Patents by Inventor Yuko IWADATE

Yuko IWADATE 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: 20140255834
    Abstract: An electrophotographic photoreceptor includes an electroconductive substrate, a photosensitive layer provided on the electroconductive substrate, and an outermost surface layer, wherein the outermost surface layer is a layer constituted with a cured product of a composition including at least one of non-charge transporting compounds represented by formulae (I) and (II), and at least one non-reactive charge transporting material:
    Type: Application
    Filed: August 16, 2013
    Publication date: September 11, 2014
    Inventors: Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Yuko IWADATE, Kenji KAJIWARA
  • Patent number: 8808952
    Abstract: Provided is a composition for forming a charge transporting film, including a solvent having a dielectric constant of 5.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: August 19, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuko Iwadate, Katsumi Nukada, Wataru Yamada, Hidekazu Hirose, Tomoya Sasaki, Kenji Kajiwara
  • Patent number: 8795933
    Abstract: An electrophotographic photoconductor includes a conductive substrate and an outermost surface layer on the conductive substrate. The outermost surface layer contains a copolymer (a) derived from a reactive monomer having charge transport property and a reactive monomer having no charge transport property, and a polymer prepared by polymerizing, in the presence of the copolymer (a), a reactive monomer (b) that has a solubility parameter (SP value) different from a solubility parameter (SP value) of the reactive monomer having no charge transport property by about 2 (cal/cm3)1/2 or less.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: August 5, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takatsugu Doi, Wataru Yamada, Yuko Iwadate, Katsumi Nukada
  • Publication number: 20140205939
    Abstract: An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer provided on the conductive substrate, and an outermost surface layer of the electrophotographic photoreceptor is constituted with a polymerized product or crosslinked product of a composition including at least one selected from reactive compounds represented by the formulae (I) and (II) and a non-reactive charge transporting material, a content of the non-reactive charge transporting material in the composition is from 5% by weight to 40% by weight based on the weight of the outermost surface layer, and a content of the reactive compound before the reaction in the outermost surface layer is 3% by weight or less based on the weight of the outermost surface layer.
    Type: Application
    Filed: September 25, 2013
    Publication date: July 24, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Yuko IWADATE, Kenji KAJIWARA
  • Patent number: 8748070
    Abstract: Provided is a thiol group-containing charge transporting material represented by the following general formula (1): F-[(G)a1-(X)a2—Y—SH]b??(1) wherein F represents an organic group derived from a charge transporting compound, G represents a divalent organic group having 1 to 5 carbon atoms, X represents a group selected from a —CO—O— group, an —O—CO— group, and an —O— group, Y represents a divalent organic group having 1 to 5 carbon atoms, a1 and a2 each independently represent 0 or 1, and b represents an integer of 1 or more and 6 or less.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: June 10, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsumi Nukada, Kenya Sonobe, Wataru Yamada, Takatsugu Doi, Tsuyoshi Miyamoto, Yuko Iwadate
  • Publication number: 20140079435
    Abstract: Provided is a reactive compound represented by the following General Formula (I): wherein in General Formula (I), F represents a charge transporting skeleton, D represents a group represented by the following General Formula (III), and m represents an integer of from 1 to 8: wherein in General Formula (III), L1 represents a divalent linking group including one or more —C(?O)—O— groups.
    Type: Application
    Filed: November 21, 2013
    Publication date: March 20, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Katsumi NUKADA, Wataru YAMADA, Takatsugu DOI, Yuko IWADATE, Kenji KAJIWARA
  • Patent number: 8673526
    Abstract: Provided is an electrophotographic photoreceptor including a substrate and an outermost layer containing a cured film of a composition containing a compound having a chain polymerizable functional group and a charge transporting skeleton in the same molecule, and at least one chain transfer agent selected from a compound having 4 or more primary thiol groups and a compound having 2 or more secondary thiol groups.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: March 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kenya Sonobe, Katsumi Nukada, Wataru Yamada, Takatsugu Doi, Tsuyoshi Miyamoto, Yuko Iwadate
  • Publication number: 20140072341
    Abstract: A charge transporting film includes a cured film of a composition containing at least one selected from reactive compounds represented by the following Formula (I): wherein F represents a charge transporting skeleton, D represents a group represented by Formula (IIa), m represents an integer of from 1 to 8, E represents a group represented by Formula (IIb), L represents a (n+1)-valent linking group including two or more selected from the group consisting of an alkylene group, an alkenylene group, —C(?O)—, —N(R)—, —S—, —O—, and a trivalent or tetravalent group derived from alkane or alkene, R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, n represents an integer of from 1 to 3, R0 represents a halogen atom, an alkyl group, or an alkoxy group, and n0 represents an integer of from 0 to 3.
