Patents by Inventor Yoshihiro Inaba

Yoshihiro Inaba 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: 8911925
    Abstract: A liquid developer contains a carrier liquid, and toner particles containing a binder resin and a pigment surface-treated with a polyallylamine compound as a colorant.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 16, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Oki, Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba
  • Publication number: 20140272693
    Abstract: A toner includes a crystalline polyester resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a photopolymerization initiator.
    Type: Application
    Filed: August 8, 2013
    Publication date: September 18, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Koji HORIBA, Yoshihiro INABA, Daisuke YOSHINO, Takako KOBAYASHI, Akira IMAI, Masahiro OKI, Hiroyuki MORIYA
  • Patent number: 8741527
    Abstract: A liquid developer includes: a carrier liquid; and toner particles that are dispersed in the carrier liquid and that includes a styrene-based thermoplastic elastomer, a styrene-based thermoplastic resin, and a quaternary ammonium base-containing polymer having a constituent unit expressed by Chemical Formula I: wherein R1 represents hydrogen or an alkyl group with a carbon number equal to or less than 3, R2 represents an alkylene group with a carbon number equal to or less than 18, R3 to R5 represent an alkyl group or an aralkyl group with a carbon number equal to or less than 18, X represents —COO— or —CONH—, and Y? represents a halogen ion or an anion having a —COO— group or a —SO3— group in the structure thereof.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: June 3, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba, Takahiro Ishizuka, Masahiro Oki, Ryosaku Igarashi
  • Patent number: 8673531
    Abstract: The present invention provides a liquid developer including an insulating carrier liquid and toner particles containing a binder resin, the binder resin including a styrene-based thermoplastic elastomer and a styrene thermoplastic resin, and the toner particles being dispersed in the insulating carrier liquid.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: March 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba, Ryosaku Igarashi
  • Patent number: 8658338
    Abstract: A toner includes a resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a polymerization initiator.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Koji Horiba, Takahiro Ishizuka, Yoshihiro Inaba, Akira Imai, Ryosaku Igarashi, Takako Kobayashi, Daisuke Yoshino, Masahiro Oki
  • Patent number: 8563209
    Abstract: A liquid developer includes: a carrier liquid and toner particles dispersed in the carrier liquid, including a binder resin which contains a thermoplastic resin having repeating units derived from a monomer having a styrene skeleton and repeating units derived from a monomer having an acrylic ester structure, and a thermoplastic elastomer resin that is a block copolymer, the block copolymer having a first block portion including repeating units derived from a monomer having a styrene skeleton, a second block portion including repeating units derived from an alkene having 2 to 6 carbon atoms, and a third block portion including repeating units derived from a monomer having a styrene skeleton and these block portions being bonded in this order.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: October 22, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Koji Horiba, Yoshihiro Inaba, Ryosaku Igarashi, Akira Imai, Takako Kobayashi, Daisuke Yoshino, Takahiro Ishizuka
  • Publication number: 20130224650
    Abstract: A liquid developer contains a carrier liquid, and toner particles containing a binder resin and a pigment surface-treated with a polyallylamine compound as a colorant.
    Type: Application
    Filed: August 21, 2012
    Publication date: August 29, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro OKI, Yoshihiro INABA, Akira IMAI, Daisuke YOSHINO, Takako KOBAYASHI, Koji HORIBA
  • Publication number: 20130216943
    Abstract: A toner includes a resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a polymerization initiator.
    Type: Application
    Filed: August 17, 2012
    Publication date: August 22, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Koji HORIBA, Takahiro ISHIZUKA, Yoshihiro INABA, Akira IMAI, Ryosaku IGARASHI, Takako KOBAYASHI, Daisuke YOSHINO, Masahiro OKI
  • Publication number: 20130196258
    Abstract: A toner includes a binder resin including an amorphous polyester resin (A), a crystalline polyester resin (B), and a polyurethane thermoplastic elastomer (C).
    Type: Application
    Filed: July 24, 2012
    Publication date: August 1, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro INABA, Daisuke YOSHINO, Akira IMAI, Takako KOBAYASHI, Koji HORIBA, Masahiro OKI, Ryosaku IGARASHI
  • Publication number: 20130078568
    Abstract: A liquid developer includes: a carrier liquid; and toner particles that are dispersed in the carrier liquid and that includes a styrene-based thermoplastic elastomer, a styrene-based thermoplastic resin, and a quaternary ammonium base-containing polymer having a constituent unit expressed by Chemical Formula I: wherein R1 represents hydrogen or an alkyl group with a carbon number equal to or less than 3, R2 represents an alkylene group with a carbon number equal to or less than 18, R3 to R5 represent an alkyl group or an aralkyl group with a carbon number equal to or less than 18, X represents —COO— or —CONH—, and Y? represents a halogen ion or an anion having a —COO— group or a —SO3— group in the structure thereof.
