Patents by Inventor Atsushi Sugawara

Atsushi Sugawara 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: 20220308482
    Abstract: A method for producing a toner for developing an electrostatic charge image includes: aggregating at least resin particles contained in a dispersion by using an aluminum aggregating agent to form aggregated particles; heating and fusing the aggregated particles to form fused particles; cooling a dispersion containing the fused particles to obtain a toner particle dispersion; and adjusting a pH of the toner particle dispersion to 8 or more and 11 or less.
    Type: Application
    Filed: September 3, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Yuya KATO, Daisuke TOMITA, Atsushi SUGAWARA, Hiroshi NAKAZAWA
  • Publication number: 20220308477
    Abstract: A method for producing a toner for developing an electrostatic charge image includes aggregating at least resin particles contained in a dispersion to form aggregated particles; and heating and fusing the aggregated particles to form fused particles, in which, in the aggregating, aggregation is performed by taking out a portion of the dispersion containing the resin particles mixed in a stirring vessel, adding an aggregating agent aqueous solution thereto, passing the resulting mixture through a dispersing machine, and then returning the resulting mixture to the stirring vessel so as to circulate the dispersion, and when adding the aggregating agent aqueous solution, an aqueous solution containing an aggregating agent at a concentration of 0.1 mass % or more and 5 mass % or less is added at a flow rate q (L/min) such that a ratio of this flow rate q (L/min) to a flow rate Q (L/min) of the mixture returning from the dispersing machine to the stirring vessel is 0.01 or more and 0.1 or less.
    Type: Application
    Filed: September 7, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Takahisa TATEKAWA, Atsushi SUGAWARA, Hiroshi NAKAZAWA
  • Publication number: 20220308479
    Abstract: A preparing method of an electrostatic charge image developing toner includes: mixing an amorphous resin particle dispersion containing amorphous resin particles and a crystalline resin particle dispersion containing crystalline resin particles to prepare a mixed dispersion containing the amorphous resin particles and the crystalline resin particles; aggregating the amorphous resin particles and the crystalline resin particles in the mixed dispersion to form aggregated particles; and coalescing the aggregated particles by heating a dispersion containing the aggregated particles to form toner particles, in which both a zeta potential of the amorphous resin particle dispersion and a zeta potential of the crystalline resin particle dispersion are negative values, and an absolute value of the zeta potential of the crystalline resin particle dispersion is smaller than an absolute value of the zeta potential of the amorphous resin particle dispersion.
    Type: Application
    Filed: July 14, 2021
    Publication date: September 29, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi SUGAWARA, Daisuke NOGUCHI, Kazuhiko NAKAMURA, Hiroshi NAKAZAWA
  • Publication number: 20220299900
    Abstract: A preparing method of an electrostatic charge image developing toner includes: aggregating at least binder resin particles and release agent particles contained in a dispersion to form aggregated particles; heating and coalescing the aggregated particles to form coalesced particles; and filtering and cleaning the coalesced particles to obtain toner particles, in which before the aggregating or during the aggregating, a polymer dispersant is added to the dispersion in an amount of 0.01% by weight or more and 1.3% by weight or less with respect to a total weight of the obtained toner particles.
    Type: Application
    Filed: July 13, 2021
    Publication date: September 22, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Yuta Saeki, Atsushi Sugawara, Daisuke Noguchi, Kazuhiko Nakamura, Hiroshi Nakazawa
  • Publication number: 20220299895
    Abstract: A method for producing a toner for developing an electrostatic charge image includes: mixing at least one flocculant into a liquid dispersion containing binder-resin particles by adding the flocculant into the liquid dispersion containing binder-resin particles while circulating the liquid dispersion containing binder-resin particles between a stirring vessel and a disperser that applies a mechanical shear force; forming aggregated particles by heating the liquid dispersion with the flocculant therein after reducing the viscosity of the liquid dispersion; and forming toner particles by heating the liquid dispersion containing the aggregated particles and thereby making the aggregated particles fuse and coalesce.
    Type: Application
    Filed: August 10, 2021
    Publication date: September 22, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke NOGUCHI, Atsushi Sugawara, Yuji Isshiki, Hiroshi Nakazawa
  • Publication number: 20220272249
    Abstract: An image capture apparatus includes an image sensor that captures a subject image formed via a lens and outputs an image; and at least one processor or circuit configured to function as: a detection unit configured to detect flicker from the image output from the image sensor; and a control unit configured, in a case where, in an image capture time period in which images of a subject are being captured for flicker detection by the image sensor, the lens is driven in accordance with a drive operation that causes a change in an amount of light received by the image sensor, to adjust drive of the lens in the image capture time period.
