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).

  • Patent number: 11550235
    Abstract: An electrostatic image developing toner includes toner particles, an external additive A, and an external additive B. At least the external additive A is deposited on the surfaces of the toner particles. At least the external additive B is deposited on the external additive A. The external additive B includes an aggregate of two or more particles. The coverage of the toner particles with the external additive B is 3% by area or more with respect to the total surface area of the toner particles.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: January 10, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi Sugawara, Yosuke Tsurumi, Yasuko Torii, Yoshimasa Fujihara, Moegi Iguchi
  • Patent number: 11550236
    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: Grant
    Filed: January 21, 2021
    Date of Patent: January 10, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yoshimasa Fujihara, Atsushi Sugawara, Shintaro Anno, Daisuke Noguchi, Satoshi Miura
  • Patent number: 11531284
    Abstract: An electrostatic image developing toner includes toner particles including a binder resin and a release agent, 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 external additive B is an aggregate of two or more particles. The toner particles have an average circularity of 0.8 or more and 0.94 or less. The amount of the release agent present at the surface of the toner particles is 5 area % or more and 30 area % or less based on the total surface area of the toner particles.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: December 20, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Moegi Iguchi, Yosuke Tsurumi, Atsushi Sugawara, Yoshimasa Fujihara, Yasuko Torii
  • Publication number: 20220390867
    Abstract: An electrostatic image developing toner includes a toner particle including a binder resin and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies conditions (A) and (B) below: Condition (A): plural domains of the release agent, the domains having a diameter equal to 10% or more and 35% or less of the maximum diameter of the toner particle, are present in the toner particle; and Condition (B): the average of the distances between the centers of gravity of the domains of the release agent is 35% or more and 60% or less of the maximum diameter of the toner particle.
    Type: Application
    Filed: October 6, 2021
    Publication date: December 8, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi SUGAWARA, Satoshi MIURA, Daisuke NOGUCHI, Yoshimasa FUJIHARA, Shintaro ANNO
  • Publication number: 20220390753
    Abstract: A display device configured to be used in a state of being fixed to a head of a user, includes: a camera; a display configured to display a part of an image captured by the camera as a display range; an orientation detection sensor configured to detect an orientation of the display device; a line-of-sight detection sensor configured to detect a line-of-sight of the user to the display; and a processor configured not to control a position of the display range based on the line-of-sight detected by the line-of-sight detection sensor in a case where a change amount of the orientation detected by the orientation detection sensor is smaller than a predetermined amount, and to control the position of the display range based on the line-of-sight in a case where the change amount of the orientation is larger than the predetermined amount.
    Type: Application
    Filed: August 5, 2020
    Publication date: December 8, 2022
    Inventors: Takuya Sakamaki, Tatsuya Hanayama, Atsushi Sugawara, Kaori Tomura, Yosuke Fukai, Yusuke Toriumi
  • Publication number: 20220390865
    Abstract: An electrostatic image developing toner includes a toner particle including a binder resin and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies a condition (A1) below: Condition (A1): the toner particle includes one or more domains of the release agent, the one or more domains having a diameter equal to 8% or more and 30% or less of the maximum diameter of the toner particle, the one or more domains having a geometric center at a depth of R/2 or less below the surface of the toner particle, where R represents the distance between the geometric center of the toner particle and the surface of the toner particle, the one or more domains being entirely included in an inside portion of the toner particle which extends below a depth of 50 nm from the surface of the toner particle.
    Type: Application
    Filed: October 27, 2021
    Publication date: December 8, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi SUGAWARA, Yoshimasa FUJIHARA, Shintaro ANNO, Satoshi MIURA, Daisuke NOGUCHI
  • Publication number: 20220382176
    Abstract: An electrostatic image developing toner includes a toner particle including an amorphous resin, a crystalline resin, and a release agent. When a cross section of the toner particle is observed, the toner particle satisfies conditions (A1) and (B1) below: Condition (A1): one or more domains of the crystalline resin, the domains having a diameter equal to 10% or more and 40% or less of the maximum diameter of the toner particle, are present in the toner particle, and Condition (B1): one or more domains of the release agent, the domains having a diameter equal to 10% or more and 40% or less of the maximum diameter of the toner particle, are present in the toner particle.
    Type: Application
    Filed: October 8, 2021
    Publication date: December 1, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi SUGAWARA, Yoshimasa Fujihara, Daisuke Noguchi, Shintaro Anno, Satoshi Miura
  • Publication number: 20220382177
    Abstract: An electrostatic charge image developing toner includes a toner particle that contains a binder resin having an acid value of 5 mgKOH/g or more and 25 mgKOH/g or less, and a pigment having an isoindoline skeleton, in which a total Net intensity NA of an alkali metal and an alkaline earth metal, which is measured by fluorescent X-ray analysis, in the toner particle is 1.50 kcps or more and 4.00 kcps or less.
