Identified Adjuvant, I.e., Surfactant, Etc. Patents (Class 430/115)
  • Patent number: 10372053
    Abstract: Provided is a recorded material in which a recording liquid is satisfactorily fixed to a recording medium and which has a sufficient chroma and a sufficient lightness, in high-speed printing. The recorded material comprises a recording medium, a toner particle including colorant particles, and a cured resin including the toner particle and fixing a toner image formed of the toner particle onto the recording medium, wherein an average circularity of the toner particle is not less than 0.70 and not more than 0.99, the toner particle is not exposed from a surface of the cured resin, and an average distance between wall surfaces of the adjacent toner particles is not less than 10 nm and less than 125 nm.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 6, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toru Kabashima, Shuhei Takahashi, Shuichi Tamura, Shinichirou Yoshikawa, Toshihiko Sugimoto, Erito Machida, Junji Ito, Jiro Ishizuka, Yuji Nakayama, Koji Amemiya
  • Patent number: 10361425
    Abstract: A random copolymer including a first repeating unit represented by Formula 1 and a second repeating unit represented by Formula 2 in a molar ratio of about 1:99 to about 99:1, wherein the polymer has a degree of polymerization of about 10 to about 5,000: wherein CY1, CY2, A, X, R2, R3, R4, R5, R6, R7, and Y? are the same as defined in the detailed description.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: July 23, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Hongsoo Choi, Tomonobu Mizumo, Jinkyu Kim, Myungjin Lee, Yonggun Lee, Wonseok Chang
  • Patent number: 10310400
    Abstract: A developer for electrostatic latent image contains toner particles. The toner particles contain a resin and a coloring agent, and the coloring agent includes a first coloring agent, a second coloring agent, and a third coloring agent. The first coloring agent is carbon black, the second coloring agent is one or more of C. I. Pigment Violet 19 and C. I. Pigment Violet 23, and the third coloring agent is one or more of C. I. Pigment Brown 23 and C. I. Pigment Brown 25. A content of the second coloring agent is not lower than 8 mass % and not higher than 25 mass % with respect to a total amount of the coloring agents.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: June 4, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Chiaki Yamada, Masahiro Anno
  • Patent number: 10248025
    Abstract: Flexographic printing members are prepared by developing an exposed flexographic printing member precursor with an aqueous flexographic developer. The aqueous flexographic developer comprises: a) a fatty acid composition consisting of one or more saturated or unsaturated fatty acids or alkali metal salts thereof, each saturated or unsaturated fatty acid or alkali metal salt thereof independently having 12 to 20 carbon atoms, the fatty acid composition being present in an amount of 0.25-2.0 weight %, and at least 85 weight % of the fatty acid composition is composed of one or more C18 mono- or poly-unsaturated fatty acids or alkali metal salts thereof; b) an aminopolycarboxylic acid or alkali metal salt thereof in an amount of 0.05-0.30 weight %; c) a buffer compound in an amount of 05-0.60 weight %; and d) water. Such aqueous flexographic developers can also be provided in concentrated form and appropriately diluted before or during use.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: April 2, 2019
    Assignee: EASTMAN KODAK COMPANY
    Inventors: Richard R. Ollmann, Jr., Elsie Anderson Fohrenkamm, Fredrick Charles Mellema
  • Patent number: 10234784
    Abstract: A liquid developer containing toner particles containing a resin containing a polyester and a pigment, wherein the toner particles are dispersed in an insulating liquid in the presence of a dispersant, wherein the insulating liquid has an evaporation rate after holding at 40° C. for 30 minutes of less than 0.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 19, 2019
    Assignee: Kao Corporation
    Inventors: Nobumichi Kamiyoshi, Tatsuya Yamada
  • Patent number: 10175597
    Abstract: Provided is a liquid developer that gives a high image density, has a high resistance, suppresses the appearance of image blurring, can be reused, is readily cured by ultraviolet radiation, and can accommodate higher process speeds. This liquid developer contains a carrier liquid, a toner particle insoluble in the carrier liquid, and a compound with the following formula (1) [In formula (1), R1 and R2 each independently represent an alkyl group having at least 13 and not more than 23 carbons.].
