Patents by Inventor Fumiaki Mera

Fumiaki Mera 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: 8541153
    Abstract: A toner for developing an electrostatic image contains at least one of an oxidation polymerizable monomer and a polymer having an ethylenically unsaturated group, and an oxidation polymerization catalyst in a form of a composite with inorganic particles, wherein a temperature T(10 Mpa) and a temperature T(1 Mpa) satisfies the following expression (1): 20° C.?T(1 MPa)?T(10 MPa)??(1) wherein, the temperature T(10 Mpa) is a temperature at which a viscosity of the toner under a pressure of 10 Mpa applied with a flow tester becomes 104 Pa·s, and the temperature T(1 Mpa) is a temperature at which a viscosity of the toner under a pressure of 1 Mpa applied with a flow tester becomes 104 Pa·s.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: September 24, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasuo Matsumura, Hirotaka Matsuoka, Hideo Maehata, Yuki Sasaki, Fumiaki Mera
  • Patent number: 8417156
    Abstract: An image forming method includes charging an image holding member; forming an electrostatic latent image on a surface of the image holding member; developing the electrostatic latent image formed on the surface of the image holding member with a toner or an electrostatic image developer to form a toner image; transferring the toner image formed on the surface of the image holding member onto a surface of a transfer-receiving material; fixing the toner image by pressurization without heating; feeding at least one photoreactive component to the toner or toner image; and irradiating the toner image with ultraviolet rays, wherein the toner satisfies the relationship of the following relational expression (1): TB(30)?100<TA(30)??(1) wherein TB (30) and TA (30) are defined in the specification.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: April 9, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fumiaki Mera, Masaki Hirakata, Hirofumi Shiozaki
  • Publication number: 20130017481
    Abstract: An electrostatic charge image developing toner includes: a polyester resin containing a graft copolymer, the graft copolymer being formed with a polyester skeleton as a main chain and block copolymers containing a styrene-based polymer block and a crystalline acrylate-based polymer block. The styrene-based polymer block is grafted onto the polyester skeleton.
    Type: Application
    Filed: January 30, 2012
    Publication date: January 17, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hideo MAEHATA, Fumiaki MERA, Kousaku YOSHIMURA
  • Patent number: 8288071
    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: Grant
    Filed: May 26, 2009
    Date of Patent: October 16, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuki Sasaki, Satoshi Hiraoka, Fumiaki Mera, Hirotaka Matsuoka, Yasuo Matsumura
  • Patent number: 8263303
    Abstract: A method for producing a colored resin particle dispersion liquid comprises: polycondensing a polyester-forming monomer in a nonaqueous solvent to produce an unsaturated polyester; graft-polymerizing an ethylenic unsaturated monomer to the unsaturated polyester in a nonaqueous solvent to produce a modified polyester resin; and dispersing a colorant and the modified polyester resin to produce a colored resin particle dispersion liquid, the polycondensing and the graft-polymerizing being carried out at a temperature of 150° C. or less.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: September 11, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hirotaka Matsuoka, Yuki Sasaki, Satoshi Hiraoka, Fumiaki Mera, Yasuo Matsumura
  • Patent number: 8168362
    Abstract: An electrostatic image developing toner includes a polyester resin, the electrostatic image developing toner having a sulfur element concentration S at % and a nitrogen element concentration N at % which satisfies 0.5?N/S?10, the nitrogen element concentration N being from 0.002 at % to 2.5 at %.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 1, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fumiaki Mera, Hirotaka Matsuoka, Yasuo Matsumura
  • Publication number: 20110269066
    Abstract: Methods and compositions including a compound represented by formula (I): wherein n represents an integer of from 1 to 4, RHL('s) each independently represents Cl or F, and R1 represents an alkyl group having from 8 to 20 carbon atoms.
    Type: Application
    Filed: July 8, 2011
    Publication date: November 3, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki Sasaki, Hirotaka Matsuoka, Satoshi Hiraoka, Fumiaki Mera, Yasuo Matsumura
  • Patent number: 8039186
    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: Grant
    Filed: August 18, 2006
    Date of Patent: October 18, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuki Sasaki, Fumiaki Mera, Satoshi Hiraoka, Hirotaka Matsuoka, Yasuo Matsumura
  • Patent number: 8003821
    Abstract: A Brønsted acid is a compound represented by formula (I): wherein n represents an integer of from 1 to 4, RHL('s) each independently represents Cl or F, and R1 represents an alkyl group having from 8 to 20 carbon atoms.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: August 23, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuki Sasaki, Hirotaka Matsuoka, Satoshi Hiraoka, Fumiaki Mera, Yasuo Matsumura
  • Publication number: 20110171572
    Abstract: A toner for developing an electrostatic image contains at least one of an oxidation polymerizable monomer and a polymer having an ethylenically unsaturated group, and an oxidation polymerization catalyst in a form of a composite with inorganic particles, wherein a temperature T(10 Mpa) and a temperature T(1 Mpa) satisfies the following expression (1): 20° C.?T(1 MPa)?T(10 MPa)??(1) wherein, the temperature T(10 Mpa) is a temperature at which a viscosity of the toner under a pressure of 10 Mpa applied with a flow tester becomes 104 Pa·s, and the temperature T(1 Mpa) is a temperature at which a viscosity of the toner under a pressure of 1 Mpa applied with a flow tester becomes 104 Pa·s.
    Type: Application
    Filed: August 30, 2010
    Publication date: July 14, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuo MATSUMURA, Hirotaka MATSUOKA, Hideo MAEHATA, Yuki SASAKI, Fumiaki MERA
  • Patent number: 7972757
    Abstract: A resin for an electrostatic-image-developing toner includes a graft polymer, wherein the graft polymer has a polyester structure in the main chain thereof; the graft polymer includes monomer units derived from vinyl monomers in the side chains thereof; and at least a part of the monomer units have a residue of surfactant.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: July 5, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hideo Maehata, Hirotaka Matsuoka, Fumiaki Mera
  • Publication number: 20110020030
    Abstract: An image forming method includes charging an image holding member; forming an electrostatic latent image on a surface of the image holding member; developing the electrostatic latent image formed on the surface of the image holding member with a toner or an electrostatic image developer to form a toner image; transferring the toner image formed on the surface of the image holding member onto a surface of a transfer-receiving material; fixing the toner image by pressurization without heating; feeding at least one photoreactive component to the toner or toner image; and irradiating the toner image with ultraviolet rays, wherein the toner satisfies the relationship of the following relational expression (1): TB(30)?100<TA(30)??(1) wherein TB (30) and TA (30) are defined in the specification.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 27, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Fumiaki Mera, Masaki Hirakata, Hirofumi Shiozaki
  • Publication number: 20110020743
    Abstract: A baroplastic includes a first resin with a first Tg; and a second resin with a second Tg that is lower than the first Tg by 20° C. or more, and has a photoreactive group.
    Type: Application
    Filed: May 7, 2010
    Publication date: January 27, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masaki HIRAKATA, Fumiaki Mera, Hirofumi Shiozaki
  • Patent number: 7776994
    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: Grant
    Filed: March 29, 2007
    Date of Patent: August 17, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fumiaki Mera, Hirotaka Matsuoka, Satoshi Hiraoka, Yuki Sasaki, Yasuo Matsumura
  • 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
  • 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