Patents by Inventor Yasuaki Hashimoto

Yasuaki Hashimoto 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: 20200301302
    Abstract: An electrostatic-image developer includes a toner and a resin-coated carrier. The toner includes toner particles including a binder resin, a release agent, and a non-ionic surfactant. The resin-coated carrier includes magnetic particles and a resin layer covering the magnetic particles. The resin-coated carrier has an absolute specific gravity of 3 g/cm3 or more and 4 g/cm3 or less.
    Type: Application
    Filed: August 13, 2019
    Publication date: September 24, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Yasuaki HASHIMOTO, Hiroaki SAIJO
  • Publication number: 20200301297
    Abstract: An electrostatic-image developer includes a toner and a resin-coated carrier. The toner includes toner particles including a binder resin, a release agent, and a non-ionic surfactant. The resin-coated carrier includes magnetic particles and a resin layer covering the magnetic particles. The resin layer includes inorganic particles having a volume resistivity of 1×100 ?·cm or more and 1×104 ?·cm or less.
    Type: Application
    Filed: August 14, 2019
    Publication date: September 24, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuaki Hashimoto, Yosuke Tsurumi, Hiroaki Saijo
  • 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: 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: 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
  • 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
  • Patent number: 10025210
    Abstract: An electrostatic charge image developing toner includes toner particles, silica particles having an average particle diameter of 80 nm to 200 nm, lubricant particles N which has negatively chargeable property, and lubricant particles P which has positively chargeable property, wherein a content (s) of the silica particles, a content (n) of the lubricant particles N, and a content (p) of the lubricant particles P satisfy relationships of Expression (1): 0.002?p/s?0.2; and Expression (2): 0.02?n/s?0.5.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: July 17, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takeshi Tanabe, Sakon Takahashi, Yasuaki Hashimoto, Masaaki Usami, Yuka Zenitani, Hiroshi Kamada, Moegi Iguchi, Yuta Saeki, Hiroaki Saijo
  • Patent number: 9910372
    Abstract: An electrostatic charge image developing toner includes: toner particles; first silica particles having an average circularity of 0.9 to 1.0, a particle size distribution index of 1.05 to 1.25, and a compression aggregation degree of 60% to 95%; and second silica particles having an average circularity of 0.9 to 1.0, a particle size distribution index of 1.05 to 1.25, and a compression aggregation degree of 60% to 95%, wherein, when an average primary particle diameter of the first silica particles is set as Da (nm) and an average primary particle diameter of the second silica particles is set as Db (nm), relationships of the following Expressions (A1) to (A3) are satisfied: Expression (A1): 80?Da?120, Expression (A2): 120?Db?200, and Expression (A3): 10?Db?Da?120.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 6, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Moegi Iguchi, Sakon Takahashi, Takeshi Tanabe, Hiroshi Kamada, Yasuaki Hashimoto, Masaaki Usami, Yuka Zenitani, Yuta Saeki, Hiroaki Saijo
  • Patent number: 9835962
    Abstract: There is provided an electrostatic image-developing toner containing a binder resin, a coloring agent and a release agent having a melting temperature of 85° C. to 120° C., the toner having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, wherein a mode value of the distribution of the eccentricity degree B of the release agent-containing island part, represented by the specific formula, is from 0.75 to 1.00 and a skewness of the distribution of the eccentricity degree B is from ?1.30 to ?0.50.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: December 5, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoshi Kamiwaki, Akira Matsumoto, Tsuyoshi Murakami, Satoshi Miura, Atsushi Sugawara, Yukiaki Nakamura, Kana Yoshida, Yutaka Saito, Sakon Takahashi, Yasuaki Hashimoto, Koji Sasaki, Tsutomu Furuta
  • Publication number: 20170315460
    Abstract: An electrostatic charge image developing toner includes toner particles, silica particles having an average particle diameter of 80 nm to 200 nm, lubricant particles N which has negatively chargeable property, and lubricant particles P which has positively chargeable property, wherein a content (s) of the silica particles, a content (n) of the lubricant particles N, and a content (p) of the lubricant particles P satisfy relationships of Expression (1): 0.002?p/s?0.2; and Expression (2): 0.02?n/s?0.5.
    Type: Application
    Filed: November 4, 2016
    Publication date: November 2, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takeshi TANABE, Sakon TAKAHASHI, Yasuaki HASHIMOTO, Masaaki USAMI, Yuka ZENITANI, Hiroshi KAMADA, Moegi IGUCHI, Yuta SAEKI, Hiroaki SAIJO
  • Publication number: 20170315459
    Abstract: An electrostatic charge image developing toner includes: toner particles; first silica particles having an average circularity of 0.9 to 1.0, a particle size distribution index of 1.05 to 1.25, and a compression aggregation degree of 60% to 95%; and second silica particles having an average circularity of 0.9 to 1.0, a particle size distribution index of 1.05 to 1.25, and a compression aggregation degree of 60% to 95%, wherein, when an average primary particle diameter of the first silica particles is set as Da (nm) and an average primary particle diameter of the second silica particles is set as Db (nm), relationships of the following Expressions (A1) to (A3) are satisfied: Expression (A1): 80?Da?120, Expression (A2): 120?Db?200, and Expression (A3): 10?Db?Da?120.
