Patents by Inventor Yuki TAKAMIYA

Yuki TAKAMIYA 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: 9612542
    Abstract: An electrostatic charge image developing toner includes a binder resin containing a polyester resin, a release agent, a colorant, and an aromatic aldehyde compound, the content of which exceeds 100 ppm and is equal to or smaller than 1200 ppm.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: April 4, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yuki Takamiya, Yuka Kawamoto, Daisuke Ishizuka, Noriyuki Mizutani
  • Patent number: 9482972
    Abstract: An electrostatic charge image developing toner includes toner particles including a binder resin that contains a copolymer formed by copolymerizing at least an aromatic vinyl monomer and an aliphatic unsaturated alkyl carboxylate ester, wherein a weight ratio of component M1 of the aromatic vinyl monomer and component M2 of the aliphatic unsaturated alkyl carboxylate ester in the copolymer satisfies the following expression (1), and a weight ratio of volatile component m1 of the aromatic vinyl monomer and volatile component m2 of the aliphatic unsaturated alkyl carboxylate ester, as measured by a headspace method, satisfies the following expression (2): 0.10?MW2/(MW1+MW2)?0.30??Expression (1) 0.70?mw2/(mw1+mw2)?0.98??Expression (2) wherein MW1 represents the weight of M1, MW2 represents the weight of M2, mw1 represents the weight of m1, and mw2 represents the weight of m2.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: November 1, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Daisuke Ishizuka, Yuki Takamiya, Yuka Kawamoto, Noriyuki Mizutani
  • Publication number: 20160313660
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin having a polyester resin and a styrene-(meth)acrylic acid alkyl copolymer resin, a release agent having a hydrocarbon release agent, and an oligomer which includes a styrene structure and whose content is in a range of 1% by weight to 6% by weight with respect to toner particles.
    Type: Application
    Filed: June 30, 2016
    Publication date: October 27, 2016
    Inventors: Erina SAITO, Noriyuki MIZUTANI, Daisuke ISHIZUKA, Kotaro YOSHIHARA, Yuki TAKAMIYA, Narumasa SATO, Yuka KAWAMOTO
  • Publication number: 20160070186
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin having a polyester resin and a styrene-(meth)acrylic acid alkyl copolymer resin, a release agent having a hydrocarbon release agent, and an oligomer which includes a styrene structure and whose content is in a range of 1% by weight to 6% by weight with respect to toner particles.
    Type: Application
    Filed: February 2, 2015
    Publication date: March 10, 2016
    Inventors: Erina SAITO, Noriyuki MIZUTANI, Daisuke ISHIZUKA, Kotaro YOSHIHARA, Yuki TAKAMIYA, Narumasa SATO, Yuka KAWAMOTO
  • Publication number: 20160070187
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin that contains a polyester resin having an ethylenically unsaturated double bond, a di- or higher valent metal ion, and (meth)acrylic acid alkyl ester that has an alkyl chain having 1 to 10 carbon atoms, wherein a content of the (meth)acrylic acid alkyl ester is in a range of 50 ppm to 500 ppm with respect to toner particles.
    Type: Application
    Filed: January 22, 2015
    Publication date: March 10, 2016
    Inventors: Yuka KAWAMOTO, Daisuke ISHIZUKA, Yuki TAKAMIYA, Noriyuki MIZUTANI
  • Publication number: 20160041485
    Abstract: An electrostatic charge image developing toner includes toner particles including a binder resin that contains a copolymer formed by copolymerizing at least an aromatic vinyl monomer and an aliphatic unsaturated alkyl carboxylate ester, wherein a weight ratio of component M1 of the aromatic vinyl monomer and component M2 of the aliphatic unsaturated alkyl carboxylate ester in the copolymer satisfies the following expression (1), and a weight ratio of volatile component m1 of the aromatic vinyl monomer and volatile component m2 of the aliphatic unsaturated alkyl carboxylate ester, as measured by a headspace method, satisfies the following expression (2): 0.10?MW2/(MW1+MW2)?0.30??Expression (1) 0.70?mw2/(mw1+mw2)?0.98??Expression (2) wherein MW1 represents the weight of M1, MW2 represents the weight of M2, mw1 represents the weight of m1, and mw2 represents the weight of m2.
    Type: Application
    Filed: February 26, 2015
    Publication date: February 11, 2016
    Inventors: Daisuke ISHIZUKA, Yuki TAKAMIYA, Yuka KAWAMOTO, Noriyuki MIZUTANI
  • Patent number: 9244372
    Abstract: An electrostatic charge image developing toner includes a binder resin, toner particles containing an acylglycerol, and an external additive, wherein at least one of hydroxyl groups in the acylglycerol is esterified with an alkyl monocarboxylic acid that contains a substituted or unsubstituted alkyl group having from 12 to 22 carbon atoms, and a content of a portion esterified with the alkyl monocarboxylic acid that contains the alkyl group having the same carbon number is 95 % by weight or greater with respect to the total weight of the acylglycerol.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: January 26, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yuki Takamiya, Eisuke Iwazaki, Shuji Sato, Noriyuki Mizutani
  • Publication number: 20150370187
    Abstract: An electrostatic charge image developing toner includes a binder resin containing a polyester resin, a release agent, a colorant, and an aromatic aldehyde compound, the content of which exceeds 100 ppm and is equal to or smaller than 1200 ppm.
