Patents by Inventor Ryosuke Fujii

Ryosuke Fujii 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: 11016404
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: May 25, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tomoya Sasaki, Masahiro Iwasaki, Ryosuke Fujii, Wataru Yamada, Takahiro Ishizuka
  • Publication number: 20210151237
    Abstract: A reactor device includes a coil, a magnetic core having the coil thereon, a case accommodating the coil and the magnetic core, a cooling plate fixed to the case, an insulating sheet disposed between the coil and the cooling plate, a compressible graphite sheet disposed between the coil and the cooling plate, and a screw to fix the cooling plate to the case. The case has a screw hole and an opening provided therein. The screw passes through the screw hole to fix the cooling plate to the case. The coil contacts the insulating sheet through the opening of the case. The graphite sheet contacts the cooling plate. The reactor has high cooling performance and reliability.
    Type: Application
    Filed: December 17, 2018
    Publication date: May 20, 2021
    Inventors: TAKESHI FUJII, RYOSUKE USUI, CHIHIRO SATOU
  • Patent number: 10991745
    Abstract: A semiconductor device including a device substrate and a readout circuit substrate. The device substrate includes a device region and a peripheral region. In the device region, a wiring layer and a first semiconductor layer including a compound semiconductor material are stacked. The peripheral region is disposed outside the device region. The readout circuit substrate faces the first semiconductor layer with the wiring layer in between, and is electrically coupled to the first semiconductor layer through the wiring layer. The peripheral region of the device substrate has a junction surface with the readout circuit substrate.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: April 27, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Suguru Saito, Nobutoshi Fujii, Ryosuke Matsumoto, Yoshifumi Zaizen, Shuji Manda, Shunsuke Maruyama, Hideo Shimizu
  • Publication number: 20210088918
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-containing resin particle and a fluorine-based graft polymer having a fluorinated alkyl group. A ratio of an amount of a fluorine-based graft polymer separated from the fluorine-containing resin particle to a total amount of the fluorine-based graft polymer in the outermost surface layer is 15% or less.
    Type: Application
    Filed: January 16, 2020
    Publication date: March 25, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Keisuke KUSANO, Wataru YAMADA, Masahiro IWASAKI, Ryosuke FUJII, Yuto OKAZAKI, Taisuke FUKUI
  • Publication number: 20210080843
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.
    Type: Application
    Filed: January 20, 2020
    Publication date: March 18, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Masahiro IWASAKI, Ryosuke FUJII, Wataru YAMADA, Takahiro ISHIZUKA
  • Publication number: 20210059579
    Abstract: A pretreatment method and an in-vivo component measuring device in which problems caused by bubbles is suppressed is provided. The pretreatment method uses an electrode sensor 21 for measuring a measurement target component contained in a measurement sample collected from a subject, and a liquid used for pretreatment of measurement, the pretreatment includes step (A) for forming a droplet 8 of liquid, step (B) for pressing the droplet 8 of liquid onto the surface of the electrode type sensor 21 by relative movement of the droplet 8 of liquid and the electrode type sensor 21, and step (C) for removing the droplet 8 pressed against the surface of the expression sensor 21.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 4, 2021
    Inventors: Takumi INUTSUKA, Ryosuke FUJII, Toshikuni SUGANUMA
  • Patent number: 10890854
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R10, R11, R20 or R21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X1 and X2 each independ
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 12, 2021
    Assignee: FUJI XEROX CO.. LTD.
    Inventors: Masahiro Iwasaki, Ryosuke Fujii, Kenji Kajiwara, Wataru Yamada
  • Publication number: 20200257212
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains fluorine-containing resin particles and a fluorine-containing graft polymer having a fluorinated alkyl group. In an infrared absorption spectrum of the fluorine-containing graft polymer, a ratio of a peak area in a wavenumber range of from 1,020 cm?1 to 1,308 cm?1 to a peak area in a wavenumber range of from 1,673 cm?1 to 1,779 cm?1 is 2.7 or more and 4.8 or less.
    Type: Application
    Filed: July 17, 2019
    Publication date: August 13, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Wataru Yamada, Ryosuke Fujii, Keisuke Kusano, Taisuke Fukui, Yuto Okazaki
  • Publication number: 20200257210
    Abstract: A fluorine-containing resin particle contains 0 or more and 30 or less carboxyl groups per 106 carbon atoms and 0 ppm or more and 3 ppm or less of a basic compound.
