公开(公告)号：US12204275B2

公开(公告)日：2025-01-21

申请号：US18486004

申请日：2023-10-12

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Keita Shimizu ,  Tomoya Ichikawa ,  Takashi Shimizu ,  Kazuna Taguchi

IPC: G03G21/18 ,  G03G15/08 ,  G03G21/16

Abstract: A developing cartridge includes a developing electrode and a supply electrode. The developing electrode includes a first electrical contact in contact with a developing roller shaft, and a second electrical contact positioned closer to the developing roller shaft than a second agitator gear is to the developing roller shaft. The second electrical contact is positioned farther from the developing roller shaft than the first electrical contact is from the developing roller shaft. The supply electrode includes a first electrical contact in contact with the supply roller shaft, and a second electrical contact positioned closer to the developing roller shaft than the second agitator gear is to the developing roller shaft. The second electrical contact of the supply electrode is positioned farther from the developing roller shaft than the second electrical contact of the developing electrode is from the developing roller shaft.

公开(公告)号：US12072006B2

公开(公告)日：2024-08-27

申请号：US17931582

申请日：2022-09-13

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Takashi Shimizu ,  Yasuo Fukamachi ,  Keita Shimizu ,  Kazutoshi Nakamura

IPC: F16H3/18 ,  G03G15/08

CPC classification number: F16H3/18 ,  G03G15/0808

Abstract: A developing device may include an auger or an agitator that is capable of supplying toner in a toner accommodation chamber to a developing chamber and is rotatable about an auger axis extending in an axial direction, a transporting gear that is rotatable together with the auger or the agitator, and a moving gear that is in mesh with a coupling gear and is rotatable both counterclockwise and clockwise. The moving gear is movable while being in mesh with the coupling gear between a first position where the moving gear is in mesh with the transporting gear and a second position where the moving gear is out of mesh with the transporting gear. The moving gear moves to the first position when the coupling gear rotates counterclockwise and to the second position when the coupling gear rotates clockwise.

公开(公告)号：US11474473B2

公开(公告)日：2022-10-18

申请号：US17478443

申请日：2021-09-17

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Masaaki Furukawa ,  Takashi Shimizu ,  Shinya Kusuda ,  Tomitake Aratachi ,  Yasuo Fukamachi ,  Keita Shimizu ,  Kazutoshi Nakamura ,  Kouichi Sugimoto

IPC: G03G21/12 ,  G03G21/10 ,  G03G21/16 ,  G03G21/18

Abstract: An image forming apparatus includes: a casing having an opening; a developing cartridge configured to accommodate toner therein; and a drum cartridge to which the developing cartridge is attachable. The drum cartridge is attachable to the casing through the opening in a state where the developing cartridge is attached to the drum cartridge. The drum cartridge includes: a photosensitive drum; a drum frame; a charge roller; a cleaning blade configured to clean a circumferential surface of the photosensitive drum; a waste toner collecting unit having an internal space allowing waste toner removed from the circumferential surface of the photosensitive drum by the cleaning blade to be collected therein; a waste toner accumulating unit having an internal space allowing the waste toner to be accumulated therein; and a waste toner conveying unit configured to convey the waste toner from the waste toner collecting unit to the waste toner accumulating unit.

公开(公告)号：US11448289B2

公开(公告)日：2022-09-20

申请号：US17337729

申请日：2021-06-03

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Takashi Shimizu ,  Yasuo Fukamachi ,  Keita Shimizu ,  Kazutoshi Nakamura

IPC: F16H3/18 ,  G03G15/08

Abstract: A developing device may include an auger or an agitator that is capable of supplying toner in a toner accommodation chamber to a developing chamber and is rotatable about an auger axis extending in an axial direction, a transporting gear that is rotatable together with the auger or the agitator, and a moving gear that is in mesh with a coupling gear and is rotatable both counterclockwise and clockwise. The moving gear is movable while being in mesh with the coupling gear between a first position where the moving gear is in mesh with the transporting gear and a second position where the moving gear is out of mesh with the transporting gear. The moving gear moves to the first position when the coupling gear rotates counterclockwise and to the second position when the coupling gear rotates clockwise.