    Type: Application
    Filed: April 11, 2013
    Publication date: March 13, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Kenji KAJIWARA, Yuko IWADATE
  • Publication number: 20140072906
    Abstract: Provided is an electrophotographic photoreceptor including a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer; and an outermost surface layer provided on the charge transporting layer, wherein the charge transporting layer includes a charge transporting material and a polycarbonate copolymer having a solubility parameter as calculated by a Feders method of from 11.40 to 11.75, and the outermost surface layer includes a charge transporting material, fluorine-containing resin particles, and a fluorine-containing dispersant.
    Type: Application
    Filed: April 22, 2013
    Publication date: March 13, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuko IWADATE, Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Tomoya SASAKI, Kenji KAJIWARA
  • Publication number: 20140072907
    Abstract: Provided is an electrophotographic photoreceptor including a conductive substrate and a photosensitive layer provided on the conductive substrate, wherein an outermost surface layer includes a cured film of a composition containing inorganic particles having polymerizable groups and at least one selected from the reactive compounds represented by the following formulae (I) and (II): wherein F represents a charge transporting skeleton; L represents a divalent linking group; and m represents an integer of 1 to 8, wherein F represents a charge transporting skeleton; L? represents an (n+1)-valent linking group; m? represents an integer of 1 to 6; and n represents an integer of 2 to 3.
    Type: Application
    Filed: April 24, 2013
    Publication date: March 13, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Yuko IWADATE, Kenji KAJIWARA
  • Patent number: 8669029
    Abstract: Provided is a reactive compound represented by the following General Formula (I): wherein in General Formula (I), F represents a charge transporting skeleton, D represents a group represented by the following General Formula (III), and m represents an integer of from 1 to 8: wherein in General Formula (III), L1 represents a divalent linking group including one or more —C(?O)—O— groups.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: March 11, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tomoya Sasaki, Katsumi Nukada, Wataru Yamada, Takatsugu Doi, Yuko Iwadate, Kenji Kajiwara
  • Patent number: 8663883
    Abstract: A charge-transporting film includes a polymer of a compound represented by Formula (I): (Ra)n-Fa-Xa-Fa?-(Ra?)n???(I) wherein Fa and Fa? independently represent a charge-transporting sub-unit including an aromatic ring, Ra and Ra? independently represent a —CH?CH2 directly bonded to the aromatic ring of the charge-transporting sub-unit or a group represented by Formula (a), Xa represents an alkylene group or a bivalent group in which an alkylene group and a group selected from —O—, —S—, and ester are combined, n and n? independently represent an integer of 0 or more (wherein n and n? are not simultaneously 0), and L represents a linking group which is represented by *—(CH2)n?—O—CH2— and which is bonded to the aromatic ring of the charge-transporting sub-unit, wherein n? is 1 or 2 and the linking group is bonded to the aromatic, ring of the charge-transporting sub-unit with *.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: March 4, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Wataru Yamada, Katsumi Nukada, Takatsugu Doi, Yuko Iwadate, Tomoya Sasaki
  • Publication number: 20130260295
    Abstract: Provided is a composition for forming a charge transporting film, including a solvent having a dielectric constant of 5.
    Type: Application
    Filed: September 11, 2012
    Publication date: October 3, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuko IWADATE, Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Tomoya SASAKI, Kenji KAJIWARA
  • Patent number: 8524433
    Abstract: An electrophotographic photoconductor includes a conductive substrate and an outermost surface layer formed on the conductive substrate and containing a binder resin and a copolymer derived from a reactive monomer having charge transport property and a reactive monomer having no charge transport property, the copolymer having a side chain with 4 or more carbon atoms in a constitutional unit derived from the reactive monomer having no charge transport property.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: September 3, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takatsugu Doi, Wataru Yamada, Yuko Iwadate, Katsumi Nukada
  • Publication number: 20130052573
    Abstract: Provided is a reactive compound represented by the following General Formula (I): wherein in General Formula (I), F represents a charge transporting skeleton, D represents a group represented by the following General Formula (III), and m represents an integer of from 1 to 8: wherein in General Formula (III), L1 represents a divalent linking group including one or more —C(?O)—O— groups.
