Patents by Inventor Nao Itabashi

Nao Itabashi 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: 20220253000
    Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 11, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao ITABASHI, Junichi Yokoi
  • Publication number: 20220253003
    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: April 27, 2022
    Publication date: August 11, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao ITABASHI, Naoya KAMIMURA
  • Patent number: 11409210
    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: October 15, 2020
    Date of Patent: August 9, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura
  • Patent number: 11402763
    Abstract: A developing cartridge 1 may include a developing roller including a developing roller shaft, a casing capable of containing a developer material, and a developing electrode or a member configure to be electrically connected to the developing roller shaft. The developing electrode or the member has a first end portion configured to be electrically connected to the developing roller shaft and a second end portion located farther away from the developing roller shaft than the first end portion. The second end portion is farther away in the second direction from the one end of the casing than the first end portion is from the one end of the casing. The developing electrode has a first hole extending in the second direction between the first end portion and the second end portion.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: August 2, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11385571
    Abstract: In a cartridge, a developing roller is configured to rotate around a first rotational axis extending in a predetermined direction and to carry developer thereon, the developing roller having a first end and a second end apart from each other in the predetermined direction, a from-first-to-second direction being defined along the predetermined direction as being directed from the first end to the second end. A developing electrode is formed of a conductive material and is configured to be electrically connected to the developing roller, the developing electrode including a main part and a protruding portion protruding from the main part in the from-first-to-second direction. A detection body is formed of an insulating material and is rotatably supported by the protruding portion, the detection body including a first opening that exposes part of the protruding portion and a covering portion covering part of the protruding portion.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: July 12, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Publication number: 20220197209
    Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 23, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Junichi Yokoi
  • Publication number: 20220187756
    Abstract: An image forming apparatus including a main body casing, a drum cartridge, a developing cartridge, and an intermediate transfer belt. The drum cartridge includes a photosensitive drum, a drum frame, and a first memory. The intermediate transfer belt is positioned above of the drum cartridge and the developing cartridge in a state where the drum cartridge and the developing cartridge are attached to the main body casing. The drum frame includes a first end and a second end being apart from the first end in an up-down direction. The photosensitive drum is positioned at the first end. The first memory is positioned at the second end.
    Type: Application
    Filed: March 4, 2022
    Publication date: June 16, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Junichi YOKOI, Nao ITABASHI
  • Publication number: 20220171331
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Isao KISHI, Nao ITABASHI, Yohei HASHIMOTO, Kouji WATANABE, Makoto SOUDA
  • Publication number: 20220171323
    Abstract: A developing cartridge includes: a developing roller rotatable about an axis extending in a first direction; a casing having a first outer surface and a second outer surface spaced apart from each other in the first direction; a first separation member positioned at the first outer surface; and a second separation member positioned at the second outer surface. The second separation member has a first end portion configured to contact a body-side cam of an image-forming apparatus. In a state where a drum cartridge is attached to an apparatus body of the image-forming apparatus in an attached state of the developing cartridge to the drum cartridge, the first separation member is pressed by a drum cam of the drum cartridge, and the first end portion of the second separation member is pressed by the body-side cam to move the developing roller from a contacting position to a separated position.
    Type: Application
    Filed: November 19, 2021
    Publication date: June 2, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shuhei HATANO, Wataru YAMAGUCHI, Yasuhiro HOSOKAWA, Nao ITABASHI
  • Patent number: 11347162
    Abstract: A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: May 31, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11347176
    Abstract: An image forming apparatus includes a main body casing, a drum cartridge, a developing cartridge and an intermediate transfer belt. The drum cartridge is removably insertable into to the main body casing in a first direction. The developing cartridge is removably insertable into the main body casing in the first direction. The drum cartridge includes a first handle. The first handle has a first recess having a first hollow. The developing cartridge includes a second handle. The second handle has a second recess having a second hollow.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: May 31, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Publication number: 20220128931
    Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.
    Type: Application
    Filed: January 4, 2022
    Publication date: April 28, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao ITABASHI, Junichi Yokoi
  • Patent number: 11294325
    Abstract: An image forming apparatus including a main body casing, a drum cartridge, a developing cartridge, and an intermediate transfer belt. The drum cartridge includes a photosensitive drum, a drum frame, and a first memory. The intermediate transfer belt is positioned above of the drum cartridge and the developing cartridge in a state where the drum cartridge and the developing cartridge are attached to the main body casing. The drum frame includes a first end and a second end being apart from the first end in an up-down direction. The photosensitive drum is positioned at the first end. The first memory is positioned at the second end.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: April 5, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Junichi Yokoi, Nao Itabashi
  • Patent number: 11287761
    Abstract: In an image forming apparatus, a separation mechanism moves a developing roller from a contact position to a separation position. At the contact position a surface of the developing roller is in contact with a surface of a photosensitive drum. At the separation position the surface of the developing roller is separated from the surface of the photosensitive drum. A sensor detects whether the developing roller is at the separation position. A controller executes a transmission process transmitting to the motor a command to drive the separation mechanism, a determination process determining whether or not the sensor detects that the developing roller is positioned at the separation position within a predetermined period of time after the command is transmitted in the transmission process, and a stop process stopping image formation operation in a case where the sensor does not detect that the developing roller is positioned at the separation position.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: March 29, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Publication number: 20220082992
    Abstract: A cartridge includes: a housing; a storage medium having an electrical contact surface; and a holder movable relative to the housing. The holder includes a first holder member and a second holder member movable relative to the first holder member. The first holder member includes at least one pawl and holds the electrical contact surface at one end surface of the first holder member in a first direction crossing the electrical contact surface. The second holder member includes at least one corner part engageable with the at least one pawl to provide an engaging portion therebetween. The second holder member has a through-hole that is open at another end face of the second holder member in the first direction. The engaging portion is accessible from an outside of the holder through the through-hole.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 17, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kenta TOSUJI, Nao ITABASHI, Kazuya KAMIKAWA
  • Publication number: 20220082991
    Abstract: Provided is a method for removing a first holder member from a second holder member in a cartridge. The cartridge includes: a housing; the first holder member holding an electrical contact surface; and the second holder member supported by the housing. The first holder member includes a pawl, and the second holder member includes a corner part engageable with the pawl of the first holder member. The electrical contact surface is held at one end surface of the first holder member in a first direction crossing the electrical contact surface. The method includes: disengaging the pawl from the corner part; and separating the housing and the second holder member from the first holder member in the first direction away from the one end surface of the first holder member.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 17, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kenta TOSUJI, Nao ITABASHI, Kazuya KAMIKAWA
  • Patent number: 11275337
    Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: March 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Junichi Yokoi
  • Patent number: 11275328
    Abstract: A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: March 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11262695
    Abstract: A drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the third frame plate.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: March 1, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Isao Kishi, Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda
  • Publication number: 20220050415
    Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.
    Type: Application
    Filed: July 20, 2021
    Publication date: February 17, 2022
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Junichi Yokoi