Patents by Inventor Yuji Kitano

Yuji Kitano 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: 11530638
    Abstract: A general-purpose engine is provided with an engine body having an exhaust system part connected to a cylinder, and also with a cooling mechanism for cooling the engine body. The cooling mechanism is provided with a cooling fan which rotates to generate a cooling air flow, a discharge section which discharges the cooling air flow generated by the rotation of the cooling fan and a cooling air flow opening which is disposed in the upper part of a partition for separating a cylinder chamber having the cylinder provided therein from a muffler chamber having a canister muffler provided therein, connects the cylinder head side of the cylinder chamber and the upper side of the muffler chamber, and causes a cooling air flow to flow from the cylinder head side of the cylinder chamber to the muffler chamber.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: December 20, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuji Oigawa, Kiichi Shimamura, Sho Kitano
  • Publication number: 20220334522
    Abstract: A fixing member for electrophotography having an endless shape has a base layer having an endless shape, and an elastic layer on the outer circumferential surface of the base layer. The elastic layer includes a silicone rubber and a filler dispersed in the silicone rubber. The total amount of the filler compounded in the elastic layer is 30 vol % or less based on the total volume of the elastic layer. The elastic layer satisfies the relation of ?td>?md>?nd. ?td is a thermal conductivity of the elastic layer in the circumferential direction, ?nd is a thermal conductivity of the elastic layer in the thickness direction, and ?md, is a thermal conductivity of the elastic layer in the longitudinal direction. ?td is 2.0 W/(m·K) or more, and ?nd is 1.3 W/(m·K) or more.
    Type: Application
    Filed: April 11, 2022
    Publication date: October 20, 2022
    Inventors: Yasuhiro Miyahara, Matsutaka Maeda, Yuji Kitano, Makoto Souma, Yutaro Yoshida, Shigeo Kuroda
  • Patent number: 11467520
    Abstract: Provided is an electrophotographic fixing member including an elastic layer having a low hardness while maintaining a high thermal conductivity and a high strength, the elastic layer being less liable to fracture even when repeatedly compressed in a high-temperature state. The fixing member for electrophotography includes a substrate, an elastic layer on the substrate, and a surface layer in the stated order, wherein the elastic layer contains a silicone rubber and a heat conductive filler dispersed in the silicone rubber, wherein the heat conductive filler is metal oxide particles, or metal particles each having a surface at least part of which is formed of a metal oxide, and wherein the elastic layer further contains a charge control agent negatively chargeable with respect to the heat conductive filler.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: October 11, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Kitano, Takeshi Suzuki, Matsutaka Maeda, Makoto Souma, Yasuhiro Miyahara
  • Publication number: 20220294253
    Abstract: A control device for controlling a first DC-DC converter and a second DC-DC converter that supply power to equipment, the control device comprising a processor configured to fix an output of the first DC-DC converter at a maximum and perform feedback control such that an output of the second DC-DC converter satisfies a predetermined condition in a case in which the output of the first DC-DC converter has reached the maximum.
    Type: Application
    Filed: February 3, 2022
    Publication date: September 15, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Taiki TAKEMOTO, Akira UMEMOTO, Eiji KITANO, Yuji OMIYA
  • Publication number: 20220260945
    Abstract: An electrophotographic member comprising a base body and an elastic layer on the base body, the elastic layer including silicone rubber and metallic silicon particles in the silicone rubber; wherein the metallic silicon particles have a mass reduction rate of 0.05% or more.
    Type: Application
    Filed: February 1, 2022
    Publication date: August 18, 2022
    Inventors: Matsutaka Maeda, Yuji Kitano
  • Publication number: 20220259381
    Abstract: A liquid silicone rubber composition contains metallic silicon particles. The content of the metallic silicon particles is 35% by volume or more and 45% by volume or less. The volume average particle diameter of the metallic silicon particles is 1 ?m or more and 20 ?m or less. The ratio A/B of viscosity A at a shear rate of 0.02/sec to viscosity B at a shear rate of 1/sec of the composition is 2.0 or less.
    Type: Application
    Filed: February 7, 2022
    Publication date: August 18, 2022
    Inventors: Matsutaka Maeda, Yuji Kitano
  • Publication number: 20220075296
    Abstract: Provided is an electrophotographic fixing member including an elastic layer having a low hardness while maintaining a high thermal conductivity and a high strength, the elastic layer being less liable to fracture even when repeatedly compressed in a high-temperature state. The fixing member for electrophotography includes a substrate, an elastic layer on the substrate, and a surface layer in the stated order, wherein the elastic layer contains a silicone rubber and a heat conductive filler dispersed in the silicone rubber, wherein the heat conductive filler is metal oxide particles, or metal particles each having a surface at least part of which is formed of a metal oxide, and wherein the elastic layer further contains a charge control agent negatively chargeable with respect to the heat conductive filler.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 10, 2022
    Inventors: Yuji Kitano, Takeshi Suzuki, Matsutaka Maeda, Makoto Souma, Yasuhiro Miyahara
  • Patent number: 10890869
    Abstract: An electrophotographic fixing member having an elastic layer that is high in thermal conductivity in the thickness direction, resists causing fracture or plastic deformation even by repeated compression in a high temperature state, and is low in hardness. The electrophotographic fixing member has a substrate, and an elastic layer provided on the substrate, wherein the elastic layer contains a filler containing an inorganic oxide and is provided on an outer circumference of the substrate, wherein (1) in a binarized image on a first cross-section in a thickness-circumferential direction of the elastic layer and a binarized image on a second cross-section in a thickness-axial direction of the elastic layer, 1.0?(A/B)?2.0 and 0.40?(A+B)?0.50 are satisfied; and (2) 50°??Ave?90° is satisfied.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: January 12, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Akeshi Asaka, Noriaki Kobayashi, Matsutaka Maeda, Yuji Kitano
  • Patent number: 10859956
    Abstract: Provided is a fixing member having excellent heat resistance and durability. The fixing member includes a substrate and an elastic layer on the substrate, wherein the elastic layer includes: rubber, thermally conductive particles dispersed in the rubber, and iron oxide particles dispersed in the rubber, a content of the thermally conductive particles in the elastic layer is 30% by volume or more and 50% by volume or less, a content of the iron oxide particles in the elastic layer is 0.01% by volume or more and 1.0% by volume or less, the thermally conductive particles are at least one selected from the group consisting of aluminum oxide, metal silicon, magnesium oxide, zinc oxide, and silicon carbide, and the iron oxide particles have a localization index M of 0.2 or more and less than 0.8, wherein the localization index M is determined by specific steps.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: December 8, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Matsutaka Maeda, Mamo Matsumoto, Yuji Kitano, Yo Imaizumi, Makoto Souma
  • Publication number: 20200371460
    Abstract: An electrophotographic fixing member having an elastic layer that is high in thermal conductivity in the thickness direction, resists causing fracture or plastic deformation even by repeated compression in a high temperature state, and is low in hardness. The electrophotographic fixing member has a substrate, and an elastic layer provided on the substrate, wherein the elastic layer contains a filler containing an inorganic oxide and is provided on an outer circumference of the substrate, wherein (1) in a binarized image on a first cross-section in a thickness-circumferential direction of the elastic layer and a binarized image on a second cross-section in a thickness-axial direction of the elastic layer, 1.0?(A/B)?2.0 and 0.40?(A+B)?0.50 are satisfied; and (2) 50°??Ave?90° is satisfied.