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 8, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jun Shirakawa, Junji Ito, Yasuhiro Aichi
  • Patent number: 10005853
    Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a halogenated isoolefin copolymer and at least one phosphorus based nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: June 26, 2018
    Assignee: LANXESS International SA
    Inventors: Gregory J. E. Davidson, Dana Adkinson, Sean Malmberg, Lorenzo Ferrari, Conrad Siegers, Sarah Chadder
  • Patent number: 9983498
    Abstract: A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin; suspending in the carrier fluid white pigment particles to be coated; and cooling the carrier fluid at a rate of 2° C./hr or less to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the pigment particles, thereby producing the white liquid electrophotographic ink composition.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 29, 2018
    Assignee: HP Indigo B.V.
    Inventors: Adi Mann, Eyal Handel, Albert Teishev, Marc Klein, Vladislav Kaploun
  • Patent number: 9983497
    Abstract: A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin, suspending in the carrier fluid the pigment particles to be coated; and effecting precipitation of the polymer resin from the carrier fluid, such that a coating of the resin is formed on the pigment particles.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 29, 2018
    Assignee: HP Indigo B.V.
    Inventors: Adi Mann, Albert Teishev, Eyal Handel, Marc Klein, Olga Kagan, Yaron Grinwald, Vladislav Kaploun
  • Patent number: 9944808
    Abstract: A non-aqueous pigment ink that includes a colorant and a non-aqueous solvent, wherein the colorant is a pigment complex of a pigment, a dispersant and an amine compound, the amine compound is a diamine and/or triamine comprising two or more primary and/or secondary amino groups within each molecule, and the dispersant comprises two or more reactive functional groups within each molecule that exhibit reactivity with the amino groups of the amine compound.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: April 17, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Shunsuke Uozumi, Ayako Mochizuki
  • Patent number: 9921512
    Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin comprising a polymer having acidic side groups, and a cyclic anhydride. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 20, 2018
    Assignee: HP Indigo B.V.
    Inventors: Gil Bar-Haim, Alina Grishman
  • Patent number: 9880482
    Abstract: The ultraviolet-curable liquid developer contains a hydrophobic cationically polymerizable liquid monomer, a photopolymerization initiator, a toner particle insoluble in the liquid monomer, and a toner particle dispersing agent, wherein the toner particle contains a binder resin that has an acid value of at least 5 mg KOH/g; the toner particle dispersing agent is a polymer that contains at least both a monomer unit represented by general formula (1) and a monomer unit represented by general formula (2); and the toner particle dispersing agent has a monomer unit represented by general formula (1) at a position other than the terminal position.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 30, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Waka Hasegawa, Ryo Natori, Ayano Mashida, Junji Ito, Yasuhiro Aichi, Jun Shirakawa
  • Patent number: 9857714
    Abstract: A method of making a liquid electrophotographic (LEP) paste is disclosed herein. A base paste is made by forming a dispersion of a pigment and a non-polar carrier, adding a transparent resin dispersion to the pigment dispersion to form a dispersion mixture, and homogenizing the dispersion mixture. The transparent resin dispersion includes a polymer dispersed in a non-aqueous carrier. The homogenizing may be accomplished by agitating the dispersion mixture at a frequency of less than 1 kHz, thereby forming the paste.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: January 2, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Doris Pik-Yiu Chun
  • Patent number: 9823597
    Abstract: A method for coating pigment particles is provided, the method comprising heating a polymer resin in a carrier fluid to dissolve the polymer resin; suspending in the carrier fluid white pigment particles to be coated; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the pigment particles; reheating the suspension of partially coated white pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the pigment particles, thereby producing the white liquid electrophotographic ink composition.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: November 21, 2017
    Assignee: Hewlett-Parkard Indigo B.V.