公开(公告)号：US11204585B2

公开(公告)日：2021-12-21

申请号：US17111659

申请日：2020-12-04

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Keita Shimizu

IPC: G03G21/18 ,  G03G21/16 ,  G03G15/08

Abstract: A developing cartridge includes a casing, a drive gear, a first gear, and a second gear rotatable relative to the first gear. The drive gear includes a small-diameter gear part, and a large-diameter gear part. The first gear includes: a first gear teeth part having a plurality of gear teeth; and a first protrusion movable in accordance with rotation of the first gear teeth part. The second gear includes: a second gear teeth part having at least one gear tooth; and a second protrusion movable in accordance with rotation of the second gear teeth part. The second gear teeth part is configured to meshingly engage with the large-diameter gear part to rotate the second gear after the first gear rotates by a prescribed angle by meshing engagement between the small-diameter gear part and the first gear teeth part.

公开(公告)号：US11181852B2

公开(公告)日：2021-11-23

申请号：US16872893

申请日：2020-05-12

Applicant: Brother Kogyo Kabushiki Kaisha

Inventor： Hideshi Nishiyama ,  Keita Shimizu

IPC: G03G15/08

Abstract: Toner cartridge includes a housing, an agitator, an auger, a first protrusion, and a second protrusion. The housing includes a first toner accommodating portion having and a second toner accommodating portion. The auger is rotatable about a second axis extending in a first direction and is configured to convey toner from a first toner accommodating portion to the second toner accommodating portion. The first protrusion is positioned at a first side of the second toner accommodating portion. The first protrusion extends in the first direction. The second protrusion is positioned at a second side of the second toner accommodating portion and extends in the first direction.

公开(公告)号：US10831129B2

公开(公告)日：2020-11-10

申请号：US16517901

申请日：2019-07-22

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Keita Shimizu ,  Takashi Shimizu ,  Hideshi Nishiyama ,  Naoya Kamimura ,  Tomonori Watanabe

IPC: G03G15/08 ,  G03G21/18 ,  G03G21/16 ,  F16H27/04

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.

公开(公告)号：US20200272071A1

公开(公告)日：2020-08-27

申请号：US16872893

申请日：2020-05-12

Applicant: Brother Kogyo Kabushiki Kaisha

Inventor： Hideshi Nishiyama ,  Keita Shimizu

IPC: G03G15/08

Abstract: Toner cartridge includes a housing, an agitator, an auger, a first protrusion, and a second protrusion. The housing includes a first toner accommodating portion having and a second toner accommodating portion. The auger is rotatable about a second axis extending in a first direction and is configured to convey toner from a first toner accommodating portion to the second toner accommodating portion. The first protrusion is positioned at a first side of the second toner accommodating portion. The first protrusion extends in the first direction. The second protrusion is positioned at a second side of the second toner accommodating portion and extends in the first direction.

公开(公告)号：US10747173B2

公开(公告)日：2020-08-18

申请号：US16534803

申请日：2019-08-07

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Keita Shimizu ,  Tomoya Ichikawa ,  Takashi Shimizu ,  Kazuna Taguchi

IPC: G03G21/18 ,  G03G15/08 ,  G03G21/16

Abstract: A developing cartridge includes a developing electrode and a supply electrode. The developing electrode includes a first electrical contact in contact with a developing roller shaft, and a second electrical contact positioned closer to the developing roller shaft than a second agitator gear is to the developing roller shaft. The second electrical contact is positioned farther from the developing roller shaft than the first electrical contact is from the developing roller shaft. The supply electrode includes a first electrical contact in contact with the supply roller shaft, and a second electrical contact positioned closer to the developing roller shaft than the second agitator gear is to the developing roller shaft. The second electrical contact of the supply electrode is positioned farther from the developing roller shaft than the second electrical contact of the developing electrode is from the developing roller shaft.

公开(公告)号：US10379492B2

公开(公告)日：2019-08-13

申请号：US16284372

申请日：2019-02-25

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Keita Shimizu ,  Tomoya Ichikawa ,  Takashi Shimizu ,  Kazuna Taguchi

IPC: G03G15/08 ,  G03G21/16 ,  G03G21/18

Abstract: A developing cartridge includes a developing electrode and a supply electrode. The developing electrode includes a first electrical contact in contact with a developing roller shaft, and a second electrical contact positioned closer to the developing roller shaft than a second agitator gear is to the developing roller shaft. The second electrical contact is positioned farther from the developing roller shaft than the first electrical contact is from the developing roller shaft. The supply electrode includes a first electrical contact in contact with the supply roller shaft, and a second electrical contact positioned closer to the developing roller shaft than the second agitator gear is to the developing roller shaft. The second electrical contact of the supply electrode is positioned farther from the developing roller shaft than the second electrical contact of the developing electrode is from the developing roller shaft.