    Type: Application
    Filed: December 28, 2011
    Publication date: March 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro INABA, Akira IMAI, Daisuke YOSHINO, Takako KOBAYASHI, Koji HORIBA, Takahiro ISHIZUKA, Masahiro OKI, Ryosaku IGARASHI
  • Patent number: 8349530
    Abstract: A magnetic polymer particle develops a magnetic latent image. The magnetic polymer particle includes a magnetic component, a polymer, and a colorant. The magnetic component is a magnetic particle containing iron having a number average particle diameter of from about 0.2 ?m to about 1.2 ?m. The magnetic particle is contained in one magnetic polymer particle in an amount of from 1 to 10 particles. The number average particle diameter of the magnetic polymer particle is from about 2.0 ?m to about 7.0 ?m.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: January 8, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takako Kobayashi, Yoshihiro Inaba
  • Patent number: 8304154
    Abstract: The present invention provides a particle dispersion liquid including (meth)acrylic resin-containing hydrophobic particles, an acetylene glycol surfactant adsorbed to the hydrophobic particles, and water; the particle size, in a state of being swollen due to absorbing water until saturation, of the hydrophobic particles to which the acetylene glycol surfactant has been adsorbed being 1.1 to 2 times as large as the particle size of the hydrophobic particles in a dried state.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: November 6, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takako Kobayashi, Yoshihiro Inaba, Ryosaku Igarashi, Masahiro Takamatsu
  • Publication number: 20120189954
    Abstract: A liquid developer includes: a carrier liquid and toner particles dispersed in the carrier liquid, including a binder resin which contains a thermoplastic resin having repeating units derived from a monomer having a styrene skeleton and repeating units derived from a monomer having an acrylic ester structure, and a thermoplastic elastomer resin that is a block copolymer, the block copolymer having a first block portion including repeating units derived from a monomer having a styrene skeleton, a second block portion including repeating units derived from an alkene having 2 to 6 carbon atoms, and a third block portion including repeating units derived from a monomer having a styrene skeleton and these block portions being bonded in this order.
    Type: Application
    Filed: August 18, 2011
    Publication date: July 26, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Koji HORIBA, Yoshihiro INABA, Ryosaku IGARASHI, Akira IMAI, Takako KOBAYASHI, Daisuke YOSHINO, Takahiro ISHIZUKA
  • Publication number: 20120141933
    Abstract: The present invention provides a liquid developer including an insulating carrier liquid and toner particles containing a binder resin, the binder resin including a styrene-based thermoplastic elastomer and a styrene thermoplastic resin, and the toner particles being dispersed in the insulating carrier liquid.
    Type: Application
    Filed: May 31, 2011
    Publication date: June 7, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro INABA, Akira IMAI, Daisuke YOSHINO, Takako KOBAYASHI, Koji HORIBA, Ryosaku IGARASHI
  • Patent number: 8129084
    Abstract: A liquid developer includes: magnetic polymer particles including a magnetic material containing yttrium iron garnet (YIG), a polymer compound having a carboxylate salt structure, and a colorant; and a dispersion medium in which the magnetic polymer particles are dispersed.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: March 6, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Takako Kobayashi, Ryosaku Igarashi
  • Patent number: 7973118
    Abstract: Ink receiving particles is provided. The ink receiving particles includes polymer particles, the polymer particles including a resin including an acidic group and a polyoxyethylene chain, the acidic group at least partially having a salt structure.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: July 5, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Kentaro Ageishi, Takako Kobayashi, Ryosaku Igarashi
  • Patent number: 7943695
    Abstract: The present invention provides a magnetic polymer particle, including a magnetic powder; a crosslinked polymer of an ethylenically unsaturated monomer; and a non-crosslinked polymer, in which an amount of the magnetic powder with respect to a total amount of the magnetic polymer particle is in a range of about 2.5 to about 50% by mass, the ethylenically unsaturated monomer includes a monomer having a hydroxyl group and a hydrophobic monomer which is free from a hydroxyl group, and an amount of the hydroxyl groups included in the crosslinked polymer and the non-crosslinked polymer is in a range of about 0.1 to about 5.0 mmol/g with respect to a total amount of the crosslinked polymer and the non-crosslinked polymer. Further, the invention provides a method of producing the magnetic polymer particle, and an aqueous dispersion, a cartridge, and an image forming apparatus, all of which use the magnetic polymer particle.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: May 17, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihiro Inaba, Takako Kobayashi
  • Publication number: 20100248111
    Abstract: The present invention provides a particle dispersion liquid including (meth)acrylic resin-containing hydrophobic particles, an acetylene glycol surfactant adsorbed to the hydrophobic particles, and water; the particle size, in a state of being swollen due to absorbing water until saturation, of the hydrophobic particles to which the acetylene glycol surfactant has been adsorbed being 1.1 to 2 times as large as the particle size of the hydrophobic particles in a dried state.
    Type: Application
    Filed: September 2, 2009
    Publication date: September 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takako Kobayashi, Yoshihiro Inaba, Ryosaku Igarashi, Masahiro Takamatsu
  • Publication number: 20100248127
    Abstract: A liquid developer includes: magnetic polymer particles including a magnetic material containing yttrium iron garnet (YIG), a polymer compound having a carboxylate salt structure, and a colorant; and a dispersion medium in which the magnetic polymer particles are dispersed.
    Type: Application
    Filed: August 21, 2009
    Publication date: September 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro INABA, Takako KOBAYASHI, Ryosaku IGARASHI
  • Publication number: 20100227982
    Abstract: Ink receiving particles is provided. The ink receiving particles includes polymer particles, the polymer particles including a resin including an acidic group and a polyoxyethylene chain, the acidic group at least partially having a salt structure.
    Type: Application
    Filed: August 19, 2009
    Publication date: September 9, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro Inaba, Kentaro Ageishi, Takako Kobayashi, Ryosaku Igarashi