Patents by Inventor Tsuyoshi Murakami

Tsuyoshi Murakami 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: 20220151077
    Abstract: A method for producing a circuit board includes providing a substrate on which a toner image formed of a thermoplastic toner has been formed and forming a conductive foil layer having a thickness of 0.1 ?m to 2 ?m on the toner image that has been formed on the substrate and then applying heat to the toner image and the conductive foil layer to form a wire constituted by conductive foil.
    Type: Application
    Filed: January 25, 2022
    Publication date: May 12, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Yasuo MATSUMURA, Sumiaki YAMASAKI, Tsuyoshi MURAKAMI, Kana YOSHIDA, Shuji SATO
  • Patent number: 11272622
    Abstract: A method for producing a circuit board includes providing a substrate on which a toner image formed of a thermoplastic toner has been formed and forming a conductive foil layer having a thickness of 0.1 ?m to 2 ?m on the toner image that has been formed on the substrate and then applying heat to the toner image and the conductive foil layer to form a wire constituted by conductive foil.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: March 8, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yasuo Matsumura, Sumiaki Yamasaki, Tsuyoshi Murakami, Kana Yoshida, Shuji Sato
  • Patent number: 11169459
    Abstract: A resin particle set includes a fluorescent color resin particle containing a fluorescent coloring agent; and a colored resin particle containing a colored coloring agent, wherein a volume average particle diameter of the fluorescent color resin particles is larger than a volume average particle diameter of the colored resin particles, and an average circularity of the fluorescent color resin particles is 0.93 or more.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: November 9, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Tomoaki Tanaka, Tsuyoshi Murakami, Kana Yoshida
  • Publication number: 20210255559
    Abstract: A resin particle set includes a fluorescent color resin particle containing a fluorescent coloring agent; and a colored resin particle containing a colored coloring agent, wherein a volume average particle diameter of the fluorescent color resin particles is larger than a volume average particle diameter of the colored resin particles, and an average circularity of the fluorescent color resin particles is 0.93 or more.
    Type: Application
    Filed: July 13, 2020
    Publication date: August 19, 2021
    Applicant: FUJIFILM BUSINESS INNOVATION CORP.
    Inventors: Tomoaki TANAKA, Tsuyoshi MURAKAMI, Kana YOSHIDA
  • Patent number: 11034834
    Abstract: Provided is a polycarbonate resin composition, including: an aromatic polycarbonate resin (A); and a polyether compound (B) having a polyoxyalkylene structure, in which: the polycarbonate resin composition includes 0.005 part by mass to 5 parts by mass of the polyether compound (B) with respect to 100 parts by mass of the aromatic polycarbonate resin (A); and the polycarbonate resin composition satisfies at least one of the following conditions (1) and (2): (1) an amount of potassium in the polyether compound (B) is 6 ppm by mass or less; and (2) an amount of sodium in the polyether compound (B) is 1 ppm by mass or less.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: June 15, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasunobu Yamazaki, Masami Takimoto, Tsuyoshi Murakami
  • Patent number: 11021604
    Abstract: Provided is a polycarbonate resin composition, including: a polycarbonate resin (A) containing a polycarbonate-polyorganosiloxane copolymer (A-1) having a specific structure; a copolymer (B) having constituent units derived from acrylonitrile and styrene, and being free of a constituent unit derived from methyl methacrylate; and a copolymer (C) having constituent units derived from butadiene and methyl methacrylate, in which: a content of the polyorganosiloxane block moiety in the entire resin composition is from 0.1 mass % to 10 mass %; a total of a content of the constituent unit derived from the acrylonitrile in the entire resin composition and a content of the constituent unit derived from the styrene in the entire resin composition is from 8 mass % to 45 mass %; a content of the constituent unit derived from the butadiene in the entire resin composition is from 3 mass % to 10 mass %; and the (A) has a viscosity-average molecular weight (Mv) of from 20,000 to 25,000.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: June 1, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoshio Okamoto, Tsuyoshi Murakami
  • Patent number: 10684567
    Abstract: A toner for developing an electrostatic image includes toner particles that each include a binder resin and a release agent. The ratio B/A of a half-width B of an exothermic peak Tc resulting from the release agent which is determined in a first cooling step by differential scanning calorimetry to a half-width A of an endothermic peak Tm resulting from the release agent which is determined in a first heating step prior to the first cooling step by differential scanning calorimetry is 1.5 or more and 4 or less.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: June 16, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Atsushi Sugawara, Kana Yoshida, Tsuyoshi Murakami, Masaki Iwase
  • Publication number: 20200093004
    Abstract: A method for producing a circuit board includes providing a substrate on which a toner image formed of a thermoplastic toner has been formed and forming a conductive foil layer having a thickness of 0.1 ?m to 2 ?m on the toner image that has been formed on the substrate and then applying heat to the toner image and the conductive foil layer to form a wire constituted by conductive foil.
