Patents by Inventor Junichi Hashimoto
Junichi Hashimoto 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).
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Publication number: 20250141283Abstract: A stator for a rotating electrical machine including a stator core having a plurality of slots; and a stator coil formed by installing, for each phase, coil pieces along an entire circumference of the stator core. The stator coil is wound in such that two sets of coils are connected in parallel for each phase, and is wound by short pitch winding. For each phase, each of a circumferential coil center of a first set of the coils and a circumferential coil center of a second set of the coils either coincides with a coil center position for each phase, the coil center position being formed at each magnetic pole pitch along the entire circumference of the stator core, or is alternately shifted by the same amount toward one side and the other side in a circumferential direction with respect to the coil center position for each magnetic pole pitch.Type: ApplicationFiled: April 14, 2023Publication date: May 1, 2025Applicant: AISIN CORPORATIONInventors: Shingo HASHIMOTO, Junichi SUGAWARA, Tokuhisa MISHINA
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Publication number: 20250130517Abstract: A developing roller is located nearer a first end than a second end in a first direction. A first boss extends in a second direction and is movable together with a housing. The first boss bears the weight of a developer cartridge when the first boss is supported by a support surface of a first side plate of a drum unit, and is located away from the developing roller in the first direction and the third direction. A first pressure receiving surface is located farther away from the developing roller than the first boss in the third direction. The pressure receiving member receives a pressing force in the third direction from a pressing member of the first side plate of the drum unit. The first boss is located away from the developing roller in the first direction by a first distance. The first pressure receiving surface is located away from the developing roller in the first direction by the first distance or by a second distance smaller than the first distance.Type: ApplicationFiled: November 5, 2024Publication date: April 24, 2025Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Kazuaki OOKA, Isao KISHI, Junichi HASHIMOTO
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Publication number: 20250119017Abstract: A plurality of segment conductors include a plurality of general segment conductor continuously joined to each other to constitute a plurality of coil bodies, and a specific segment conductor joined to an end of each of a plurality of the coil bodies. Axially extending portions of at least some of a plurality of the specific segment conductors are arranged so as to have a portion that does not overlap the connecting portion in axial view along an axial direction and is sandwiched, in a radial direction, between a plurality of the connecting portions arranged at different positions in the radial direction.Type: ApplicationFiled: April 19, 2023Publication date: April 10, 2025Applicant: AISIN CORPORATIONInventors: Shingo HASHIMOTO, Junichi SUGAWARA, Tokuhisa MISHINA
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Publication number: 20250116953Abstract: 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: ApplicationFiled: December 16, 2024Publication date: April 10, 2025Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Naoya KAMIMURA, Tomitake ARATACHI, Yasuo FUKAMACHI, Junichi HASHIMOTO, Saya MINOSHIMA, Nao ITABASHI, Kazutoshi NAKAMURA, Misato OSUKA, Junya SUMIDA, Shinya KUSUDA
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Patent number: 12271126Abstract: An image forming apparatus includes: a photosensitive drum; a magnetic roller; a transfer belt; a drum cleaning roller for collecting toner on the photosensitive drum and discharging collected toner to the photosensitive drum; a belt cleaner; a waste toner accommodating unit; and a controller configured to perform a printing operation for forming an image on a sheet and a cleaning operation for cleaning the drum cleaning roller. The controller is configured to perform: when performing the printing operation, collecting toner on the photosensitive drum using the drum cleaning roller; and when performing the cleaning operation, discharging the toner on the drum cleaning roller collected in the collecting to the photosensitive drum; transferring the toner on the photosensitive drum onto the transfer belt; and collecting the toner on the transfer belt using the belt cleaner so that the collected toner is accommodated in the waste toner accommodating unit.Type: GrantFiled: September 6, 2023Date of Patent: April 8, 2025Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Toshio Furukawa, Koji Ogawa, Fan Xu, Kazuma Hinoue, Hotaka Kakutani, Shintaro Fukuoka, Soun Kanada, Masahiko Hayakawa, Marika Ozaki, Masaki Ueji, Ayaka Komori, Enao Yamada, Miho Ishida, Keigo Nakajima, Shota Iriyama, Kengo Yada, Yuwen Wang, Junichi Hashimoto
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Publication number: 20250110422Abstract: A developing cartridge includes: a casing, a developing roller, a first agitator, a supply roller, and a second agitator. The casing is configured to accommodate toner. The developing roller is rotatable about a developing roller rotation axis extending in a first direction. The first agitator is configured to agitate the toner. The first agitator is rotatable about a first agitator rotation axis extending in the first direction. The supply roller is positioned between the first agitator and the developing roller. The supply roller is rotatable about a supply roller rotation axis extending in the first direction. The second agitator is positioned between the supply roller and the first agitator. The second agitator is rotatable about a second agitator rotation axis extending in the first direction. A rotation locus of the second agitator is positioned outside of a rotation locus of the first agitator.Type: ApplicationFiled: October 10, 2024Publication date: April 3, 2025Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuaki Ooka, Junichi Hashimoto, Shota Iriyama, Keigo Nakajima, Kengo Yada
