Patents by Inventor Hiroyuki Shimada

Hiroyuki Shimada 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: 11012004
    Abstract: A vibration actuator includes a vibrator including a shaft, an output transmission member penetrated by the shaft, and configured to rotate about the axis of the shall, and a fixed member configured not to move relative to the shaft and configured to move relative to the output transmission member. The fixed member includes a base portion and a projection portion protruding from the base portion to the output transmission member side, the vibration actuator includes a pressure reception member between the base portion and the output transmission member in an axial direction of the shaft, and wherein the projection portion and the output transmission member are in contact with each other in a direction orthogonal to the axial direction of the shaft, and the projection portion and the output transmission member are not in contact with each other in the axial direction of the shaft.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 18, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Shimada, Hiroyuki Seki
  • Patent number: 10942475
    Abstract: A fixing device includes a fixing rotator that rotates and includes an inner face. A pressure rotator is disposed opposite the fixing rotator and rotates. A nip former sandwiches the fixing rotator together with the pressure rotator to form a nip between the fixing rotator and the pressure rotator. The nip former includes an outer face disposed opposite the inner face of the fixing rotator. The inner face of the fixing rotator and the outer face of the nip former sandwich a lubricant. At least one of the inner face of the fixing rotator and the outer face of the nip former includes a projection having a volume smaller than 0.3 ml/m2 and a recess having a spatial volume greater than 0.08 ml/m2. The volume and the spatial volume are three-dimensional surface roughness parameters, respectively, defined by the International Organization for Standardization 25178 standard in an initial state before the fixing rotator rotates.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: March 9, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ippei Fujimoto, Yoshiki Yamaguchi, Takashi Seto, Hiroyuki Shimada
  • Patent number: 10928763
    Abstract: A fixing device includes a rotator that rotates and a fixing device cover. The fixing device cover includes an interior face that is disposed opposite the rotator, a first aperture that is disposed opposite the rotator, and a recess that surrounds the first aperture and extends in a gravity direction. A frame is interposed between the interior face of the fixing device cover and the rotator. The frame includes a second aperture that is disposed opposite the rotator and the first aperture. A rib is mounted on the frame and extends from the second aperture toward the interior face of the fixing device cover.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: February 23, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Shimada, Hiroshi Yoshinaga, Hitoshi Fujiwara
  • Publication number: 20210041811
    Abstract: A fixing device includes a flexible endless belt, a pressure rotator disposed outside the belt and facing the belt, a nip formation pad disposed inside a loop of the belt and configured to form a fixing nip between the belt and the pressure rotator, a heater configured to heat the belt, a flange configured to support an end portion of the belt, a first lubricant, and a second lubricant. The first lubricant is applied between the nip formation pad and an inner surface of the belt. The second lubricant is applied between the flange and the inner surface of the belt. The second lubricant has a temperature characteristic different from a temperature characteristic of the first lubricant.
    Type: Application
    Filed: July 8, 2020
    Publication date: February 11, 2021
    Inventor: Hiroyuki SHIMADA
  • Publication number: 20210026279
    Abstract: A nip formation member is configured to be disposed inside a loop of a rotatable belt. The nip formation member includes a base, a thermal equalizer, an attachment, and a fastener. The base has a bottomed fastening hole. The thermal equalizer is configured to face the belt and a surface of the base not having the bottomed fastening hole. The thermal equalizer has a higher thermal conductivity than the base. The attachment has a fastening hole and face another surface of the base having the bottomed fastening hole. The attachment is configured to fix and position the base and the thermal equalizer. The fastener is fastened to the bottomed fastening hole of the base through the fastening hole of the attachment from the attachment.
    Type: Application
    Filed: June 23, 2020
    Publication date: January 28, 2021
    Inventors: Yoshiharu Takahashi, Hiroyuki Shimada, Hitoshi Fujiwara
  • Patent number: 10895834
    Abstract: A fixing device that includes a rotatable endless fixing member, a fixing heat source which heats the fixing member, a pressure member provided on the outside of the fixing member and facing the fixing member, a nip forming member provided inside the fixing member and forming a fixing nip between the fixing member and the pressure member, a nip forming support member for supporting the nip forming member, a high-thermal-conductive member provided between the fixing member and the nip forming member, an adhesive provided between the high-thermal-conductive member and the nip forming member. The thermal conductivity of the adhesive is larger than the thermal conductivity of the nip forming member and lower than the thermal conductivity of the high-thermal-conductive member.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: January 19, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohei Matsuda, Hiroyuki Shimada
  • Patent number: 10884365
    Abstract: A fixing device includes an endless fixing rotator, a heater, a nip formation pad, and a pressure rotator. The heater is disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. The nip formation pad is disposed opposite the inner circumferential surface of the fixing rotator that is slidable over the nip formation pad. The pressure rotator is configured to press against the nip formation pad via the fixing rotator to form a fixing nip through which a recording medium bearing a toner image is conveyed while being sandwiched between the fixing rotator and the pressure rotator. The nip formation pad includes a base and a thermal equalizer having a thermal conductivity higher than a thermal conductivity of the base. The nip formation pad has a nip face opposite the fixing nip. The thermal equalizer is disposed in at least part of the nip face.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: January 5, 2021
    Assignee: Ricoh Company, Ltd.
