Patents by Inventor Shintaro Anno

Shintaro Anno 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: 11181847
    Abstract: A carrier for electrostatic image development includes: a core material; and a coating resin layer that contains inorganic particles and covers the core material. The content of the inorganic particles is 10% by mass or more and 60% by mass or less based on the total mass of the coating resin layer. The volume average diameter D (?m) of the inorganic particles and the thickness T (?m) of the coating resin layer satisfy the following relational expression (1): 0.007?D/T?0.24.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: November 23, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Shintaro Anno, Takuro Watanabe, Yasuaki Hashimoto, Yasuo Kadokura, Kazutsuna Sasaki, Jumpei Iwasaki
  • Publication number: 20210278773
    Abstract: An electrostatic charge image developing carrier includes: magnetic particles; and a resin layer coating the magnetic particles and containing inorganic particles, in which an average particle diameter of the inorganic particles is 5 nm or more and 90 nm or less, an average thickness of the resin layer is 0.6 ?m or more and 1.4 ?m or less, and a ratio B/A of a surface area B of the electrostatic charge image developing carrier to a plan view area A of the electrostatic charge image developing carrier is 1.020 or more and 1.100 or less when a surface of the electrostatic charge image developing carrier is three-dimensionally analyzed.
    Type: Application
    Filed: July 31, 2020
    Publication date: September 9, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Jumpei IWASAKI, Yasuo Kadokura, Shintaro Anno, Kazutsuna Sasaki, Satoshi Miura
  • Publication number: 20210271180
    Abstract: An electrostatic charge image developing carrier includes: magnetic particles; and a resin layer coating the magnetic particles and containing inorganic particles, in which an exposed area ratio of the magnetic particles is 0.1% or more and 4.0% or less, an average particle diameter of the inorganic particles is 5 nm or more and 90 nm or less, and a ratio B/A of a surface area B of the electrostatic charge image developing carrier to a plan view area A of the electrostatic charge image developing carrier is 1.020 or more and 1.100 or less when a surface of the electrostatic charge image developing carrier is three-dimensionally analyzed.
    Type: Application
    Filed: July 31, 2020
    Publication date: September 2, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kazutsuna SASAKI, Yasuo KADOKURA, Shintaro ANNO, Satoshi MIURA, Jumpei IWASAKI
  • Patent number: 11048183
    Abstract: An electrostatic-image developing toner includes toner particles, aggregated silica particles A treated with an oil, and aggregated or non-aggregated silica particles B rendered hydrophobic with a hydrophobizing agent other than an oil. The average particle size Da of the aggregated silica particles A and the average particle size Db of the silica particles B satisfy Da?Db. The electrostatic-image developing toner does not include any external additive other than the aggregated silica particles A or the silica particles B, or the electrostatic-image developing toner includes an external additive other than the aggregated silica particles A or the silica particles B, the other external additive having an average particle size smaller than the average particle size Da.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: June 29, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Takuro Watanabe, Yoshimasa Fujihara, Daisuke Noguchi, Shintaro Anno, Satoshi Miura
  • Publication number: 20210088924
    Abstract: A carrier for electrostatic image development includes: a core material; and a coating resin layer that contains inorganic particles and covers the core material. The content of the inorganic particles is 10% by mass or more and 60% by mass or less based on the total mass of the coating resin layer. The volume average diameter D (?m) of the inorganic particles and the thickness T (?m) of the coating resin layer satisfy the following relational expression (1): 0.007?D/T?0.24.
    Type: Application
    Filed: April 6, 2020
    Publication date: March 25, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro ANNO, Takuro WATANABE, Yasuaki HASHIMOTO, Yasuo KADOKURA, Kazutsuna SASAKI, Jumpei IWASAKI
  • Publication number: 20210072657
    Abstract: An electrostatic-image developing toner includes toner particles, aggregated silica particles A treated with an oil, and aggregated or non-aggregated silica particles B rendered hydrophobic with a hydrophobizing agent other than an oil. The average particle size Da of the aggregated silica particles A and the average particle size Db of the silica particles B satisfy Da?Db. The electrostatic-image developing toner does not include any external additive other than the aggregated silica particles A or the silica particles B, or the electrostatic-image developing toner includes an external additive other than the aggregated silica particles A or the silica particles B, the other external additive having an average particle size smaller than the average particle size Da.