    Type: Application
    Filed: October 27, 2016
    Publication date: November 2, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Moegi IGUCHI, Sakon TAKAHASHI, Takeshi TANABE, Hiroshi KAMADA, Yasuaki HASHIMOTO, Masaaki USAMI, Yuka ZENITANI, Yuta SAEKI, Hiroaki SAIJO
  • Publication number: 20160275992
    Abstract: An information processing apparatus according to an embodiment includes an extraction unit, an analysis unit, and a display processing unit. The extraction unit detects switching between scenes in a video content and extracts images of the respective scenes from the video content. The analysis unit analyzes temporal transition of acoustic information contained in the video content. The display processing unit displays a list of the images of the respective scenes extracted by the extraction unit and an image indicating the temporal transition of acoustic information analyzed by the analysis unit on a display unit.
    Type: Application
    Filed: February 10, 2016
    Publication date: September 22, 2016
    Applicant: YAHOO JAPAN CORPORATION
    Inventors: Masaya SAKAI, Masaki NOGUCHI, Naoaki YAMASHITA, Yasuaki HASHIMOTO, Shingo HOSHINO, Ryusuke ETCHU, Shigenori KAMATA, Mikiko HIRANO
  • Patent number: 9442404
    Abstract: There is provided an electrostatic-image-developing toner containing: a toner particle which contains a binder resin containing a polyester resin, a release agent, and a styrene (meth)acrylic resin and in which the styrene (meth)acrylic resin forms a domain having a number average diameter of 300 nm to 800 nm in the toner particle; and an inorganic particle in which the number average diameter of the domain is from 1.5 times to 10 times the number average particle diameter of the inorganic particle.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: September 13, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yutaka Saito, Sakon Takahashi, Yasuaki Hashimoto, Tsutomu Furuta, Yuka Yamagishi
  • Publication number: 20160091810
    Abstract: There is provided an electrostatic image-developing toner containing a toner particle containing a binder resin and a release agent and having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, in which a mode value of the distribution of the eccentricity degree B represented by the specific formula of the release agent-containing island part is from 0.75 to 0.98 and a skewness of the distribution of the eccentricity degree B is from ?1.10 to ?0.50; and an external additive containing a silica particle having a volume average particle diameter of 80 nm to 200 nm; wherein a bulk density of the toner is from 0.33 g/cm3 to 0.40 g/cm3.
    Type: Application
    Filed: February 18, 2015
    Publication date: March 31, 2016
    Inventors: Tsutomu FURUTA, Yutaka SAITO, Yasuaki HASHIMOTO, Sakon TAKAHASHI
  • Publication number: 20160085165
    Abstract: There is provided an electrostatic image-developing toner containing a binder resin, a coloring agent and a release agent having a melting temperature of 85° C. to 120° C., the toner having a sea-island structure involving a sea part containing the binder resin and an island part containing the release agent, wherein a mode value of the distribution of the eccentricity degree B of the release agent-containing island part, represented by the specific formula, is from 0.75 to 1.00 and a skewness of the distribution of the eccentricity degree B is from ?1.30 to ?0.50.
    Type: Application
    Filed: February 24, 2015
    Publication date: March 24, 2016
    Inventors: Satoshi KAMIWAKI, Akira MATSUMOTO, Tsuyoshi MURAKAMI, Satoshi MIURA, Atsushi SUGAWARA, Yukiaki NAKAMURA, Kana YOSHIDA, Yutaka SAITO, Sakon TAKAHASHI, Yasuaki HASHIMOTO, Koji SASAKI, Tsutomu FURUTA
  • Patent number: 9176411
    Abstract: An electrostatic charge image developing toner includes toner particles and silica particles, wherein the silica particles have an average equivalent circle diameter of from 70 nm to 400 nm, an average circularity of from 0.5 to 0.9, and a pore volume of from 0.05 cm3/g to 2.5 cm3/g.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: November 3, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Koji Sasaki, Satoshi Inoue, Yutaka Saito, Yasuaki Hashimoto, Emi Takahashi
  • Publication number: 20150268576
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin and a colorant, and strontium titanate particles, wherein the strontium titanate particles have a volume average particle diameter of 800 nm to 10,000 nm, a maximum peak at a Bragg angle of 32.2° in CuK? characteristic X-ray diffraction, and a half-value width of the maximum peak equal to or greater than 0.5 degrees.
    Type: Application
    Filed: January 6, 2015
    Publication date: September 24, 2015
    Inventors: Yutaka SAITO, Satoshi INOUE, Yasuaki HASHIMOTO, Hiroshi KAMADA, Tsutomu FURUTA
  • Patent number: 9052627
    Abstract: A toner for electrostatic charge image development has toner mother particles including a release agent, a colorant, and a binder resin including a crystalline resin, and an external additive to the toner mother particles including at least metatitanic acid and at least one selected from the group consisting of silicon oxide and fluoropolymer particles, and the addition weight ratio of the metatitanic acid to the at least one selected from the group consisting of silicon oxide and fluoropolymer particles is from 1:0.08 to 1:8.30 is provided.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: June 9, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yoshifumi Iida, Fusako Kiyono, Yasuaki Hashimoto