Identified Toner, I.e., Identified Resin Coated Pigment, Etc. Patents (Class 430/114)
  • Patent number: 10591838
    Abstract: Disclosed herein is an electrostatic ink composition. The composition may comprise a carrier liquid, which has suspended therein: thermochromic pigment particles having a layer of thermoplastic resin thereon. Method for forming electrostatic ink composition and a substrate having the electrostatic ink composition printed thereon are also disclosed herein.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: March 17, 2020
    Assignee: HP Indigo B.V.
    Inventors: Olga Kagan, Danny Feldman, Rada Nuchimov, Yaron Grinwald, Shiran Zabar, Gleb Romantcov
  • Patent number: 10564563
    Abstract: Described herein is a liquid electrostatic ink composition. The composition may comprise: a. a carrier liquid; and b. chargeable particles suspended in the carrier liquid, wherein the chargeable particles comprise a thermoplastic resin formed from the reaction of a first resin and a second resin, wherein i. the first resin comprises a polymer having acidic side groups; and ii. the second resin comprises an epoxy resin component and an elastomeric component, wherein the epoxy resin component has one or more epoxide groups per molecule.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: February 18, 2020
    Assignee: HP Indigo B.V.
    Inventors: Albert Teishev, Hanit Marom Tchaicheeyan, Igor Shutyi
  • Patent number: 10545424
    Abstract: A liquid developer comprising a carrier liquid, a toner particle insoluble in the carrier liquid, and a polymer having a primary amino group and soluble in the carrier liquid, wherein the toner particle comprises a polyester resin having an acidic group, an acid value of the polyester resin is at least 5 mg KOH/g, a pKa of the acidic group is not more than 3.4, and the polymer having a primary amino group has a primary amino group at a position other than the end of a main chain of the polymer, and method of producing thereof.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Waka Hasegawa, Ryo Natori, Ayano Mashida, Junji Ito, Yasuhiro Aichi, Jun Shirakawa
  • Patent number: 10451991
    Abstract: An image forming apparatus includes an image forming portion configured to form an image with a liquid developer containing a toner and a carrier liquid, a separating device configured to separate the toner and the carrier liquid from the liquid developer collected at the image forming portion, a first carrier supplying device supplies a first carrier liquid separated by the separating device, and a second carrier supplying device including a second carrier container to accommodate a second carrier liquid in which a ratio of the first substance to the second substance is smaller than that in the first carrier liquid separated by the separating device or no first substance is contained. An accommodating portion accommodates the liquid developer including the first carrier liquid, the second carrier liquid, and the toner, wherein the liquid developer accommodated in the accommodating portion is supplied to the image forming portion.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 22, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Teppei Nagata, Toru Kabashima
  • Patent number: 10423084
    Abstract: A method for producing a liquid developer, the method including a step of producing a toner particle by applying a shear force to a mixture of a polyester resin A and B, and a toner particle dispersing agent in a liquid a, wherein the polyester resin A has a number-average molecular weight from 3,000 to 7,000, an acid value of at least 5, and a carboxy group; the polyester resin B has a number-average molecular weight from 4,000 to 20,000 and an acid value of not more than 2; the toner particle dispersing agent has a primary amino group and an amine value of at least 40; the mass ratio (B/(A+B)) for the polyester resin B is 0.3 to 0.9; and the following relationship is satisfied: SP value of liquid a<SP value of the toner particle dispersing agent<SP value of polyester resin B.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: September 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Aichi, Junji Ito, Jun Shirakawa, Waka Hasegawa, Ryo Natori, Ayano Mashida
  • Patent number: 10416583
    Abstract: The present disclosure is drawn to an electrostatic ink composition comprising a resin having a Mw of 10,000 or less and a conductive species. Also disclosed herein is a substrate on which is electrostatically printed a conductive trace, wherein the trace comprises a resin having a Mw of 10,000 or less and a conductive species. Further disclosed herein is a method of electrophotographic printing an electrostatic ink composition comprising a resin having a Mw of 10,000 or less and a conductive species.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: September 17, 2019
    Assignee: HP Indigo B.V.