    Inventor: Hiroyuki Shimada
  • Publication number: 20200409292
    Abstract: A fixing device includes a fixing rotator that rotates and includes an inner face. A pressure rotator is disposed opposite the fixing rotator and rotates. A nip former sandwiches the fixing rotator together with the pressure rotator to form a nip between the fixing rotator and the pressure rotator. The nip former includes an outer face disposed opposite the inner face of the fixing rotator. The inner face of the fixing rotator and the outer face of the nip former sandwich a lubricant. At least one of the inner face of the fixing rotator and the outer face of the nip former includes a projection having a volume smaller than 0.3 ml/m2 and a recess having a spatial volume greater than 0.08 ml/m2. The volume and the spatial volume are three-dimensional surface roughness parameters, respectively, defined by the International Organization for Standardization 25178 standard in an initial state before the fixing rotator rotates.
    Type: Application
    Filed: April 28, 2020
    Publication date: December 31, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Ippei FUJIMOTO, Yoshiki YAMAGUCHI, Takashi SETO, Hiroyuki SHIMADA
  • Publication number: 20200341419
    Abstract: A fixing device includes a rotator that rotates and a fixing device cover. The fixing device cover includes an interior face that is disposed opposite the rotator, a first aperture that is disposed opposite the rotator, and a recess that surrounds the first aperture and extends in a gravity direction. A frame is interposed between the interior face of the fixing device cover and the rotator. The frame includes a second aperture that is disposed opposite the rotator and the first aperture. A rib is mounted on the frame and extends from the second aperture toward the interior face of the fixing device cover.
    Type: Application
    Filed: April 10, 2020
    Publication date: October 29, 2020
    Inventors: Hiroyuki SHIMADA, Hiroshi YOSHINAGA, Hitoshi FUJIWARA
  • Patent number: 10782415
    Abstract: A timing signal generation device includes: an output terminal that outputs a standard signal; a first standard signal generation unit that generates a first standard signal based on a reference signal input from outside; a second standard signal generation unit that generates a second standard signal based on a signal output from an oscillator; and a control unit that switches the standard signal output from the output terminal from the first standard signal to the second standard signal based on prior information indicating that accuracy of the reference signal deteriorates.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: September 22, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Maki, Hiroyuki Shimada
  • Publication number: 20200285180
    Abstract: A fixing device that includes a rotatable endless fixing member, a fixing heat source which heats the fixing member, a pressure member provided on the outside of the fixing member and facing the fixing member, a nip forming member provided inside the fixing member and forming a fixing nip between the fixing member and the pressure member, a nip forming support member for supporting the nip forming member, a high-thermal-conductive member provided between the fixing member and the nip forming member, an adhesive provided between the high-thermal-conductive member and the nip forming member. The thermal conductivity of the adhesive is larger than the thermal conductivity of the nip forming member and lower than the thermal conductivity of the high-thermal-conductive member.
    Type: Application
    Filed: February 19, 2020
    Publication date: September 10, 2020
    Inventors: Ryohei MATSUDA, Hiroyuki SHIMADA
  • Publication number: 20200278627
    Abstract: A fixing device includes an endless fixing rotator, a heater, a nip formation pad, and a pressure rotator. The heater is disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. The nip formation pad is disposed opposite the inner circumferential surface of the fixing rotator that is slidable over the nip formation pad. The pressure rotator is configured to press against the nip formation pad via the fixing rotator to form a fixing nip through which a recording medium bearing a toner image is conveyed while being sandwiched between the fixing rotator and the pressure rotator. The nip formation pad includes a base and a thermal equalizer having a thermal conductivity higher than a thermal conductivity of the base. The nip formation pad has a nip face opposite the fixing nip. The thermal equalizer is disposed in at least part of the nip face.