    Type: Application
    Filed: March 26, 2012
    Publication date: February 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoya SASAKI, Katsumi NUKADA, Wataru YAMADA, Takatsugu DOI, Yuko IWADATE, Kenji KAJIWARA
  • Publication number: 20130052571
    Abstract: Provided is a compound represented by the following General Formula (I): wherein in General Formula (I), F represents a charge transporting subunit, L represents a linking group having a valency of (n+1) that is formed by combining two or more kinds selected from a group consisting of an alkylene group, —C?C— (an alkenylene group), —C(?O)—, —N(R)—, —O—, and —S—, and R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, m represents an integer of from 1 to 6, and n represents an integer of from 2 to 3.
    Type: Application
    Filed: February 16, 2012
    Publication date: February 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru YAMADA, Katsumi NUKADA, Yuko IWADATE, Tomoya SASAKI, Kenji KAJIWARA
  • Publication number: 20130052572
    Abstract: Provided is a compound represented by the following Formula (I): wherein in Formula (I), F represents a charge transporting skeleton, L represents a divalent linking group including a —(CH2)n—O— group, m represents an integer of from 1 to 8, and n represents an integer of from 3 to 6.
    Type: Application
    Filed: March 5, 2012
    Publication date: February 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Wataru YAMADA, Tomoya SASAKI, Yuko IWADATE, Kenji KAJIWARA
  • Publication number: 20130052570
    Abstract: A charge-transporting film includes a polymer of a compound represented by Formula (I): (Ra)n-Fa-Xa-Fa?-(Ra?)n???(I) wherein Fa and Fa? independently represent a charge-transporting sub-unit including an aromatic ring, Ra and Ra? independently represent a —CH?CH2 directly bonded to the aromatic ring of the charge-transporting sub-unit or a group represented by Formula (a), Xa represents an alkylene group or a bivalent group in which an alkylene group and a group selected from —O—, —S—, and ester are combined, n and n? independently represent an integer of 0 or more (wherein n and n? are not simultaneously 0), and L represents a linking group which is represented by *—(CH2)n?—O—CH2— and which is bonded to the aromatic ring of the charge-transporting sub-unit, wherein n? is 1 or 2 and the linking group is bonded to the aromatic, ring of the charge-transporting sub-unit with *.
    Type: Application
    Filed: February 8, 2012
    Publication date: February 28, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru YAMADA, Katsumi NUKADA, Takatsugu DOI, Yuko IWADATE, Tomoya SASAKI
  • Publication number: 20120231379
    Abstract: Provided is a fluorine-containing resin particle dispersion including: fluorine-containing resin particles, a resin which is not dissolved in at least one solvent in a group of hydroxyl group-containing solvents including an alcohol-based solvent having 1 to 10 carbon atoms, containing no aromatic ring in the molecule structure, and a water-based medium, and which is adhered on the surface of the fluorine-containing resin particles, and at least one solvent, in which the resin is not dissolved, in the group of hydroxyl group-containing solvents, in which the fluorine-containing resin particles having the resin adhered on the surface thereof are dispersed.
    Type: Application
    Filed: August 12, 2011
    Publication date: September 13, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Wataru YAMADA, Takatsugu DOI, Yuko IWADATE
  • Publication number: 20120196215
    Abstract: Provided is a thiol group-containing charge transporting material represented by the following general formula (1): F-[(G)a1-(X)a2—Y—SH]b??(1) wherein F represents an organic group derived from a charge transporting compound, G represents a divalent organic group having 1 to 5 carbon atoms, X represents a group selected from a —CO—O— group, an —O—CO— group, and an —O— group, Y represents a divalent organic group having 1 to 5 carbon atoms, a1 and a2 each independently represent 0 or 1, and b represents an integer of 1 or more and 6 or less.
    Type: Application
    Filed: August 25, 2011
    Publication date: August 2, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Kenya SONOBE, Wataru YAMADA, Takatsugu DOI, Tsuyoshi MIYAMOTO, Yuko IWADATE