Patents by Inventor Kenji Hayasaka
Kenji Hayasaka 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: 12043502Abstract: Disclosed is a loading unit for use in loading a bundle of objects to be conveyed, the loading unit being installed on a lifting member of a feeding device. The loading unit includes a first movable base on which a downstream side in a conveying direction of a bundle of objects to be conveyed is loaded, the first movable base being rotatable; and a second movable base on which an upstream side in the conveying direction of the bundle of objects is loaded, the second movable base being rotatable and disposed on a more upstream side in the conveying direction than the first movable base.Type: GrantFiled: March 19, 2021Date of Patent: July 23, 2024Assignee: RICOH COMPANY, LTD.Inventors: Kenji Hayasaka, Takashi Fukumoto
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Patent number: 11634291Abstract: A belt conveyance device includes an endless belt, a duct having a suction port, and a rectifier inside the duct. The duct is surrounded by an inner circumferential surface of the endless belt. The rectifier extends in a width direction of the endless belt perpendicular to a direction of conveyance by the endless belt.Type: GrantFiled: September 25, 2020Date of Patent: April 25, 2023Assignee: RICOH COMPANY, LTD.Inventors: Takashi Fukumoto, Kenji Hayasaka
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Patent number: 11319175Abstract: A sheet feeding device includes a sheet loader, a first conveyor, a second conveyor, and a guide. The sheet loader is configured to load a sheet bundle including a sheet with a flap. The first conveyor is configured to convey the sheet with the flap loaded on the sheet loader. The second conveyor is disposed adjacent to the first conveyor. The guide is disposed below the flap of the sheet to be conveyed, between the second conveyor and the sheet loader in a sheet conveying direction of the sheet, and is configured to guide the sheet.Type: GrantFiled: September 26, 2019Date of Patent: May 3, 2022Assignee: Ricoh Company, Ltd.Inventor: Kenji Hayasaka
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Patent number: 11279575Abstract: A sheet feeding device includes a sheet loader, a sheet feeder, and an end fence. The sheet loader is configured to load a sheet bundle including sheets. The sheet feeder is configured to feed an uppermost sheet of the sheet bundle loaded on the sheet loader. The end fence is disposed movable in a sheet feeding direction of the uppermost sheet and is configured to contact a trailing end of the sheet bundle in the sheet feeding direction to regulate a position of the trailing end of the sheet bundle. The end fence includes an elastic body configured to contact the trailing end of the sheet bundle at a portion other than at least an upper portion of the end fence.Type: GrantFiled: September 26, 2019Date of Patent: March 22, 2022Assignee: RICOH COMPANY, LTD.Inventors: Kenji Hayasaka, Takashi Fukumoto
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Patent number: 11233950Abstract: An electronic device includes an open-close detector configured to detect an open-close state indicating whether an optical path open-close device of a film camera is open or closed, a displacement detector configured to detect a displacement of a movable portion of the film camera interlocked with a movement of an operation portion of the film camera, and control circuitry. In response to a detection result of the displacement detector, the control circuitry selects a measurement mode for measuring an open time during which the optical path open-close device is open, from a plurality of operation modes of the electronic device. In the measurement mode, the control circuitry measures the open time based on the open-close state detected by the open-close detector.Type: GrantFiled: July 31, 2020Date of Patent: January 25, 2022Assignee: RICOH COMPANY, LTD.Inventors: Atsushi Ikeda, Kenji Hayasaka, Takamasa Matsumoto, Youhei Niitsuma, Toshihiro Okamoto, Kenta Takahashi, Yuichi Mikuni
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Publication number: 20210292115Abstract: Disclosed is a loading unit for use in loading a bundle of objects to be conveyed, the loading unit being installed on a lifting member of a feeding device. The loading unit includes a first movable base on which a downstream side in a conveying direction of a bundle of objects to be conveyed is loaded, the first movable base being rotatable; and a second movable base on which an upstream side in the conveying direction of the bundle of objects is loaded, the second movable base being rotatable and disposed on a more upstream side in the conveying direction than the first movable base.Type: ApplicationFiled: March 19, 2021Publication date: September 23, 2021Applicant: Ricoh Company, Ltd.Inventors: Kenji HAYASAKA, Takashi FUKUMOTO