    Type: Application
    Filed: January 8, 2020
    Publication date: September 3, 2020
    Inventor: Hiroyuki SHIMADA
  • Patent number: 10699859
    Abstract: A switch may include a movable board and a pole board having an inner surface on which a fixed contact point is exposed, the inner surface facing the movable board. A movable contact point may be supported by the movable board and may include a plurality of contact pieces making resilient contact with the inner surface of the pole board. The switch may also include an output terminal corresponding to the fixed contact point. The movable contact point and the fixed contact point may come in contact with each other when a position of the movable contact point is changed via a displacement of the movable board. The fixed contact point and the output terminal may be connected via a board having a disconnection detection circuit. The board may be enclosed in an insulating seal material.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: June 30, 2020
    Assignee: Valeo Japan Co., Ltd.
    Inventor: Hiroyuki Shimada
  • Publication number: 20200203747
    Abstract: Provided is a thin-film laminate structure of mixed ionic-electronic conductive electrolyte and electrode which, when used as a solid oxide cell electrolyte, enables the ionic transference number to be increased even without using a costly noble metal. The laminate structure of mixed ionic-electronic conductive electrolyte and electrode comprises a dense electrolyte layer (1), a porous electrolyte layer (2), and a porous electrode (3). The dense electrolyte layer (1) has a film thickness of 1 to 15 ?m and a relative density of 95 to 100 vol %, and contains a first oxide having mixed ionic-electronic conductivity. The porous electrolyte layer (2) is laminated on the dense electrolyte layer (1), has a film thickness of 1 to 10 ?m and a relative density of 30 to 90 vol %, and contains a second oxide having mixed ionic-electronic conductivity. The porous electrode (3) is laminated on the porous electrolyte layer.
    Type: Application
    Filed: May 18, 2018
    Publication date: June 25, 2020
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroyuki SHIMADA, Toshiaki YAMAGUCHI
  • Patent number: 10691049
    Abstract: A fixing device includes a fixing rotator and a pressure rotator that is disposed opposite the fixing rotator. A nip former is disposed inside a loop formed by the fixing rotator and disposed opposite the pressure rotator via the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The fixing rotator slides over the nip former. A flange supports the fixing rotator at both lateral ends of the fixing rotator in a longitudinal direction of the fixing rotator. The nip former includes a base and a thermal conductor that has a thermal conductivity greater than a thermal conductivity of the base. The base is greater than the thermal conductor in the longitudinal direction of the fixing rotator. The base includes a groove that is disposed outboard at least from the thermal conductor in the longitudinal direction of the fixing rotator.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: June 23, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ippei Fujimoto, Hiroyuki Shimada, Yoshiki Yamaguchi, Takashi Seto, Takayuki Seki
  • Publication number: 20200067120
    Abstract: An electrolyte of a solid oxide cell is required to be capable of suppressing both gas cross-leak and electron leak. In addition, it is important from the viewpoint of a reduction in material costs and in the electric resistance of the electrolyte that the electrolyte is made into a thin film and that no expensive noble metal is used. The present invention provides a thin-film-shaped proton conducting electrolyte capable of suppressing both gas cross-leak and electron leak, a solid oxide cell using the proton conducting electrolyte, and a manufacturing method for the proton conducting electrolyte and the solid oxide cell. A proton conducting electrolyte using an oxide material having proton conductivity is provided. The proton conducting electrolyte includes a first portion containing Me (Me=at least any one of Ti, Mn, Fe, Co, Ni, and Cu), and a second portion different in Me content from the first portion.
    Type: Application
    Filed: February 27, 2018
    Publication date: February 27, 2020
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroyuki SHIMADA, Toshiaki YAMAGUCHI
  • Patent number: 10571837
    Abstract: A fixing device includes a fixing rotator that is flexible, endless, and rotatable. A heater heats the fixing rotator. A pressure rotator is disposed opposite the fixing rotator. A nip former defines a fixing nip between the fixing rotator and the pressure rotator. A support supports the nip former. The nip former includes a back face that contacts the support and has a nonlinear shape in a longitudinal direction of the nip former.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 25, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiki Yamaguchi, Ippei Fujimoto, Hiroyuki Shimada, Takayuki Seki, Takashi Seto, Yoshiyuki Fukuda, Hiroshi Yoshinaga
  • Patent number: D882653
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: April 28, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Machiko Abe, Hiroyuki Shimada, Kazuya Yano
  • Patent number: D888786
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: June 30, 2020
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Machiko Abe, Hiroyuki Shimada, Kazuya Yano
  • Patent number: D910093
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 9, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Machiko Abe, Hiroyuki Shimada, Kazuya Yano