Patents by Inventor Yasuo Fukamachi

Yasuo Fukamachi 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: 20240036514
    Abstract: An image forming apparatus, including a process cartridge and a main body with an opening and a cartridge supporter is provided. The process cartridge includes a drum cartridge; a toner cartridge attachable to the drum cartridge; and a switching member switchable states in the process cartridge between a first state, wherein detachment of the toner cartridge is restricted, and a second state, wherein the toner cartridge is released from the restriction. The cartridge supporter is movable between a first position, wherein the cartridge supporter supports the process cartridge to be placed entirely in an inner space in the main body on an inner side of the opening, and a second position, wherein the cartridge supporter supports the process cartridge to be at least partly placed outside the inner space. When the cartridge supporter is in the second position, the switching member is at least partly placed outside the inner space.
    Type: Application
    Filed: October 12, 2023
    Publication date: February 1, 2024
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo SATO, Yasuo FUKAMACHI, Motoaki MUSHIKA, Kazuna TAGUCHI
  • Patent number: 11886129
    Abstract: An image forming apparatus includes: a main casing; a photosensitive drum rotatable about an axis extending in a first direction; a developing cartridge; a transfer unit; a solvent cartridge accommodating solvent for dissolving toner; an applicator applying the solvent to the toner on a sheet; and a cover movable between an open position and a closed position. The developing cartridge and the solvent cartridge are detachably attachable to the main casing independently of each other. The developing cartridge and the solvent cartridge are positioned between the applicator and the cover in a second direction crossing the first direction, and the solvent cartridge is positioned closer to the applicator than the developing cartridge is to the applicator in a state where the developing cartridge and the solvent cartridge are attached to the main casing and the cover is at the closed position.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: January 30, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yutaka Kakigahara, Satoshi Murata, Masataka Kamiya, Masaaki Furukawa, Yasuo Fukamachi, Kazutoshi Nakamura, Hideshi Nishiyama, Keita Shimizu, Keita Hironaka, Mariko Mogi, Naoya Kamimura, Kazuma Hinoue, Kouichi Sugimoto, Shinya Kusuda, Shunji Yoshimoto
  • Publication number: 20240027951
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Application
    Filed: August 3, 2023
    Publication date: January 25, 2024
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi NAKAMURA, Yasuo FUKAMACHI, Masaaki FURUKAWA
  • Publication number: 20230393521
    Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion, the first developing supporting portion being configured to rotatably support a first part of a rotational shaft, the driving-force-receiving-member supporting portion being configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion, the second developing supporting portion being configured to rotatably support a second part of the rotational shaft, the detection-rotational-body supporting portion being configured to rotatably support a detection rotational body.
    Type: Application
    Filed: May 8, 2023
    Publication date: December 7, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Hideshi Nishiyama, Yasuo Fukamachi
  • Publication number: 20230375958
    Abstract: A developing cartridge includes a casing, a developing roller rotatable about an axis extending in a first direction, a developing memory having an electrical contact surface, an agitator, an agitator gear rotatable about an agitator axis together with the agitator, a holder holding the electrical contact surface, and a plate movable between a first position and a second position in a second direction crossing the first direction relative to the casing. The holder is movable relative to the casing in a third direction crossing the first and second directions between a retracted position and an advancing position. The holder is movable from the retracted position to the advancing position in response to a movement of the plate from the first position to the second position. The plate is positioned farther away from the developing roller than the agitator gear and the holder are in the second direction.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 23, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Naoya KAMIMURA, Tomitake ARATACHI, Yasuo FUKAMACHI, Junichi HASHIMOTO, Saya MINOSHIMA, Nao ITABASHI, Kazutoshi NAKAMURA, Misato OSUKA, Junya SUMIDA, Shinya KUSUDA
  • Publication number: 20230367259
    Abstract: An image forming apparatus includes: a main body housing; a developing cartridge attachable to and detachable from the main body housing; a drum cartridge attachable to and detachable from the main body housing; and a developing guide for guiding attachment and detachment of the developing cartridge to and from the main body housing. The developing cartridge includes a developing roller and a developing memory for storing information. The drum cartridge includes a photosensitive drum. The developing guide is movable together with the developing cartridge between a first position where the developing roller is in contact with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum. The developing guide includes a developing memory terminal configured to be in contact with the developing memory in a state where the developing cartridge is attached to the main body housing.