    Type: Application
    Filed: February 4, 2020
    Publication date: March 11, 2021
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takuro Watanabe, Yoshimasa Fujihara, Daisuke Noguchi, Shintaro Anno, Satoshi Miura
  • Patent number: 10928745
    Abstract: An electrostatic charge image developing toner includes: toner particles including an amorphous resin and a crystalline polyester resin including a polycondensate of a linear dicarboxylic acid and a linear dialcohol having 2 to 12 carbon atoms; and an external additive including silica particles having a BET specific surface area of 100 m2/g or more. The electrostatic charge image developing toner satisfies the expression: 0.05??H2/?H1?0.95, wherein ?H1 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a first temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008), and ?H2 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a second temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008).
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: February 23, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoshi Miura, Yoshimasa Fujihara, Shintaro Anno, Daisuke Noguchi, Takuro Watanabe
  • Publication number: 20200301300
    Abstract: An electrostatic charge image developing toner includes: toner particles including an amorphous resin and a crystalline polyester resin including a polycondensate of a linear dicarboxylic acid and a linear dialcohol having 2 to 12 carbon atoms; and an external additive including silica particles having a BET specific surface area of 100 m2/g or more. The electrostatic charge image developing toner satisfies the expression: 0.05??H2/?H1?0.95, wherein ?H1 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a first temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008), and ?H2 (mW/g) is an endothermic energy amount based on an endothermic peak derived from the crystalline polyester resin in a second temperature increase process in differential scanning calorimetry according to ASTM D3418-8 (2008).
    Type: Application
    Filed: December 26, 2019
    Publication date: September 24, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi MIURA, Yoshimasa FUJIHARA, Shintaro ANNO, Daisuke NOGUCHI, Takuro WATANABE
  • Patent number: 10739689
    Abstract: An electrostatic charge image developer contains a carrier including a core and, on the core, a silicone resin-containing layer serving as a lower layer, and an acrylic resin-containing layer serving as an upper layer, or a carrier including a silicone resin-containing core and an acrylic resin-containing layer on the silicone resin-containing core; strontium titanate particles having an average primary particle size of 20 nm or more and 100 nm or less; and a toner. The percentage of a silicone resin exposed on a surface of the carrier is 0.5 area % or more and 20 area % or less.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: August 11, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shintaro Anno, Yosuke Tsurumi, Takuro Watanabe, Fusako Kiyono
  • Publication number: 20200096888
    Abstract: An electrostatic charge image developer contains a carrier including a core and, on the core, a silicone resin-containing layer serving as a lower layer, and an acrylic resin-containing layer serving as an upper layer, or a carrier including a silicone resin-containing core and an acrylic resin-containing layer on the silicone resin-containing core; strontium titanate particles having an average primary particle size of 20 nm or more and 100 nm or less; and a toner. The percentage of a silicone resin exposed on a surface of the carrier is 0.5 area % or more and 20 area % or less.
    Type: Application
    Filed: January 31, 2019
    Publication date: March 26, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro ANNO, Yosuke TSURUMI, Takuro WATANABE, Fusako KIYONO
  • Patent number: 10514652
    Abstract: A developer set includes a first developer and a second developer. The first developer includes a first toner and a first carrier. The second developer includes a second toner and a second carrier. The second toner is a toner that includes a flaky brilliant pigment, a toner that includes a white pigment, or a transparent toner. The second carrier has a higher volume resistivity than the first carrier and has a larger volume average particle diameter than the first carrier.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: December 24, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shintaro Anno, Hiroaki Saijo, Takuro Watanabe, Yasuaki Hashimoto, Fusako Kiyono
  • Patent number: 10503091
    Abstract: A carrier for electrostatic image development includes: resin-coated magnetic particles each including a magnetic particle and a resin layer that covers the magnetic particle; and strontium titanate particles composed of primary particles having an average circularity of 0.82 to 0.94 and an 84% cumulative circularity of more than 0.92.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: December 10, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yosuke Tsurumi, Moegi Iguchi, Shintaro Anno, Toshiaki Hasegawa
  • Publication number: 20190286000
    Abstract: A carrier for electrostatic image development includes: resin-coated magnetic particles each including a magnetic particle and a resin layer that covers the magnetic particle; and strontium titanate particles composed of primary particles having an average circularity of 0.82 to 0.94 and an 84% cumulative circularity of more than 0.92.