    Inventors: Adi Mann, Eyal Handel, Albert Teishev, Marc Klein
  • Patent number: 9798265
    Abstract: The present invention can provide a liquid developer that can accommodate faster process speeds by image forming apparatuses, in which the liquid developer contains a toner particle comprising a polyester resin, and a carrier liquid having a vinyl ether compound. The liquid developer further contains a polymer compound having a structural unit represented by formula (1) in either of the toner particle or the carrier liquid.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 24, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kei Inoue, Kenji Nishiguchi
  • Patent number: 9725589
    Abstract: A process for preparing a composition by free-radical polymerization of a monomer composition comprising: a) at least one ethylenically unsaturated carboxylic acid containing monomer or anhydride thereof; b) optionally at least one ethylenically unsaturated monomer different from a) but copolymerizable therewith; and c) at least one crosslinking monomer containing at least two ethylenically unsaturated groups. The monomer composition is polymerized in an organic medium having a solubilizing effect on one or more of the monomeric ingredients, but substantially none on the resulting polymer. The polymerization is conducted in the presence of a free radical forming catalyst and at least one steric stabilizing polymer polymerized from a vinyl lactam and a copolymerizable monomer selected from a short chain alkyl ester of (meth)acrylic acid, a long chain alkyl ester of (meth)acrylic acid, and combinations thereof.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 8, 2017
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: Wei-Yeih Yang
  • Patent number: 9568849
    Abstract: A liquid developer contains a carrier liquid and a toner particle which contains a binder resin, wherein the toner particles have a content of aluminum measured by fluorescent X-ray analysis in a range of from 0.04% by weight to 0.1% by weight of total elements.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: February 14, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Akira Imai, Koji Horiba, Daisuke Yoshino, Takako Kobayashi, Masahiro Oki, Yoshitake Ogura, Hiroyuki Moriya, Yoshihiro Inaba
  • Patent number: 9568850
    Abstract: A positively chargeable toner includes at least a binder resin, and toner particles of which surfaces are modified by a polyvinylamine compound.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: February 14, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Oki, Akira Imai, Yoshihiro Inaba, Takako Kobayashi, Daisuke Yoshino, Hiroyuki Moriya, Koji Horiba
  • Patent number: 9410050
    Abstract: Provided are high viscosity essentially non-aqueous dispersions containing acrylic core/shell polymer particles in a non-aqueous solvent; sheetfed, heatset and coldset lithographic ink compositions containing the dispersions; and methods of printing with ink containing the dispersions to improve the setting and drying properties and rub resistance of sheet fed offset, heatset and coldset lithographic inks. The lithographic inks containing the dispersions set quickly enough to allow processing of printed sheets soon after printing.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: August 9, 2016
    Assignee: Sun Chemical Corporation
    Inventors: Jerome Bollard, Ramasamy Krishnan, Christian Johnke, Hiroyuki Sugiyama, Mark Schneider, David Klein
  • Patent number: 9395638
    Abstract: The present invention relates to a liquid electrophotographic ink comprising a carrier liquid, a pigmented resin composite dispersed in the carrier liquid, and about 0.15 to about 10% (w/w) of an organic wax. The liquid electrophotographic ink is typically formulated for printing in a liquid electrophotographic printer.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: July 19, 2016
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Stella Stolin Roditi, Haim Cohen, Getahun Biadglin, Fernanda Orlik, Nava Klein, Albert Teishev
  • Patent number: 9388258
    Abstract: The present invention relates to ionomers comprising a reaction product of the reaction between a halogenated isoolefin copolymer and at least one phosphorus based nucleophile comprising at least one pendant vinyl group. The present invention also relates to a method of preparing and curing these ionomers.
    Type: Grant
    Filed: November 24, 2011
    Date of Patent: July 12, 2016
    Assignee: LANXESS INTERNATIONAL SA
    Inventors: Gregory Davidson, Dana Adkinson, Sean Malmberg, Lorenzo Ferrari, Conrad Siegers, Sarah Chadder
  • Patent number: 9353267
    Abstract: A charge director material for charging a liquid toner, the charge director material comprising (a) nanoparticles of a simple salt and (b) a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula (I) [R1—O—C(O)CH2CH(SO3?)C(O)—O—R2],??(I) wherein each of R1 and R2 is an alkyl group; said charge director material being substantially free of acids of the general formula (I), wherein one or both of R1 and R2 is hydrogen, and if only one of them is hydrogen, the other is an alkyl group.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 31, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yaacov Almog, Avi Koller, Elliad Silcoff, Albert Teishev, Yaffa Israeli, Gary Larson, Lufei Lin
  • Patent number: 9316939
    Abstract: A liquid developer is obtained by dispersing toner particles containing a core resin, a shell resin different from the core resin, and a coloring agent in an insulating liquid. The core resin contains a crystalline urethane-modified polyester resin. A solid content of the liquid developer corresponding to a portion of the liquid developer excluding the insulating liquid has a storage elastic modulus at 80° C., not lower than 1×104 Pa and not higher than 5×106 Pa. A lowest temperature at the time when an absolute value of an amount of change in a logarithmic value (log(G?)) of a storage elastic modulus (G?) of the solid content of the liquid developer with respect to a temperature T (° C.) (|? log(G?)/?T|) satisfies an Equation (1) below is not lower than 45° C.: |? log(G?)/?T|>0.1??Equation (1).
