Patents by Inventor Satoshi Hiraoka

Satoshi Hiraoka 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).

  • Publication number: 20100108301
    Abstract: Cooling performance of a cooler for pre-cooling humid gas supplied to a gas turbine power generation plant, etc. is improved by increasing heat transfer efficiency between the humid gas and cooling liquid flowing in heat exchanger tubes with utilization of condensed liquid generated due to the cooling of the humid gas. In a heat exchanger for cooling humid gas a flowing surrounding heat exchanger tubes 8 of the tube groups 9a and 9b by flowing cooling liquid r in the tubes, the liquid droplets cl generated by condensation of moisture contained in the humid gas are gathered and sprinkled or fallen in drops on a part of the heat exchanger tube group 9b, which results in increased heat exchange efficiency.
    Type: Application
    Filed: November 3, 2008
    Publication date: May 6, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi HIRAOKA, Koichi INOUE
  • Patent number: 7695886
    Abstract: A process for producing a resin particle liquid dispersion for an electrostatic image developing toner, the process comprising: polycondensing a polycondensable monomer by utilizing an acid having a surface activating effect as a polycondensation catalyst, so as to obtain a polycondensed resin; and dispersing the polycondensed resin in an aqueous medium to which a base is added, so as to obtain a resin particle liquid dispersion in which a median diameter of resin particles is from 0.05 to 2.0 ?m, or the process comprising: polycondensing a polycondensable monomer by utilizing an acid having a surface activating effect as a polycondensation catalyst in a co-presence of a polycondensed resin, so as to obtain a polycondensed resin-containing material; and dispersing the polycondensed resin-containing material in an aqueous medium, so as to obtain a resin particle liquid dispersion in which a median diameter of resin particles is from 0.05 to 2.0 ?m.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: April 13, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Satoshi Hiraoka, Yuki Sasaki, Fumiaki Mera, Hideo Maehata
  • Publication number: 20100047705
    Abstract: A toner for developing an electrostatic image comprises: a binder resin; and a releasing agent, wherein the binder resin comprises a polycondensation resin obtained by polycondensing a polycondensation monomer in the presence of a polycondensation catalyst, the releasing agent comprises a condensation compound obtained by condensing a condensation monomer in the presence of a condensation catalyst, the toner contains a metallic element derived from the polycondensation catalyst and the condensation catalyst in an amount of from 0 to 10 ppm, and the toner contains a sulfur component in an amount of from 100 to 20,000 ppm.
    Type: Application
    Filed: October 29, 2009
    Publication date: February 25, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki SASAKI, Fumiaki MERA, Satoshi HIRAOKA, Hirotaka Matsuoka, Yasuo MATSUMURA
  • Patent number: 7662536
    Abstract: A resin particle liquid dispersion for an electrostatic image developing toner includes: a polycondensable resin obtained by polycondensing at least one selected from the group consisting of a polycondensable monomer, an oligomer of the polycondensable monomer and a prepolymer of the polycondensable monomer, wherein the resin particle liquid dispersion further comprises a compound having a solubility parameter of 8 or less.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: February 16, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Hideo Maehata, Satoshi Hiraoka, Yuki Sasaki, Fumiaki Mera
  • Publication number: 20100012903
    Abstract: The present invention provides display device particles that have positive or negative chargeability and have color and are produced using at least a calcium compound, in which a concentration of the calcium compound in the display device particle is 0.05% by weight or less in terms of a calcium element content, a process for producing the display device particles, as well as an image-display medium and an image-forming device each using the display device particles.
    Type: Application
    Filed: September 25, 2009
    Publication date: January 21, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hidehiko SOYAMA, Satoshi Hiraoka, Yasuo Yamamoto
  • Patent number: 7645553
    Abstract: An image forming method, which comprises: forming an electrostatic latent image on a surface of a latent image supporting member; developing the electrostatic latent image formed on the surface of the latent image supporting member with a toner for developing an electrostatic latent image or an electrostatic latent image developer containing the toner and a carrier to form a toner image; transferring the toner image formed on the surface of the latent image supporting member onto a surface of a transfer receiving material; and fixing the toner image transferred onto the transfer receiving material under pressure, wherein the toner comprises a block copolymer having a crystalline polyester block and a non-crystalline polyester block, and wherein a maximum pressure applied when the image is fixed is 1 MPa or greater but not greater than 10 MPa.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: January 12, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Hideo Maehata, Satoshi Hiraoka, Yuki Sasaki, Fumiaki Mera
  • Patent number: 7629098