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Publication number: 20210127047Abstract: An electronic device includes an open-close detector configured to detect an open-close state indicating whether an optical path open-close device of a film camera is open or closed, a displacement detector configured to detect a displacement of a movable portion of the film camera interlocked with a movement of an operation portion of the film camera, and control circuitry. In response to a detection result of the displacement detector, the control circuitry selects a measurement mode for measuring an open time during which the optical path open-close device is open, from a plurality of operation modes of the electronic device. In the measurement mode, the control circuitry measures the open time based on the open-close state detected by the open-close detector.Type: ApplicationFiled: July 31, 2020Publication date: April 29, 2021Inventors: Atsushi IKEDA, Kenji HAYASAKA, Takamasa MATSUMOTO, Youhei NIITSUMA, Toshihiro OKAMOTO, Kenta TAKAHASHI, Yuichi MIKUNI
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Publication number: 20210094778Abstract: A belt conveyance device includes an endless belt, a duct having a suction port, and a rectifier inside the duct. The duct is surrounded by an inner circumferential surface of the endless belt. The rectifier extends in a width direction of the endless belt perpendicular to a direction of conveyance by the endless belt.Type: ApplicationFiled: September 25, 2020Publication date: April 1, 2021Inventors: Takashi FUKUMOTO, Kenji HAYASAKA
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Patent number: 10861488Abstract: According to one embodiment, a disk device includes a first actuator assembly on a support shaft via a first bearing unit, and a second actuator assembly on the support shaft via a second bearing unit. The first bearing unit includes a first shaft on the support shaft, a first sleeve fixed to the first actuator block, and a bearing between the first shaft and the first sleeve. The second bearing unit includes a second shaft on the support shaft, separated from the first shaft, a second sleeve fixed to the second actuator block, and a bearing between the second shaft and the second sleeve. One axial end of the first shaft faces one axial end of the second shaft.Type: GrantFiled: August 6, 2019Date of Patent: December 8, 2020Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devies & Storage CorporationInventors: Kenji Hayasaka, Hisashi Hasegawa
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Patent number: 10825482Abstract: A magnetic disk device includes a casing having a box-like base that has a bottom wall and a cover that has a first surface facing the bottom wall, a magnetic disk provided in the casing, a head configured to write data to the magnetic disk and to read data from the magnetic disk, an actuator assembly that supports the head in the casing, a conductive container on the first surface of the cover, and a conductive body in contact with the conductive container and the cover.Type: GrantFiled: September 2, 2019Date of Patent: November 3, 2020Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Hirofumi Suzuki, Kouichi Toukairin, Hisashi Hasegawa, Masaya Kudo, Kenji Hayasaka, Yusuke Nojima
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Publication number: 20200302958Abstract: According to one embodiment, a disk device includes a first actuator assembly on a support shaft via a first bearing unit, and a second actuator assembly on the support shaft via a second bearing unit. The first bearing unit includes a first shaft on the support shaft, a first sleeve fixed to the first actuator block, and a bearing between the first shaft and the first sleeve. The second bearing unit includes a second shaft on the support shaft, separated from the first shaft, a second sleeve fixed to the second actuator block, and a bearing between the second shaft and the second sleeve. One axial end of the first shaft faces one axial end of the second shaft.Type: ApplicationFiled: August 6, 2019Publication date: September 24, 2020Inventors: Kenji Hayasaka, Hisashi Hasegawa
