Patents by Inventor Ryuya Yamazaki

Ryuya Yamazaki 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: 20210223737
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 22, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10901361
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 26, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Publication number: 20200225613
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: March 25, 2020
    Publication date: July 16, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10620580
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: April 14, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Publication number: 20190332052
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: May 10, 2019
    Publication date: October 31, 2019
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10303112
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: May 28, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10228650
    Abstract: An image forming apparatus includes: an apparatus body; a photosensitive drum defining an axis extending in a first direction; a support member movable between an inside position and an outside position relative to the apparatus body; a cleaner for removing waste toner from the photosensitive drum; a first conveyer for conveying the waste toner in the first direction; a conveying unit; and a container for storing the waste toner conveyed by the conveying unit. The conveying unit includes a second conveyer for conveying the waste toner conveyed by the first conveyer in a second direction intersecting with the first direction; and a conveying pipe accommodating the second conveyer and connectable to the container. The conveying pipe includes a shutter for opening and closing a conveyer-side opening formed in a downstream end portion of the conveying pipe in the second direction.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: March 12, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Publication number: 20180321632
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10061258
    Abstract: A drum unit includes a photosensitive drum, a side plate, a cleaning unit, a waste-toner conveyor unit. The photosensitive drum has a first drum body and a second drum body, each having a photosensitive layer and a supported portion extending from one end of the drum body in a first direction along a rotational axis of the photosensitive drum. The side plate supports the supported portions. The cleaning unit has cleaners and conveyors corresponding to the drum bodies so as to remove waste toner from the photosensitive drums and convey the waste toner removed by the cleaners in the first direction. The waste-toner conveyor unit has a collecting conveyor configured to convey the waste toner conveyed by the. The collecting conveyor is disposed between the side plate and the drum bodies. The collecting conveyor is disposed below the first conveyor.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: August 28, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Patent number: 10048645
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 14, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Publication number: 20180129159
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: January 10, 2018
    Publication date: May 10, 2018
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 9964915
    Abstract: An image forming apparatus includes a body casing, a drum unit movable between an inside position and an outside position, and a waste toner storage unit. The drum unit includes a photosensitive drum, a cleaning unit configured to remove toner remaining on a surface of the photosensitive drum, a conveying unit including a conveying member to convey the toner in a moving direction of the drum unit, and a conveying tube that can accommodate the conveying member and having a discharging outlet through which the toner is discharged to the waste toner storage unit. Moreover, the conveying tube includes a first conveying tube extending in the moving direction and accommodating the conveying member, and a second conveying tube connectable to the first conveying tube and extending in a direction intersecting with a direction in which the first conveying tube extends.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 8, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Patent number: 9910381
    Abstract: An image-forming apparatus includes a first photosensitive member, a second photosensitive member, an exposure unit, a first developing unit and a second developing unit. The first developing unit includes a first developing roller, a first casing and a first thickness-regulating blade having a first base end and a first free end. The second developing unit includes a second developing roller, a second casing and a second thickness-regulating blade having a second base end and a second free end. The first thickness-regulating blade is disposed between the first developing roller and the exposure unit, or between the first developing roller and a first optical axis of the light to which the first photosensitive member is exposed. The first thickness-regulating blade extends from the first base end to the first free end in a following direction with respect to a moving direction of a peripheral surface of the first developing roller.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: March 6, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Ryuya Yamazaki, Naoya Kamimura
  • Patent number: 9891581
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: February 13, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 9829853
