryl W. VANBESIEN, Marcel P. BRETON, Jennifer L. BELELIE, Naveen CHOPRA
  • Publication number: 20150070454
    Abstract: An intermediate transfer member containing a thermally conductive nanofiller dispersed in a polymer base, a method of forming the intermediate transfer member, and a method of printing an image to a substrate using the intermediate transfer member.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 12, 2015
    Applicant: XEROX CORPORATION
    Inventors: Carolyn MOORLAG, Barkev KEOSHKERIAN, Yu QI, Brynn Mary DOOLEY
  • Patent number: 8940935
    Abstract: The disclosure provides curable inks 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: January 27, 2015
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema
  • Patent number: 8939565
    Abstract: A method of printing an image to a substrate includes applying an aqueous inkjet ink onto an intermediate receiving member using an inkjet printhead, optionally spreading the ink onto the intermediate receiving member, inducing a property change of the ink, and transferring the ink to a substrate, wherein the ink includes a curable oligomer. A method of printing an image to a substrate includes applying an aqueous inkjet ink onto an intermediate receiving member using an inkjet printhead, optionally spreading the ink onto the intermediate receiving member, inducing a property change of the ink, and transferring the ink to a substrate, wherein making the ink includes forming an aqueous mixture by adding a mixture of oligomers and a surfactant to a reactor containing a mixture of a humectant and an aqueous vehicle, heating and stirring the aqueous mixture, and homogenizing the aqueous mixture, forming the ink.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: January 27, 2015
    Assignee: Xerox Corporation
    Inventors: Jennifer L. Belelie, Daryl W. Vanbesien, Barkev Keoshkerian, Michelle N. Chretien, Marcel P. Breton, Naveen Chopra
  • Patent number: 8916084
    Abstract: A method for fabricating a three-dimensional object including depositing a first amount of an ultraviolet curable phase change ink composition comprising an optional colorant and a phase change ink vehicle comprising a radiation curable monomer or prepolymer; a photoinitiator; a reactive wax; and a gellant upon a print region surface; successively depositing additional amounts of the ultraviolet curable phase change ink composition to create a three-dimensional object; and curing the ultraviolet curable phase change ink composition.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: December 23, 2014
    Assignee: Xerox Corporation
    Inventors: Michelle N. Chrétien, Barkev Keoshkerian, Peter G. Odell, Jennifer L. Belelie, Christopher A. Wagner, Naveen Chopra
  • Publication number: 20140368588
    Abstract: A phase change ink composition including an amorphous compound; a crystalline compound; a polyester polymer, wherein the polyester has a molecular weight of from about 500 to about 8,000 and a polydispersity index of from about 1.0 to about 8.0; an optional synergist; an optional dispersant; and a colorant. A process including (1) incorporating into an ink jet printing apparatus the phase change ink composition; (2) melting the ink; and (3) causing droplets of the melted ink to be ejected in an imagewise pattern onto a substrate. An ink jet printer stick or pellet including the phase change ink composition.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Inventors: Barkev Keoshkerian, Valerie M. Farrugia, Jenny Eliyahu, Gordon Sisler, Biby Esther Abraham, Stephan V. Drappel
  • Publication number: 20140354746
    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: Application
    Filed: May 28, 2013
    Publication date: December 4, 2014
    Applicant: XEROX CORPORATION
    Inventors: Brynn Mary DOOLEY, Carolyn P. MOORLAG, Anthony James WIGGLESWORTH, Adrien Pierre COTE, Yu QI, Barkev KEOSHKERIAN
  • Patent number: 8882256
    Abstract: Disclosed herein are curable solid inks which are solid at room temperature and molten at an elevated temperature at which the molten ink is applied to a substrate. In particular, the curable solid inks of the present embodiments comprise low molecular weight amide gellants that impart self-leveling capabilities to the inks. Also disclosed herein are methods for making the amide gellant and the inks comprising the amide gellants.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 11, 2014
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Barkev Keoshkerian, Daryl W. Vanbesien, Jenny Eliyahu, Stephan V. Drappel, Jeffrey H. Banning, James M. Chappell, Fusheng Xu, Paul J. McConville
  • Publication number: 20140295338
    Abstract: A method for preparing a pigment dispersion includes milling a starting pigment dispersion containing a pigment and optionally a carrier and a dispersant with milling media having an average particle size of about 100 ?m or less, until a final pigment dispersion having at least one of a desired pigment average particle size and a desired pigment particle size distribution is obtained; optionally separating the milling media from the final pigment dispersion; and optionally diluting the final pigment dispersion to obtain a desired pigment particle concentration.