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: April 19, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Nofumi Mizumoto, Naoki Yoshie, Yuya Iwagoe, Satoshi Matsumoto
  • Patent number: 9250553
    Abstract: A liquid developer includes a carrier liquid having insulation property, colored particles, and an organic high molecular compound. The organic high molecular compound is dissolved in the carrier liquid. The organic high molecular compound includes elastomer A that is a styrene-butadiene-based elastomer not having an acid group or a basic group and elastomer B that is a styrene-based elastomer having an acid group or a basic group. A content of the elastomer A in the liquid developer is 6% by mass or more and 8% by mass or less, and a content of the elastomer B in the liquid developer is 0.4% by mass or more and 0.8% by mass or less. The colored particles include aniline black.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: February 2, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Katsuki Osanishi
  • Patent number: 9244370
    Abstract: A method for making polymer-encapsulated metallic ink particles is disclosed herein. An ethylene-based polymeric resin powder is formed, and is mixed with a metallic pigment powder to form a powder mixture. The powder mixture is melted to form a metallic polymer melt. A non-polar carrier is added to the metallic polymer melt to form a slurry. The slurry is processed in a microfluidizer.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: January 26, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Doris Chun, Hou T. Ng, Albert Teishev
  • Patent number: 9169414
    Abstract: Toner particles contained in a liquid developer have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The second resin satisfies Equations (1) to (2) below. In Equations (1) to (2) below, x represents a number average molecular weight of the second resin and y represents a urethane group concentration (mass %) in the second resin. ?0.00003x+2.03?y??0.00003x+6.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 27, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yukiko Uno, Satoshi Matsumoto, Naoki Yoshie, Kenji Hayashi
  • Patent number: 9156256
    Abstract: A process for forming an image on a substrate, comprises depositing ink compositions of at least two colors onto the substrate to form the image, and fixing the image to the substrate, wherein the ink is deposited using an electrostatic printhead, which ejects chargeable marking particles dispersed in a carrier fluid by using an applied electric field to first concentrate and then eject the marking particles, and wherein all of the ink compositions are deposited onto the substrate before the image is fixed. An ink composition suitable for use in the invention comprises: 45-95% by weight of a carrier liquid; 6-40% by weight of insoluble chargeable marking particles; and 0.4-10% by weight of a soluble dispersant, characterized in that the ink does not contain an agent that can fix the marking particles to a substrate.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: October 13, 2015
    Assignee: TONEJET LIMITED
    Inventors: Sean Dennis Slater, Andrew John Clippingdale, Guy Charles Fernley Newcombe
  • Patent number: 9017915
    Abstract: The present disclosure provides inks, systems, and methods directed towards dispersed pigments. In one embodiment, an electrophotographic ink can comprise an aliphatic solvent and a pigment having a surface comprising carbonyl groups stabilized by an amine dispersant having the structure: R1R2N[(CH2)nNR5]m(CH2)pNR3R4, where R1, R3, R4, and R5 are independently selected from the group of H; COR6; COOR6; CONHR6; linear or branched, substituted or unsubstituted, alkyl; linear or branched, substituted or unsubstituted, aryl; and combinations thereof; R2 is an aliphatic polymer chain; R6 is selected from the group of H; linear or branched, substituted or unsubstituted, alkyl; linear or branched, substituted or unsubstituted, aryl; and combinations thereof; m is from 0 to 200; n is from 1 to 20; and p is from 1 to 20; where the electrophotographic ink has a low field conductivity of less than 200 pS/cm and a viscosity from about 0.5 to about 40 cps.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: April 28, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Hou T. Ng
  • Publication number: 20150111149
    Abstract: A method of making a liquid electrophotographic (LEP) paste is disclosed herein. A base paste is made by forming a dispersion of a pigment and a non-polar carrier, adding a transparent resin dispersion to the pigment dispersion to form a dispersion mixture, and homogenizing the dispersion mixture. The transparent resin dispersion includes a polymer dispersed in a non-aqueous carrier. The homogenizing may be accomplished by agitating the dispersion mixture at a frequency of less than 1 kHz, thereby forming the paste.