    Type: Application
    Filed: December 2, 2019
    Publication date: August 13, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru YAMADA, Masahiro Iwasaki, Ryosuke Fujii, Keisuke Kusano, Yuto Okazaki, Taisuke Fukui
  • Patent number: 10732168
    Abstract: Provided are a cell imaging device and a cell imaging method that can shorten the time period of taking images of cells in a liquid sample, compared with conventional techniques. This cell imaging device introduces a urine sample containing cells into an internal space of a sample cell, moves at least one of the sample cell and an objective lens in a second direction while at least one of the sample cell and the objective lens is moved in a first direction, the second direction being different from the first direction, and takes, at a plurality of imaging positions, images of cells contained in the urine sample by means of an imaging unit.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 4, 2020
    Assignee: SYSMEX CORPORATION
    Inventors: Masakazu Fukuda, Masamichi Tanaka, Yanyan Liu, Ryosuke Fujii, Takumi Inutsuka, Tomoyuki Tsukahara
  • Patent number: 10705441
    Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: July 7, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Ryosuke Fujii, Wataru Yamada, Masahiro Iwasaki, Keisuke Kusano, Taisuke Fukui, Yuto Okazaki
  • Patent number: 10663897
    Abstract: A fixing member includes a substrate, an elastic layer on the substrate, and a surface layer on the elastic layer. The surface layer has transverse microhardness values within the range of 85 to 89, inclusive, and a transverse filtered maximum waviness (Wcm) of 0.1 ?m or more and 4 ?m or less.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 26, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takuro Hoshio, Ryosuke Fujii, Kenji Omori, Jun Kimura
  • Patent number: 10641386
    Abstract: In an automatic transmission control device of the invention configured to start an increase in engagement pressure of a start-up engagement element, when a determination threshold value for determining that a turbine rotational speed has reduced is reached or exceeded, the determination threshold value when a selection operation from a non-traveling range to a traveling range is made before a prescribed period of time from starting of an engine has elapsed, is increased and set greater than the determination threshold value when the selection operation is made after the prescribed period of time has elapsed. Accordingly, a reduction in the turbine rotational speed can be accurately determined, and thus it is possible to suppress torque fluctuations, occurring owing to engagement of a second brake, which is the start-up engagement element.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 5, 2020
    Assignee: JATCO LTD
    Inventors: Ryosuke Fujii, Hiroaki Shiokawa
  • Publication number: 20200033744
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R10, R11, R20 or R21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X1 and X2 each independ
    Type: Application
    Filed: October 3, 2019
    Publication date: January 30, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Ryosuke Fujii, Kenji Kajiwara, Wataru Yamada
  • Publication number: 20200026229
    Abstract: A fixing member includes a substrate, an elastic layer on the substrate, and a surface layer on the elastic layer. The surface layer has transverse microhardness values within the range of 85 to 89, inclusive, and a transverse filtered maximum waviness (Wcm) of 0.1 ?m or more and 4 ?m or less.
    Type: Application
    Filed: January 31, 2019
    Publication date: January 23, 2020
    Applicant: FUJI XEROX CO.,LTD.
    Inventors: Takuro HOSHIO, Ryosuke FUJII, Kenji OMORI, Jun KIMURA
  • Patent number: 10514621
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R10, R11, R20, or R21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X1 and X2 each indepen
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: December 24, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Iwasaki, Ryosuke Fujii, Kenji Kajiwara, Wataru Yamada
  • Patent number: 10459389
    Abstract: Conventionally, it has been impossible to adjust a transportation direction magnification correspondingly to jobs, causing an image to be formed in an unintended size, while the transportation direction magnification for the image formed on the sheet varies with jobs. A controller included in an image forming apparatus selects an image adjustment chart used to adjust a transportation direction magnification that varies with job conditions of a job to be executed currently in a transportation direction of images transferred to sheets by a transferrer. The controller adjusts the transportation direction magnification for images formed by an image former based on the image adjustment chart formed on a sheet by the image former.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: October 29, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Ryosuke Fujii
  • Publication number: 20190317415
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a photosensitive layer provided on the conductive substrate; and an undercoating layer that is provided between the conductive substrate and the photosensitive layer and includes a charge transport material containing at least one of imide compounds represented by Formula (1) or (2): (in Formulas (1) and (2), R10, R11, R20, or R21 independently represents a group represented by Formula (3) or (4) where X represents a monovalent organic group having at least one of an alkyl group, an alkylene group, an ether group, an ester group, and a keto group, a halogen atom, a nitro group, an aralkyl group, or an aryl group, Y represents a sulfur atom or an oxygen atom, n represents an integer of 0 to 2, and when n represents 2, two X's may be the same or different), and an imide compound is represented by Formula (1A) where Ar represents an aromatic group having 6 to 18 carbon atoms except for a tetravalent perylene group, X1 and X2 each indepen
    Type: Application
    Filed: August 6, 2018
    Publication date: October 17, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro IWASAKI, Ryosuke FUJII, Kenji KAJIWARA, Wataru YAMADA
  • Publication number: 20190278209
    Abstract: Conventionally, it has been impossible to adjust a transportation direction magnification correspondingly to jobs, causing an image to be formed in an unintended size, while the transportation direction magnification for the image formed on the sheet varies with jobs. A controller included in an image forming apparatus selects an image adjustment chart used to adjust a transportation direction magnification that varies with job conditions of a job to be executed currently in a transportation direction of images transferred to sheets by a transferrer. The controller adjusts the transportation direction magnification for images formed by an image former based on the image adjustment chart formed on a sheet by the image former.
    Type: Application
    Filed: January 18, 2019
    Publication date: September 12, 2019
    Inventor: RYOSUKE FUJII
  • Patent number: 10195135
    Abstract: The present invention relates to an organopolysiloxane graft polymer including an organopolysiloxane segment as a main chain thereof and an unsaturated monomer-derived copolymer segment containing a repeating unit derived from an unsaturated monomer containing a carboxylic acid or a carboxylic acid salt as a side chain thereof, in which a content of the organopolysiloxane segment in the organopolysiloxane graft polymer is 35 to 59% by mass, a content of the repeating unit derived from the unsaturated monomer containing a carboxylic acid or a carboxylic acid salt in the organopolysiloxane graft polymer is 4 to 17% by mass, and a content of a repeating unit derived from an unsaturated monomer whose homopolymer has a glass transition point of not lower than 150° C.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: February 5, 2019
    Assignee: KAO CORPORATION
    Inventors: Satomi Nakazono, Ryosuke Fujii