Patents Examined by Veronica F. Faison
  • Inkjet recording ink set, inkjet recording method, and recorded matter
    Patent number: 9034091
    Abstract: An inkjet recording ink set including a black ink and color inks, wherein the black ink and the color inks each contain at least a dye, a water-soluble solvent and water and each have a viscosity of 5 mPa-s to 20 mPa-s at 25° C., and wherein the respective color inks each satisfy a mass ratio relationship of S/W?1, and the black ink satisfies a mass ratio relationship of S/W<1, where S denotes an amount of the water-soluble solvent contained in the respective inks, and W denotes an amount of the water contained in the respective inks.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 19, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihiko Matsuyama, Kiyofumi Nagai
  • Wetness indicating ink compositions
    Patent number: 9034090
    Abstract: A method of printing on a hygienic article includes applying droplets of an ink composition with an ink jet printer to a surface of a hygienic article to form a desired image. The ink composition includes an organic solvent, a water-soluble binder resin including hydroxypropylcellulose, and a water-soluble dye. The image acts as a wetness indicator by dissolving in an aqueous fluid.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: May 19, 2015
    Assignee: Videojet Technologies Inc.
    Inventors: Michael Kozee, Linfang Zhu
  • Inks for inkjet printers
    Patent number: 9034088
    Abstract: Method for decorating green or fired ceramic bodies by inkjet printing comprising the use of a ceramic inkjet ink which is prepared by milling a ceramic inorganic pigment in an organic medium in the presence of a dispersant which is the reaction product of a polyethyleneimine and a ricinoleic acid polyester, until the average particle size of the pigment is between 0.1 and 0.8 ?m.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: May 19, 2015
    Assignee: LAMBERTI SPA
    Inventors: Dario Fornara, Alan Nappa, Tamara Verzotti, Paolo Prampolini, Stefano Crespi, Giovanni Floridi, Giuseppe Li Bassi
  • Ink composition and printed matter
    Patent number: 9028601
    Abstract: An ink composition of the invention is an ink composition to be ejected by an ink jet system and includes silver particles and water. When a composition A formed of components of the ink composition other than the water is held in an atmosphere at an ambient temperature of 23° C. and a relative humidity (RH) of 50%, the equilibrium moisture content of the component A is in a range of 2 to 7.8 percent by mass.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 12, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Atsushi Denda, Shiki Hirata, Tsuyoshi Sano
  • Ink jet ink set and ink jet recording system
    Patent number: 9023140
    Abstract: An ink jet ink set, at least has a cyan ink, a magenta ink, and a yellow ink, in which the cyan ink contains at least either one of C.I. Acid Blue 9 or C.I. Direct Blue 199, the magenta ink contains at least either one of C.I. Acid Red 249 or C.I. Reactive Red 141, the yellow ink contains at least either one of C.I. Direct Yellow 86 or C.I. Direct Yellow 132, and the cyan ink, the magenta ink, and the yellow ink all contain an alkylene oxide adduct of acetylene glycol having 12 or more carbon atoms in the main chain, acetylene glycol having 10 or more carbon atoms in the main chain, and polyoxy alkylene alkyl ether.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 5, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hiromi Iseki, Chie Maruyama, Kiyohiko Takemoto, Tomohiro Aruga
  • Method of preparing aqueous pigment dispersions
    Patent number: 9023141
    Abstract: A process for preparing an aqueous pigment dispersion is provided in which a pigment, a coating agent, a grinding agent and a vehicle are subjected to grinding, followed by removal of the grinding agent and the vehicle to form a press cake, and dispersing the press cake to form a pigment dispersion. Also disclosed is an ink-jet ink containing an aqueous vehicle and the aqueous pigment dispersion thus made.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 5, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: James A. Silver, C. Chad Roberts
  • Erasable inkjet ink composition
    Patent number: 9017466
    Abstract: An erasable inkjet ink composition includes an ink vehicle including a solvent, and a colorant added to the ink vehicle. The colorant is chosen from an iron-based ionic complex, an iron-based ionic complex in combination with a dye, a non-ascorbic acid based complex, and a dye-blend mono-based colorant.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: April 28, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Raymond Adamic, Larrie Alan Deardurff
  • Colorant dispersion for an ink
    Patent number: 9017468