    Type: Application
    Filed: July 26, 2023
    Publication date: November 16, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo FUKAMACHI, Kazutoshi NAKAMURA, Masaaki FURUKAWA
  • Patent number: 11815846
    Abstract: An image forming apparatus, including a process cartridge and a main body with an opening and a cartridge supporter is provided. The process cartridge includes a drum cartridge; a toner cartridge attachable to the drum cartridge; and a switching member switchable states in the process cartridge between a first state, wherein detachment of the toner cartridge is restricted, and a second state, wherein the toner cartridge is released from the restriction. The cartridge supporter is movable between a first position, wherein the cartridge supporter supports the process cartridge to be placed entirely in an inner space in the main body on an inner side of the opening, and a second position, wherein the cartridge supporter supports the process cartridge to be at least partly placed outside the inner space. When the cartridge supporter is in the second position, the switching member is at least partly placed outside the inner space.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: November 14, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo Sato, Yasuo Fukamachi, Motoaki Mushika, Kazuna Taguchi
  • Publication number: 20230333498
    Abstract: A developing cartridge includes: a casing; a developing roller rotatable about an axis extending in a first direction; a first agitator; an agitator gear; a first protrusion; a developing memory; a first electrical contact surface; and a first holder holding the first electrical contact surface. The agitator gear includes a large diameter gear and a small diameter gear positioned between the large diameter gear and the casing in the first direction. The first protrusion protrudes outward from one end of the casing in the first direction, and is positioned between the casing and the large diameter gear in the first direction. The first protrusion is positioned away from the small diameter gear. The first holder is positioned farther from the first protrusion than the large diameter gear is in the first direction. The first holder and the first electrical contact surface are movable relative to the casing.
    Type: Application
    Filed: June 20, 2023
    Publication date: October 19, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shinya KUSUDA, Yasuo FUKAMACHI
  • Patent number: 11762312
    Abstract: A developing cartridge includes a casing, a developing roller rotatable about an axis extending in a first direction, a developing memory having an electrical contact surface, an agitator, an agitator gear rotatable about an agitator axis together with the agitator, a holder holding the electrical contact surface, and a plate movable between a first position and a second position in a second direction crossing the first direction relative to the casing. The holder is movable relative to the casing in a third direction crossing the first and second directions between a retracted position and an advancing position. The holder is movable from the retracted position to the advancing position in response to a movement of the plate from the first position to the second position. The plate is positioned farther away from the developing roller than the agitator gear and the holder are in the second direction.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: September 19, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Naoya Kamimura, Tomitake Aratachi, Yasuo Fukamachi, Junichi Hashimoto, Saya Minoshima, Nao Itabashi, Kazutoshi Nakamura, Misato Osuka, Junya Sumida, Shinya Kusuda
  • Patent number: 11754965
    Abstract: An image forming apparatus includes: a main body housing; a developing cartridge attachable to and detachable from the main body housing; a drum cartridge attachable to and detachable from the main body housing; and a developing guide for guiding attachment and detachment of the developing cartridge to and from the main body housing. The developing cartridge includes a developing roller and a developing memory for storing information. The drum cartridge includes a photosensitive drum. The developing guide is movable together with the developing cartridge between a first position where the developing roller is in contact with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum. The developing guide includes a developing memory terminal configured to be in contact with the developing memory in a state where the developing cartridge is attached to the main body housing.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: September 12, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo Fukamachi, Kazutoshi Nakamura, Masaaki Furukawa
  • Patent number: 11747765
    Abstract: In a developing cartridge, a first supporting member is attached to a housing and has a first developing supporting portion and a driving-force-receiving-member supporting portion, the first developing supporting portion being configured to rotatably support a first part of a rotational shaft, the driving-force-receiving-member supporting portion being configured to rotatably support a driving-force-receiving member. The second supporting member is attached to the housing and has a second developing supporting portion and a detection-rotational-body supporting portion, the second developing supporting portion being configured to rotatably support a second part of the rotational shaft, the detection-rotational-body supporting portion being configured to rotatably support a detection rotational body.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: September 5, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Hideshi Nishiyama, Yasuo Fukamachi