    Type: Application
    Filed: September 4, 2018
    Publication date: September 19, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Moegi IGUCHI, Shintaro ANNO, Toshiaki HASEGAWA
  • Patent number: 10359730
    Abstract: An image forming apparatus includes: a first image forming unit that includes a first image holding member and a first developing unit, the first developing unit accommodating a first developer that includes a first toner and a first carrier; a first transfer unit; a second image forming unit that is disposed downstream of the first image forming unit in a traveling direction of the transfer medium and includes a second image holding member and a second developing unit, the second developing unit accommodating a second developer that includes a second toner and a second carrier; and a second transfer unit, in which a volume resistivity of the first carrier is lower than a volume resistivity of the second carrier, and a volume average particle diameter of the first carrier is less than a volume average particle diameter of the second carrier.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: July 23, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shintaro Anno, Hiroaki Saijo, Takuro Watanabe, Yasuaki Hashimoto, Fusako Kiyono
  • Publication number: 20190204774
    Abstract: A developer set includes a first developer and a second developer. The first developer includes a first toner and a first carrier. The second developer includes a second toner and a second carrier. The second toner is a toner that includes a flaky brilliant pigment, a toner that includes a white pigment, or a transparent toner. The second carrier has a higher volume resistivity than the first carrier and has a larger volume average particle diameter than the first carrier.
    Type: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro ANNO, Hiroaki SAIJO, Takuro WATANABE, Yasuaki HASHIMOTO, Fusako KIYONO
  • Patent number: 10303078
    Abstract: An image forming apparatus includes: a first image forming unit that includes a first image holding member and a first developing unit, the first developing unit accommodating a first developer that includes a first toner and a first carrier; a first transfer unit; a second image forming unit that is disposed downstream of the first image forming unit in a traveling direction of a transfer medium and includes a second image holding member and a second developing unit, the second developing unit accommodating a second developer that includes a second toner and a second carrier; and a second transfer unit, in which a volume resistivity of the first carrier is higher than a volume resistivity of the second carrier, and a volume average particle diameter of the first carrier is more than a volume average particle diameter of the second carrier.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: May 28, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shintaro Anno, Yasuaki Hashimoto, Takuro Watanabe, Hiroaki Saijo, Fusako Kiyono
  • Publication number: 20190094739
    Abstract: An image forming apparatus includes: a first image forming unit that includes a first image holding member and a first developing unit, the first developing unit accommodating a first developer that includes a first toner and a first carrier; a first transfer unit; a second image forming unit that is disposed downstream of the first image forming unit in a traveling direction of a transfer medium and includes a second image holding member and a second developing unit, the second developing unit accommodating a second developer that includes a second toner and a second carrier; and a second transfer unit, in which a volume resistivity of the first carrier is higher than a volume resistivity of the second carrier, and a volume average particle diameter of the first carrier is more than a volume average particle diameter of the second carrier.
    Type: Application
    Filed: April 24, 2018
    Publication date: March 28, 2019
    Applicant: FUJI XEROX CO.,LTD.
    Inventors: Shintaro ANNO, Yasuaki HASHIMOTO, Takuro WATANABE, Hiroaki SAIJO, Fusako KIYONO
  • Publication number: 20190094787
    Abstract: An image forming apparatus includes: a first image forming unit that includes a first image holding member and a first developing unit, the first developing unit accommodating a first developer that includes a first toner and a first carrier; a first transfer unit; a second image forming unit that is disposed downstream of the first image forming unit in a traveling direction of the transfer medium and includes a second image holding member and a second developing unit, the second developing unit accommodating a second developer that includes a second toner and a second carrier; and a second transfer unit, in which a volume resistivity of the first carrier is lower than a volume resistivity of the second carrier, and a volume average particle diameter of the first carrier is less than a volume average particle diameter of the second carrier.
    Type: Application
    Filed: April 19, 2018
    Publication date: March 28, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shintaro ANNO, Hiroaki SAIJO, Takuro WATANABE, Yasuaki HASHIMOTO, Fusako KIYONO
  • Patent number: 10088763
    Abstract: An electrostatic charge image developer includes a brilliant toner that includes a toner particle having an average equivalent circle diameter D longer than an average maximum thickness C and a carrier that includes a core particle and a coating layer which covers a surface of the core particle, wherein the coating layer contains a resin and a surfactant, and a content of the surfactant is in a range of 50 ppm to 200 ppm with respect to the entire weight of the carrier.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 2, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Motoko Sakai, Shuji Sato, Shintaro Anno, Takuro Watanabe
  • Patent number: 9996016
    Abstract: An electrostatic charge image developing toner includes toner mother particles containing at least a binder resin, elastomer particles including a first oil, and inorganic particles including a second oil, wherein a viscosity of the first oil is equal to or higher than a viscosity of the second oil.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: June 12, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Fusako Kiyono, Shintaro Anno, Hiroki Ohmori, Emi Matsushita