    Type: Application
    Filed: May 31, 2012
    Publication date: April 23, 2015
    Inventor: Doris Chun
  • Patent number: 9012119
    Abstract: A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (?SP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: April 21, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Keitaro Mori, Satoshi Tatsuura, Yutaka Nogami
  • Patent number: 8999616
    Abstract: A plurality of flakes are provided that can be used in ink or paint wherein the flakes are of a size that requires magnification to see their shape, in the form of polygons, such as squares, triangle or rectangles. A breaking or grinding process is used to break a foil into these shaped flakes and frames or walls are provided within the foil sheet so as to delineate the shapes and these lines provided by frames or walls will facilitate breakage in a preferred manner such that the flakes break into selected shaped polygons. Remnants are typically present along flake edges due to the grinding and breakage process however with magnification, one can see the resultant regular polygonal shape. To clearly see the remnants one requires increased magnification and the remnant itself provides a type of signature. It can be seen as a taggent within a taggent.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: April 7, 2015
    Assignee: JDS Uniphase Corporation
    Inventors: Alberto Argoitia, Cornelis Jan Delst
  • Publication number: 20150086920
    Abstract: A resin in a liquid developer contains a first resin which is a urethane-modified polyester resin resulting from increase in chain length of a component derived from a polyester resin by a compound containing an isocyanate group and a second resin. The first resin is contained by not lower than 70 mass % with respect to a total of the first resin and the second resin. The component derived from the polyester resin includes a constitutional unit derived from an acid component and a constitutional unit derived from an alcohol component. A ratio of a constitutional unit derived from an aliphatic monomer occupied in the constitutional unit derived from the acid component and the constitutional unit derived from the alcohol component is not lower than 80 mass %. Relation of 2.3?Mw/Mn?4(10000?Mn?50000) is satisfied.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 26, 2015
    Applicant: KONICA MINOLTA, INC.
    Inventors: Naoki YOSHIE, Satoshi Matsumoto
  • Patent number: 8980518
    Abstract: The present disclosure provides for a liquid electrophotographic (LEP) ink comprising a carrier fluid, a pigment, a high melt viscosity ethylene acrylic acid copolymer resin, and a high acid ethylene acrylic acid copolymer resin. The high acid ethylene acrylic acid copolymer resin can have an acid content of at least 15 wt % and a viscosity of at least 8,000 poise. Additionally, the LEP ink can have a total resin acidity of at least 15 wt % and a total resin melt viscosity of at least 20,000 poise.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: March 17, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Stella Stolin Roditi, Haim Cohen, Neta Filip-Granit, Roi Liraz, Eyal Bodinger, Marc Klein, Nava Klein, Eyal Bachar, Swissa Shay, Albert Teishev, Yaron Grinwald, Fernanda Orlik, Ilanit Mor
  • Patent number: 8974996
    Abstract: A liquid developer used for wet-type image forming apparatuses includes toner particles and an insulating liquid, the toner particles include a resin, a pigment, and a pigment dispersant, the pigment includes a pigment having an acid group, and the pigment dispersant is a basic polymer dispersant including units derived from ?-caprolactone.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: March 10, 2015
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Naoki Yoshie, Kenji Hayashi, Chiaki Yamada, Keiko Momotani, Masahiro Anno, Yuya Kubo, Miyuki Hotta
  • Publication number: 20150037730
    Abstract: A liquid developer contains an electrically insulating liquid carrier and toner particles dispersed in the liquid carrier. Each toner particle includes a core and a shell layer that is formed on a surface of the core and contains a thermosetting resin.