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Patent number: 12228867Abstract: A toner cartridge includes: a casing; a conveyer member rotatable about an axis; a shutter rotatable about the axis between a closed position and an open position; a toner coupling rotatable about the axis; a planet carrier rotatable about the axis with the toner coupling; a planetary gear rotatable about a pin of the planet carrier and rotatable about the axis in accordance with the rotation of the planet carrier; and a ring gear meshing with the planetary gear and rotatable about the axis with the shutter. When the shutter moves from the closed position to the open position, the planetary gear is not rotatable about the pin and is rotatable about the axis with the ring gear. In a state where the shutter is at the open position, the planetary gear is rotatable about the pin and is rotatable about the axis relative to the ring gear.Type: GrantFiled: May 25, 2023Date of Patent: February 18, 2025Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Takuya Amaike
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Patent number: 12210300Abstract: 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: GrantFiled: August 3, 2023Date of Patent: January 28, 2025Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Naoya Kamimura, Tomitake Aratachi, Yasuo Fukamachi, Junichi Hashimoto, Saya Minoshima, Nao Itabashi, Kazutoshi Nakamura, Misato Osuka, Junya Sumida, Shinya Kusuda
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Patent number: 12197168Abstract: A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.Type: GrantFiled: February 21, 2024Date of Patent: January 14, 2025Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Publication number: 20250013170Abstract: An image forming apparatus including a housing, a toner cartridge, and a drum unit. The drum unit is movable through the opening between an accommodated position where the drum unit is positioned in the housing and a pulled-out position where the drum unit is pulled out of the housing. The drum unit includes a photosensitive drum and a developing unit. The photosensitive drum is rotatable about a first axis extending in a second direction. The developing unit includes a magnetic roller, a developer container, a first auger and a second auger. The magnetic roller is positioned between the toner cartridge and the photosensitive drum. The magnetic roller faces a surface of the photosensitive drum. The developer container is formed with an inlet allowing the toner to be replenished from the toner cartridge. The first auger is positioned in the developer container. The second auger is positioned in the developer container.Type: ApplicationFiled: July 12, 2024Publication date: January 9, 2025Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Junichi HASHIMOTO, Yuwen WANG, Takuya AMAIKE, Soun KANADA, Kazuma HINOUE
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Publication number: 20250013165Abstract: A developing cartridge includes a casing having an outer surface, a developing roller, a first electrode, and a boss. The developing roller is movable together with the casing and includes a developing roller shaft extending along a first axis extending in a first direction. The developing roller is rotatable about the first axis. The first electrode is positioned at one end portion in the first direction of the developing roller shaft, and electrically connected to the developing roller shaft. The boss is positioned at one end portion in the first direction of the outer surface. The boss extends in the first direction and is engageable with the drum unit. A part of the first electrode is configured to contact with a second electrode of the drum unit as a result of pivotal movement of the developing cartridge about the boss relative to the drum unit.Type: ApplicationFiled: June 12, 2024Publication date: January 9, 2025Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Publication number: 20240427284Abstract: A drum unit includes a photosensitive drum, a developing unit, a toner cartridge, a connector and a relay board. The photosensitive drum is rotatable about a first axis extending in an axial direction. The developing unit includes a magnetic roller, a developer container, a conveyer member and a toner sensor. The developer container accommodates therein carrier, and has an inlet. The conveyer member is positioned in the developer container, and configured to convey toner and the carrier from the inlet toward the magnetic roller. The toner cartridge accommodates therein toner and is attachable to the developer container to replenish toner in the developer container through the inlet. The connector is electrically connected to an image forming apparatus. The relay board electrically connects the toner sensor to the connector. The relay board is configured to transmit a detection signal from the toner sensor to the image forming apparatus.Type: ApplicationFiled: July 3, 2024Publication date: December 26, 2024Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Takuya AMAIKE, Junichi HASHIMOTO
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Patent number: 12174557Abstract: A developing roller is located nearer a first end than a second end in a first direction. A first boss extends in a second direction and is movable together with a housing. The first boss bears the weight of a developer cartridge when the first boss is supported by a support surface of a first side plate of a drum unit, and is located away from the developing roller in the first direction and the third direction. A first pressure receiving surface is located farther away from the developing roller than the first boss in the third direction. The pressure receiving member receives a pressing force in the third direction from a pressing member of the first side plate of the drum unit. The first boss is located away from the developing roller in the first direction by a first distance. The first pressure receiving surface is located away from the developing roller in the first direction by the first distance or by a second distance smaller than the first distance.Type: GrantFiled: May 15, 2023Date of Patent: December 24, 2024Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Kazuaki Ooka, Isao Kishi, Junichi Hashimoto
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Patent number: 12169008Abstract: This disk brake includes an attachment member that has support portions movably supporting a pair of brake pads, and a caliper that pressurizes the brake pads against a disk. The attachment member has outer circumferential frame portions, a coupling beam portion, and support main body portions. The outer circumferential frame portions extend in a disk circumferential direction so as to cover the disk while straddling the disk. The coupling beam portion couples the support portions to each other. The support main body portions form the support portions. The outer frame constituting portions constitute the outer frames of the support main body portions. Positions of disk-axially outward side end surfaces in a disk axial direction are the same as positions of the disk-axially outward side end surfaces of the caliper or on sides outward in the disk axial direction.Type: GrantFiled: November 26, 2020Date of Patent: December 17, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Miyuki Uno, Junichi Hashimoto, Shinji Suzuki, Yoshihiro Iwama, Masaru Oda
