Patents by Inventor Yuichi Furukawa

Yuichi Furukawa 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: 11112748
    Abstract: An electrophotographic developing member includes an electro-conductive support and an electro-conductive layer provided on the support, wherein the electro-conductive layer has a matrix containing a first rubber and a plurality of domains dispersed in the matrix, and the domain contains a second rubber and an electronic conductive agent and when a frequency is log-log-plotted on a horizontal axis and an impedance is log-log-plotted on a vertical axis with respect to an impedance measured by applying an alternating current voltage having an amplitude of 1 V on the electro-conductive layer while changing a frequency between 1.0×10?2 Hz to 1.0×107 Hz under a specific environment, an inclination of an impedance on a high frequency side is ?0.8 or more and ?0.3 or less and an impedance on a low frequency side is 1.0×104? to 1.0×1011?.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: September 7, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masaki Yamada, Yuichi Kikuchi, Tetsuo Hino, Kazuhiro Yamauchi, Takumi Furukawa, Hiroaki Watanabe, Kenya Terada, Yuya Tomomizu, Toshimitsu Nakazawa
  • Publication number: 20210263433
    Abstract: A lustrous developer according to an embodiment may include: a metallic pigment; and a binder resin. The lustrous developer includes small diameter particles smaller than a volume median diameter of the metallic pigment. A ratio of a volume of particles other than the small diameter particles in the lustrous developer to a volume of the entire lustrous developer is 90.297% or more and 99.314% or less. The volume median diameter of the metallic pigment is 5.91 ?m or less.
    Type: Application
    Filed: February 9, 2021
    Publication date: August 26, 2021
    Applicant: Oki Data Corporation
    Inventor: Yuichi FURUKAWA
  • Publication number: 20210142468
    Abstract: A manufacturing history management system according to an aspect of the present disclosure includes a data generation unit, a data storage unit, and a data extraction unit. The data generation unit generates manufacturing history data by associating internal void information specific to a product and manufacturing history information of the product with a product identification code. The data storage unit stores the manufacturing history data relating to a plurality of the products generated by the data generation unit. The data extraction unit checks the internal void information of the manufacturing history data of the plurality of products stored in the data storage unit against the internal void information of a predetermined product and extracts the manufacturing history data that matches the internal void information of the predetermined product from the manufacturing history data of the plurality of products stored in the data storage unit.
    Type: Application
    Filed: October 27, 2020
    Publication date: May 13, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kojiro Suzuki, Yuichi Furukawa
  • Patent number: 10596618
    Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: March 24, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC International Co., Ltd.
    Inventors: Naoaki Sugiura, Yuichi Furukawa, Mitsuhiro Kobayashi, Fumio Kawahara, Katsuhiro Takami
  • Patent number: 10509339
    Abstract: An image forming apparatus includes an image forming section and a controller. The image forming section selectively forms a first toner image to be printed on transfer paper other than plain paper with use of a toner and forms a second toner image to be printed on the plain paper with use of the toner. The controller controls the image forming section and thereby makes a first area density of the toner in the first toner image and a second area density of the toner in the second toner image differ from each other.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: December 17, 2019
    Assignee: Oki Data Corporation
    Inventors: Yuichi Furukawa, Kohei Kigawa
  • Patent number: 10322446
    Abstract: There is provided a nitrided layer repair method in which a molten metal is pressurized and solidified, and thus a nitrided layer formed on a cavity surface of a mold used to form a casting object is repaired. In the nitrided layer repair method, a nitriding source is applied to the cavity surface, and the cavity surface of the mold is nitrided by heating and pressurizing the cavity surface using the molten metal.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 18, 2019
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TETRA CO., LTD, TOYOTA SCHOOL FOUNDATION
    Inventors: Eiji Tabata, Yuichi Furukawa, Yoshiki Tsunekawa, Hiroyuki Matsubara
  • Patent number: 10191402
    Abstract: An image forming apparatus for developing an image with developer includes a development part, a transfer part, and a fuser the medium. The developer is configured with a plurality of particles, an average circularity degree of the developer is ranged within 0.955 to 0.970, and a peeling rate (%) of the external additive by a following equation is 30.6% or less, peeling rate (%)=[1?(X/Y)]×100??(1) wherein X is an amount (weight %) of the external additive included in the developer after ultrasonic waves are applied, and Y is an amount (weight %) of the external additive included in the developer before the ultrasonic waves are applied.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: January 29, 2019
    Assignee: Oki Data Corporation
    Inventor: Yuichi Furukawa
  • Publication number: 20180348660
    Abstract: An image forming apparatus includes an image forming section and a controller. The image forming section selectively forms a first toner image to be printed on transfer paper other than plain paper with use of a toner and forms a second toner image to be printed on the plain paper with use of the toner. The controller controls the image forming section and thereby makes a first area density of the toner in the first toner image and a second area density of the toner in the second toner image differ from each other.