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Publication number: 20200286527Abstract: A magnetic disk device includes a casing having a box-like base that has a bottom wall and a cover that has a first surface facing the bottom wall, a magnetic disk provided in the casing, a head configured to write data to the magnetic disk and to read data from the magnetic disk, an actuator assembly that supports the head in the casing, a conductive container on the first surface of the cover, and a conductive body in contact with the conductive container and the cover.Type: ApplicationFiled: September 2, 2019Publication date: September 10, 2020Inventors: Hirofumi SUZUKI, Kouichi TOUKAIRIN, Hisashi HASEGAWA, Masaya KUDO, Kenji HAYASAKA, Yusuke NOJIMA
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Publication number: 20200102166Abstract: A sheet feeding device includes a sheet loader, a sheet feeder, and an end fence. The sheet loader is configured to load a sheet bundle including sheets. The sheet feeder is configured to feed an uppermost sheet of the sheet bundle loaded on the sheet loader. The end fence is disposed movable in a sheet feeding direction of the uppermost sheet and is configured to contact a trailing end of the sheet bundle in the sheet feeding direction to regulate a position of the trailing end of the sheet bundle. The end fence includes an elastic body configured to contact the trailing end of the sheet bundle at a portion other than at least an upper portion of the end fence.Type: ApplicationFiled: September 26, 2019Publication date: April 2, 2020Applicant: Ricoh Company, Ltd.Inventors: Kenji HAYASAKA, Takashi FUKUMOTO
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Publication number: 20200102169Abstract: A sheet feeding device includes a sheet loader, a first conveyor, a second conveyor, and a guide. The sheet loader is configured to load a sheet bundle including a sheet with a flap. The first conveyor is configured to convey the sheet with the flap loaded on the sheet loader. The second conveyor is disposed adjacent to the first conveyor. The guide is disposed below the flap of the sheet to be conveyed, between the second conveyor and the sheet loader in a sheet conveying direction of the sheet, and is configured to guide the sheet.Type: ApplicationFiled: September 26, 2019Publication date: April 2, 2020Applicant: Ricoh Company, Ltd.Inventor: Kenji Hayasaka
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Patent number: 9708140Abstract: A sheet feeding device includes a tray main body and a cover member. The tray main body has a first mount surface. The cover member is rotatably connected to an end of the tray main body on the side opposite to the sheet feeding side so that the cover member can move rotationally between a closed position where the cover member covers the first mount surface and an open position where the first mount surface is exposed, and has a second mount surface on which a sheet is mounted over the first mount surface when cover member is in the open position. The cover member includes an opening for sheet insertion which penetrates through from an upper surface to a bottom surface of the cover member so that a sheet can be inserted onto the first mount surface when the cover member is in the closed position.Type: GrantFiled: March 10, 2016Date of Patent: July 18, 2017Assignee: RICOH COMPANY, LIMITEDInventors: Kazuki Seto, Kenji Hayasaka, Kazuki Morita, Tomoyuki Okada, Hisayoshi Sugawara
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Patent number: 9487370Abstract: A sheet material conveying device includes: a sheet material housing unit; a sheet material conveying unit that conveys each sheet material to a predetermined conveyance target position; a separating/feeding unit that separates a sheet material from sheet materials in the sheet material housing unit and conveys the separated sheet material alone to the sheet material conveying unit; a multi-feed detecting unit that detects whether multi-feed occurs in which a plurality of sheet materials are fed from the separating/feeding unit to the sheet material conveying unit; and an internal sheet material detecting unit that detects presence of the sheet material in the sheet material conveying unit. The sheet material conveying device performs multi-feed failure detection control for detecting whether a failure occurs in the multi-feed detecting unit before notification of a detection result of the internal sheet material detecting unit.Type: GrantFiled: August 18, 2014Date of Patent: November 8, 2016Assignee: RICOH COMPANY, LIMITEDInventors: Hiroaki Utagawa, Takanori Ohta, Takashi Nakano, Takashi Fukumoto, Kenji Hayasaka, Joji Akiyama, Masataka Fukuchi
