Patents by Inventor Isao Kishi
Isao Kishi 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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Patent number: 11320779Abstract: 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: GrantFiled: February 12, 2021Date of Patent: May 3, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Patent number: 11262695Abstract: 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: GrantFiled: November 18, 2020Date of Patent: March 1, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Isao Kishi, Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda
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Patent number: 11256208Abstract: 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: March 18, 2021Date of Patent: February 22, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Patent number: 11249418Abstract: 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: December 3, 2020Date of Patent: February 15, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Kazuaki Ooka, Isao Kishi, Junichi Hashimoto
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Patent number: 11204579Abstract: A drawer includes: a photosensitive drum; and a frame to which a developing cartridge is attachable. The photosensitive drum is rotatable about a rotational axis extending in an axial direction. The photosensitive drum has an outer circumferential surface. The developing cartridge includes a developing roller having an outer circumferential surface. The developing cartridge is attachable to the frame in a state where the outer circumferential surface of the developing roller faces the outer circumferential surface of the photosensitive drum. The frame is configured to move the developing roller in a separation direction in response to movement in the axial direction of at least a portion of the developing cartridge attached to the frame. The separation direction is a direction in which the outer circumferential surface of the developing roller separates from the outer circumferential surface of the photosensitive drum.Type: GrantFiled: August 21, 2020Date of Patent: December 21, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Publication number: 20210232083Abstract: An image forming apparatus includes a drawer and a main body. The drawer includes a drawer-side electrical contact part and a socket. The main body includes a main body-side connector including: a main body-side electrical contact part; and a holder including a base, a panel, and an elastic member interposed between the base and the panel. The holder holds the main body-side electrical contact part to be movable in an intersection direction intersecting with an extension and contraction direction of the elastic member. When the holder contacts the socket, the panel moves relative to the base in the intersection direction together with the main body side-electrical contact part, and the main body side-electrical contact part and drawer-side electrical contact part are in contact with each other.Type: ApplicationFiled: April 15, 2021Publication date: July 29, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Shota SHINOYA, Isao KISHI
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Publication number: 20210208532Abstract: 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: March 18, 2021Publication date: July 8, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
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Publication number: 20210208534Abstract: 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 fourth frame plate.Type: ApplicationFiled: March 19, 2021Publication date: July 8, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Isao KISHI
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Patent number: 11054765Abstract: A drum cartridge includes a first photosensitive drum, a frame, a main body connector, a first toner cartridge connector, a drum-cartridge circuit board, a harness, and a first harness. The harness is electrically connected between the main body connector and the drum-cartridge circuit board. The harness extends in the first direction. The first harness is electrically connected between the first toner cartridge connector and the drum-cartridge circuit board. The first harness extends in the second direction.Type: GrantFiled: August 20, 2020Date of Patent: July 6, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventor: Isao Kishi
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Publication number: 20210165361Abstract: 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: February 12, 2021Publication date: June 3, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
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Publication number: 20210165342Abstract: 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: December 3, 2020Publication date: June 3, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Kazuaki OOKA, Isao KISHI, Junichi HASHIMOTO
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Patent number: 10996615Abstract: An image forming apparatus includes a drawer and a main body. The drawer includes a drawer-side electrical contact part and a socket. The main body includes a main body-side connector including: a main body-side electrical contact part; and a holder including a base, a panel, and an elastic member interposed between the base and the panel. The holder holds the main body-side electrical contact part to be movable in an intersection direction intersecting with an extension and contraction direction of the elastic member. When the holder contacts the socket, the panel moves relative to the base in the intersection direction together with the main body side-electrical contact part, and the main body side-electrical contact part and drawer-side electrical contact part are in contact with each other.Type: GrantFiled: February 10, 2020Date of Patent: May 4, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Shota Shinoya, Isao Kishi
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Publication number: 20210109456Abstract: 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: December 10, 2020Publication date: April 15, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen WANG, Junichi HASHIMOTO, Isao KISHI, Kazuaki OOKA
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Patent number: 10962923Abstract: 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: April 29, 2020Date of Patent: March 30, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Patent number: 10955793Abstract: 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 fourth frame plate.Type: GrantFiled: August 13, 2019Date of Patent: March 23, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventor: Isao Kishi
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Publication number: 20210072698Abstract: 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: ApplicationFiled: November 18, 2020Publication date: March 11, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Isao KISHI, Nao ITABASHI, Yohei HASHIMOTO, Kouji WATANABE, Makoto SOUDA
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Patent number: 10942485Abstract: 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: GrantFiled: July 13, 2020Date of Patent: March 9, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Patent number: 10890857Abstract: 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: GrantFiled: March 1, 2019Date of Patent: January 12, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
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Publication number: 20200387104Abstract: A drawer includes: a photosensitive drum; a drawer frame; a connector; a drawer memory; and a holder. The photosensitive drum is rotatable about a drum axis extending in a first direction. The drawer frame holds the photosensitive drum. The drawer frame has an outer surface. The connector has a plurality of terminals arrayed in an arraying direction. The drawer memory stores information on the photosensitive drum. The drawer memory is electrically connectable to at least one of the plurality of terminals. The holder is positioned at the outer surface of the drawer frame and holds the connector. The holder is movable relative to the drawer frame in the arraying direction of the plurality of terminals.Type: ApplicationFiled: June 4, 2020Publication date: December 10, 2020Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Shota SHINOYA, Isao KISHI, Yuwen WANG
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Patent number: 10859942Abstract: 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: November 12, 2019Date of Patent: December 8, 2020Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuwen Wang, Kazuaki Ooka, Isao Kishi, Junichi Hashimoto