    Inventors: Gregory Katz, Yaron Grinwald, Michael Kokotov, Regina Guslitzer
  • Patent number: 10416585
    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: December 6, 2017
    Date of Patent: September 17, 2019
    Assignee: HP Indigo B.V.
    Inventors: Gil Bar-Haim, Alina Grishman
  • Patent number: 10394153
    Abstract: Provided in one example herein is a liquid electrophotographic ink composition. The composition comprises: a carrier fluid comprising a polymer; ink particles each comprising a non-aqueous polymeric resin and pigment particles distributed in the polymeric resin; and a charge director. The pigment particles comprise a metal oxide and have a hydrophobic surface. The hydrophobic surface comprises at least one of the following: (i) nanoparticles attached to each of the pigment particles, the nanoparticles comprising at least one of an oxide, a phosphate, and a nitrate; (ii) a coating disposed over each of the pigment particles, the coating comprising at least one of an oxide, a phosphate, and a nitrate; and (iii) a coating disposed over each of the pigment particles, the coating comprising at least one of a polymer and an oligomer.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 27, 2019
    Assignee: HP Indigo B.V.
    Inventors: Emad Masoud, Neta Filip-Granit, Vladislav Kaploun, Olga Kagan, Yelena Litichevski, Albert Teishev
  • Patent number: 10344175
    Abstract: Herein is disclosed an electrostatic ink composition. In some examples, the electrostatic ink compositions comprise: a carrier liquid; a first resin; and a fluorescent pigment. The fluorescent pigment comprising a fluorescent dye and a second resin matrix, wherein the second resin is selected from the group comprising polyamide resins, polyvinylchlorides, polyolefin resins, polystyrenes, acrylonitrile-butadiene-styrene resins, polycarbonates, poly acrylic and methacrylic acid resins, polyethylene terephthalates, polyamide resins, polyurethanes, epoxy resins, silicone resins, polyester resins, alkyd resins, acrylonitrile polymers, polyesteramides or combinations thereof.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: July 9, 2019
    Assignee: HP Indigo B.V.
    Inventors: Biana Noikas, Dror Kella, Adi Vinegrad, Regina Guslitzer, Yaron Grinwald, Gil Bar-Haim, Tehila Ben-Ezra, Avishai Moshel, Emad Masoud, Yelena Litichevski, Roi Liraz, Noam Parvin
  • Patent number: 10197935
    Abstract: A liquid electrophotographic composition is described, which comprises a carrier liquid, a polymer resin comprising a copolymer of an alkylene monomer and a monomer selected from acrylic acid and methacrylic acid, and at least 5 wt. % of an optical brightening agent based on the total solids content of the composition.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: February 5, 2019
    Assignee: HP Indigo B.V.
    Inventors: Inna Tzomik, Hannoch Ron, Daniel Skvirsky, Einat Glick
  • Patent number: 10180635
    Abstract: A liquid developer is characterized in that it includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the pigment includes a first pigment and a second pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, and 20 to 60% by mass of the pigment is included relative to the toner particles.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: January 15, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Chiaki Yamada, Masahiro Anno, Sho Kim, Yukiko Uno
  • Patent number: 10139742
    Abstract: An electrophotographic varnish composition that comprises, in a liquid carrier, a polymeric resin; an epoxy-based cross-linking agent, a mono-epoxy diluent and a metal catalyst and/or a photo-initiator. Also described herein is a method for making such electrophotographic varnish composition.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: November 27, 2018
    Assignee: HP Indigo B.V.
    Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Guy Nesher, Getahun Biadglin, Haim Cohen, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
  • Patent number: 10040297
    Abstract: Herein is disclosed a method of printing comprising the steps of: (a) applying an ink comprising a thermoplastic resin to a print substrate using an electrostatic printing process; and (b) applying an overcoat composition comprising a crosslinking agent to the ink on the print substrate, such that the thermoplastic resin of the ink is crosslinked. Print substrates and printing systems are also disclosed.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: August 7, 2018
    Assignee: HP Indigo B.V.
    Inventors: Ilanit Mor, Yaacov Almog, Albert Teishev, Tony Azzam, Julia Kornilov
  • Patent number: 10042276
    Abstract: Herein is disclosed an electrostatic ink composition, wherein the composition is formable by combining: chargeable particles comprising a resin, a charge director comprising a sulfosuccinate salt, and a non-polymeric, non-fatty acid having a pKa, when measured in water at 20° C., of at least 1. Also disclosed herein is a method of forming an electrostatic ink composition, and a method of electrostatic printing.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: August 7, 2018
    Assignee: HP Indigo B.V.
    Inventors: Gil Bar-Haim, Alina Grishman, Ilanit Mor, Albert Teishev
  • Patent number: 10007207
    Abstract: A liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles having such a core-shell structure that shell particles containing a shell resin are attached to or cover surfaces of core particles containing a core resin, the core resin having an acid group and an acid dissociation constant not smaller than 2.90 and not greater than 8.00, and a method for manufacturing the same are provided. The toner particles can have a volume average particle size not smaller than 0.01 ?m and not greater than 100 ?m and a coefficient of variation of volume distribution not lower than 1% and not higher than 100%. This liquid developer has excellent fixability which allows adaptation to various recording materials, can be fixed in a wide temperature range, and is extremely low in deterioration in fixability during storage.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: June 26, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yukiko Uno, Satoshi Matsumoto, Naoki Yoshie, Miyuki Hotta
  • Patent number: 9897936
    Abstract: A curable liquid developer production method that can efficiently produce a curable liquid developer is provided. A curable liquid developer is also provided. The method is a method of producing a curable liquid developer containing a pigment, a binder resin, a toner particle dispersing agent, and a curable insulating liquid, this method including: a pigment dispersion step of preparing a pigment dispersion containing a pigment, a binder resin, a toner particle dispersing agent, and a solvent; a mixing step of mixing the pigment dispersion with a curable insulating liquid; and a distillative removal step of distillatively removing the solvent from a mixture obtained in the mixing step.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Natori, Waka Hasegawa, Ayano Mashida, Junji Ito, Yasuhiro Aichi, Jun Shirakawa
  • Patent number: 9857717
    Abstract: Herein is disclosed a liquid electro photographic (LEP) printing composition comprising: a first resin component comprising an ethylene acrylic acid resin, an ethylene methacrylic acid resin or combinations thereof; and a second resin component present in an amount of about 20% to about 80% by weight of total solids content of the composition, the second resin component having a melting point of from about 50° C. to about 75° C., which is below the melting point of the first resin component, or from about 140° C. to about 180° C., which is above the melting point of the first resin component.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: January 2, 2018
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Hannoch Ron, Inna Tzomik, Shani Maor, Merav Shapira
  • Patent number: 9857715
    Abstract: Liquid electrophotographic compositions, methods of manufacturing liquid electrophotographic compositions, methods of printing using liquid electrophotographic compositions and printed articles are disclosed.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: January 2, 2018
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Hannoch Ron, Inna Tzomik
  • Patent number: 9856369
    Abstract: The present invention relates to a composition comprising an aqueous dispersion of spheroidal particles having a mode particle size of from 10 to 30 ?m. The spheroidal particles are useful as organic extenders, especially in below-critical pigmented coatings formulations, and provide coatings with improved stain removal properties.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: January 2, 2018
    Assignees: Rohm and Haas Company, Dow Global Technologies LLC
    Inventors: Richard A. Lundgard, Partha S. Majumdar, David L. Malotky, Jodi M. Mecca, Edwin Nungesser
  • Patent number: 9857716