    Type: Application
    Filed: May 20, 2020
    Publication date: November 26, 2020
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Akeshi Asaka, Noriaki Kobayashi, Matsutaka Maeda, Yuji Kitano
  • Publication number: 20200333737
    Abstract: Provided is a fixing member having excellent heat resistance and durability. The fixing member includes a substrate and an elastic layer on the substrate, wherein the elastic layer includes: rubber, thermally conductive particles dispersed in the rubber, and iron oxide particles dispersed in the rubber, a content of the thermally conductive particles in the elastic layer is 30% by volume or more and 50% by volume or less, a content of the iron oxide particles in the elastic layer is 0.01% by volume or more and 1.0% by volume or less, the thermally conductive particles are at least one selected from the group consisting of aluminum oxide, metal silicon, magnesium oxide, zinc oxide, and silicon carbide, and the iron oxide particles have a localization index M of 0.2 or more and less than 0.8, wherein the localization index M is determined by specific steps.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 22, 2020
    Inventors: Matsutaka Maeda, Mamo Matsumoto, Yuji Kitano, Yo Imaizumi, Makoto Souma
  • Patent number: 10712697
    Abstract: Provided is a fixing member includes: a substrate; and an elastic layer on the substrate, wherein the elastic layer contains a rubber and fillers dispersed in the rubber, and wherein an average value of area ratios of large-particle diameter fillers is 20% or more and 40% or less, and the large-particle diameter fillers have an average array degree fL of 0.00 or more and 0.15 or less, an average value of an area ratios of small-particle diameter fillers is 10% or more and 20% or less, the small-particle diameter fillers have an average array degree fS of 0.20 or more and 0.50 or less, and the small-particle diameter fillers have an average array angle ?S of 60° or more and 120° or less.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: July 14, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Matsutaka Maeda, Yuji Kitano, Mamo Matsumoto, Katsuhisa Matsunaka, Yasuharu Notoya, Yo Imaizumi, Takuji Oishi, Yasuhiro Miyahara
  • Patent number: 10620574
    Abstract: Provided is a fixing member for a heat fixing apparatus which can further improve utilization efficiency of heat for heat fixing of an unfixed toner. A fixing member having an endless belt shape includes a substrate and an elastic layer on the substrate, wherein the elastic layer includes silicone rubber and a filler dispersed in the silicone rubber, and when a thermal conductivity of the elastic layer in a thickness direction is defined as ?nd, a thermal conductivity of the elastic layer in a circumferential direction is defined as ?td, and a thermal conductivity of the elastic layer in a width direction is defined as ?md, ?nd is 1.30 W/(m·K) or more, and ?nd, ?td, and ?md satisfy a relationship as shown below ?nd>?md>?td.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 14, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Kitano, Katsuya Abe, Takeshi Suzuki, Mamo Matsumoto, Matsutaka Maeda, Yasuharu Notoya, Katsuhisa Matsunaka, Masaaki Takahashi
  • Patent number: 10545439
    Abstract: The present disclosure provides a fixing member that has a substrate, and a single layer of an elastic layer on the substrate, the elastic layer having a thickness of 100 ?m or more, and containing a binder and a filler, wherein the elastic layer contains the filler in a content of 30% by volume or more to 60% by volume or less based on the total volume of the elastic layer, and wherein, when a surface of the elastic layer facing to the substrate is defined as a first surface, and a surface of the elastic layer opposed to the first surface is defined as a second surface, an average value of ratios of an element derived from the filler is 0.0 atomic % or more to 6.0 atomic % or less in a region having a thickness of 6 ?m, from the first surface toward the second surface.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Mamo Matsumoto, Katsuhisa Matsunaka, Matsutaka Maeda, Yasuharu Notoya, Yuji Kitano, Makoto Souma
  • Publication number: 20190377291
    Abstract: Provided is a fixing member includes: a substrate; and an elastic layer on the substrate, wherein the elastic layer contains a rubber and fillers dispersed in the rubber, and wherein an average value of area ratios of large-particle diameter fillers is 20% or more and 40% or less, and the large-particle diameter fillers have an average array degree fL of 0.00 or more and 0.15 or less, an average value of an area ratios of small-particle diameter fillers is 10% or more and 20% or less, the small-particle diameter fillers have an average array degree fS of 0.20 or more and 0.50 or less, and the small-particle diameter fillers have an average array angle ?S of 60° or more and 120° or less.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 12, 2019
    Inventors: Matsutaka Maeda, Yuji Kitano, Mamo Matsumoto, Katsuhisa Matsunaka, Yasuharu Notoya, Yo Imaizumi, Takuji Oishi, Yasuhiro Miyahara
  • Publication number: 20190377290
    Abstract: Provided is a fixing member for a heat fixing apparatus which can further improve utilization efficiency of heat for heat fixing of an unfixed toner. A fixing member having an endless belt shape includes a substrate and an elastic layer on the substrate, wherein the elastic layer includes silicone rubber and a filler dispersed in the silicone rubber, and when a thermal conductivity of the elastic layer in a thickness direction is defined as ?nd, a thermal conductivity of the elastic layer in a circumferential direction is defined as ?td, and a thermal conductivity of the elastic layer in a width direction is defined as ?md, ?nd is 1.30 W/(m·K) or more, and ?nd, ?td, and ?md satisfy a relationship as shown below ?nd >?md >?td.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 12, 2019
    Inventors: Yuji Kitano, Katsuya Abe, Takeshi Suzuki, Mamo Matsumoto, Matsutaka Maeda, Yasuharu Notoya, Katsuhisa Matsunaka, Masaaki Takahashi
  • Publication number: 20190377285
    Abstract: The present disclosure provides a fixing member that has a substrate, and a single layer of an elastic layer on the substrate, the elastic layer having a thickness of 100 ?m or more, and containing a binder and a filler, wherein the elastic layer contains the filler in a content of 30% by volume or more to 60% by volume or less based on the total volume of the elastic layer, and wherein, when a surface of the elastic layer facing to the substrate is defined as a first surface, and a surface of the elastic layer opposed to the first surface is defined as a second surface, an average value of ratios of an element derived from the filler is 0.0 atomic % or more to 6.0 atomic % or less in a region having a thickness of 6 ?m, from the first surface toward the second surface.