  • Patent number: 11747749
    Abstract: A developing cartridge includes: a casing; a developing roller rotatable about an axis extending in a first direction; a first agitator; an agitator gear; a first protrusion; a developing memory; a first electrical contact surface; and a first holder holding the first electrical contact surface. The agitator gear includes a large diameter gear and a small diameter gear positioned between the large diameter gear and the casing in the first direction. The first protrusion protrudes outward from one end of the casing in the first direction, and is positioned between the casing and the large diameter gear in the first direction. The first protrusion is positioned away from the small diameter gear. The first holder is positioned farther from the first protrusion than the large diameter gear is in the first direction. The first holder and the first electrical contact surface are movable relative to the casing.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: September 5, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shinya Kusuda, Yasuo Fukamachi
  • Patent number: 11740583
    Abstract: An image forming apparatus includes a main casing, a drum cartridge and a developing cartridge. The drum cartridge may include a first handle positioned at a first end of a frame of the drum cartridge. The developing cartridge may include a second handle positioned at a first end of a developing casing the developing cartridge. The main casing may include a first edge surface in the axial direction and a second edge surface opposite the first edge surface in the axial direction. The second handle may extend farther from the second edge surface than the first handle extends from the second edge surface in the axial direction in a state where the drum cartridge and the developing cartridge are attached to the main casing.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: August 29, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi Nakamura, Yasuo Fukamachi, Masaaki Furukawa
  • Patent number: 11733639
    Abstract: An image forming apparatus includes an apparatus main body, a drawer, a drum cartridge, an exposure device, a fixing device, and a toner cartridge. The drum cartridge includes a photosensitive drum, a cleaning member, a developing device, a waste toner conveying pipe, and a frame. The toner cartridge includes a toner container and a waste toner container. The cleaning member is located between the photosensitive drum and the fixing device in a vertical direction in the state where the drum cartridge is mounted to the drawer and the drawer is located at an inner position. The drum cartridge is capable of being mounted to the drawer. The toner cartridge is attachable to and detachable from the drum cartridge.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: August 22, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo Sato, Yasuo Fukamachi
  • Publication number: 20230244156
    Abstract: A cartridge includes: a housing; a storage medium including an electrical contact surface; and a storage medium holder holding the storage medium and movable relative to the housing. The storage medium holder is positioned at one end portion of the housing in a first direction and includes: a first holder holding the electrical contact surface; a second holder positioned spaced away from the first holder in a second direction crossing the first direction; and an elastic member expandable and shrinkable in the second direction between the first holder and the second holder. The first holder has a first hole penetrating the first holder in the second direction. The first hole is positioned farther from the housing in the first direction than the second holder and the elastic member are from the housing in the first direction and is overlapped with the electrical contact surface as viewed in the second direction.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 3, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shinya KUSUDA, Nao ITABASHI, Masaaki FURUKAWA, Shuhei HATANO, Yasuo FUKAMACHI
  • Publication number: 20230205115
    Abstract: A developing cartridge may include: a casing; a developing roller extending in a first direction; a developing-roller gear; a coupling including a coupling gear; a first idle gear; a second idle gear; an agitator; a first agitator gear; and a protrusion. The developing-roller gear, the coupling, the first idle gear, the second idle gear, the first agitator gear, and the protrusion may be positioned at an outer surface of the casing. The protrusion may be positioned between a first axis of the coupling and a third axis of the first agitator gear in a second direction connecting the first and third axes. The protrusion may be positioned outside an addendum circle of the developing-roller gear, an addendum circle of the coupling gear, an addendum circle of the first idle gear, and an addendum circle of the second idle gear. The first agitator gear may be spaced apart from the protrusion in the first direction.
