Patents by Inventor Akihiro Fujiwara

Akihiro Fujiwara 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).

  • Publication number: 20190376696
    Abstract: A heat exchanger according to an embodiment of the present disclosure and an air conditioner having the same include a heat transfer tube through which a refrigerant passes, a fin having a mounting hole in which the heat transfer tube is installed, and a fin collar extending from the mounting hole and being in contact with the heat transfer tube by the expansion of the heat transfer tube, wherein the fin collar includes a base portion provided adjacent to the fin and extending to be bent at a first curvature radius, and a distal end located on the opposite side of the base portion and extending to be bent at a second curvature radius smaller than the first curvature radius.
    Type: Application
    Filed: February 20, 2018
    Publication date: December 12, 2019
    Inventors: Sang mu LEE, Hyun young KIM, Akihiro FUJIWARA
  • Patent number: 10488817
    Abstract: A cartridge mountable to and dismountable from a main assembly of an image forming apparatus includes a memory, a guide configured to guide a portion-to-be-guided provided in the main assembly and to guide a main assembly contact provided in the main assembly to a memory contact of the memory when the cartridge is mounted in the main assembly, and a grip portion. The guide is provided at a bottom of the cartridge when the cartridge is hung by gripping the grip portion and constitutes a part of a supporting portion configured to support the cartridge when the cartridge is placed on a horizontal placement surface. The guide has a chamfered surface formed by being chamfered. When the cartridge is supported at the supporting portion, the chamfered surface opposes the horizontal placement surface, and a surface of the memory contact is inclined with respect to the horizontal placement surface.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: November 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Fujiwara, Tadashi Horikawa, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguchi
  • Patent number: 10452002
    Abstract: A developing device includes a rotatable developer bearing member, a regulation member configured to regulate a thickness of the developer borne on the surface of the developer bearing member, a frame configured to support the developer bearing member, the frame including a recess in an opposed surface opposed to the regulation member, the recess being recessed in a direction away from the regulation member and extending from a center portion toward both end portions in the rotation axis direction, a width, in the orthogonal direction, of the recess in both the end portions increasing gradually as distance from the center portion in the rotation axis direction increases, and a sealing member provided in the recess to seal a gap between the regulation member and the frame, the sealing member being formed by ejecting thermally molted resin into the recess.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Fujiwara, Naoki Maeda, Daisuke Makiguchi
  • Publication number: 20190227480
    Abstract: A cartridge mountable to and dismountable from a main assembly of an image forming apparatus includes a memory, a guide configured to guide a portion-to-be-guided provided in the main assembly and to guide a main assembly contact provided in the main assembly to a memory contact of the memory when the cartridge is mounted in the main assembly, and a grip portion. The guide is provided at a bottom of the cartridge when the cartridge is hung by gripping the grip portion and constitutes a part of a supporting portion configured to support the cartridge when the cartridge is placed on a horizontal placement surface. The guide has a chamfered surface formed by being chamfered. When the cartridge is supported at the supporting portion, the chamfered surface opposes the horizontal placement surface, and a surface of the memory contact is inclined with respect to the horizontal placement surface.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 25, 2019
    Inventors: Akihiro Fujiwara, Tadashi Horikawa, Naoki Matsumaru, Ryuta Murakami, Daisuke Makiguchi
  • Patent number: 10261443
    Abstract: A developer container includes a first sheet member installed on a rotation shaft disposed in a developer containing portion and transporting the developer to a developer carrying member, and a second sheet member installed on the rotation shaft and rotating in the same phase as the first sheet member. One end of the first sheet member and one end of the second sheet member are fixed to the rotation shaft so as to rotate in the same phase, and the other ends of the first and second sheet members are free ends. When the rotation shaft rotates in a state in which at least a part of the developer elevated by the first sheet member is positioned above the rotation shaft, the second sheet member rotates on the downstream side of the first sheet member, so as to control falling of developer on the first sheet member.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 16, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akihiro Fujiwara, Tsukasa Abe
  • Publication number: 20190101851
    Abstract: A developing device includes a rotatable developer bearing member, a regulation member configured to regulate a thickness of the developer borne on the surface of the developer bearing member, a frame configured to support the developer bearing member, the frame including a recess in an opposed surface opposed to the regulation member, the recess being recessed in a direction away from the regulation member and extending from a center portion toward both end portions in the rotation axis direction, a width, in the orthogonal direction, of the recess in both the end portions increasing gradually as distance from the center portion in the rotation axis direction increases, and a sealing member provided in the recess to seal a gap between the regulation member and the frame, the sealing member being formed by ejecting thermally molted resin into the recess.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Akihiro Fujiwara, Naoki Maeda, Daisuke Makiguchi
  • Patent number: 10048622
    Abstract: A developer container includes a conveyance member having at least a first sheet member and a second sheet member and configured to convey the developer, a deformation portion provided to contact the first sheet member and configured to elastically deform the first sheet member, and a release portion configured to release elastic deformation of the first sheet member to cause the developer on the first sheet member to fly toward an opening, wherein a containing chamber includes a recessed portion as viewed in a lengthwise direction of the containing chamber and wherein the second sheet member is in contact with a wall inside the recessed portion when the developer on the first sheet member is positioned at the release portion.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: August 14, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsukasa Abe, Tatsuro Harada, Akihiro Fujiwara
  • Publication number: 20180120738
    Abstract: A developer container includes a second sheet member 23c that is installed on a rotation shaft 23a and rotates in the same phase as a first sheet member 23b, wherein when the rotation shaft 23a rotates in a state in which at least a part of the developer elevated by the first sheet member 23b is positioned above the rotation shaft 23a, the second sheet member 23b rotates on the downstream side of the first sheet member 23b, in the rotating direction of the rotation shaft 23a so as to control the falling of developer on the first sheet member 23b.