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Patent number: 12164261Abstract: A drum cartridge attachable to and detachable from a main frame of an image forming apparatus includes: a photosensitive drum; a drum frame; and a drum contact. The photosensitive drum is rotatable about a drum axis extending in a first direction. A toner cartridge including a storage medium having an electrical contact surface is attachable to and detachable from the drum frame. In a state where the toner cartridge is attached to the drum frame, the drum contact is movable in the first direction between: a separated position in which the drum contact is positioned away from the electrical contact surface; and a contacting position in which the drum contact is in contact with the electrical contact surface. The drum contact moves from the separated position to the contacting position in accordance with attachment of the drum cartridge to the main frame.Type: GrantFiled: May 24, 2023Date of Patent: December 10, 2024Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Takuya Amaike, Masayoshi Mita
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Patent number: 12147171Abstract: A developing cartridge includes: a casing, a developing roller, a first agitator, a supply roller, and a second agitator. The casing is configured to accommodate toner. The developing roller is rotatable about a developing roller rotation axis extending in a first direction. The first agitator is configured to agitate the toner. The first agitator is rotatable about a first agitator rotation axis extending in the first direction. The supply roller is positioned between the first agitator and the developing roller. The supply roller is rotatable about a supply roller rotation axis extending in the first direction. The second agitator is positioned between the supply roller and the first agitator. The second agitator is rotatable about a second agitator rotation axis extending in the first direction. A rotation locus of the second agitator is positioned outside of a rotation locus of the first agitator.Type: GrantFiled: December 12, 2022Date of Patent: November 19, 2024Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuaki Ooka, Junichi Hashimoto, Shota Iriyama, Keigo Nakajima, Kengo Yada
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Publication number: 20240345537Abstract: In an image forming apparatus, a process frame is movable into and out of a main casing in a first direction. The process frame includes a first wall and a second wall spaced apart from the first wall in a second direction. A first cartridge is detachably mountable to the process frame in a third direction crossing the second direction. A first electrode protrudes from an outer surface of the first cartridge outwardly in the second direction. In a state where the first cartridge is mounted to the process frame, the first cartridge is positioned between the first wall and second wall of the process frame in the second direction and a portion of the first wall aligns with the first electrode in the third direction such that the portion of the first wall is overlapped with the first electrode as viewed in the third direction.Type: ApplicationFiled: April 26, 2024Publication date: October 17, 2024Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yasushi OKABE, Junichi HASHIMOTO
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Patent number: 12105444Abstract: An image forming apparatus including a housing, a toner cartridge, and a drum unit. The drum unit is movable through the opening between an accommodated position where the drum unit is positioned in the housing and a pulled-out position where the drum unit is pulled out of the housing. The drum unit includes a photosensitive drum and a developing unit. The photosensitive drum is rotatable about a first axis extending in a second direction. The developing unit includes a magnetic roller, a developer container, a first auger and a second auger. The magnetic roller is positioned between the toner cartridge and the photosensitive drum. The magnetic roller faces a surface of the photosensitive drum. The developer container is formed with an inlet allowing the toner to be replenished from the toner cartridge. The first auger is positioned in the developer container. The second auger is positioned in the developer container.Type: GrantFiled: April 13, 2023Date of Patent: October 1, 2024Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Junichi Hashimoto, Yuwen Wang, Takuya Amaike, Soun Kanada, Kazuma Hinoue
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Publication number: 20240272579Abstract: A photosensitive drum is rotatable about a drum axis extending in a first direction. A frame includes a first side plate located at first end in the first direction and a second side plate spaced from the first side plate in the first direction. The frame rotatably supports the photosensitive drum between the first side plate and the second side plate in the first direction. The frame holds a developer cartridge. A lock lever is pivotable about a pivot axis extending in a second direction intersecting with the first direction. The lock lever is movable between a lock position at which the developer cartridge is locked on the frame and a release position at which the developer cartridge is unlocked from the frame.Type: ApplicationFiled: January 29, 2024Publication date: August 15, 2024Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
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Publication number: 20240272580Abstract: A developing cartridge includes: a casing; a developing roller; a shaft; and a cam. The casing is configured to accommodate developer therein. The developing roller is rotatable about a first axis extending in an axial direction. The shaft extends along a second axis extending in the axial direction. The shaft is movable along the second axis. The cam is movable along the second axis in response to axial movement of the shaft. The cam has a cam surface non-parallel with the second axis.Type: ApplicationFiled: February 21, 2024Publication date: August 15, 2024Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA