Patents by Inventor Yohei Hashimoto
Yohei 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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Patent number: 11911805Abstract: An optical connector cleaning tool includes a fitting portion (44) fitted in the first or second hole (36, 37) of a connection component (32) into which a compact dual core optical connector is fitted on one end side and a cleaning medium (45) projecting from the fitting portion (44). The fitting portion (44) is formed to have a shape by which the fitting portion (44) is fitted in the first or second hole (36, 37) in each of the first and second postures as postures shifted through 180° with respect to as the center the middle (P2) of a virtual straight line connecting the centers of the two ferrules when viewed from an axial direction of the compact dual core optical connector. The fitting portion (44) contacts one ferrule in a state in which the fitting portion (44) is set in the first posture. The fitting portion (44) contacts the other ferrule in a state in which the fitting portion (44) is set in the second posture.Type: GrantFiled: January 22, 2020Date of Patent: February 27, 2024Assignees: NTT ADVANCED TECHNOLOGY CORPORATION, SENKO ADVANCED COMPONENTS, INC.Inventors: Etsu Hashimoto, Yoshiaki Haga, Kazutoshi Ando, Yohei Omodaka
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Publication number: 20240061372Abstract: 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: October 31, 2023Publication date: February 22, 2024Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Isao KISHI, Nao ITABASHI, Yohei HASHIMOTO, Kouji WATANABE, Makoto SOUDA
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Patent number: 11892795Abstract: An image-forming apparatus includes: a housing having an opening; a top cover configured to cover the opening; a short-range wireless communication circuit board attached to the top cover; a relay circuit board attached to the top cover; and a first wiring connecting the short-range wireless communication circuit board and the relay circuit board to each other. The short-range wireless communication circuit board includes: an antenna configured to transmit/receive radio waves; and a circuit electrically connected to the antenna. At least a part of the circuit and at least a part of the relay circuit board are overlapped with each other in an up-down direction.Type: GrantFiled: March 9, 2022Date of Patent: February 6, 2024Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Junichi Yokoi, Yohei Hashimoto
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Patent number: 11853002Abstract: 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: February 17, 2022Date of Patent: December 26, 2023Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Isao Kishi, Nao Itabashi, Yohei Hashimoto, Kouji Watanabe, Makoto Souda
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Patent number: 11809124Abstract: A cleaning unit is attachable to and detachable from a main body of an image forming apparatus including a photosensitive drum and a belt configured to contact the photosensitive drum. The cleaning unit includes: a frame; and a handle. The frame is configured to accommodate therein developing agent collected from the image forming apparatus. The handle includes: a pair of first parts; and a second part. Each of the pair of first parts extends from the frame in an extending direction perpendicular to an axial direction of the photosensitive drum in a state where the cleaning unit is attached to the main body. The pair of first parts includes a lock mechanism for locking the cleaning unit to the main body. The second part extends in the axial direction and connects the pair of first parts to each other.Type: GrantFiled: June 14, 2022Date of Patent: November 7, 2023Assignee: Brother Kogyo Kabushiki KaishaInventors: Atsushi Ozawa, Yohei Hashimoto, Hikaru Iino
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Patent number: 11579559Abstract: An image forming apparatus includes a housing, a drum cartridge, a developing cartridge including a developing roller and movable between a contact position and a spaced position, a first spacing member configured to move the developing cartridge between the contact position and the spaced position, a first cam configured to move the first spacing member, and a lock member movable between a lock position at which the photoconductive drum is locked to the housing and a lock releasing position at which the lock of the photoconductive drum with respect to the housing is released. The lock member is configured to move from the lock releasing position to the lock position by being pushed by the first spacing member.Type: GrantFiled: October 25, 2021Date of Patent: February 14, 2023Assignee: Brother Kogyo Kabushiki KaishaInventors: Wataru Yamaguchi, Yasuhiro Hosokawa, Yohei Hashimoto
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Patent number: 11579558Abstract: An image forming apparatus includes a housing having an opening, a cover movable between an open position and a closed position, a first photoconductive drum and a second photoconductive drum, a first exposing head having a first boss and rotatably coupled to the cover, a second exposing head having a second boss and rotatably coupled to the cover, and a cam rotatably coupled to each of the first exposing head and the second exposing head. The cam is configured to rotate each of the first exposing head and the second exposing head. The cam includes (i) a first elongated hole into which the first boss fits and extending a direction intersecting a movement direction in which the cam moves and (ii) a second elongated hole into which the second boss fits and extending in a direction intersecting the movement direction of the cam.Type: GrantFiled: November 2, 2021Date of Patent: February 14, 2023Assignee: Brother Kogyo Kabushiki KaishaInventors: Junichi Hiraoka, Yohei Hashimoto
