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).

  • Patent number: 11990420
    Abstract: An electromagnetic wave shielding sheet according to the present embodiments is an electromagnetic wave shielding sheet for forming an electromagnetic wave shielding layer used for a component-mounting substrate including a substrate, an electronic component and an electromagnetic wave shielding layer, in which the electromagnetic wave shielding sheet includes at least one of a conductive layer before thermal pressing of the electromagnetic wave reflection layer and a conductive layer before thermal pressing of the electromagnetic wave absorption layer, the conductive layer before thermal pressing of the electromagnetic wave reflection layer includes a binder resin and a conductive filler, and the conductive layer before thermal pressing of the electromagnetic wave absorption layer includes a binder resin and an electromagnetic wave absorption filler. The Young's modulus of the conductive layer at 23° C. is set to 10 to 700 MPa.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: May 21, 2024
    Assignees: ARTIENCE CO., LTD., TOYOCHEM CO., LTD.
    Inventors: Kazunori Matsudo, Ryota Umezawa, Kenji Ando, Tsutomu Hayasaka
  • Patent number: 11951734
    Abstract: A recording device, when recording is performed on a predetermined type target recording medium stored in a storage unit, drives a surface potential adjustment unit so that a surface potential is a positive potential within a predetermined range. By configuring such a recording device, it is possible to suppress adhesion of ink to an ejecting unit, and occurrence of an ink ejection failure can be suppressed.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: April 9, 2024
    Assignee: Seiko Epson Corporation
    Inventors: Kenji Otokita, Nobuyuki Hayasaka
  • Patent number: 11634291
    Abstract: 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: Grant
    Filed: September 25, 2020
    Date of Patent: April 25, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takashi Fukumoto, Kenji Hayasaka
  • Patent number: 11319175
    Abstract: 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: Grant
    Filed: September 26, 2019
    Date of Patent: May 3, 2022
    Assignee: Ricoh Company, Ltd.
    Inventor: Kenji Hayasaka
  • Patent number: 11279575
    Abstract: 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: Grant
    Filed: September 26, 2019
    Date of Patent: March 22, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kenji Hayasaka, Takashi Fukumoto
  • Patent number: 11233950
    Abstract: 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: Grant
    Filed: July 31, 2020
    Date of Patent: January 25, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Ikeda, Kenji Hayasaka, Takamasa Matsumoto, Youhei Niitsuma, Toshihiro Okamoto, Kenta Takahashi, Yuichi Mikuni
  • Publication number: 20210292115
    Abstract: 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: Application
    Filed: March 19, 2021
    Publication date: September 23, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Kenji HAYASAKA, Takashi FUKUMOTO
  • Publication number: 20210127047
    Abstract: 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: Application
    Filed: July 31, 2020
    Publication date: April 29, 2021
    Inventors: Atsushi IKEDA, Kenji HAYASAKA, Takamasa MATSUMOTO, Youhei NIITSUMA, Toshihiro OKAMOTO, Kenta TAKAHASHI, Yuichi MIKUNI
  • Publication number: 20210094778
    Abstract: 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: Application
    Filed: September 25, 2020
    Publication date: April 1, 2021
    Inventors: Takashi FUKUMOTO, Kenji HAYASAKA
  • Patent number: 10861488
    Abstract: 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: Grant
    Filed: August 6, 2019
    Date of Patent: December 8, 2020
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devies & Storage Corporation
    Inventors: Kenji Hayasaka, Hisashi Hasegawa
  • Patent number: 10825482
    Abstract: 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: Grant
    Filed: September 2, 2019
    Date of Patent: November 3, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Hirofumi Suzuki, Kouichi Toukairin, Hisashi Hasegawa, Masaya Kudo, Kenji Hayasaka, Yusuke Nojima
  • Publication number: 20200302958
    Abstract: 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: Application
    Filed: August 6, 2019
    Publication date: September 24, 2020
    Inventors: Kenji Hayasaka, Hisashi Hasegawa
  • Publication number: 20200286527
    Abstract: 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: Application
    Filed: September 2, 2019
    Publication date: September 10, 2020
    Inventors: Hirofumi SUZUKI, Kouichi TOUKAIRIN, Hisashi HASEGAWA, Masaya KUDO, Kenji HAYASAKA, Yusuke NOJIMA
  • Publication number: 20200102166
    Abstract: 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: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Kenji HAYASAKA, Takashi FUKUMOTO
  • Publication number: 20200102169
    Abstract: 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: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventor: Kenji Hayasaka
  • Patent number: 9708140
    Abstract: 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: Grant
    Filed: March 10, 2016
    Date of Patent: July 18, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Kazuki Seto, Kenji Hayasaka, Kazuki Morita, Tomoyuki Okada, Hisayoshi Sugawara
  • Patent number: 9487370
    Abstract: 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: Grant
    Filed: August 18, 2014
    Date of Patent: November 8, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Hiroaki Utagawa, Takanori Ohta, Takashi Nakano, Takashi Fukumoto, Kenji Hayasaka, Joji Akiyama, Masataka Fukuchi
  • Publication number: 20160272443
    Abstract: 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: Application
    Filed: March 10, 2016
    Publication date: September 22, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Kazuki SETO, Kenji HAYASAKA, Kazuki MORITA, Tomoyuki OKADA, Hisayoshi SUGAWARA
  • Publication number: 20150048566
    Abstract: 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: Application
    Filed: August 18, 2014
    Publication date: February 19, 2015
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Hiroaki UTAGAWA, Takanori OHTA, Takashi NAKANO, Takashi FUKUMOTO, Kenji HAYASAKA, Joji AKIYAMA, Masataka FUKUCHI
  • Patent number: 8925913
    Abstract: 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: Grant
    Filed: May 30, 2013
    Date of Patent: January 6, 2015
    Assignee: Ricoh Company, Limited
    Inventors: 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