    Type: Application
    Filed: May 18, 2018
    Publication date: December 6, 2018
    Inventors: Yuichi FURUKAWA, Kohei KIGAWA
  • Publication number: 20180107133
    Abstract: An image forming apparatus includes a developer, an image bearing body, a charging member that charges a surface of the image bearing body, an exposure device that emits light to expose the surface of the image bearing body to form a latent image, a developer bearing body that bears the developer and develops the latent image to form a developer image, and a transfer portion that transfers the developer image from the image bearing body to a transfer body. The developer includes mother particles containing crystalline polyester resin as a binder resin, and a plurality of kinds of external additives containing silica and having different particle diameters. A value obtained by dividing a flowability of the developer by a weight percent of silica contained in the developer is in a range from 8.6 to 11.4. The weight percent of silica is measured by an energy dispersion type X-ray analyzer.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 19, 2018
    Applicant: Oki Data Corporation
    Inventor: Yuichi FURUKAWA
  • Publication number: 20180085823
    Abstract: There is provided a nitrided layer repair method in which a molten metal is pressurized and solidified, and thus a nitrided layer formed on a cavity surface of a mold used to form a casting object is repaired. In the nitrided layer repair method, a nitriding source is applied to the cavity surface, and the cavity surface of the mold is nitrided by heating and pressurizing the cavity surface using the molten metal.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 29, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota School Foundation, TETRA Co., Ltd.
    Inventors: Eiji TABATA, Yuichi FURUKAWA, Yoshiki TSUNEKAWA, Hiroyuki MATSUBARA
  • Publication number: 20180056363
    Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.
    Type: Application
    Filed: August 23, 2017
    Publication date: March 1, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC International Co., Ltd.
    Inventors: Naoaki SUGIURA, Yuichi FURUKAWA, Mitsuhiro KOBAYASHI, Fumio KAWAHARA, Katsuhiro TAKAMI
  • Publication number: 20170248862
    Abstract: An image forming apparatus for developing an image with developer includes a development part, a transfer part, and a fuser the medium. The developer is configured with a plurality of particles, an average circularity degree of the developer is ranged within 0.955 to 0.970, and a peeling rate (%) of the external additive by a following equation is 30.6% or less, peeling rate (%)=[1 ?(X/Y)]×100 . . . ??(1) wherein X is an amount (weight %) of the external additive included in the developer after ultrasonic waves are applied, and Y is an amount (weight %) of the external additive included in the developer before the ultrasonic waves are applied.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 31, 2017
    Inventor: Yuichi FURUKAWA
  • Publication number: 20170248863
    Abstract: An image forming apparatus for developing an electrostatic latent image with developer includes a development part, a transfer part, and a fuser. The developer includes first developer with a first coloring agent of yellow and a first external additive, and second developer with a second coloring agent of a color other than yellow and a second external additive. A first peeling rate of the first external additive by a following formula (1) is smaller than a second peeling rate of the second external additive by a following formula (2), the first peeling rate (%)=[1?(X1/Y1)]×100??(1) the second peeling rate (%)=[1?(X2/Y2)]×100??(2) X1, Y1 are amounts (weight %) of the first external additive in the first developer after/before the ultrasonic waves are applied, X2, Y2 are amounts (weight %) of the second external additive in the second developer after/before the ultrasonic waves are applied.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 31, 2017
    Inventor: Yuichi FURUKAWA
  • Patent number: 9713840
    Abstract: A method for manufacturing a pipe with a rib, in which a rib portion formed inside a pipe portion includes bent portions in accordance with bending of the pipe portion or a twisted portion in accordance with twisting of the pipe portion, includes drawing out molten metal held in a furnace by using a starter, from a surface of the molten metal, and drawing up the molten metal through a shape defining member defining a sectional shape of the pipe with the rib to be cast, and cooling and solidifying the molten metal passed through the shape defining member and drawn up. The bent portions are formed by moving at least one of the starter and the shape defining member in a horizontal direction. The twisted portion is formed by rotating at least one of the starter and the shape defining member about an axis extending along a vertical direction.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: July 25, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Furukawa, Tsukasa Kato, Keiichi Morita, Tetsuya Nakajima, Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama
  • Patent number: 9700935
    Abstract: There are provided a manufacturing method of a casting capable of easily manufacturing a casting having a complex form and of increasing the degree of freedom of form of the casting to be manufactured, a manufacturing device thereof and a casting. At the time of forming a casting by drawing out molten metal from a bath surface of a molten metal bath and solidifying the molten metal which has been drawn out, an outer contour unit configured from a plurality of outer contour defining members for defining the outer contour of a casting is arranged in a region between the bath surface of the molten meth bath and a solid region where the molten metal is solidified and the molten metal which has been drawn out from the bath surface is drawn out through a region determined by the outer contour unit, and the form of the casting is changed by moving at least one of the plurality of outer contour defining members according to the drawing out of the molten metal.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 11, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Yu Sasaki, Yuichi Furukawa, Norihiro Amano, Jun Yaokawa, Yasushi Iwata, Yoshio Sugiyama
  • Publication number: 20170153571
    Abstract: An image forming apparatus includes a developer; an image carrier on which a latent image is formed; a charge member that charges the image carrier; an exposure part that forms a latent image on the image carrier charged; a developer carrier that carries the developer and develops the latent image on the image carrier as a developer image; and a transfer part that transfers the developer image from the image carrier to a recording medium. The developer is a one-component based developer that is produced by a pulverization method and does not contain a charge adjuvant, and 0.25 (parts by weight) or more of a sol-gel silica to 100 (parts by weight) of a base particle as an external additive is added.
    Type: Application
    Filed: November 18, 2016
    Publication date: June 1, 2017
    Inventors: Yuichi FURUKAWA, Hayato MATSUMOTO
  • Patent number: 9644255
    Abstract: A surface treatment method for a metal material is provided which includes applying diluted sulfuric acid to a surface of the metal material that is composed primarily of iron, performing a heat treatment on the metal material in the presence of at least one of CO, CO2 and organic gas under nitriding conditions under which a nitrided layer is formed in a superficial layer of the metal material after the application of the diluted sulfuric acid to form a carbon film which includes at least one of carbon nanocoils, carbon nanotubes and carbon nanofilaments on a surface of the nitrided layer of the metal material.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 9, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA SCHOOL FOUNDATION, MEC INTERNATIONAL CO. LTD.
    Inventors: Yuichi Furukawa, Masahiro Okumiya, Yoshiki Tsunekawa, Nao Kumemoto, Fumio Kawahara, Katsuhiro Takami
  • Patent number: 9605157
    Abstract: A surface treatment method on a base material coated a surface with a carbon film includes: supplying at least any one of titanium, zirconium, niobium, vanadium, hafnium, tantalum, and tungsten to the carbon film; and heating the carbon film to 400° C. or more under an inert atmosphere, thereby forming a coating film on the base material.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: March 28, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi Furukawa, Shuji Sotozaki
  • Patent number: 9498818
    Abstract: A casting mold includes a carbon film with which at least a surface of the casting mold which forms a cavity is covered, and mold oil with which a surface of the carbon film is coated. In the casting mold, aluminum powder is added to the mold oil.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: November 22, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Koyama, Motoaki Ozaki, Yuichi Furukawa, Shuji Sotozaki, Hiroaki Wakai
  • Publication number: 20160332220
    Abstract: An up-drawing continuous casting method according to the present invention is an up-drawing continuous casting method for forming a casting having a predetermined shape by drawing up molten metal held in a holding furnace, and includes: a step of introducing, into the molten metal, a hollow member configured to draw up the molten metal; and a step of flowing inert gas into the hollow member so as to pour the inert gas into the molten metal. The casting is formed by drawing up the molten metal with the hollow member after stopping the flowing of the inert gas into the molten metal.
    Type: Application
    Filed: December 10, 2014
    Publication date: November 17, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuichi FURUKAWA, Keiichi MORITA