    Abstract: A curable liquid developer containing a curable insulating liquid and a toner particle that contains a pigment and a resin, wherein the viscosity of the curable insulating liquid at 25° C. is at least 1 mPa·s and not more than 100 mPa·s, and when A (mPa·s) is the viscosity of the curable liquid developer at 25° C. in a case where the toner particle concentration in the curable liquid developer is 50 mass %, and B (mPa·s) is the viscosity of the curable liquid developer at 25° C. in a case where the toner particle concentration in the curable liquid developer is 1 mass %, the value of A?B is not more than 1,000 mPa·s.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 2, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryo Natori, Waka Hasegawa, Ayano Mashida, Junji Ito, Yasuhiro Aichi, Jun Shirakawa
  • Patent number: 9840626
    Abstract: An aqueous ink composition including water; an optional co-solvent; an optional colorant; and a composite nanoparticle comprising a core and a shell; wherein the core comprises a styrene/acrylate polymer core resin, optionally comprising a metal; and wherein the shell comprises a metal. An aqueous ink composition including water; an optional co-solvent; an optional colorant; and an ionic polymer-metal composite; wherein the ionic-polymer metal composite nanoparticle acts as a reservoir for the delivery of metal ions for anti-bacterial effect, antifungal effect, antiviral biocide effect, or a combination thereof.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 12, 2017
    Assignee: Xerox Corporation
    Inventors: Valerie M. Farrugia, Wendy Chi
  • Patent number: 9753389
    Abstract: A liquid developer contains an insulating liquid and toner particles dispersed in the insulating liquid. The toner particles have a resin and a coloring agent. The resin contains at least 10 mass % and at most 40 mass % of an aliphatic polyester resin and at least 60 mass % and at most 90 mass % of an aromatic polyester resin. The resin has an acid value not less than 20 mgKOH/g and not more than 100 mgKOH/g. A difference in acid value between the aliphatic polyester resin and the aromatic polyester resin is not less than 0 mgKOH/g and not more than 10 mgKOH/g.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: September 5, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Keiko Momotani, Masahiro Anno, Naoki Yoshie
  • Patent number: 9745488
    Abstract: The application relates to a method of producing an electrostatic ink composition, the method comprising: mixing a resin and a conductive pigment in a continuous mixer to form a compounded mixture comprising particles comprising the resin and the pigment; adding a liquid carrier to the compounded mixture, such that the particles comprising the resin and the conductive pigment are dispersed in the liquid carrier; and, before, during or after adding the liquid carrier to the compounded mixture: imparting a charge on the particles comprising the resin and the pigment.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 29, 2017
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Adi Vinegrad, Ruslan Tovberg, Eyal Negreanu, Olga Kagan, Yaron Grinwald, Reut Avigdor
  • Patent number: 9735102
    Abstract: Devices and methods of forming a device are disclosed. The method includes providing a wafer that includes a center insulator layer sandwiched by a top substrate and a bottom substrate. Both sides of the wafer are patterned and etched in sequence to form deep trenches in both substrates. A conductive seed layer is formed on both sides of the wafer in sequence to cover all exposed areas. Both sides of the wafer are electroplated simultaneously to fill both deep trenches with a conductive material. Both sides of the wafer are polished in sequence to form a coplanar surface. A protective layer is deposited on both sides of the wafer in sequence. Selective portions of the protective layer on both sides are patterned and etched in sequence to expose micro bump bonding areas. Micro bumps are formed on both sides of the wafer in sequence to facilitate electrical connection.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: August 15, 2017
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Lulu Peng, Donald Ray Disney
  • Patent number: 9714358
    Abstract: A colorless varnish for digital printing includes a colorless paste, which is made up of anon-polar carrier fluid and a resin swollen in the non-polar carrier fluid. The resin is present in the paste in an amount ranging from about 20% (w/w) to about 50% (w/w). A solid polar compound is dispersed in the resin. The solid polar compound is present in an amount up to 60 wt. % of solids in the colorless paste.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: July 25, 2017
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Hannoch Ron, Inna Tzomik, Daniel Skvirsky
  • Patent number: 9709915
    Abstract: Herein is disclosed an electrostatic ink composition comprising: a) chargeable particles comprising a resin; b) a charge director comprising a sulfosuccinate salt of the general formula M?Am, wherein M? is a metal, m is the valence of M?, and A is an ion of the general formula (I): (I) [R3—O—C(O)CH2CH(SO3)C(O)—O—R4]? wherein each of R3 and R4 is an alkyl group; and c) an optionally substituted naphthalene-sulfonate moiety. Also disclosed is a method of manufacturing an electrostatic ink composition and a printed medium having printed thereon an electrostatic ink composition.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: July 18, 2017
    Assignee: Hewlett-Parkard Indigo B.V.