    Abstract: A method of producing a toner for developing electrostatic charge image, the method comprising: aggregating particles containing a crystalline polyester resin, particles containing a non-crystalline polyester resin and particles of a releasing agent in an aqueous medium, so as to form aggregated particles; and heating the aggregated particles to fuse into a coalescent body, wherein at least one of the crystalline polyester resin and the non-crystalline polyester resin is obtained by polymerization at temperatures not higher than 150° C. with a Bronsted acid containing a sulfur atom as a catalyst, and wherein a first onset temperature A(° C.) of the toner and a glass transition temperature B(° C.) of the non-crystalline polyester resin as measured by differential scanning calorimeter satisfy a relation (B?A)?10, and wherein a weight average molecular weight of the crystalline polyester resin is ½ or lower of a weight average molecular weight of the non-crystalline polyester resin.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: December 8, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Satoshi Hiraoka, Yuki Sasaki, Fumiaki Mera, Hideo Maehata
  • Publication number: 20090297977
    Abstract: A resin particle liquid dispersion for an electrostatic image developing toner, comprising: an aqueous medium; and a resin particle dispersed in the aqueous medium to have a median diameter of 0.05 to 2.0 ?m, the resin particle comprising a polycondensable polymer obtained by polycondensing polycondensable monomers, wherein a storage modulus GL(30) of the resin particle at 30° C. is 1×107 Pa or more, and a melting point of the polycondensable polymer is from 45 to 110° C.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 3, 2009
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki Sasaki, Satoshi Hiraoka, Fumiaki Mera, Hirotaka Matsuoka, Yasuo Matsumura
  • Patent number: 7619041
    Abstract: A resin particle producing method that includes at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form droplets of the composition, and a polymerization step of polymerizing the polymerizable monomer in the droplets to synthesize resin particles, wherein the composition contains a polyester resin, lactone, and a lactone catalyst for polymerizing the lactone.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: November 17, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Yamamoto, Satoshi Hiraoka, Hideo Maehata, Yasuo Matsumura
  • Patent number: 7616373
    Abstract: The present invention provides display device particles that have positive or negative chargeability and have color and are produced using at least a calcium compound, in which a concentration of the calcium compound in the display device particle is 0.05% by weight or less in terms of a calcium element content, a process for producing the display device particles, as well as an image-display medium and an image-forming device each using the display device particles.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: November 10, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hidehiko Soyama, Satoshi Hiraoka, Yasuo Yamamoto
  • Patent number: 7560213
    Abstract: A resin particle liquid dispersion for an electrostatic image developing toner comprises: a terminal addition-polymerized polyester having an acid value of from about 5 to about 70 mg·KOH/g, and the terminal addition-polymerized polyester is obtained by a process comprising: polycondensing a polycondensable monomer having a composition comprising the components (a) to (c) described in the specification to obtain a polyester having an addition-polymerizable unsaturated group at a terminal; and addition-polymerizing the addition-polymerizable unsaturated group of the polyester having an addition-polymerizable unsaturated group at a terminal.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: July 14, 2009
    Assignee: Fuji Xerox Co., Ltd
    Inventors: Hirotaka Matsuoka, Yuki Sasaki, Yasuo Matsumura, Fumiaki Mera, Satoshi Hiraoka
  • Patent number: 7547500
    Abstract: A binder resin for an electrostatic image developing toner, obtained by polycondensation reaction of a polycarboxylic acid and a polyol, wherein the polycarboxylic acid comprises at least one of a compound represented by formula (1) and a compound represented by formula (2) in an amount of from 50 to 100 mol %, the polyol comprises a compound represented by formula (3) in an amount of from 50 to 100 mol %, and a content of a catalyst-originated metal element in the resin is 100 ppm or less: R1OOCA1mB1nA1lCOOR1???(1) (wherein A1 is a methylene group, B1 is an aromatic hydrocarbon group, R1 and R1? each is a hydrogen atom or a monovalent hydrocarbon group, 1?m+1?12, and 1?n?3); R2OOCA2pB2qA2rCOOR2???(2) (wherein A2 is a methylene group, B2 is an alicyclic hydrocarbon group, R2 and R2? each is a hydrogen atom or a monovalent hydrocarbon group, 0?p?6, 0?r?6, and 1?q?3); HOXhYjXkOH??(3) (wherein X is an alkylene oxide group, Y is a bisphenol structure group, 1?h+k?10, and 1?j?3).
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 16, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuki Sasaki, Satoshi Hiraoka, Fumiaki Mera, Hirotaka Matsuoka, Yasuo Matsumura
  • Patent number: 7524603
    Abstract: A binder resin for an electrostatic image developing toner is obtained by a polycondensation reaction of a polycarboxylic acid and a polyol, wherein the polycarboxylic acid includes a compound represented by at least one of formula (1) and formula (2) as defined in the specification in an amount of from about 50 to about 100 mol %; the polyol includes a compound represented by formula (3) as defined in the specification in an amount of from about 10 to about 100 mol %; and a content of a catalyst-originated metal element in the binder resin is about 100 ppm or less R1OOCA1mB1nA1lCOOR1???(1) R2OOCA2pB2qA2rCOOR2???(2) HOXh-Ph-Y-Ph-XkOH ??(3).
