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).

  • Patent number: 9243148
    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: Grant
    Filed: March 29, 2013
    Date of Patent: January 26, 2016
    Assignee: XEROX CORPORATION
    Inventors: Barkev Keoshkerian, C. Geoffrey Allen, Naveen Chopra, Michelle N. Chretien, Daryl W. Vanbesien, Jenny Eliyahu
  • Patent number: 9227922
    Abstract: An amorphous amide compound 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. An amorphous diamide compound 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: January 5, 2016
    Assignee: Xerox Corporation
    Inventors: Naveen Chopra, Adela Goredema, Kentaro Morimitsu, Barkev Keoshkerian, Jennifer L. Belelie
  • Patent number: 9211697
    Abstract: A transfix surface member for use in aqueous ink jet printer comprises a substrate. A conformance layer is disposed on the substrate layer. A surface layer comprising a siloxane polymer network is on the conformance layer. The siloxane polymer network comprises a plurality of diphenylsiloxane moieties and a plurality of polar moieties, the diphenylsiloxane moieties and polar moieties being bonded to the siloxane polymer network by one or more siloxane linkages. An indirect printing apparatus employing the transfix surface member is also disclosed.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: December 15, 2015
    Assignee: XEROX CORPORATION
    Inventors: Brynn Dooley, Gabriel Iftime, Gordon Sisler, Barkev Keoshkerian
  • 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
  • Patent number: 9193883
    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: Grant
    Filed: June 18, 2013
    Date of Patent: November 24, 2015
    Assignee: Xerox Corporation
    Inventors: Barkev Keoshkerian, Valerie M. Farrugia, Jenny Eliyahu, Gordon Sisler, Biby Esther Abraham, Stephan V. Drappel
  • 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
  • Publication number: 20150307723
    Abstract: An ink for a printer may include one or more latexes in an amount from about 0.1 wt % to about 15 wt %, one or more amines in an amount from about 0 wt % to about 2 wt %, and one or more pigments in an amount from about 0.5 wt % to about 8 wt %. The ink may also include four or more solvents that, in the aggregate, are present in an amount from about 10 wt % to about 50 wt %. The ink may further include one or more surfactants in an amount from about 0.001 wt % to about 3 wt %.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 29, 2015
    Applicant: XEROX CORPORATION
    Inventors: MARCEL P. BRETON, BIBY ESTHER ABRAHAM, JAMES D. MAYO, VALERIE M. FARRUGIA, JENNY ELIYAHU, ADELA GOREDEMA, BARKEV KEOSHKERIAN, YVAN GAGNON, GABRIEL IFTIME
  • Publication number: 20150283758
    Abstract: A method for forming a three-dimensional object using layer by layer formation of the object through application of stereolithography. More specifically, the formation of a three-dimensional object using a three-dimensional printer based on thermal stereolithography and phase change materials comprising a combination of crystalline and amorphous compounds.
    Type: Application
    Filed: April 8, 2014
    Publication date: October 8, 2015
    Applicant: Xerox Corporation
    Inventors: Adela Goredema, Jennifer L. Belelie, Marcel P. Breton, Barkev Keoshkerian
  • Publication number: 20150283759
    Abstract: A method for forming a three-dimensional object using layer by layer formation of the object through application of stereolithography. More specifically, the formation of a three-dimensional object using a three-dimensional printer based on thermal stereolithography and phase change materials comprising a combination of crystalline and amorphous compounds, that are derived from low cost, stable and bio-renewable materials.