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Publication number: 20230043639Abstract: The present invention relates to a cyber-physical system for optimizing a simulation model for chemical mechanical polishing based on actual measurement data of chemical mechanical polishing. The chemical mechanical polishing system includes a polishing apparatus (1) for polishing the workpiece (W) and an arithmetic system (47). The arithmetic system (47) includes a simulation model including at least a physical model configured to output an estimated polishing physical quantity including an estimated polishing rate of the workpiece (W). The arithmetic system (47) is configured to: input polishing conditions for the workpiece (W) into the simulation model; output the estimated polishing physical quantity of the workpiece (W) from the simulation model; and determine model parameters of the simulation model that bring the estimated polishing physical quantity closer to a measured polishing physical quantity of the workpiece (W).Type: ApplicationFiled: March 10, 2021Publication date: February 9, 2023Inventors: Norikazu SUZUKI, Hozumi YASUDA, Yoshihiro MOCHIZUKI, Yohei HASHIMOTO
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Publication number: 20220413428Abstract: A cleaning unit is attachable to and detachable from a main body of an image forming apparatus including a photosensitive drum and a belt configured to contact the photosensitive drum. The cleaning unit includes: a frame; and a handle. The frame is configured to accommodate therein developing agent collected from the image forming apparatus. The handle includes: a pair of first parts; and a second part. Each of the pair of first parts extends from the frame in an extending direction perpendicular to an axial direction of the photosensitive drum in a state where the cleaning unit is attached to the main body. The pair of first parts includes a lock mechanism for locking the cleaning unit to the main body. The second part extends in the axial direction and connects the pair of first parts to each other.Type: ApplicationFiled: June 14, 2022Publication date: December 29, 2022Applicant: Brother Kogyo Kabushiki KaishaInventors: Atsushi OZAWA, Yohei HASHIMOTO, Hikaru IINO
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Patent number: 11526113Abstract: A conveyance roller is configured to convey a sheet having passed through a fixing device toward a photosensitive drum. A gear train is switchable between a transmission state in which the gear train transmits power from a motor to the conveyance roller and a transmission release state in which the gear train does not transmit the power from the motor to the conveyance roller. A movement member is movable between a first position at which the movement member causes the gear train to be in the transmission state and a second position at which the movement member causes the gear train to be in the transmission release state. A cam is configured to cause a development roller to move between a contact position and a separation position. The movement member is movable between the first position and the second position in conjunction with movement of the cam.Type: GrantFiled: September 28, 2021Date of Patent: December 13, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yohei Hashimoto
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Publication number: 20220300230Abstract: An image-forming apparatus includes: a housing having an opening; a top cover configured to cover the opening; a short-range wireless communication circuit board attached to the top cover; a relay circuit board attached to the top cover; and a first wiring connecting the short-range wireless communication circuit board and the relay circuit board to each other. The short-range wireless communication circuit board includes: an antenna configured to transmit/receive radio waves; and a circuit electrically connected to the antenna. At least a part of the circuit and at least a part of the relay circuit board are overlapped with each other in an up-down direction.Type: ApplicationFiled: March 9, 2022Publication date: September 22, 2022Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Junichi YOKOI, Yohei HASHIMOTO
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Patent number: 11409228Abstract: A cam transmits and blocks light emitted from a light emitting portion. The cam moves to: a first position at which first and second cartridges are attachable to and detachable from a housing; a second position at which a first development roller contacts a first photosensitive drum, the second position being a position at which the cam has moved in a first direction from the first position; and a third position at which the first development roller is separated from the first photosensitive drum and a second development roller is separated from a second photosensitive drum, the third position being a position at which the cam has moved in the first direction from the second position. During an initial operation, based on a detection result of the sensor, a controller determines which of the first position, the second position, and the third position the cam is located at.Type: GrantFiled: June 2, 2021Date of Patent: August 9, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Wataru Yamaguchi, Yohei Hashimoto
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Publication number: 20220171331Abstract: 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: February 17, 2022Publication date: June 2, 2022Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Isao KISHI, Nao ITABASHI, Yohei HASHIMOTO, Kouji WATANABE, Makoto SOUDA