    Abstract: An image forming apparatus, comprising: a body casing; a drum unit; a belt unit; and a waste toner storage unit, the drum unit comprising: a photosensitive drum; a cleaning unit; and a conveying unit configured to convey toner removed by the cleaning unit, the belt unit comprising: a belt and a unit electric contact, the conveying unit comprises: a conveying member to convey the toner removed by the cleaning unit in a moving direction of the drum unit; and a conveying tube having a discharging outlet configured to let toner carried by the conveying member be discharged to the waste toner storage unit, wherein the discharging outlet is disposed on a downstream side with respect to a body electric contact in a direction pointing from an inside position to an outside position of the drum unit in a state where the drum unit is disposed at the inside position.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: November 28, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Yoshiyuki Okazaki, Ryosuke Sakai, Takamasa Tsukada, Ryuya Yamazaki
  • Patent number: 9804553
    Abstract: An image forming apparatus includes a drum unit movable between an inside position inside a main body casing and an outside position outside the main body casing. The drum unit includes a photoconductive drum extending in an axial direction intersecting a moving direction of the drum unit from the outside position toward the inside position, and a transporter transporting toner removed by a cleaner toward a waste toner container. The transporter includes a transportation member transporting the toner along the moving direction, a transportation tube accommodating the transportation member and having an outlet, and a shutter movable between a closed position to close the outlet and an open position to open the outlet. The shutter includes a protruding section protruding along the axial direction from a shutter main body when the shutter is in the closed position, the protruding section being upstream of the photoconductive drum in the moving direction.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: October 31, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Patent number: 9760058
    Abstract: An image forming apparatus includes a housing and a drum unit. The drum unit is out of the housing at a first position, moved in a first direction from the first position to a second position in the housing, and then to a third position away from the first position. The drum unit includes: a photosensitive drum; a cleaning unit for toner; a conveying tube extending in the first direction; a conveying member in the conveying tube and rotatable about a first axis extending in the first direction; and a first gear fixed to the conveying member and rotatable about the first axis. The housing has a second gear rotatable about a second axis extending in the first direction. The first gear is separated from the second gear at the second position, and engaged with the second gear at the third position. The first axis and the second axis overlap in the third position.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 12, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Patent number: 9760056
    Abstract: An image forming apparatus includes a main body casing, a waste toner container, and a drum unit configured to move between a first position inside the main body casing and a second position outside the main body casing, the drum unit including a photoconductive drum, a cleaner, and a transporter including a first transportation member, and a transportation tube including a first frame including a first half-tubular section and a tubular section, and a second frame including a second half-tubular section. The first half-tubular section and the second half-tubular section define a first space configured to allow toner removed by the cleaner to pass therethrough. The tubular section of the first frame defines a second space configured to allow the toner passed through the first space to pass therethrough.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 12, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Publication number: 20170227916
    Abstract: An image forming apparatus includes a body casing, a drum unit movable between an inside position and an outside position, and a waste toner storage unit. The drum unit includes a photosensitive drum, a cleaning unit configured to remove toner remaining on a surface of the photosensitive drum, a conveying unit including a conveying member to convey the toner in a moving direction of the drum unit, and a conveying tube that can accommodate the conveying member and having a discharging outlet through which the toner is discharged to the waste toner storage unit. Moreover, the conveying tube includes a first conveying tube extending in the moving direction and accommodating the conveying member, and a second conveying tube connectable to the first conveying tube and extending in a direction intersecting with a direction in which the first conveying tube extends.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Inventors: Junichi Hashimoto, Ryuya Yamazaki
  • Patent number: 9696682
    Abstract: An image forming apparatus, comprising: a body casing, a drum unit movable between an inside position and an outside position, and a waste toner storage unit, and wherein the drum unit comprises a photosensitive drum, a cleaning unit to remove toner remaining on a surface of the photosensitive drum, and a conveying unit including a conveying member to convey the toner in a moving direction of the drum unit, and a conveying tube to accommodate the conveying member and to have a discharging outlet through which the toner is discharged to the waste toner storage unit, and wherein the conveying tube comprises: a first conveying tube to extend in the moving direction and to accommodate the conveying member, and a second conveying tube to be connected to the first conveying tube and to extend in a direction intersecting with a direction in which the first conveying tube extends.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 4, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Junichi Hashimoto, Ryuya Yamazaki