    Type: Application
    Filed: May 24, 2019
    Publication date: December 12, 2019
    Inventors: Mamo Matsumoto, Katsuhisa Matsunaka, Matsutaka Maeda, Yasuharu Notoya, Yuji Kitano, Makoto Souma
  • Patent number: 10379464
    Abstract: Provided is an endless belt-shaped electrophotographic member having a superior durability. The member comprises an endless belt-shaped substrate and a surface layer, the surface layer comprising an ionizing radiation crosslinked product of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), the surface layer is formed by irradiation of electron beam to a resin layer, the resin layer comprising the PFA, the surface layer has a universal hardness HU at 200° C. of 18 N/mm2?HU?40 N/mm2, and when a degree of orientation of the PFA in the resin layer in a direction orthogonal to the circumferential direction of the substrate is defined as Ri, and a degree of orientation of the crosslinked PFA in the surface layer in the direction orthogonal to the circumferential direction of the substrate is defined as Rf, Ri and Rf satisfy a relationship represented by expression (1): Ri×0.8?Rf?Ri??(1).
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: August 13, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroki Muramatsu, Toshinori Nakayama, Kota Arimoto, Masayuki Tamaki, Yusuke Yamaguchi, Ryo Yashiro, Matsutaka Maeda, Yuji Kitano, Yoshihito Oshima
  • Publication number: 20180046117
    Abstract: Provided is an endless belt-shaped electrophotographic member having a superior durability. The member comprises an endless belt-shaped substrate and a surface layer, the surface layer comprising an ionizing radiation crosslinked product of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), the surface layer is formed by irradiation of electron beam to a resin layer, the resin layer comprising the PFA, the surface layer has a universal hardness HU at 200° C. of 18 N/mm2?HU?40 N/mm2, and when a degree of orientation of the PFA in the resin layer in a direction orthogonal to the circumferential direction of the substrate is defined as Ri, and a degree of orientation of the crosslinked PFA in the surface layer in the direction orthogonal to the circumferential direction of the substrate is defined as Rf, Ri and Rf satisfy a relationship represented by expression (1): Ri×0.8?Rf?Ri??(1).
    Type: Application
    Filed: August 7, 2017
    Publication date: February 15, 2018
    Inventors: Hiroki Muramatsu, Toshinori Nakayama, Kota Arimoto, Masayuki Tamaki, Yusuke Yamaguchi, Ryo Yashiro, Matsutaka Maeda, Yuji Kitano, Yoshihito Oshima
  • Patent number: 9665049
    Abstract: A member for electrophotography includes a substrate, an elastic layer containing a silicone rubber, a surface layer containing a fluorine resin, and an adhesive layer between the elastic layer and the surface layer. The adhesive layer contains a polyimide silicone. When a peel test of the surface layer from the elastic layer is conducted after the member is left in the environment of 260° C. for 10 hours, the elastic layer undergoes a cohesive failure.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: May 30, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihito Oshima, Yuji Kitano, Matsutaka Maeda