Patents by Inventor Yasuharu Notoya

Yasuharu Notoya 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: 10983466
    Abstract: Provided is a fixing member including a base layer, and a surface layer on an outer surface of the base layer directly or with a primer layer interposed between the base layer and the surface layer, in which the surface layer is constituted by a single layer, the surface layer contains a fluororesin, and fluorine oil having a perfluoropolyether structure, and as for a measurement sample taken from the surface layer, when subjecting to predetermined treatments (i) and (ii), masses of an adhered material adhered in a unit area of a detection surface of a QCM sensor and containing the fluorine oil are within specific ranges.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: April 20, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yohei Miyauchi, Yasuharu Notoya, Kimihiro Yoshimura
  • Publication number: 20210054300
    Abstract: Provided is a lubricant composition having small shear rate dependence of its apparent viscosity. The lubricant composition includes a perfluoropolyether as a base oil, and fluorine resin particles as a thickener. The lubricant composition further includes a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the polymer is dissolved in the perfluoropolyether.
    Type: Application
    Filed: August 4, 2020
    Publication date: February 25, 2021
    Inventors: Yoshihito Oshima, Yohei Miyauchi, Yasuharu Notoya
  • Patent number: 10901354
    Abstract: Provided is a fixing member in which hot offset of a toner is difficult to be generated. The fixing member has a substrate and a release layer as a surface layer, wherein the release layer includes PFPE and a second fluororesin, the second fluororesin being at least one selected from PFA and FEP, and in a 19F-NMR spectrum of the release layer measured at a temperature of 200° C., a relaxation time T1 of longitudinal relaxation of a peak derived from PFPE is 0.5 seconds or more and 3.5 seconds or less.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: January 26, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuharu Notoya, Yohei Miyauchi, Kimihiro Yoshimura
  • Publication number: 20210003953
    Abstract: Provided is a fixing member for electrophotography having excellent toner releasability even when used for a long time period. The fixing member includes a base layer, an elastic layer, and a surface layer in the stated order. The surface layer contains a fluorine resin and a fluorine oil having a perfluoropolyether structure. The mass P11 of an adhered substance including the fluorine oil, adhered in the unit area of the detection surface of a QCM sensor when a measurement sample collected from the surface layer is subjected to a predetermined treatment (i), is 1.0×102 ng or more and 1.0×104 ng or less, and the mass P12 of an adhered substance including the fluorine oil, adhered in the unit area of the detection surface of the QCM sensor when the sample is subjected to a predetermined treatment (ii), is 0.5×P11 or more and 1.2×P11 or less.
    Type: Application
    Filed: September 15, 2020
    Publication date: January 7, 2021
    Inventors: Yohei Miyauchi, Yasuharu Notoya, Kimihiro Yoshimura
  • Publication number: 20200409294
    Abstract: Provided is a fixing member including a base layer, and a surface layer on an outer surface of the base layer directly or with a primer layer interposed between the base layer and the surface layer, in which the surface layer is constituted by a single layer, the surface layer contains a fluororesin, and fluorine oil having a perfluoropolyether structure, and as for a measurement sample taken from the surface layer, when subjecting to predetermined treatments (i) and (ii), masses of an adhered material adhered in a unit area of a detection surface of a QCM sensor and containing the fluorine oil are within specific ranges.
    Type: Application
    Filed: September 15, 2020
    Publication date: December 31, 2020
    Inventors: Yohei Miyauchi, Yasuharu Notoya, Kimihiro Yoshimura
  • Patent number: 10739712
    Abstract: Provided is a fixing member having an outer surface including excellent toner releasability and excellent scratch resistance, wherein the fixing member has a base material, an elastic layer, and a release layer in this order, the release layer including a tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer, and has a loss tangent at a frequency of 10 Hz and 180° C. of 5.0×10?2 or more and 3.0×10?1 or less.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: August 11, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yohei Miyauchi, Yasuharu Notoya, Kimihiro Yoshimura
  • 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: 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
  • 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: 20190294090
    Abstract: Provided is a fixing member in which hot offset of a toner is difficult to be generated. The fixing member has a substrate and a release layer as a surface layer, wherein the release layer includes PFPE and a second fluororesin, the second fluororesin being at least one selected from PFA and FEP, and in a 19F-NMR spectrum of the release layer measured at a temperature of 200° C., a relaxation time T1 of longitudinal relaxation of a peak derived from PFPE is 0.5 seconds or more and 3.5 seconds or less.