    Type: Application
    Filed: March 29, 2013
    Publication date: October 2, 2014
    Applicant: XEROX CORPORATION
    Inventors: Barkev KEOSHKERIAN, C. Geoffrey ALLEN, Naveen CHOPRA, Michelle N. CHRETIEN, Daryl W. VANBESIEN, Jenny ELIYAHU
  • Patent number: 8801954
    Abstract: There is provided novel curable ink compositions comprising coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink, a gellant. The inks may also include optional colorants and one or more optional additives. These curable gel UV ink compositions can be used for ink jet printing in a variety of applications.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: August 12, 2014
    Assignee: Xerox Corporation
    Inventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
  • Publication number: 20140213820
    Abstract: The disclosure provides curable inks 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: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema
  • Publication number: 20140213816
    Abstract: The disclosure provides a diurethane gelator having the structure of Formula I. wherein R1 and R1? each, independently of the other, is a C1-C22 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: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema
  • Publication number: 20140213682
    Abstract: The disclosure provides curable inks including a diurethane gelator having the structure of Formula I. wherein R and R? each, independently of the other, is a C1-C22 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: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema
  • Publication number: 20140213684
    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: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema
  • Publication number: 20140204160
    Abstract: An intermediate image transfer member for indirect printing contains a layer containing a structured organic film (SOF). The SOF contains a plurality of segments including at least a first segment type and a plurality of linkers comprising at least a first linker type, arranged as a covalent organic framework (COF), where at least the first segment type optionally contains fluorine.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: XEROX CORPORATION
    Inventors: Adrien Pierre COTE, Matthew A. HEUFT, Michelle N. CHRETIEN, Barkev KEOSHKERIAN
  • Publication number: 20140204159
    Abstract: A crosslinked siloxane composition contains the polymerization product of a mixture containing from about 2 to about 12 alkoxysilane precursor materials, where at least one of the alkoxysilane precursor materials is a hydrophilic alkoxysilane precursor material, and at least one of the alkoxysilane precursor materials is a hydrophobic alkoxysilane precursor material. A method of printing an image to a substrate involves applying an inkjet ink to an intermediate transfer member using an inkjet printhead, spreading the ink onto the transfer member, inducing a property change of the ink, and transferring the ink to a substrate, where the intermediate transfer member comprises a crosslinked siloxane composition containing the polymerization product of a mixture comprising from about 2 to about 12 alkoxysilane precursor materials, where at least one of the precursor materials is hydrophilic and at least one is hydrophobic.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: XEROX CORPORATION
    Inventors: Brynn Mary DOOLEY, Carolyn P. MOORLAG, Anthony James WIGGLESWORTH, Adrien Pierre COTE, Yu QI, Barkev KEOSHKERIAN
  • Publication number: 20140204162
    Abstract: An aqueous latex ink includes a polymer latex having a particle size of less than about 100 nm. A method of making an aqueous latex ink includes emulsifying a polymer without the use of a surfactant to prepare a latex having a particle size of less than 100 nm. A method of printing an image on a substrate includes applying an aqueous latex ink to an intermediate receiving member using an inkjet printhead, spreading the ink onto the intermediate receiving member, inducing a property change of the ink, and transferring the ink to a substrate, wherein the ink comprises a latex having a particle size of less than about 100 nm.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: XEROX CORPORATION
    Inventors: Barkev KEOSHKERIAN, Daryl W. VANBESIEN, Michelle N. CHRETIEN, Marcel P. BRETON, Jenny ELIYAHU
  • Publication number: 20140204155
    Abstract: An aqueous inkjet ink includes a latex having a bimodal molecular weight distribution. A method of making an aqueous inkjet ink includes adding a dispersion of surfactant and carbon black to a reactor, adding a latex having a bimodal molecular weight to the reactor resulting in a reaction mixture, and homogenizing the reaction mixture, forming the ink. A method of printing an image to a substrate includes applying an aqueous inkjet ink onto an intermediate receiving member using an inkjet printhead, spreading the ink onto the intermediate receiving member, inducing a property change of the ink, and transferring the ink to a substrate, wherein the ink includes a latex having a bimodal weight distribution.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: XEROX CORPORATION
    Inventors: Daryl W. VANBESIEN, Barkev KEOSHKERIAN, Michelle N. CHRETIEN, Marcel P. BRETON, Jenny ELIYAHU
  • Publication number: 20140204161
    Abstract: A method of printing an image to a substrate includes applying an aqueous inkjet ink onto an intermediate receiving member using an inkjet printhead, optionally spreading the ink onto the intermediate receiving member, inducing a property change of the ink, and transferring the ink to a substrate, wherein the ink includes a curable oligomer. A method of printing an image to a substrate includes applying an aqueous inkjet ink onto an intermediate receiving member using an inkjet printhead, optionally spreading the ink onto the intermediate receiving member, inducing a property change of the ink, and transferring the ink to a substrate, wherein making the ink includes forming an aqueous mixture by adding a mixture of oligomers and a surfactant to a reactor containing a mixture of a humectant and an aqueous vehicle, heating and stirring the aqueous mixture, and homogenizing the aqueous mixture, forming the ink.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: XEROX CORPORATION
    Inventors: Jennifer L. BELELIE, Daryl W. VANBESIEN, Barkev KEOSHKERIAN, Michelle N. CHRETIEN, Marcel P. BRETON, Naveen CHOPRA
  • Patent number: 8779021
    Abstract: The disclosure provides curable inks including a diurethane gelator having the structure of Formula I. wherein R and R? each, independently of the other, is a C1-C22 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: July 15, 2014
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Michelle N. Chretien, Barkev Keoshkerian, Jenny Eliyahu, Daryl W. Vanbesien, Adela Goredema