    Type: Application
    Filed: October 13, 2021
    Publication date: December 1, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Satoshi MIURA, Yoshimasa FUJIHARA, Atsushi SUGAWARA, Shintaro ANNO, Daisuke NOGUCHI
  • Publication number: 20220382178
    Abstract: An electrostatic image developing toner includes a toner particle including a binder resin and a colorant. The net intensity NS of sulfur included in the toner particle and the total net intensity NA of an alkali metal and an alkaline-earth metal included in the toner particle, which are measured by X-ray fluorescence analysis, satisfy 1.0<NS/NA<22.0.
    Type: Application
    Filed: October 29, 2021
    Publication date: December 1, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Daisuke NOGUCHI, Yoshimasa FUJIHARA, Atsushi SUGAWARA, Shintaro ANNO, Satoshi MIURA
  • Patent number: 11516408
    Abstract: An image capturing apparatus comprises an image sensor, a drive control unit for the image sensor, and a detection unit configured to calculate an evaluation value based on second images and detect flicker based on the evaluation value. The drive control unit controls to perform, during a live view cycle of a display device, a first operation for reading out a first image to be displayed, and a second operation for reading out the second images at a second cycle which is shorter than the time taken to read out the first image at timings different from a timing of reading out the first image. Upon calculating the evaluation value based on the second images, the detection unit detects flicker by using different pairs of images from among the second images for calculation of the evaluation value according to the first cycle.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: November 29, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Sugawara, Hinako Nakamura
  • Publication number: 20220373903
    Abstract: An electrostatic charge image developing toner includes a toner particle containing a binder resin and a releasing agent, and the following requirement (1) is satisfied in cross section observation of the toner particle: requirement (1): the number of a releasing agent domain having a long diameter of 500 nm or more and 1,000 nm or less is 7 or more on average per toner particle.
    Type: Application
    Filed: August 12, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi SUGAWARA, Hiroshi NAKAZAWA
  • Publication number: 20220373915
    Abstract: An electrostatic charge image developing toner includes: a toner particle containing a binder resin; and an external additive containing alumina particles having a volume average particle diameter of more than 5 nm and 80 nm or less and silica particles having a volume average particle diameter of 10 nm or more and 90 nm or less, and in the toner particle, a Net intensity NA of a total of an alkali metal element and an alkaline earth metal element, measured by fluorescence X-ray analysis, is 0.10 kcps or more and 1.30 kcps or less, and a ratio (Ws/Wa) of a content Ws of the silica particles to a content Wa of the alumina particles is more than 0.5 and less than 35.
    Type: Application
    Filed: August 12, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Shintaro ANNO, Yoshimasa FUJIHARA, Atsushi SUGAWARA, Daisuke NOGUCHI, Satoshi MIURA
  • Publication number: 20220373904
    Abstract: An electrostatic charge image developing toner includes: a toner particle containing a binder resin; and an external additive including a silica particle having a circularity of more than 0.5 and. 0.9 or less and a volume average particle diameter of more than 100 nm and 300 nm or less, in which a total Net intensity NA of an alkali metal element and an alkaline earth metal element in the toner particle measured by fluorescence X-ray analysis is 0.10 kcps or more and 1.20 kcps or less.
    Type: Application
    Filed: August 24, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Shintaro ANNO, Yoshimasa FUJIHARA, Atsushi SUGAWARA, Daisuke NOGUCHI, Satoshi MIURA
  • Publication number: 20220373907
    Abstract: A toner for developing an electrostatic charge image contains toner particles containing at least one binder resin, a release agent, and a coloring agent, and a cross-sectional image of the toner particles meets requirements (1) and (2): requirement (1), an average of ten or more domains, per toner particle, of the release agent have an area of 0.5% or more and 5.0% or less of the area of the toner particle; requirement (2), in a Voronoi tessellation generated from the centroids of the domains of the coloring agent, the mean area of the Voronoi cells is 0.020 ?m2 or more and 0.060 ?m2 or less, and the standard deviation of the areas of the Voronoi cells is 0.010 ?m2 or less.
    Type: Application
    Filed: August 18, 2021
    Publication date: November 24, 2022
    Applicant: FUJIFILM BUSINESS INNOVATION CORP.
    Inventors: Daisuke NOGUCHI, Atsushi SUGAWARA, Kazuhiko NAKAMURA, Hiroshi NAKAZAWA
  • Publication number: 20220337736
    Abstract: An apparatus comprises a sensor configured to capture a subject; and a control unit configured to perform exposure control for when capturing a subject using the sensor by adjusting at least an accumulation period, a diameter of an aperture of a diaphragm, and an image capturing sensitivity, wherein the control unit, in a case of capturing a subject to obtain an image for detection, which is an image for detecting a flicker by using the sensor, performs exposure control by prioritizing increasing an image capturing sensitivity and opening the aperture of the diaphragm rather than increasing an accumulation period of the sensor.
    Type: Application
    Filed: April 13, 2022
    Publication date: October 20, 2022
    Inventor: Atsushi Sugawara
  • 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: 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: 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