Patents by Inventor Mitsuyoshi Arakawa

Mitsuyoshi Arakawa 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: 12254598
    Abstract: An information processing apparatus divides a plurality of objects into objects of interest and objects of non-interest, and generates a projection image of the objects of non-interest integrated into one image and a projection image of the objects of interest. The information processing apparatus composes the projection image of the objects of interest and the projection image of the objects of non-interest, and displays a resultant composed image on a display device.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: March 18, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventor: Mitsuyoshi Arakawa
  • Patent number: 12135513
    Abstract: An image forming apparatus includes a cartridge, including a photosensitive drum and a cleaning member, and an apparatus main body to and from which the cartridge and a toner container are independently attached and detached The apparatus main body includes a toner conveying apparatus receive toner removed from the cartridge and convey the removed toner to the toner container. The toner conveying apparatus includes a first conveying portion to convey the removed toner received from the cartridge toward the toner container, and a second conveying portion to convey the removed toner conveyed by the first conveying portion to the toner container.
    Type: Grant
    Filed: August 1, 2023
    Date of Patent: November 5, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsukasa Abe, Fumihiko Yamaya, Mitsuyoshi Arakawa, Takashi Kuwata, Shinichi Ueda
  • Publication number: 20230375962
    Abstract: A toner conveying apparatus includes: a first conveying portion to convey the toner, the first conveying portion having a first screw that is rotatable, and a first conveying passage forming member that forms a first conveying space so as to surround the first screw; and a second conveying portion to convey upward the toner from the first conveying portion, the second conveying portion having a second screw that is rotatable, and a second conveying passage forming member that forms a second conveying space so as to surround the second screw and that includes a connecting portion. The first conveying space includes a first region and a second region that is closer to the connecting portion than the first region is, and a cross-sectional area of the first conveying space is smaller in the second region than in the first region.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 23, 2023
    Inventors: Tsukasa Abe, Fumihiko Yamaya, Mitsuyoshi Arakawa, Takashi Kuwata, Shinichi Ueda
  • Patent number: 11782361
    Abstract: A toner conveying apparatus conveying toner used for image forming includes a first conveying portion to convey the toner and having a first screw and a first conveying passage forming member that forms a first conveying space, and a second conveying portion to convey upward the toner and including a second screw and a second conveying passage forming member that forms a second conveying space. The second conveying passage forming member has a connecting port connected to the first conveying passage forming member. The second screw overlaps with the first screw viewed in a direction of a rotational axial line of the first rotation shaft. A cross-sectional area of the first conveying space orthogonal to the direction of the rotation axial line in a second region is smaller than the cross-sectional area of the first conveying space orthogonal to the direction of the rotational axial line in a first region.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: October 10, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsukasa Abe, Fumihiko Yamaya, Mitsuyoshi Arakawa, Takashi Kuwata, Shinichi Ueda
  • Publication number: 20230125752
    Abstract: An information processing apparatus divides a plurality of objects into objects of interest and objects of non-interest, and generates a projection image of the objects of non-interest integrated into one image and a projection image of the objects of interest. The information processing apparatus composes the projection image of the objects of interest and the projection image of the objects of non-interest, and displays a resultant composed image on a display device.
    Type: Application
    Filed: October 26, 2022
    Publication date: April 27, 2023
    Inventor: Mitsuyoshi Arakawa
  • Publication number: 20220197189
    Abstract: A toner conveying apparatus includes: a first conveying portion to convey the toner, the first conveying portion having a first screw that is rotatable, and a first conveying passage forming member that forms a first conveying space so as to surround the first screw; and a second conveying portion to convey upward the toner from the first conveying portion, the second conveying portion having a second screw that is rotatable, and a second conveying passage forming member that forms a second conveying space so as to surround the second screw and that includes a connecting portion. The first conveying space includes a first region and a second region that is closer to the connecting portion than the first region is, and a cross-sectional area of the first conveying space is smaller in the second region than in the first region.
    Type: Application
    Filed: March 9, 2022
    Publication date: June 23, 2022
    Inventors: Tsukasa Abe, Fumihiko Yamaya, Mitsuyoshi Arakawa, Takashi Kuwata, Shinichi Ueda
  • Patent number: 11300901
    Abstract: A toner conveying apparatus conveying toner used for image forming includes a first conveying portion to convey the toner and having a first screw and a first conveying passage forming member that forms a first conveying space, and a second conveying portion to convey upward the toner and including a second screw and a second conveying passage forming member that forms a second conveying space. The second conveying passage forming member has a connecting port connected to the first conveying passage forming member. The second screw overlaps with the first screw viewed in a direction of a rotational axial line of the first rotation shaft. A cross-sectional area of the first conveying space orthogonal to the direction of the rotation axial line in a second region is smaller than the cross-sectional area of the first conveying space orthogonal to the direction of the rotational axial line in a first region.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: April 12, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tsukasa Abe, Fumihiko Yamaya, Mitsuyoshi Arakawa, Takashi Kuwata, Shinichi Ueda
  • Publication number: 20210149326
    Abstract: A toner conveying apparatus includes: a first conveying portion to convey the toner, the first conveying portion having a first screw that is rotatable, and a first conveying passage forming member that forms a first conveying space so as to surround the first screw ; and a second conveying portion to convey upward the toner from the first conveying portion, the second conveying portion having a second screw that is rotatable, and a second conveying passage forming member that forms a second conveying space so as to surround the second screw and that includes a connecting portion. The first conveying space includes a first region and a second region that is closer to the connecting portion than the first region is, and a cross-sectional area of the first conveying space is smaller in the second region than in the first region.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 20, 2021
    Inventors: Tsukasa Abe, Fumihiko Yamaya, Mitsuyoshi Arakawa, Takashi Kuwata, Shinichi Ueda
  • Patent number: 10642192
    Abstract: A developing device includes a developer carrying member, a first chamber, a second chamber, a first communicating portion, a second communicating portion, and a feeding screw, provided in the second chamber, including a feeding portion having a first helical blade and including a returning portion having a second helical blade in the form of a plurality of threads, the feeding portion and the returning portion being provided so that a boundary portion therebetween opposes the second communicating portion. The first helical blade and the second helical blade satisfy the following relationship: P2?P1, where P1 is a pitch, or lead, of the first helical blade and P2 is a lead of the second helical blade.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: May 5, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Osamu Ariizumi, Shunsuke Tsuda, Mitsuyoshi Arakawa, Masahiro Ootsuka, Fumiyoshi Saito
  • Publication number: 20180335722
    Abstract: A developing device includes a developer carrying member, a first chamber, a second chamber, a first communicating portion, a second communicating portion, and a feeding screw, provided in the second chamber, including a feeding portion having a first helical blade and including a returning portion having a second helical blade in the form of a plurality of threads, the feeding portion and the returning portion being provided so that a boundary portion therebetween opposes the second communicating portion. The first helical blade and the second helical blade satisfy the following relationship: P2?P1, where P1 is a pitch of the first helical blade and P2 is a pitch of the second helical blade.
    Type: Application
    Filed: May 17, 2018
    Publication date: November 22, 2018
    Inventors: Osamu Ariizumi, Shunsuke Tsuda, Mitsuyoshi Arakawa, Masahiro Ootsuka, Fumiyoshi Saito