    Inventors: Emad Masoud, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
  • Patent number: 9703224
    Abstract: A liquid developer contains an insulating liquid and toner particles dispersed in the insulating liquid. The toner particles have a resin and a coloring agent. The resin contains at least 5 mass % and at most 30 mass % of an aliphatic polyester resin and at least 70 mass % and at most 95 mass % of an aromatic polyester resin. A difference in acid value between the aliphatic polyester resin and the aromatic polyester resin is not less than 15 mgKOH/g and not more than 100 mgKOH/g.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 11, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Naoki Yoshie
  • Patent number: 9547248
    Abstract: A method of manufacturing a liquid electrophotographic ink includes: mixing a pigment with a resin powder; and microfluidizing the mixture together with a carrier fluid in a microfluidizer in a number of passes to form a concentrated ink containing composite particles.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: January 17, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Hou T Ng, Albert Teishev
  • Patent number: 9523938
    Abstract: An embodiment of the present invention relates to a polymeric dispersant for a liquid developer, which is obtained by copolymerizing at least an ethylenically unsaturated monomer having an amino group, an ethylenically unsaturated monomer having an alkyl group with a carbon number of 9 to 24, and an ethylenically unsaturated monomer represented by general formula (1) shown below: CH2?C(R1)COO(AO)nR2??General formula (1) wherein, R1 represents H or CH3, R2 represents a hydrogen atom or a hydrocarbon group having a carbon number of 1 to 22, n represents an integer of 1 to 200, and A represents an alkylene group having a carbon number of 2 to 4.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: December 20, 2016
    Assignees: TOYO INK SC HOLDINGS CO., LTD., TOYO INK CO., LTD.
    Inventors: Yuji Soneta, Kazumasa Hattori
  • Patent number: 9459549
    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: Grant
    Filed: August 13, 2013
    Date of Patent: October 4, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoshi Tatsuura, Keitaro Mori, Kazunari Komatsuzaki, Yutaka Nogami
  • Patent number: 9395641
    Abstract: A liquid developer includes an insulating liquid and toner particles which are dispersed in the insulating liquid and contain a resin and a coloring agent. The resin contains a first resin which is a resin containing a component derived from a crystalline polyester resin. The coloring agent contains carbon black and nigrosine. The toner particles have a peak at not lower than 30° C. and not higher than 50° C. in a DSC curve in temperature decrease.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 19, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Chiaki Yamada, Masahiro Anno, Yuya Iwagoe, Masaaki Oka
  • Patent number: 9389530
    Abstract: A liquid developer includes an insulating liquid and toner particles which are dispersed in the insulating liquid and contain a resin and a coloring agent. The resin contains a first resin which is a crystalline 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. The toner particles have a peak in a DSC curve in temperature increase at 55° C. or higher, have a peak in the DSC curve in temperature decrease at 30° C. or higher, and have a storage elastic modulus at 80° C., not lower than 1×105 Pa and not higher than 1×107 Pa.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 12, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Chiaki Yamada, Mikihiko Sukeno, Yuya Iwagoe, Masaaki Oka
  • Patent number: 9346752
    Abstract: Embodiment of the present disclosure can include a compound, a structure bonded to the compound, and the like. In an embodiment, the compound can be a linker between an agent and a structure, where the agent can be a dye or a pigment and the structure can be a fiber, hair, or another structure.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: May 24, 2016
    Assignee: University of Georgia Research Foundation, Inc.