    Type: Application
    Filed: March 2, 2023
    Publication date: June 29, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo FUKAMACHI, Kazuna TAGUCHI, Takuya KANDA
  • Publication number: 20230132911
    Abstract: A process cartridge mountable on an image forming apparatus includes a photoconductive drum, a developing unit including a developing roller and a toner storage unit. The toner storage includes a first toner storage chamber, a second toner storage chamber located above the first toner storage chamber, a first toner conveying member located in the first toner storage chamber and configured to convey the toner in the first toner storage chamber upward toward the second toner storage chamber in an area wider than the toner discharge outlet in the first direction, and a second toner conveying member located in the second toner storage chamber and configured to convey, in the first direction, the toner in the second toner storage chamber toward the toner discharge outlet.
    Type: Application
    Filed: October 20, 2022
    Publication date: May 4, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo SATO, Yasutada KATO, Yasuo FUKAMACHI
  • Patent number: 11635708
    Abstract: A developing cartridge may include: a casing; a developing roller extending in a first direction; a developing-roller gear; a coupling including a coupling gear; a first idle gear; a second idle gear; an agitator; a first agitator gear; and a protrusion. The developing-roller gear, the coupling, the first idle gear, the second idle gear, the first agitator gear, and the protrusion may be positioned at an outer surface of the casing. The protrusion may be positioned between a first axis of the coupling and a third axis of the first agitator gear in a second direction connecting the first and third axes. The protrusion may be positioned outside an addendum circle of the developing-roller gear, an addendum circle of the coupling gear, an addendum circle of the first idle gear, and an addendum circle of the second idle gear. The first agitator gear may be spaced apart from the protrusion in the first direction.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: April 25, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo Fukamachi, Kazuna Taguchi, Takuya Kanda
  • Publication number: 20230062417
    Abstract: A cartridge includes: a photosensitive drum; a drum cleaner for cleaning the photosensitive drum; a toner pipe for conveying collected toner; a toner container storing therein toner; and a developing device for supplying toner in the toner container to the photosensitive drum. The cartridge is detachably attachable to an image forming apparatus. The collected toner is toner removed from the photosensitive drum by the drum cleaner. The developing device includes a developing housing for storing therein toner supplied from the toner container and the collected toner conveyed by the toner pipe. The toner container has: a toner discharge port for discharging toner stored in the toner container; and a returned toner receiving port for receiving toner returned from the developing device. The developing housing has: a toner receiving port for receiving toner discharged from the toner discharge port; and a toner return port for returning toner to the toner container.
    Type: Application
    Filed: August 24, 2022
    Publication date: March 2, 2023
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasutada KATO, Yasuo FUKAMACHI, Shougo SATO, Koji OGAWA
  • Patent number: 11567446
    Abstract: A process cartridge includes a developing cartridge and a drum cartridge. The developing cartridge includes: a casing; a developing roller rotatable about a developing axis extending in a first direction; and a development-side IC chip having a development-side electrical contact surface. The drum cartridge includes: a drum frame; a photosensitive drum rotatable about a drum axis extending in the first direction; a drum-side IC chip having a drum-side electrical contact surface; and a lock lever configured to lock the developing cartridge to the drum frame. The development-side electrical contact surface and the drum-side electrical contact surface are positioned opposite to the lock lever with respect to the casing in the first direction in a state where the developing cartridge is attached to the drum frame.
    Type: Grant
    Filed: January 21, 2022
    Date of Patent: January 31, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo Fukamachi, Shinya Kusuda