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: April 28, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fumiaki Mera, Hirotaka Matsuoka, Satoshi Hiraoka, Yuki Sasaki, Yasuo Matsumura
  • Patent number: 7510811
    Abstract: A toner for developing an electrostatic image of the present invention contains toner particles obtained by forming coagulated particles by mixing a resin particle dispersion solution containing dispersed resin particles and a coloring agent dispersion solution containing dispersed coloring agent particles and fusing the coagulated particles by heating them and is characterized in that at least the surfaces of the toner particles have a chemical structure formed by reaction with a compound having a carbodiimido group. The invention also provides a resin particle dispersion solution to be used for the production of toner.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: March 31, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Hideo Maehata, Satoshi Hiraoka, Yuki Sasaki, Fumiaki Mera
  • Patent number: 7473511
    Abstract: The invention provides a particle dispersion for an electrostatic image-developing toner containing either polycondensation resin particles, which are prepared by polycondensation of polycondensable monomers in an aqueous medium, or condensation compound particles, which are prepared by dehydration condensation of a condensable compound in an aqueous medium. The particles have a median diameter of approximately 0.05 to 2.0 ?m. A dispersion containing the polycondensation resin particles is produced by dispersing resin particles, aggregating the resin particles, and coalescing the aggregated particles by heating.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: January 6, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Hideo Maehata, Satoshi Hiraoka, Yuki Sasaki, Fumiaki Mera
  • Patent number: 7455944
    Abstract: The present invention provides a toner for developing electrostatic latent images, including resin particles containing a crystalline polymer and an amorphous polymer, wherein the amorphous polymer and the crystalline polymer satisfy the relationship represented by the following formula (1), and a method for manufacturing the toner of the invention. The present invention also provides a developer for electrostatic latent images including the toner of the invention and a carrier; and an image forming method using the toner of the invention. Further the invention provides a method for manufacturing a dispersion of resin particles. ?a??c?1.05[(cal/ml)1/2(25° C.)]??Formula (1) In formula (1), ?a represents a solubility parameter of the amorphous polymer, and ?c represents a solubility parameter of the crystalline polymer.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: November 25, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hideo Maehata, Yasuo Yamamoto, Satoshi Hiraoka, Yasuo Matsumura, Hirotaka Matsuoka, Yuki Sasaki, Fumiaki Mera
  • Publication number: 20080234439
    Abstract: A resin particle producing method that includes at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form droplets of the composition, and a polymerization step of polymerizing the polymerizable monomer in the droplets to synthesize resin particles, wherein the composition contains a polyester resin, lactone, and a lactone catalyst for polymerizing the lactone.
    Type: Application
    Filed: April 23, 2008
    Publication date: September 25, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuo Yamamoto, Satoshi Hiraoka, Hideo Maehata, Yasuo Matsumura
  • Patent number: 7420020
    Abstract: A producing method of resin particles, which comprises at least an emulsification step of emulsifying a composition containing at least a polymerizable monomer and a polymerization step to form droplets of the composition, and a polymerization step of polymerizing the polymerizable monomer in the droplets to synthesize resin particles, wherein the composition is one selected from Composition A, Composition B, or Composition C: (Composition A): a composition containing a vinyl-based monomer, lactone, a vinyl-based monomer polymerization catalyst for polymerizing the vinyl-based monomer, and a lactone polymerization catalyst for polymerizing the lactone (Composition B): a composition containing a polyester resin, lactone, and a lactone catalyst for polymerizing the lactone (Composition C): a composition containing a vinyl-based monomer, a cyclic keteneacetal compound represented by the following general formula (1), and a radical polymerization initiator (in the general formula (1), R represents a ch
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: September 2, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Yamamoto, Satoshi Hiraoka, Hideo Maehata, Yasuo Matsumura
  • Patent number: 7378210
    Abstract: The present invention provides a binder resin that is used for an electrophotographic toner, an electrophotographic toner using the same, and a manufacturing method thereof, as well as an electrophotographic developer and an image forming method. The binder resin includes a rare earth element in a range of about 1 to 10000 ppm and is preferably made of a polyester resin. The polyester resin is preferably synthesized from from an acid unit having a dicarboxylic acid group and an alcohol unit having a diol group by use of a non-homogeneous catalyst in which a rare earth metal triflate or a rare earth metal triflylimide is carried on a carrier.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: May 27, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Satoshi Hiraoka, Yasuo Yamamoto, Hideo Maehata, Yasuo Matsumura
  • Publication number: 20080038646
    Abstract: A resin particle dispersion liquid comprises: resin particles comprising polyester having terminal carboxyl groups, the polyester being obtained by polycondensation of a polycondensable monomer, wherein the polyester has the terminal carboxyl groups that are partially neutralized to form carboxyl anions, the resin particles in the resin particle dispersion liquid having a value of (da/(da+dc)) of from approximately 0.30 to approximately 0.90, when in an absorption spectrum of the resin particles measured with an infrared spectrometer, dc represents a peak intensity of the terminal carboxyl group in a range of from 1,780 to 1,680 cm?1, and da represents a peak intensity of the neutralized carboxyl anion in a range of from 1,670 to 1,550 cm?1, the polyester has an acid value of approximately 1 mg·KOH/g or more and less than approximately 15 mg·KOH/g before neutralization, the resin particles dispersion liquid comprises a divalent or higher organic acid in an amount of from approximately 0.
    Type: Application
    Filed: March 29, 2007
    Publication date: February 14, 2008
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Fumiaki Mera, Hirotaka Matsuoka, Satoshi Hiraoka, Yuki Sasaki, Yasuo Matsumura