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: 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
  • Publication number: 20160122549
    Abstract: This disclosure is directed to functionalized carbon black material that may be particularly usable for as a filler material to a number of beneficial uses, particularly in image forming devices. The disclosed functionalized carbon black material compositions include hydrophobic carbon black particles passivated with polymerized pentafluorostyrene. The disclosed surface passivated carbon black particles have a diameter in a range of 50 nanometers to 1 micron, and enable dispersion in fluorinated polymers, and fine dispersion in solvent. The disclosed surface passivated carbon black particles are particularly usable for improving operational characteristics of fluorosilicone-based reimageable surface layers of imaging members employed in variable data digital lithographic image forming devices.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 5, 2016
    Inventors: Barkev KEOSHKERIAN, Carolyn MOORLAG, Marcel BRETON, Sandra GARDNER, C. Geoffrey ALLEN
  • 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
  • Patent number: 9309419
    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: Grant
    Filed: April 24, 2014
    Date of Patent: April 12, 2016
    Assignee: 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
  • Patent number: 9303135
    Abstract: An aqueous ink for indirect printing applications including water; a co-solvent; a colorant; and a polymer latex comprising an aqueous dispersion of polymer particles wherein the polymer latex has a softening temperature of from about 60° C. to less than 105° C. and a glass transition temperature of from about 45° C. to about 100 C.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: April 5, 2016
    Assignee: Xerox Corporation
    Inventors: Jenny Eliyahu, Daryl W. Vanbesien, Michelle N. Chrétien, Marcel P. Breton, Barkev Keoshkerian
  • 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: 9296203
    Abstract: An intermediate transfer member containing a blend of materials including a base polymer and a stimulus-responsive additive, an intermediate transfer member containing a first layer including a base polymer and a second layer grafted onto the first layer and including a stimulus-responsive additive, and a method of printing an image to a substrate.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 29, 2016
    Assignee: XEROX CORPORATION
    Inventors: Gabriel Iftime, Carolyn Moorlag, Sarah Vella, Barkev Keoshkerian, Michelle N. Chretien
  • Patent number: 9279059
    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: Grant
    Filed: January 22, 2013
    Date of Patent: March 8, 2016
    Assignee: XEROX CORPORATION
    Inventors: Daryl W. Vanbesien, Barkev Keoshkerian, Michelle N. Chretien, Marcel P. Breton, Jenny Eliyahu
  • Publication number: 20160046079
    Abstract: A process including depositing a non-curable wax to form a mold; depositing one or more layers of an ultra-violet curable phase change gellant ink onto the mold; curing the ink layers; and removing the mold. A process including an ink set comprising a plurality of differently colored curable phase change inks, wherein each ink of the ink set comprises an ink vehicle, a gelling agent, a pigment, and a dispersant, wherein the dispersant is identical in each colored ink and the dispersant is present in a substantially same amount in each colored ink; combining at least two inks from the set prior to depositing; melting the at least two inks; mixing the at least two inks to form a custom color ink; depositing one or more layers of the custom color ink onto the mold; curing the one or more layers; and removing the mold.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 18, 2016
    Inventors: Jennifer L. Belelie, Barkev Keoshkerian, Marcel P. Breton, Naveen Chopra, Michelle N. Chrétien
  • 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: 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
  • 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