    Type: Application
    Filed: February 22, 2022
    Publication date: August 25, 2022
    Inventor: Atsushi Sugawara
  • Publication number: 20220228018
    Abstract: To provide an aqueous composition for aqueous coating that contains a polymerized substance of a N-vinyl carboxylic acid amide and that dries efficiently when used to produce a coating substance. A composition for aqueous coating liquid, comprising at least a copolymer of a N-vinyl carboxylic acid amide monomer and a monomer of a salt of an unsaturated carboxylic acid, and water, in which the molar ratio between the N-vinyl carboxylic acid amide monomer and the monomer of a salt of an unsaturated carboxylic acid is 7.0:93.0 to 93.0:7.0, and the weight-average molecular weight of the copolymer is 15,000 to 2,500,000.
    Type: Application
    Filed: May 18, 2020
    Publication date: July 21, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Atsushi SUGAWARA, Jun KONISHI
  • Patent number: 11392052
    Abstract: An electrostatic image developing toner includes a toner particle, an external additive A, and an external additive B. At least the external additive A is present on the surface of the toner particles. At least the external additive B is present on the external additive A. The number of peaks of the external additive B on the external additive A is 5 or more and 100 or less per 30 ?m peripheral length of the toner particle, the peaks having a height from the surface of the toner particle of 80 nm or more and 250 nm or less.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: July 19, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yasuko Torii, Yosuke Tsurumi, Atsushi Sugawara, Yoshimasa Fujihara, Moegi Iguchi
  • Publication number: 20220215981
    Abstract: The present invention relates to an electrically conductive polymer composition having high dispersion stability in long-term storage without being influenced by air temperature changes in the winter season, the summer period, etc. and a method for stably storing an electrically conductive polymer solution. An electrically conductive polymer composition comprising at least a N-vinyl carboxylic acid amide polymer having a weight-average molecular weight within the range of not less than 5000 and not more than one million, an electrically conductive polymer, and a solvent. A method for stably storing an electrically conductive polymer solution, the method comprising adding, to an electrically conductive polymer solution, a N-vinyl carboxylic acid amide polymer having a weight-average molecular weight within the range of not less than 5000 and not more than one million.
    Type: Application
    Filed: May 14, 2020
    Publication date: July 7, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Atsushi SUGAWARA, Jun KONISHI
  • Patent number: 11353803
    Abstract: A toner for electrostatic image development includes toner particles containing an amorphous resin and a crystalline resin. The toner particles include first toner particles. When a cross section of each of the first toner particles is observed, at least two domains of the crystalline resin satisfy conditions (A), (B1), (C), and (D) below: condition (A): an aspect ratio of each of the at least two domains of the crystalline resin is from 5 to 40 inclusive; condition (B1): a length of a major axis of each of the at least two domains of the crystalline resin is from 0.5 ?m to 1.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: June 7, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi Sugawara, Shintaro Anno, Yoshimasa Fujihara, Daisuke Noguchi, Satoshi Miura
  • Patent number: 11346358
    Abstract: Provided are an impeller and a centrifugal pump that can be simplified in structure and reduced in weight and cost, and that can be integrally molded by a mold or the like. In a centrifugal pump including a housing having an inlet, an outlet and an impeller chamber, an impeller is disposed in the impeller chamber and is rotationally driven by a driving shaft. The impeller includes: a shaft part connected to the driving shaft to rotate about an axis line extending toward the inlet; blades protruding radially outward from an outer periphery of the shaft part; and an annular shroud plate continuous with the blades so as to cover a tip side area of the blades in order to be disposed adjacent to an inner wall of the housing on the inlet side.
    Type: Grant
    Filed: March 22, 2020
    Date of Patent: May 31, 2022
    Assignee: MIKUNI CORPORATION
    Inventors: Norio Takehana, Hideaki Kusanagi, Yuichi Mikami, Atsushi Sugawara, Shin Saito
  • Publication number: 20220153897
    Abstract: Proposed is a method for producing an aqueous solution, which has a thickening property, of an N-vinyl carboxylic acid amide copolymer. This method for producing an aqueous solution of an N-vinyl carboxylic acid amide copolymer is characterized in that a liquid containing at least a non-hydrophilic monomer (B), which is at least one selected from acrylonitrile and methyl acrylate, and a liquid containing at least a polymerization initiator (D) are added dropwise to an aqueous solution of an N-vinyl carboxylic acid amide monomer (A), and polymerization is performed.
