Patents by Inventor Naoya Kamimura

Naoya Kamimura 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: 11022912
    Abstract: In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: June 1, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura
  • Patent number: 11016410
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: May 25, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Publication number: 20210149325
    Abstract: A toner cartridge includes a first casing, a second casing, an auger screw, and a shutter. The first casing has a first internal space. The second casing has: a second internal space smaller than the first internal space; a first opening allowing toner in the second internal space to be discharged; and a second opening allowing air in the second internal space to be sent to an outside. The auger screw is rotatable about a first rotation axis and configured to convey toner in the first internal space to the second internal space. The shutter is rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening. In a state where the shutter is at the second position, the shutter does not close the second opening.
    Type: Application
    Filed: January 26, 2021
    Publication date: May 20, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki FURUKAWA, Kazuma HINOUE, Ryosuke HAYASHI, Naoya KAMIMURA
  • Publication number: 20210141336
    Abstract: An image forming apparatus includes a controller, a drum cartridge and a toner cartridge. The controller is configured to perform determining a value of a first initial developing bias for a first toner cartridge based on a cumulative number of drum rotations that is stored in a drum memory of the drum cartridge at the time when the cumulative dot count stored in the toner memory of the first toner cartridge is equal to zero. After determining the first initial developing bias, the controller is configured to perform determining a value of a second initial developing bias for a second toner cartridge based on the cumulative number of drum rotations that is stored in the drum memory at the time when the cumulative dot count stored in the toner memory of the second toner cartridge is equal to zero.
    Type: Application
    Filed: January 19, 2021
    Publication date: May 13, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shunji YOSHIMOTO, Naoya KAMIMURA, Masashi IMAI, Masaki UEJI, Keita HIRONAKA, Hotaka KAKUTANI
  • Patent number: 10983456
    Abstract: A developer cartridge may include: a first gear having a small-diameter gear portion and a large-diameter gear portion; and a second gear including: a first columnar portion centered on a second axis; a second columnar portion having a smaller diameter than the first columnar portion; a first engagement portion extending along a portion of a peripheral surface of the first columnar portion and engageable with the small-diameter gear portion; a second engagement portion extending along a portion of a peripheral surface of the second columnar portion and positioned closer to a housing than the first engagement portion in an axial direction and engageable with the large-diameter gear portion; and a protruding portion protruding in the axial direction and rotatable together with the first engagement portion and the second engagement portion. The second engagement portion may engage the large-diameter gear portion after the first engagement portion engages the small-diameter gear portion.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: April 20, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Takashi Shimizu, Hideshi Nishiyama, Naoya Kamimura, Tomonori Watanabe
  • Publication number: 20210080904
    Abstract: A drum cartridge includes: a drum frame to which a developing cartridge is attachable; a photosensitive drum; and a first storage medium. The drum frame has one end portion and another end portion spaced apart from the one end portion in a first direction. The photosensitive drum is rotatable about a first axis extending in a second direction and is positioned at the one end portion of the drum cartridge. The first storage medium includes a first electrical contact surface. The first storage medium is positioned at an outer surface of the drum frame, the outer surface being exposed in a state where the developing cartridge is attached to the drum frame.
    Type: Application
    Filed: November 27, 2020
    Publication date: March 18, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Koji ABE, Naoya KAMIMURA
  • Publication number: 20210063961
    Abstract: A drum cartridge includes: a drum frame to which a developing cartridge is attachable; a photosensitive drum rotatable about an axis extending in a first direction; a memory having an electrical contact surface; and a resilient member positioned between the electrical contact surface and the drum frame. The resilient member is configured to expand and compress in a second direction crossing the electrical contact surface between a first state and a second state, the resilient member having a shorter length in the second state than in the first state. A distance between the drum frame and the electrical contact surface in the second direction when the resilient member is in the second state is smaller than a distance between the drum frame and the electrical contact surface in the second direction when the resilient member is in the first state.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao ITABASHI, Naoya KAMIMURA
  • Publication number: 20210055671
    Abstract: A developer cartridge may include: a first gear having a small-diameter gear portion and a large-diameter gear portion; and a second gear including: a first columnar portion centered on a second axis; a second columnar portion having a smaller diameter than the first columnar portion; a first engagement portion extending along a portion of a peripheral surface of the first columnar portion and engageable with the small-diameter gear portion; a second engagement portion extending along a portion of a peripheral surface of the second columnar portion and positioned closer to a housing than the first engagement portion in an axial direction and engageable with the large-diameter gear portion; and a protruding portion protruding in the axial direction and rotatable together with the first engagement portion and the second engagement portion. The second engagement portion may engage the large-diameter gear portion after the first engagement portion engages the small-diameter gear portion.