    Type: Application
    Filed: July 25, 2014
    Publication date: February 5, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Hidetoshi MIYAMOTO, Katsuki OSANISHI, Yoshio OZAWA
  • Patent number: 8936896
    Abstract: The present disclosure provides for liquid electrophotographic inks having charge stabilizers and associated methods. In one example, a liquid electrophotographic ink can comprise a carrier liquid, a resin, a pigment, a negative charge director, and a charge stabilizer having a reduction potential of 0.16 v to 3.0 v.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: January 20, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gil Bar-Haim, Gregory Katz, Anatoly Sobolevsky, Ilanit Mor
  • Publication number: 20140370436
    Abstract: A liquid developer includes an insulating liquid and toner particles dispersed in the insulating liquid. The insulating liquid has a flash point not lower than 100° C. The toner particles contain a resin, and the resin contains 80 mass % or more of a first resin containing a component derived from a polyester resin. A solid content of the liquid developer corresponding to a portion of the liquid developer excluding the insulating liquid satisfies relation of G?(T0)/G?(T0+10)?10 (50° C.?T0?70° C.), where G?(T0) represents a storage elastic modulus at a temperature T0 (° C.) and G?(T0+10) represents a storage elastic modulus at a temperature (T0+10) (° C.).
    Type: Application
    Filed: June 17, 2014
    Publication date: December 18, 2014
    Inventors: Naoki YOSHIE, Masahiro Anno, Yukiko Uno, Masaaki Oka
  • Publication number: 20140314449
    Abstract: The present disclosure provides for a liquid electrophotographic (LEP) ink comprising a carrier fluid, a pigment, a high melt viscosity ethylene acrylic acid copolymer resin, and a high acid ethylene acrylic acid copolymer resin. The high acid ethylene acrylic acid copolymer resin can have an acid content of at least 15 wt % and a viscosity of at least 8,000 poise. Additionally, the LEP ink can have a total resin acidity of at least 15 wt % and a total resin melt viscosity of at least 20,000 poise.
    Type: Application
    Filed: January 31, 2011
    Publication date: October 23, 2014
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Stella Stolin Roditi, Haim Cohen, Neta Filip-Granit, Roi Liraz, Eyal Bodinger, Marc Klein, Nava Klein, Eyal Bachar, Swissa Shay, Albert Teishev, Yaron Grinwald, Fernanda Orlik, Ilanit Mor
  • Publication number: 20140295343
    Abstract: A liquid developer includes a toner in which a compound having a charge-accepting functional group has been bonded to a surface of toner particles, and a carrier liquid which makes a charge density of a surface of the toner become 1 ?C/m2 or less when the toner is dispersed in the carrier liquid.
    Type: Application
    Filed: August 13, 2013
    Publication date: October 2, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi TATSUURA, Keitaro MORI, Kazunari KOMATSUZAKI, Yutaka NOGAMI
  • Patent number: 8846286
    Abstract: In order to prevent the occurrence of bleeding in a nip between a photoreceptor and an intermediate transfer body or a nip between the photoreceptor and a sheet, which is a problem in a wet developing method, the present disclosure provides a liquid developer that includes an electrically insulating carrier liquid and colored particles dispersed within the carrier liquid, further contains an organic polymer compound, and has a viscosity of 30 to 400 mPa·s at a measurement temperature of 25° C.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: September 30, 2014
    Assignee: Kyocera Mita Corporation
    Inventors: Jumpei Hobo, Katsuki Osanishi
  • Publication number: 20140287357
    Abstract: The present disclosure provides for compositions, methods, and systems directed towards a liquid electrophotographic ink comprising a carrier fluid, a pigment, a first resin, and a stable cross-linkable resin that is solvated or swellable with the carrier fluid, where the stable cross-linkable resin does not undergo cross-linking until a temperature of at least 110° C. and, once cross-linked, does not melt until a temperature of at least 300° C.
    Type: Application
    Filed: October 25, 2011
    Publication date: September 25, 2014
    Inventors: Doris Chun, Hou T. Ng, Albert Teishev
  • Publication number: 20140186763
    Abstract: A liquid developer containing toner particles containing a resin and a pigment, and an insulating liquid, the toner particles being dispersed in the insulating liquid, wherein the insulating liquid contains an olefin having 12 carbon atoms or more and 18 carbon atoms or less in an amount of 10% by mass or more. The liquid developer of the present invention can be suitably used in developing latent images formed in, for example, an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: Kao Corporation
    Inventors: Tatsuya YAMADA, Shingo TAKADA
  • Patent number: 8765348
    Abstract: A liquid toner is disclosed herein. The liquid toner includes a toner composition with latex particles incorporated therein. The toner composition includes charged toner particles incorporated into a non-polar liquid carrier. The latex particles are polymer particles of acrylic monomers, vinylic monomers, or mixtures thereof, and each latex particle has a particle size ranging from about 20 nm to about 5 ?m.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: July 1, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Hou T. Ng, Albert Teishev
  • Patent number: 8741526
    Abstract: There is provided a developer that has excellent positive charging characteristics and charging stability, and which is compatible with high-speed developing. The developer of the invention contains toner particles and an insulating liquid, wherein a fatty acid ester is contained as the insulating liquid, a substance A expressed by the following formula (1) and/or a substance B expressed by the following formula (2) is further contained, and the total percentage in which substance A and substance B are contained is at least 0.1 wt % and no more than 3.0 wt %.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: June 3, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Teshima, Junichi Ishikawa
  • Publication number: 20140147171
    Abstract: Disclosed is an electrostatic ink composition, comprising a single charge director and a charge control agent that counters the build up of negative optical density memory on the intermediate transfer member of a printing apparatus using the electrostatic ink.