    Type: Application
    Filed: April 8, 2014
    Publication date: October 8, 2015
    Applicant: XEROX CORPORATION
    Inventors: Adela Goredema, Jennifer L. Belelie, Marcel P. Breton, Barkev Keoshkerian
  • 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
  • Publication number: 20150266290
    Abstract: A transfix surface member for use in aqueous ink jet printer comprises a substrate. A conformance layer is disposed on the substrate layer. A surface layer comprising a siloxane polymer network is on the conformance layer. The siloxane polymer network comprises a plurality of diphenylsiloxane moieties and a plurality of polar moieties, the diphenylsiloxane moieties and polar moieties being bonded to the siloxane polymer network by one or more siloxane linkages. An indirect printing apparatus employing the transfix surface member is also disclosed.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 24, 2015
    Applicant: XEROX CORPORATION
    Inventors: Brynn Dooley, Gabriel Iftime, Gordon Sisler, Barkev Keoshkerian
  • Patent number: 9133354
    Abstract: The present disclosure provides a curable aqueous latex ink comprising a curable material, a photoinitiator and a polyester polymer, which is suitable for use in an indirect printing method.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 15, 2015
    Assignee: XEROX CORPORATION
    Inventors: Jennifer L. Belelie, Michelle N. Chrétien, Daryl W. Vanbesien, Jenny Eliyahu, Barkev Keoshkerian, Naveen Chopra
  • Patent number: 9120939
    Abstract: An emulsified aqueous ink for use in an indirect printing process including: a reactive alkoxysilane; a surfactant; a solvent and co-solvent mixture having water; and a colorant, wherein the ink forms a cross-linked film containing siloxane linkages when the reactive alkoxysilane is hydrolyzed and condensed with heat.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Jennifer L. Belelie, Barkev Keoshkerian, Michelle Chrétien
  • Patent number: 9120943
    Abstract: A phase change ink composition suitable for ink jet printing, including printing on coated paper substrates. In embodiments, the phase change ink composition comprises a bio-renewable crystalline component and amorphous component which provides for a robust ink composition. In embodiments, the amorphous component is derived from low cost, stable and bio-renewable materials comprising aromatic rosin esters.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: September 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Adela Goredema, Jennifer Belelie, James Daniel Mayo, Daryl W. Vanbesien, Barkev Keoshkerian, Nathan Bamsey, Jenny Eliyahu
  • Patent number: 9109067
    Abstract: An intermediate transfer member containing a multi-block copolymer containing at least an A block and a B block, wherein the A block has a higher surface energy than the B block, and a method of forming an intermediate transfer member. A method of printing an image to a substrate including applying an ink onto the 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.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: August 18, 2015
    Assignee: XEROX CORPORATION
    Inventors: Barkev Keoshkerian, Michelle N. Chretien, Daryl W. Vanbesien, Marcel P. Breton, Jennifer L. Belelie, Naveen Chopra
  • Patent number: 9109140
    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: Grant
    Filed: January 22, 2013
    Date of Patent: August 18, 2015
    Assignee: XEROX CORPORATION
    Inventors: Brynn Mary Dooley, Carolyn P. Moorlag, Anthony James Wigglesworth, Adrien Pierre Cote, Yu Qi, Barkev Keoshkerian
  • Patent number: 9096767
    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 ink of the present embodiments comprises a cyclohexyl-based crystalline gellant that impart self-leveling capabilities to the inks, where the cyclohexyl-based crystalline gellant have a structure of Formula I: wherein each X, Y, p, q, R1, R2, R3, and R4 are as defined herein.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 4, 2015
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Barkev Keoshkerian, Daryl Vanbesien, Jenny Eliyahu, Stephan Drappel, Jeffrey Banning, James M. Chappell, Fusheng Xu, Paul J. McConville
  • Patent number: 9085546
    Abstract: Disclosed herein are ester-terminated polyamide gellant compounds end-caped with isosorbide and UV curable ink compositions containing them.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: July 21, 2015
    Assignee: XEROX CORPORATION
    Inventors: Naveen Chopra, Michelle N. Chrétien, Barkev Keoshkerian, Daryl Vanbesien, Jenny Eliyahu
  • Patent number: 9074105
    Abstract: An emulsified UV curable ink comprising water, an amide gellant, a curable monomer, a photoinitiator; which is suitable for use in an indirect printing method.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: July 7, 2015
    Assignee: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Michelle N. Chretien, Barkev Keoshkerian, Jennifer L. Belelie, Jenny Eliyahu, Naveen Chopra, Valerie M. Farrugia
  • Patent number: 9062226
    Abstract: Compositions of pigment concentrate suitable for phase change ink comprising a an ink base and an amine based dispersant. Particularly, the ink base includes a diester crystalline compound having a structure of Formula I: wherein each R1, R2, R3, and R4 is independently H or alkyl; p is from about 1 to about 40, and q is from about 1 to about 40.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: June 23, 2015
    Assignee: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Barkev Keoshkerian, James Daniel Mayo, Adela Goredema, Jennifer L. Belelie