    Type: Application
    Filed: October 25, 2017
    Publication date: May 3, 2018
    Inventors: Akihiro Fujiwara, Tsukasa Abe
  • Patent number: 9927737
    Abstract: There is provided a developing apparatus including a conveyance member configured to bend in contact with an inner wall of a conveyance chamber and convey developer, a portion configured to bend the conveyance member, and a first releasing portion configured to release the bending of the conveyance member, a deforming portion configured to bend the conveyance member moved and released from the first releasing portion, and a second releasing portion configured to release the bending of the conveyance member on the downstream side of the deforming portion in the rotational direction of the conveyance member.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: March 27, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuyoshi Yoshida, Shuhei Kawasaki, Hideki Kakuta, Akihiro Fujiwara
  • Publication number: 20180039204
    Abstract: A developer container includes a conveyance member having at least a first sheet member and a second sheet member and configured to convey the developer, a deformation portion provided to contact the first sheet member and configured to elastically deform the first sheet member, and a release portion configured to release elastic deformation of the first sheet member to cause the developer on the first sheet member to fly toward an opening, wherein a containing chamber includes a recessed portion as viewed in a lengthwise direction of the containing chamber and wherein the second sheet member is in contact with a wall inside the recessed portion when the developer on the first sheet member is positioned at the release portion.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 8, 2018
    Inventors: Tsukasa Abe, Tatsuro Harada, Akihiro Fujiwara
  • Patent number: 9811025
    Abstract: A developer container includes a conveyance member having at least a first sheet member and a second sheet member and configured to convey the developer, a deformation portion provided to contact the first sheet member and configured to elastically deform the first sheet member, and a release portion configured to release elastic deformation of the first sheet member to cause the developer on the first sheet member to fly toward an opening, wherein a containing chamber includes a recessed portion as viewed in a lengthwise direction of the containing chamber and wherein the second sheet member is in contact with a wall inside the recessed portion when the developer on the first sheet member is positioned at the release portion.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: November 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsukasa Abe, Tatsuro Harada, Akihiro Fujiwara
  • Publication number: 20170285520
    Abstract: There is provided a developing apparatus including a conveyance member configured to bend in contact with an inner wall of a conveyance chamber and convey developer, a portion configured to bend the conveyance member, and a first releasing portion configured to release the bending of the conveyance member, a deforming portion configured to bend the conveyance member moved and released from the first releasing portion, and a second releasing portion configured to release the bending of the conveyance member on the downstream side of the deforming portion in the rotational direction of the conveyance member.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Inventors: Nobuyoshi Yoshida, Shuhei Kawasaki, Hideki Kakuta, Akihiro Fujiwara
  • Publication number: 20170160674
    Abstract: A developer storage unit includes a receiving portion which is provided on a rotating shaft, and configured to receive a developer falling from a conveyance member.