    Type: Application
    Filed: January 22, 2019
    Publication date: March 19, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuo MATSUMURA, Sumiaki YAMASAKI, Tsuyoshi MURAKAMI, Kana YOSHIDA, Shuji SATO
  • Patent number: 10551756
    Abstract: An image forming apparatus includes an image holding member; a charging unit that charges the surface of the image holding member; an electrostatic charge image forming unit that forms an electrostatic charge image on the charged surface of the image holding member; a developing unit that has an electrostatic charge image developer and that develops the electrostatic charge image on the surface of the image holding member with the electrostatic charge image developer to form a toner image; a transfer unit that transfers the toner image formed on the surface of the image holding member to a recording medium; and a fixing unit that includes a fixing belt that comes into contact with the toner image transferred to the recording medium, a rotational member that is disposed in contact with the outer surface of the fixing belt and that forms a contact area between the fixing belt and the rotational member, and a heat source that is disposed so as to face the inner surface of the fixing belt to directly heat the fix
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: February 4, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tsuyoshi Murakami, Kana Yoshida
  • Patent number: 10429755
    Abstract: A white toner for electrostatic image development includes white toner particles containing a binder resin and a white pigment. When in a circularity distribution of the white pigment determined by sectional observation of the white toner particles, the cumulative 10% circularity from the smaller side is C10, and the cumulative 50% circularity is C50, the following formula (1) and formula (2) are satisfied. 0.900?C50?1.000??Formula (1): 1.00?C50/C10?1.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: October 1, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tsuyoshi Murakami, Tsutomu Furuta
  • Patent number: 10423087
    Abstract: An electrostatic charge image developing toner includes: a toner particle and a strontium titanate particle that is externally added to the toner particle, in which an average primary particle diameter of the strontium titanate particle that is present on a surface of the toner particle is 30 nm or more and 100 nm or less, and average primary particle circularity is 0.82 or more and 0.94 or less, and in which circularity that becomes 84% of accumulation of the primary particle is greater than 0.92.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 24, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Moegi Iguchi, Sakon Takahashi, Soutaro Kakehi, Yuka Yamagishi, Yutaka Saito, Mona Tasaki, Tsutomu Furuta, Tsuyoshi Murakami, Satoshi Kamiwaki
  • Publication number: 20190196348
    Abstract: A white toner for electrostatic image development includes white toner particles containing a binder resin and a white pigment. When in a circularity distribution of the white pigment determined by sectional observation of the white toner particles, the cumulative 10% circularity from the smaller side is C10, and the cumulative 50% circularity is C50, the following formula (1) and formula (2) are satisfied. 0.900?C50?1.000 ??Formula (1) 1.00?C50/C10?1.
    Type: Application
    Filed: May 22, 2018
    Publication date: June 27, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tsuyoshi MURAKAMI, Tsutomu FURUTA
  • Patent number: 10324389
    Abstract: An electrostatic charge developing toner includes a toner particle that includes a pigment particle having a surface aluminum proportion by an X-ray photoelectron spectroscopy of 6.0 atom % or more and 12.0 atom % or less and a binder resin having a carboxy group.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: June 18, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shinya Sakamoto, Tsuyoshi Murakami, Tomoaki Tanaka, Masaki Iwase, Ryutaro Kembo
  • Publication number: 20190094729
    Abstract: An electrostatic charge developing toner includes a toner particle that includes a pigment particle having a surface aluminum proportion by an X-ray photoelectron spectroscopy of 6.0 atom % or more and 12.0 atom % or less and a binder resin having a carboxy group.