    Type: Application
    Filed: March 13, 2019
    Publication date: September 26, 2019
    Inventors: Yasuharu Notoya, Yohei Miyauchi, Kimihiro Yoshimura
  • Publication number: 20190294089
    Abstract: Provided is a fixing member having an outer surface including excellent toner releasability and excellent scratch resistance, wherein the fixing member has a base material, an elastic layer, and a release layer in this order, the release layer including a tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer, and has a loss tangent at a frequency of 10 Hz and 180° C. of 5.0×10?2 or more and 3.0×101 or less.
    Type: Application
    Filed: March 13, 2019
    Publication date: September 26, 2019
    Inventors: Yohei Miyauchi, Yasuharu Notoya, Kimihiro Yoshimura
  • Publication number: 20150286172
    Abstract: An image heating apparatus includes: a rotatable member configured to heat a toner image on a recording material, wherein the rotatable member includes a fluorine-containing resin material layer containing a fluorine-containing resin material at a surface thereof; a rubbing member configured to rub the rotatable member in a rubbing position; and particles, provided in the rubbing position, harder than the fluorine-containing resin material of the fluorine-containing resin material layer.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 8, 2015
    Inventors: Takahiro Hosokawa, Kazuhisa Kemmochi, Tsutomu Miki, Yasuharu Notoya, Masaru Toda, Akiko Kigure
  • Publication number: 20150286171
    Abstract: An image heating apparatus includes: a rotatable member configured to form a nip for heating an image on a recording material, wherein the rotatable member including a fluorine-containing resin material layer at a surface thereof; a rubbing member configured to rub the surface of the rotatable member in a rubbing position; and a supplying mechanism configured to supply fluorine-containing resin material particles to the rubbing position.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 8, 2015
    Inventors: Takahiro Hosokawa, Kazuhisa Kemmochi, Tsutomu Miki, Yasuharu Notoya, Masaru Toda, Akiko Kigure
  • Publication number: 20150286170
    Abstract: An image heating apparatus includes: a rotatable member configured to heat a toner image on a recording material, wherein the rotatable member includes a parting layer at a surface thereof; a heating portion configured to heat the rotatable member; a slidable member slidable on the parting layer, wherein the slidable member includes a surface layer having a surface roughness larger than a surface roughness of the parting layer; and a moving mechanism configured to move the slidable member relative to the rotatable member, which is in a rotating state, in a direction crossing with a rotational direction of the rotatable member so that a part of exfoliated matter of the parting layer and/or the surface layer is welded on the parting layer.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 8, 2015
    Inventors: Yasuharu Notoya, Kazuhisa Kemmochi, Tsutomu Miki, Takahiro Hosokawa, Masaru Toda, Akiko Kigure
  • Publication number: 20140205337
    Abstract: A fixing solution injecting portion is configured to inject a fixing solution containing a water-soluble polymer and water pulsewise out of micropores to produce sub-droplets of the fixing solution smaller than main droplets of the fixing solution in producing the main droplets. A sub-droplet supplying portion is configured to separate the main droplets and the sub-droplets of the fixing solution injected out of the fixing solution injecting portion and to supply the sub-droplets to a toner image on an image carrier.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yasuharu Notoya
  • Patent number: 8205980
    Abstract: An ink-jet recording liquid composition which is used together with a colored ink to form images and is capable of causing reaction upon contact with the colored ink; the composition being characterized by containing at least (a) a polyvalent metal salt, (b) a substance selected from cryptands and (c) a liquid medium; or an ink-jet recording ink characterized by containing at least (a) a polyvalent metal salt, (b) a substance selected from cryptands, (c) a liquid medium and (d) a coloring material.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: June 26, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuharu Notoya, Ryuji Katsuragi
  • Patent number: 7926931
    Abstract: An ink used in an ink jet recording method in which ink droplets are ejected from a recording head by the action of thermal energy to record an image on a recording medium; the ink being characterized by containing (a) a pigment, (b) a dispersing agent, (c) a liquid medium, (d) a polyglycerol and (e) at least one selected from a potassium salt of a carboxylic acid, a rubidium salt of a carboxylic acid and a cesium salt of a carboxylic acid.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: April 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuji Katsuragi, Yasuharu Notoya, Shoji Koike