    Type: Application
    Filed: March 19, 2020
    Publication date: May 19, 2022
    Applicant: SHOWA DENKO K.K.
    Inventors: Atsushi SUGAWARA, Jun KONISHI
  • Publication number: 20220091521
    Abstract: A toner for electrostatic image development includes toner particles containing an amorphous resin and a crystalline resin. The toner particles include first toner particles. When a cross section of each of the first toner particles is observed, at least two domains of the crystalline resin satisfy conditions (A), (B1), (C), and (D) below: condition (A): an aspect ratio of each of the at least two domains of the crystalline resin is from 5 to 40 inclusive; condition (B1): a length of a major axis of each of the at least two domains of the crystalline resin is from 0.5 ?m to 1.
    Type: Application
    Filed: January 19, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Atsushi SUGAWARA, Shintaro ANNO, Yoshimasa FUJIHARA, Daisuke NOGUCHI, Satoshi MIURA
  • Publication number: 20220091524
    Abstract: An electrostatic image developing toner includes an amorphous polyester resin, a crystalline polyester resin, and C.I. Pigment Red 57:1, wherein a Net intensity NMg of an Mg element, the Net intensity NMg of being determined by X-ray fluorescence analysis, is 0.10 kcps or more and 0.40 kcps or less.
    Type: Application
    Filed: December 31, 2020
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi Miura, Shintaro Anno, Daisuke Noguchi, Yoshimasa Fujihara, Atsushi Sugawara
  • Publication number: 20220091523
    Abstract: A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.02 to 0.15 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.
    Type: Application
    Filed: January 21, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX Co., Ltd.
    Inventors: Yoshimasa FUJIHARA, Atsushi Sugawara, Shintaro Anno, Daisuke Noguchi, Satoshi Miura
  • Publication number: 20220091528
    Abstract: A toner for electrostatic image development contains toner particles containing a binder resin. The binder resin includes an amorphous resin and a crystalline resin. In the toner particles, a Net intensity of elemental Mg measured by X-ray fluorescence analysis is from 0.40 to 1.20 inclusive, and a Net intensity of elemental Cl measured by X-ray fluorescence analysis is from 0.02 to 0.60 inclusive.
    Type: Application
    Filed: January 25, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshimasa FUJIHARA, Atsushi SUGAWARA, Shintaro ANNO, Daisuke NOGUCHI, Satoshi MIURA
  • Publication number: 20220091525
    Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of a metal salt of a fatty acid.
    Type: Application
    Filed: January 8, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro Anno, Yoshimasa Fujihara, Atsushi Sugawara, Daisuke Noguchi, Satoshi Miura
  • Publication number: 20220091526
    Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that in an x-ray fluorescence analysis of the toner, the net intensity of the peak for the Mg element is 0.10 kcps or more and 1.20 kcps or less; and at least one external additive including particles of at least one compound represented by formula (1), MTiO3??(1) where M represents at least one selected from the group consisting of Ca, Sr, and Ba.
    Type: Application
    Filed: January 12, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro ANNO, Atsushi SUGAWARA, Yoshimasa FUJIHARA, Daisuke NOGUCHI, Satoshi MIURA
  • Publication number: 20220091529
    Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin; the Mg element in an amount such that the net intensity of x-ray fluorescence from the Mg element in the toner is 0.10 kcps or more and 1.20 kcps or less; and external additives including particles of at least one compound represented by formula (1) and particles of a metal salt of a fatty acid, MTiO3 ??(1) where M represents at least one selected from the group consisting of Ca, Sr, and Ba.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro ANNO, Yoshimasa FUJIHARA, Atsushi SUGAWARA, Daisuke NOGUCHI, Satoshi MIURA
  • Publication number: 20220091527
    Abstract: An electrostatic image developing toner includes an amorphous polyester resin and a crystalline polyester resin, wherein a Net intensity NNa of a Na element and a Net intensity NCl of a Cl element, the Net intensities NNa and NCl being determined by X-ray fluorescence analysis, satisfy 2.5?NCl/NNa?260.0.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 24, 2022
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Daisuke NOGUCHI, Atsushi SUGAWARA, Yoshimasa FUJIHARA, Shintaro ANNO, Satoshi MIURA