    Abstract: A colorant dispersion for an ink includes a liquid medium and metal oxide particles dispersed in the liquid medium. The metal oxide particles include a mixture of i) metal oxide particle cores having an organic ligand interacted with respective surfaces thereof, ii) metal oxide particle cores having the organic ligand chemically bonded to respective surfaces thereof, and iii) products of a reaction between metal ions on respective surfaces of metal oxide particle cores and the organic ligand. The organic ligand is chosen from an organic ligand having a phenol group, an organic ligand having a carboxylate group, an organic ligand having an amine group, or combinations thereof. The metal oxide particles exhibit a color that is different from a natural color of the metal oxide particle core.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 28, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Raymond Adamic, Vladek Kasperchik, Vladimir Jakubek
  • Ink set and image forming method
    Patent number: 9011590
    Abstract: An ink set is provided in which an image with suppressed roughness may be formed. The ink set includes an ink composition containing resin particles and a pigment, and a process liquid containing an organic acidic compound including a compound represented by General Formula (I). CnH2n+2?m(COOH)m??General Formula (I) [wherein, in General Formula (I), n represents an integer of greater than or equal to 2 and m represents an integer of greater than or equal to 3.].
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: April 21, 2015
    Assignee: Fujifilm Corporation
    Inventors: Takuya Arai, Ryo Saito, Akira Takeda
  • Phase change inks comprising novel crystalline compounds
    Patent number: 9011587
    Abstract: A phase change ink composition suitable for ink jet printing, including robust printing on coated paper substrates. In embodiments, the phase change ink composition comprises both a crystalline compound and an amorphous compound which are derived from bio-renewable materials. In particular, the present embodiments provide novel crystalline compounds with at least two aromatic moieties for use in the phase change inks.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: April 21, 2015
    Assignee: Xerox Corporation
    Inventors: Adela Goredema, Guerino G. Sacripante, Barkev Keoshkerian, Daryl W. Vanbesien, Kentaro Morimitsu, Naveen Chopra, Gabriel Iftime
  • Ink set and recording method using the same
    Patent number: 8999051
    Abstract: An ink set includes a first ink containing a fatty acid and a self-dispersing pigment, and at least either a second ink containing a resin-dispersed pigment and substantially no fatty acid or a third ink containing a self-dispersing pigment and substantially no fatty acid.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: April 7, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Soichi Yamazaki
  • W/O emulsion ink for inkjet
    Patent number: 8999049
    Abstract: A water-in-oil (W/O) emulsion ink which is suitable for use in inkjet printing and is superior in ejection performance and storage stability and low in viscosity is provided. A water-in-oil (W/O) emulsion ink which comprises a polyglycerin with a polymerization degree of not less than 3 in a water phase is provided. As an emulsifier, a polyglycerin fatty acid ester with an HLB value of 7-14 in which fatty acid moiety is oleic acid or isostearic acid, or a polyoxyethylene sorbit fatty acid ester is preferably used. The concentration of the polyglycerin in the water phase is preferably 10-70 mass % relative to 100 mass % of the whole water phase. The polymerization degree of the polyglycerin is preferably not less than 4.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: April 7, 2015
    Assignee: Riso Kagaku Corporation
    Inventors: Naofumi Ezaki, Kazuyuki Ando, Shinichiro Shimura
  • Ink composition, ink jet recording apparatus, and recorded article
    Patent number: 8992675
    Abstract: An ink composition contains a coloring material, 1,2-pentanediol with a content in the range of more than 0% by mass to less than 20% by mass, and 1,2-hexanediol.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: March 31, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Hidehiko Komatsu
  • Ink set and ink jet recording method
    Patent number: 8992676
    Abstract: An ink set for an aqueous ink jet includes a first ink and a second ink, in which the first ink satisfies requirement 1 and requirement 2 described below: requirement 1: the first ink contains a coloring material, a fluorinated surfactant, and a specific salt, and requirement 2: the difference between the dynamic surface tensions of the first ink at lifetimes of 50 msec and 5000 msec measured by a maximum bubble pressure method at 25° C. is 17 mN/m or more, and the dynamic surface tension of the first ink at a lifetime of 5000 msec is 32 mN/m or less.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Yamashita, Shin-ichi Hakamada