    Inventor: Jason J. Locklin
  • Patent number: 9296901
    Abstract: Composite particles of the present invention comprise white inorganic particles, a surface modifier coating layer formed on surface of the respective white inorganic particles, and a dye or lake coat adhered onto the surface of the respective surface-modifier-coated white inorganic particles. The composite particles of the present invention not only exhibit excellent color-developing property and tinting strength but also suppress bleeding.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: March 29, 2016
    Assignee: TODA KOGYO CORPORATION
    Inventors: Hiroko Morii, Kazuyuki Hayashi, Keisuke Iwasaki
  • Patent number: 9239533
    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: Grant
    Filed: July 13, 2011
    Date of Patent: January 19, 2016
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Ilanit Mor, Basile Verdene, Albert Teishev, Roi Liraz, Yaron Grinwald, Nava Klein, Emad Masoud
  • Patent number: 9170515
    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: Grant
    Filed: September 27, 2013
    Date of Patent: October 27, 2015
    Assignee: 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: 9157002
    Abstract: A process for preparing a pigment dispersion including melting a phase change ink carrier and an optional dispersant at a temperature of from about 100° C. to about 170° C. in a jacketed vessel comprising a jacket surrounding an immersion mill or basket mill attachment and a dispersion blade attachment disposed within the jacketed vessel; mixing the melted phase change ink carrier and optional dispersant with a dispersion blade in the jacketed vessel; adding a pigment to the melted, mixed phase change ink carrier and optional dispersant in the jacketed vessel; wetting the pigment; after pigment wetting, reducing the pigment particle size using an immersion mill or basket mill attachment in the jacketed vessel; and discharging the pigment dispersion.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: October 13, 2015
    Assignee: Xerox Corporation
    Inventors: Karina Lopez, Enno Eric Agur, Santiago Faucher, Frank Ping-Hay Lee, Aurelian Valeriu Magdalinis, Biby Esther Abraham, Daniel Lafontaine, Jonathan Lisk
  • Patent number: 9152068
    Abstract: In a liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles 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 particles further contain a pigment and a dispersant for pigment, and solubility of the dispersant for pigment in the insulating liquid is not higher than 10 mass % at 25° C.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 6, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Sho Kim, Satoshi Matsumoto, Naoki Yoshie, Kenji Hayashi
  • Patent number: 9146488
    Abstract: A liquid developer includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the resin includes a crystalline resin, the pigment includes a first pigment, a second pigment, and a third pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, the third pigment is nigrosine, and 20 to 60% by mass of the pigment is included relative to the toner particles.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: September 29, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Chiaki Yamada, Masahiro Anno, Sho Kim, Yukiko Uno
  • Patent number: 9069276
    Abstract: A liquid developer is obtained by dispersing toner particles containing at least a resin and a coloring agent in an insulating liquid. The toner particles 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 coloring agent contains nigrosine. A content of nigrosine in the toner particles is not lower than 1 mass % and not higher than 20 mass %. The second resin satisfies Equations (1) to (2) below. In Equations (1) to (2), 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 24, 2013
    Date of Patent: June 30, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenji Hayashi, Masahiro Anno, Yukiko Uno, Satoshi Matsumoto
  • Patent number: 9046802
    Abstract: A novel liquid toner development system is disclosed. The liquid development system includes conductive core-shell particles comprising silver-copper or copper-silver. A novel apparatus and method relying on the novel liquid toner development system results in electro-conductive patterning capable of high conductivity with low background fogging, reduced processing time and reduced environmental impact.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: June 2, 2015
    Assignee: AFIT Corporation
    Inventors: Ichiro Yoshida, Shuji Iino
  • Publication number: 20150147692
    Abstract: A liquid developer includes a carrier liquid having silicone oil, and toner particles including a polyester resin and having a value of ammonium ions contained therein measured by underwater extraction in a range of 0.005 ppm to 1 ppm.