    Type: Application
    Filed: February 14, 2017
    Publication date: June 8, 2017
    Inventors: Kuniaki Hirukawa, Akihiro Fujiwara, Yu Fukasawa
  • Patent number: 9642242
    Abstract: An AC/DC converter of a power conversion apparatus includes filters, a PFC circuit, a first full bridge circuit, a first transformer, and a first rectifier circuit and converts an AC voltage supplied from the outside to a DC voltage. A DC/DC converter includes filters, a second full bridge circuit, a second transformer, and a second rectifier circuit and lowers a DC voltage output from the AC/DC converter. Constituent circuits of the AC/DC converter located on the primary side of the first transformer are mounted on the upper face of a cooling chassis which cools both the converters. Constituent circuits of the AC/DC converter located on the secondary side of the first transformer and constituent circuits of the DC/DC converter are mounted on the lower face of the cooling chassis.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: May 2, 2017
    Assignee: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.
    Inventors: Yusaku Ido, Takashi Yamada, Akihiro Fujiwara
  • Patent number: 9599955
    Abstract: A developer storage unit includes a receiving portion which is provided on a rotating shaft, and configured to receive a developer falling from a conveyance member.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: March 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kuniaki Hirukawa, Akihiro Fujiwara, Yu Fukasawa
  • Patent number: 9594342
    Abstract: A developing apparatus includes: a developing chamber that has a developer bearing member bearing developer, an accommodating chamber that has a concave portion and an opening and accommodates the developer under the developing chamber, a conveying member that conveys the developer by rotation; and a first detecting member and a second detecting member that detect an amount of the developer in use of capacitance. A part of the concave portion is within a turning radius of the conveying member. In addition, the first detecting member is provided on a downstream side in a rotating direction of the conveying member relative to the concave portion, and the second detecting member is provided on an upstream side in the rotating direction of the conveying member relative to the concave portion.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: March 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akihiro Fujiwara, Yuuki Nakamura
  • Publication number: 20160252874
    Abstract: A developing apparatus includes: a developing chamber that has a developer bearing member bearing developer; an accommodating chamber that has a concave portion and an opening and accommodate s the developer under the developing chamber; a conveying member that conveys the developer by rotation; and a first detecting member and a second detecting member that detect an amount of the developer in use of capacitance, wherein apart of the concave portion is within a turning radius of the conveying member, the first detecting member is provided on a downstream side in a rotating direction of the conveying member relative to the concave portion, and the second detecting member is provided on an upstream side in the rotating direction of the conveying member relative to the concave portion.
    Type: Application
    Filed: February 18, 2016
    Publication date: September 1, 2016
    Inventors: Akihiro Fujiwara, Yuuki Nakamura
  • Publication number: 20160252848
    Abstract: A developer container includes a conveyance member having at least a first sheet member and a second sheet member and configured to convey the developer, a deformation portion provided to contact the first sheet member and configured to elastically deform the first sheet member, and a release portion configured to release elastic deformation of the first sheet member to cause the developer on the first sheet member to fly toward an opening, wherein a containing chamber includes a recessed portion as viewed in a lengthwise direction of the containing chamber and wherein the second sheet member is in contact with a wall inside the recessed portion when the developer on the first sheet member is positioned at the release portion.
    Type: Application
    Filed: February 24, 2016
    Publication date: September 1, 2016
    Inventors: Tsukasa Abe, Tatsuro Harada, Akihiro Fujiwara
  • Publication number: 20160165716
    Abstract: An AC/DC converter of a power conversion apparatus includes filters, a PFC circuit, a first full bridge circuit, a first transformer, and a first rectifier circuit and converts an AC voltage supplied from the outside to a DC voltage. A DC/DC converter includes filters, a second full bridge circuit, a second transformer, and a second rectifier circuit and lowers a DC voltage output from the AC/DC converter. Constituent circuits of the AC/DC converter located on the primary side of the first transformer are mounted on the upper face of a cooling chassis which cools both the converters. Constituent circuits of the AC/DC converter located on the secondary side of the first transformer and constituent circuits of the DC/DC converter are mounted on the lower face of the cooling chassis.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 9, 2016
    Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.
    Inventors: Yusaku Ido, Takashi Yamada, Akihiro Fujiwara
  • Patent number: 9361000
    Abstract: A dial switch is operative to be rotated or tilted and to be pushed down, which can select any one of icons displayed on a menu screen of a display portion and display information regarding a function of an onboard apparatuses corresponding to a selected icon on the display portion. A central pushing switch is configured to function as a home key such that a default-state menu screen is displayed on the display portion whenever this switch is pushed down. Left or right pushing switches is configured to function as a shortcut key such that information regarding a function of an onboard apparatus corresponding to left-positioned or right-positioned icons positioned on left and right sides of a central icon is displayed on the display portion whenever the left or right pushing switches is pushed down.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: June 7, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Aya Furue, Keiichirou Yamamoto, Akihiro Fujiwara