  • Ink for inkjet recording, ink cartridge and inkjet recording apparatus
    Patent number: 8979989
    Abstract: An ink for inkjet recording including a pigment, a penetrating agent and water, wherein the pigment includes: an ozone-oxidized carbon black, including carbon black oxidized by ozone and having a volatile matter content of the carbon black of 10% by mass to 20% by mass and a BET specific surface area of 90 m2/g to 150 m2/g; and a resin-coated carbon black, including: carbon black; and a resin present on a surface of the carbon black.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: March 17, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Minoru Hakiri, Mitsuru Naruse, Masayasu Nonogaki
  • Ink set and inkjet recording method
    Patent number: 8956451
    Abstract: An ink set, used in an inkjet recording apparatus equipped with a recording head including: a plurality of nozzle arrays, each including a plurality of nozzles; and a sucking-and-covering unit for covering the recording head, wherein the black ink is supplied to one of the plurality of the nozzle arrays of the recording head, and the color ink is supplied to the other plurality of the nozzle arrays of the recording head, wherein the black ink includes resin-coated carbon-black particles, surfactant-treated carbon-black particles and water, wherein the color ink includes resin-coated color-pigment particles, surfactant-treated color-pigment particles and water, and wherein the ink set satisfies Expression (1), Expression (2) and Expression (3) below: 5.0% by mass?P(Bk)?12.0% by mass??Expression (1) 3.0% by mass?P(CL)?10.0% by mass??Expression (2) [R(CL)/S(CL)]<[R(Bk)/S(Bk)]??Expression (3).
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: February 17, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Keita Katoh, Masaki Kudo, Tomohiro Nakagawa, Akihiko Gotoh
  • Formulation for silicon-doped ink used to prevent chip etching
    Patent number: 8956450
    Abstract: An ink composition for used in an inkjet printer is provided. The ink composition includes a carrier medium, a colorant, and a silicon doping agent. The silicon doping agent may include silicic acid, silicon dioxide, or silicates. This silicon-doped ink reduces and prevents the etching of the silicon based components of the printhead. Silicon-doped inks protect the printhead from damage, thus improving printhead reliability and increasing printhead service life.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: February 17, 2015
    Assignee: Funai Electric Co., Ltd.
    Inventors: Paul William Dryer, Yimin Guan, Eunki Hong, Christopher John Money, Jose Paul Sacoto Aguilar
  • Ink composition for inkjet recording, inkjet recording method, and inkjet recorded material
    Patent number: 8945294
    Abstract: An ink composition having organic pigment particles, a hydrosoluble solvent; a dispersing agent, and water, wherein each of the organic pigment particles has a circularity of 2 nm or less, which is defined as a difference between radii of concentric circumscribing and inscribed circles of a contour of an image of each of the organic pigment particles taken by a transmission electron microscope when a gap between the concentric circumscribing circle and the inscribed circle is least, wherein the inscribed circle has a diameter of from 5 nm to less than 50 nm.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihiko Matsuyama, Hiroshi Gotou
  • Aqueous ink composition and recorded article formed by using the same
    Patent number: 8940088
    Abstract: In an advantage of embodiments of the invention, there is provided an aqueous ink composition at least containing water, silver particles, and a humectant, and the humectant is at least one member selected from glycerols, glycols, and saccharide.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: January 27, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Shiki Hirata, Takayoshi Kagata, Tsuyoshi Sano
  • Water-based ink for ink-jet recording, ink cartridge, ink-jet recording apparatus and ink-jet recording method
    Patent number: 8932392
    Abstract: There is provided a water-based ink for ink-jet recording including: a colorant; water; glycerol; and at least one of raffinose and a derivative thereof in an amount ranging from more than 0% by weight to not more than 2% by weight with respect to an entire amount of the water-based ink. There is also provided a water-based ink for ink-jet recording including: a colorant; water; glycerol; diethylene glycol; and at least one of raffinose and a derivative thereof.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: January 13, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Chisato Hayashi