    Type: Application
    Filed: May 27, 2014
    Publication date: May 28, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takako KOBAYASHI, Daisuke YOSHINO, Akira IMAI, Koji HORIBA, Masahiro OKI, Hiroyuki MORIYA, Yoshihiro INABA
  • Patent number: 9023571
    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: Grant
    Filed: September 25, 2013
    Date of Patent: May 5, 2015
    Assignee: Konica Minolta, Inc.
    Inventors: Chiaki Yamada, Masahiro Anno, Yukiko Uno, Satoshi Matsumoto
  • 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
  • Publication number: 20150093700
    Abstract: A liquid developer set of the present invention includes a first liquid developer including an insulating liquid and first toner particles and a second liquid developer including an insulating liquid and second toner particles, the first toner particles include carbon black and a first resin, the second toner particles include a coloring agent other than carbon black and a second resin, without including carbon black, the first resin and the second resin each include a hydrocarbon long chain which is a hydrocarbon group having a carbon number of 8 to 30, and a mass ratio of the hydrocarbon long chain to the first toner particles is higher than a mass ratio of the hydrocarbon long chain to the second toner particles.
    Type: Application
    Filed: September 22, 2014
    Publication date: April 2, 2015
    Applicant: Konica Minolta, Inc.
    Inventors: Keiko MOMOTANI, Naoki YOSHIE, Yukiko UNO, Masaaki OKA
  • Publication number: 20150086919
    Abstract: A resin in a liquid developer contains 80 mass % or more of a urethane-modified polyester resin. A component derived from a polyester resin contains 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 90 mass %. Relation of |Tm1?Tm5|?20° C. (70° C.?Tm1?170° C., 60° C.?Tm5?120° C.) is satisfied, where Tm1 (° C.) represents a softening temperature T1/2 of toner particles measured with a flow tester under a load of 1 kg and Tm5 (° C.) represents a softening temperature T1/2 of toner particles measured with a flow tester under a load of 5 kg.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 26, 2015
    Applicant: Konica Minolta, Inc.
    Inventors: Naoki YOSHIE, Keiichiro HIGASHI
  • Patent number: 8974997
    Abstract: The present disclosure is drawn to LEP toners, systems, and methods of manufacturing LEP liquid toners. Specifically, a high NVS liquid toner can comprise a ground up admixture of a hydrocarbon carrier fluid, pigment particles, and a polymer paste having an NVS content of about 38 wt % to about 65 wt %. The resultant high NVS liquid toner has an NVS content of about 28 wt % to about 38 wt % and a viscosity of about 3,000 cPs to about 25,000 cPs.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: March 10, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eyal Bachar, Swissa Shay, Yaron Grinwald, Merav Shapira, Albert Teishev, Nava Klein
  • 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
  • Patent number: 8940469
    Abstract: A liquid developer for electrography, comprising toner particles dispersed in a liquid carrier, wherein the toner particles include a pigment, a thermoplastic resin, and an organic filler, which organic filler is reactive with groups of the thermoplastic resin and incompatible with the liquid carrier.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: January 27, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Albert Teishev, Stalla Stolin Rodith, Michael Shishkin
  • Patent number: 8932791
    Abstract: A liquid electrophotographic ink is disclosed herein. One example of the liquid electrophotographic ink includes a non-polar carrier liquid; pigmented toner particles; a charge director; and polymer resin encapsulated metal oxide nanoparticles. A method for making the liquid electrophotographic ink is also disclosed herein.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: January 13, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Doris Pik-Yiu Chun, Hou T. Ng, Albert Teishev