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Publication number: 20160272443Abstract: A sheet feeding device includes a tray main body and a cover member. The tray main body has a first mount surface. The cover member is rotatably connected to an end of the tray main body on the side opposite to the sheet feeding side so that the cover member can move rotationally between a closed position where the cover member covers the first mount surface and an open position where the first mount surface is exposed, and has a second mount surface on which a sheet is mounted over the first mount surface when cover member is in the open position. The cover member includes an opening for sheet insertion which penetrates through from an upper surface to a bottom surface of the cover member so that a sheet can be inserted onto the first mount surface when the cover member is in the closed position.Type: ApplicationFiled: March 10, 2016Publication date: September 22, 2016Applicant: Ricoh Company, Ltd.Inventors: Kazuki SETO, Kenji HAYASAKA, Kazuki MORITA, Tomoyuki OKADA, Hisayoshi SUGAWARA
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Publication number: 20150048566Abstract: A sheet material conveying device includes: a sheet material housing unit; a sheet material conveying unit that conveys each sheet material to a predetermined conveyance target position; a separating/feeding unit that separates a sheet material from sheet materials in the sheet material housing unit and conveys the separated sheet material alone to the sheet material conveying unit; a multi-feed detecting unit that detects whether multi-feed occurs in which a plurality of sheet materials are fed from the separating/feeding unit to the sheet material conveying unit; and an internal sheet material detecting unit that detects presence of the sheet material in the sheet material conveying unit. The sheet material conveying device performs multi-feed failure detection control for detecting whether a failure occurs in the multi-feed detecting unit before notification of a detection result of the internal sheet material detecting unit.Type: ApplicationFiled: August 18, 2014Publication date: February 19, 2015Applicant: RICOH COMPANY, LIMITEDInventors: Hiroaki UTAGAWA, Takanori OHTA, Takashi NAKANO, Takashi FUKUMOTO, Kenji HAYASAKA, Joji AKIYAMA, Masataka FUKUCHI
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Patent number: 8925913Abstract: A sheet conveying device such as a feed mechanism includes a pick-up roller and a cover member. The pick-up roller feeds, into an apparatus, a sheet such as a document on a placing table such as a document placing table on which the sheet is placed. The cover member such as a pick-up cover covers the pick-up roller. The cover member is supported at both ends thereof on a shaft of the pick-up roller or on shaft bearings that receive the shaft of the pick-up roller.Type: GrantFiled: May 30, 2013Date of Patent: January 6, 2015Assignee: Ricoh Company, LimitedInventors: Hiroshi Kubo, Shinya Kitaoka, Takehisa Shimazu, Takeshi Akai, Takuma Ariga, Fumiyuki Heishi, Michitaka Suzuki, Yoshito Suzuki, Norio Kimura, Hiroaki Utagawa, Kenji Hayasaka, Jun Yamada, Kenichiro Morita, Ikuhisa Okamoto, Satoshi Saito
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Patent number: 8896891Abstract: A document conveying device includes a document table on which a stack of document sheets is placed; a rotating shaft member detachably provided on a main body of the document conveying device; a feeding member configured to contact and feed a topmost sheet of the stack of document sheets, the feeding member being attached to the rotating shaft member via a driving force transmitting member; a separating unit configured to separate the topmost sheet from one or more sheets that are fed together with the topmost sheet, rotating members rotatably attached to the rotating shaft member; a holding member configured to hold the feeding member and the driving force transmitting member; and a rotating member position restricting unit configured to restrict a position of the rotating members other than the holding member to a given predetermined position with reference to a position of the holding member.Type: GrantFiled: March 14, 2013Date of Patent: November 25, 2014Assignee: Ricoh Company, LimitedInventors: Fumiyuki Heishi, Hiroshi Kubo, Takashi Fujii, Shinya Kitaoka, Takeshi Akai, Takehisa Shimazu, Takuma Ariga, Michitaka Suzuki, Yoshito Suzuki, Jun Yamada, Satoshi Saito, Kenichiro Morita, Ikuhisa Okamoto, Kenji Hayasaka, Hiroaki Utagawa