    Type: Application
    Filed: April 16, 2018
    Publication date: March 28, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shinya SAKAMOTO, Tsuyoshi MURAKAMI, Tomoaki TANAKA, Masaki IWASE, Ryutaro KEMBO
  • Publication number: 20190033737
    Abstract: An electrostatic charge image developing toner includes: a toner particle and a strontium titanate particle that is externally added to the toner particle, in which an average primary particle diameter of the strontium titanate particle that is present on a surface of the toner particle is 30 nm or more and 100 nm or less, and average primary particle circularity is 0.82 or more and 0.94 or less, and in which circularity that becomes 84% of accumulation of the primary particle is greater than 0.92.
    Type: Application
    Filed: April 30, 2018
    Publication date: January 31, 2019
    Applicant: FUJI XEROX CO.,LTD.
    Inventors: Moegi IGUCHI, Sakon TAKAHASHI, Soutaro KAKEHI, Yuka YAMAGISHI, Yutaka SAITO, Mona TASAKI, Tsutomu FURUTA, Tsuyoshi MURAKAMI, Satoshi KAMIWAKI
  • Patent number: 10119022
    Abstract: Provided is a polycarbonate resin composition, including: a polycarbonate resin (A) containing a polycarbonate-polyorganosiloxane copolymer (A-1) having a specific structure; a copolymer (B) having constituent units derived from acrylonitrile and styrene, and being free of a constituent unit derived from methyl methacrylate; a copolymer (C) having constituent units derived from butadiene and methyl methacrylate; and a flame retardant (D), the resin composition satisfying a predetermined expression (a).
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: November 6, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoshio Okamoto, Tsuyoshi Murakami
  • Patent number: 10066101
    Abstract: Provided is a polycarbonate resin molding material for articles to be coated, containing a polycarbonate resin (A) containing a polycarbonate-polyorganosiloxane copolymer (A-1) having a specific structure, and a copolymer (B) having a constituent unit derived from butadiene, and a content of the polyorganosiloxane block moiety in entirety of the molding material is in the range of 0.50 to 10% by mass and a content of the constituent unit derived from butadiene in entirety of the molding material is in the range of 1 to 10% by mass.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: September 4, 2018
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yusuke Aoki, Yoshio Okamoto, Tsuyoshi Murakami
  • Publication number: 20180230305
    Abstract: Provided is a polycarbonate resin composition, including: a polycarbonate resin (A) containing a polycarbonate-polyorganosiloxane copolymer (A-1) having a specific structure; a copolymer (B) having constituent units derived from acrylonitrile and styrene, and being free of a constituent unit derived from methyl methacrylate; and a copolymer (C) having constituent units derived from butadiene and methyl methacrylate, in which: a content of the polyorganosiloxane block moiety in the entire resin composition is from 0.1 mass % to 10 mass %; a total of a content of the constituent unit derived from the acrylonitrile in the entire resin composition and a content of the constituent unit derived from the styrene in the entire resin composition is from 8 mass % to 45 mass %; a content of the constituent unit derived from the butadiene in the entire resin composition is from 3 mass % to 10 mass %; and the (A) has a viscosity-average molecular weight (Mv) of from 20,000 to 25,000.
    Type: Application
    Filed: August 2, 2016
    Publication date: August 16, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoshio OKAMOTO, Tsuyoshi MURAKAMI
  • Patent number: 10042275
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin and a white pigment, wherein, in a particle size distribution of a maximum Feret diameter of particles of the white pigment present in the toner particle, a ratio of particles of the white pigment having a maximum Feret diameter of 200 nm or more and less than 400 nm is 50% by number or more with respect to the entire particles of the white pigment, and a maximum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 650 nm or more and less than 1,000 nm is larger than a minimum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 500 nm or more and less than 650 nm.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: August 7, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masaki Iwase, Atsushi Sugawara, Tsuyoshi Murakami, Kana Yoshida
  • Publication number: 20180187001
    Abstract: Provided is a polycarbonate resin composition, including: an aromatic polycarbonate resin (A); and a polyether compound (B) having a polyoxyalkylene structure, in which: the polycarbonate resin composition includes 0.005 part by mass to 5 parts by mass of the polyether compound (B) with respect to 100 parts by mass of the aromatic polycarbonate resin (A); and the polycarbonate resin composition satisfies at least one of the following conditions (1) and (2): (1) an amount of potassium in the polyether compound (B) is 6 ppm by mass or less; and (2) an amount of sodium in the polyether compound (B) is 1 ppm by mass or less.
    Type: Application
    Filed: May 26, 2016
    Publication date: July 5, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yasunobu Yamazaki, Masami Takimoto, Tsuyoshi Murakami