    Type: Application
    Filed: November 5, 2020
    Publication date: February 25, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita SHIMIZU, Takashi SHIMIZU, Hideshi NISHIYAMA, Naoya KAMIMURA, Tomonori WATANABE
  • Patent number: 10928748
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: February 23, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Patent number: 10921732
    Abstract: In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: February 16, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura
  • Patent number: 10915064
    Abstract: An image forming apparatus includes a controller, a drum cartridge and a toner cartridge. The controller is configured to perform determining a value of a first initial developing bias for a first toner cartridge based on a cumulative number of drum rotations that is stored in a drum memory of the drum cartridge at the time when the cumulative dot count stored in the toner memory of the first toner cartridge is equal to zero. After determining the first initial developing bias, the controller is configured to perform determining a value of a second initial developing bias for a second toner cartridge based on the cumulative number of drum rotations that is stored in the drum memory at the time when the cumulative dot count stored in the toner memory of the second toner cartridge is equal to zero.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: February 9, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shunji Yoshimoto, Naoya Kamimura, Masashi Imai, Masaki Ueji, Keita Hironaka, Hotaka Kakutani
  • Patent number: 10908533
    Abstract: A toner cartridge includes a first casing, a second casing, an auger screw, and a shutter. The first casing has a first internal space. The second casing has: a second internal space smaller than the first internal space; a first opening allowing toner in the second internal space to be discharged; and a second opening allowing air in the second internal space to be sent to an outside. The auger screw is rotatable about a first rotation axis and configured to convey toner in the first internal space to the second internal space. The shutter is rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening. In a state where the shutter is at the second position, the shutter does not close the second opening.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: February 2, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki Furukawa, Kazuma Hinoue, Ryosuke Hayashi, Naoya Kamimura
  • Publication number: 20210026277
    Abstract: In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao ITABASHI, Naoya KAMIMURA
  • 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
  • Patent number: 10859972
    Abstract: A drum cartridge includes: a drum frame to which a developing cartridge is attachable; a photosensitive drum; and a first storage medium. The drum frame has one end portion and another end portion spaced apart from the one end portion in a first direction. The photosensitive drum is rotatable about a first axis extending in a second direction and is positioned at the one end portion of the drum cartridge. The first storage medium includes a first electrical contact surface. The first storage medium is positioned at an outer surface of the drum frame, the outer surface being exposed in a state where the developing cartridge is attached to the drum frame.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: December 8, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Koji Abe, Naoya Kamimura
  • Patent number: 10831129
    Abstract: A developer cartridge may include: a first gear having a small-diameter gear portion and a large-diameter gear portion; and a second gear including: a first columnar portion centered on a second axis; a second columnar portion having a smaller diameter than the first columnar portion; a first engagement portion extending along a portion of a peripheral surface of the first columnar portion and engageable with the small-diameter gear portion; a second engagement portion extending along a portion of a peripheral surface of the second columnar portion and positioned closer to a housing than the first engagement portion in an axial direction and engageable with the large-diameter gear portion; and a protruding portion protruding in the axial direction and rotatable together with the first engagement portion and the second engagement portion. The second engagement portion may engage the large-diameter gear portion after the first engagement portion engages the small-diameter gear portion.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: November 10, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Takashi Shimizu, Hideshi Nishiyama, Naoya Kamimura, Tomonori Watanabe
  • Publication number: 20200348614
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Publication number: 20200348617
    Abstract: In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.
    Type: Application
    Filed: July 16, 2020
    Publication date: November 5, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao ITABASHI, Naoya KAMIMURA
  • Publication number: 20200310295
    Abstract: A toner cartridge includes a first casing, a second casing, an auger screw, and a shutter. The first casing has a first internal space. The second casing has: a second internal space smaller than the first internal space; a first opening allowing toner in the second internal space to be discharged; and a second opening allowing air in the second internal space to be sent to an outside. The auger screw is rotatable about a first rotation axis and configured to convey toner in the first internal space to the second internal space. The shutter is rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening. In a state where the shutter is at the second position, the shutter does not close the second opening.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 1, 2020
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masaaki FURUKAWA, Kazuma HINOUE, Ryosuke HAYASHI, Naoya KAMIMURA