    Type: Application
    Filed: July 13, 2011
    Publication date: May 29, 2014
    Inventors: Ilanit Mor, Basile Verdene, Albert Teishev, Roi Liraz, Yaron Grinwald, Nava Klein, Emad Masoud
  • Publication number: 20140093822
    Abstract: This invention is related to a liquid developer dispersion for use in a digital printing apparatus comprising a non volatile carrier liquid, a marking particle and a dispersing compounds, wherein the marking particle in the liquid developer dispersion is stabilized during storage and wherein at fusing two phases are formed. The invention is also related to the use of the developer in a digital printing apparatus and to a method for preparing the liquid developer dispersion.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: Xeikon IP BV
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck, Mathias Jo Bert van Remortel, Dirk Marcel Constant Gijsbrechts
  • Patent number: 8685610
    Abstract: A printing method comprising: forming a first image utilizing a liquid toner comprising carrier liquid and pigmented polymer particles having a first color; transferring the first image to an intermediate transfer member; forming at least one additional image utilizing a liquid toner comprising at least one carrier liquid and pigmented polymer particles having a second color, different from the first color; transferring the at least one additional image to the intermediate transfer member overlaid on the first image, to form a composite image on the intermediate transfer member; and further transferring the composite image to a further substrate, wherein said polymer particles in said first liquid toner and in at least one of said additional liquid toners have different compositions, aside from colorants, the differences in composition including at least one of different polymers or blends of polymers, different amounts or types of placticizers, different amounts of solvated liquid and different compositions
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: April 1, 2014
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Galia Golodetz, Benzion Landa, Yosef Cohen, Ehud Chatow, Paul Fenster
  • Publication number: 20140087305
    Abstract: A liquid developer of the present invention includes a toner particle and an insulating liquid, the toner particle including a resin and a pigment, the resin including a polyester resin, the pigment including a first pigment, a second pigment, and a third pigment, the first pigment being a carbon black, 10 to 25 mass % of the first pigment being included in the toner particle, the second pigment being nigrosine, 3 to 15 mass % of the second pigment being included in the toner particle, the third pigment being at least one organic pigment selected from a group consisting of a phthalocyanine blue pigment, a phthalocyanine green pigment, a carmine-based pigment, a naphthol-based pigment, a quinacridon-based pigment, an azo-based pigment, a benzimidazolone-based pigment, and an isoindoline-based pigment, 5 to 20 mass % of the third pigment being included in the toner particle.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Chiaki YAMADA, MASAHIRO ANNO, YUKIKO UNO, SATOSHI MATSUMOTO
  • Patent number: 8679720
    Abstract: A liquid developer contains toner, a carrier liquid in which the toner are dispersed, and a graft copolymer of an acrylic polymer and a polysiloxane.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: March 25, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Kana Mitsuzawa, Masahiro Oki
  • Publication number: 20140072911
    Abstract: A toner, wherein the toner is obtained by washing a toner particle dispersion liquid which is obtained by adding cellulase to a dispersion slurry, and the dispersion slurry is obtained from a dispersion liquid or an emulsion of a toner material-containing oil phase in an aqueous medium, and wherein the dispersion liquid or the emulsion contains a cellulosic dispersion stabilizing agent.
    Type: Application
    Filed: June 26, 2013
    Publication date: March 13, 2014
    Inventors: Yousuke SUZUKI, Sayaka Yuasa, Sayuri Kojima, Takahiro Kadota, Yasuaki Iwamoto