    Type: Application
    Filed: October 6, 2014
    Publication date: December 24, 2015
    Inventors: Yuki TAKAMIYA, Yuka KAWAMOTO, Daisuke ISHIZUKA, Noriyuki MIZUTANI
  • Publication number: 20150111139
    Abstract: An electrostatic charge image developing toner includes a binder resin, toner particles containing an acylglycerol, and an external additive, wherein at least one of hydroxyl groups in the acylglycerol is esterified with an alkyl monocarboxylic acid that contains a substituted or unsubstituted alkyl group having from 12 to 22 carbon atoms, and a content of a portion esterified with the alkyl monocarboxylic acid that contains the alkyl group having the same carbon number is 95% by weight or greater with respect to the total weight of the acylglycerol.
    Type: Application
    Filed: April 16, 2014
    Publication date: April 23, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki TAKAMIYA, Eisuke IWAZAKI, Shuji SATO, Noriyuki MIZUTANI
  • Patent number: 8815482
    Abstract: A transparent electrostatic charge image developing toner contains a binder resin, europium, and bismuth.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: August 26, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuki Takamiya, Tsuyoshi Murakami, Eisuke Iwazaki, Satoshi Yoshida, Satoshi Inoue
  • Patent number: 8765343
    Abstract: An electrostatic latent image developing toner contains a binder resin, a colorant, europium, and bismuth.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: July 1, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuki Takamiya, Eisuke Iwazaki, Satoshi Yoshida, Satoshi Inoue
  • Publication number: 20140147778
    Abstract: A transparent electrostatic charge image developing toner includes a binder resin and a compound represented by the following Formula (1):
    Type: Application
    Filed: April 9, 2013
    Publication date: May 29, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tsuyoshi MURAKAMI, Eisuke IWAZAKI, Yuki TAKAMIYA
  • Publication number: 20140106270
    Abstract: A transparent electrostatic charge image developing toner includes a binder resin and a compound represented by the following Formula (1): wherein in Formula (1), R1 represents a methyl group or a trifluoromethyl group; R2 represents a hydrogen atom; R3 represents a methyl group, a trifluoromethyl group, a t-butyl group, a phenyl group, or a naphthyl group; and M represents a rare earth element.
    Type: Application
    Filed: May 2, 2013
    Publication date: April 17, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki TAKAMIYA, Tsuyoshi MURAKAMI, Eisuke IWAZAKI, Satoshi INOUE
  • Patent number: 8535864
    Abstract: A magenta toner including toner particles containing a colorant and a binder resin is provided. The colorant contains C.I. Pigment Red 122 and C.I. Pigment Yellow 180 and a mass ratio of the C.I. Pigment Red 122 and the C.I. Pigment Yellow 180 is in the range of 99:1 to 10000:1. The binder resin contains a polyester resin and a polyester resin having a repeating unit obtained from a Bisphenol A alkylene oxide adduct expressed by the following chemical formula is used as the polyester resin: wherein m and n independently represent an integer of 2 to 4, and x and y independently represent a positive number.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 17, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Eisuke Iwazaki, Yuki Takamiya, Satoshi Inoue
  • Publication number: 20130224643
    Abstract: A transparent electrostatic charge image developing toner contains a binder resin, europium, and bismuth.
    Type: Application
    Filed: July 5, 2012
    Publication date: August 29, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki TAKAMIYA, Tsuyoshi MURAKAMI, Eisuke IWAZAKI, Satoshi YOSHIDA, Satoshi INOUE
  • Publication number: 20130078564
    Abstract: A magenta toner including toner particles containing a colorant and a binder resin is provided. The colorant contains C.I. Pigment Red 122 and C.I. Pigment Yellow 180 and a mass ratio of the C.I. Pigment Red 122 and the C.I. Pigment Yellow 180 is in the range of 99:1 to 10000:1. The binder resin contains a polyester resin and a polyester resin having a repeating unit obtained from a Bisphenol A alkylene oxide adduct expressed by the following chemical formula is used as the polyester resin: wherein m and n independently represent an integer of 2 to 4, and x and y independently represent a positive number.
    Type: Application
    Filed: January 18, 2012
    Publication date: March 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Eisuke IWAZAKI, Yuki TAKAMIYA, Satoshi INOUE
  • Publication number: 20130071782
    Abstract: An electrostatic latent image developing toner contains a binder resin, a colorant, europium, and bismuth.
    Type: Application
    Filed: February 8, 2012
    Publication date: March 21, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki TAKAMIYA, Eisuke IWAZAKI, Satoshi YOSHIDA, Satoshi INOUE