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Patent number: 11347166Abstract: A belt unit includes: a drive roller; a drive shaft having an axis defining an axial direction and rotatable together with the drive roller about the axis; a bearing rotatably supporting one end portion of the drive shaft; a driven shaft; a driven roller rotatable together with the driven shaft; an endless belt looped over the drive roller and the driven roller under tension; a first frame; and a second frame spaced away from the first frame in the axial direction. The first frame includes: a facing section supporting one end portion of the driven shaft; and a bearing holder holding the bearing. The second frame rotatably supports another end portions of the drive shaft and the driven shaft. The bearing holder is positioned closer to the second frame than the facing section is to the second frame in the axial direction.Type: GrantFiled: June 22, 2021Date of Patent: May 31, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Wataru Yamaguchi, Kazuya Kamikawa, Yohei Hashimoto
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Patent number: 11341935Abstract: An object is to enhance usability when browsing through a measurement result from a sensor on an external computer. A data relay device includes a first connection part to which one or more sensors are connected, a second connection part to which an industrial network for communication with a control device is connected, a relay memory that temporarily stores first data received from the one or more sensors connected to the first connection part to relay the first data to the control device via the second connection part, a third connection part to which a computer network for communication with an external computer is connected, a creation unit that creates display screen information for use in displaying the first data stored in the relay memory in a predetermined display form, and a provision unit that provides the display screen information to the external computer via the third connection part.Type: GrantFiled: December 4, 2020Date of Patent: May 24, 2022Assignee: KEYENCE CORPORATIONInventors: Takamasa Koyama, Yohei Hashimoto
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Publication number: 20220137547Abstract: An image forming apparatus includes a housing, a drum cartridge, a developing cartridge including a developing roller and movable between a contact position and a spaced position, a first spacing member configured to move the developing cartridge between the contact position and the spaced position, a first cam configured to move the first spacing member, and a lock member movable between a lock position at which the photoconductive drum is locked to the housing and a lock releasing position at which the lock of the photoconductive drum with respect to the housing is released. The lock member is configured to move from the lock releasing position to the lock position by being pushed by the first spacing member.Type: ApplicationFiled: October 25, 2021Publication date: May 5, 2022Applicant: Brother Kogyo Kabushiki KaishaInventors: Wataru Yamaguchi, Yasuhiro Hosokawa, Yohei Hashimoto
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Publication number: 20220137545Abstract: An image forming apparatus includes a housing having an opening, a cover movable between an open position and a closed position, a first photoconductive drum and a second photoconductive drum, a first exposing head having a first boss and rotatably coupled to the cover, a second exposing head having a second boss and rotatably coupled to the cover, and a cam rotatably coupled to each of the first exposing head and the second exposing head. The cam is configured to rotate each of the first exposing head and the second exposing head. The cam includes (i) a first elongated hole into which the first boss fits and extending a direction intersecting a movement direction in which the cam moves and (ii) a second elongated hole into which the second boss fits and extending in a direction intersecting the movement direction of the cam.Type: ApplicationFiled: November 2, 2021Publication date: May 5, 2022Applicant: Brother Kogyo Kabushiki KaishaInventors: Junichi HIRAOKA, Yohei HASHIMOTO
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Publication number: 20220100139Abstract: A conveyance roller is configured to convey a sheet having passed through a fixing device toward a photosensitive drum. A gear train is switchable between a transmission state in which the gear train transmits power from a motor to the conveyance roller and a transmission release state in which the gear train does not transmit the power from the motor to the conveyance roller. A movement member is movable between a first position at which the movement member causes the gear train to be in the transmission state and a second position at which the movement member causes the gear train to be in the transmission release state. A cam is configured to cause a development roller to move between a contact position and a separation position. The movement member is movable between the first position and the second position in conjunction with movement of the cam.Type: ApplicationFiled: September 28, 2021Publication date: March 31, 2022Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yohei HASHIMOTO
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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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Publication number: 20220049455Abstract: A cutting edge has an attachment portion and a wear portion. The attachment portion has a first thickness, which is a maximum value of a thickness between a first surface and a second surface. The wear portion includes a first portion having a third surface contiguous to the first surface and a fourth surface facing away from the third surface, and having a second thickness between the third surface and the fourth surface and smaller than the first thickness, and an edge located opposite to the attachment portion. The second portion extends on the first portion from a portion of the fourth surface toward a side opposite to the third surface, and also extends on the first portion from the edge toward the attachment portion.Type: ApplicationFiled: January 29, 2020Publication date: February 17, 2022Applicant: KOMATSU LTD.Inventors: Shintaro KOBAYASHI, Takeshi KAMIMAE, Shu TAKEDA, Akira HOSOKAWA, Yohei HASHIMOTO