Patents by Inventor Kenji Kajiwara

Kenji Kajiwara 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: 8962225
    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: Grant
    Filed: April 11, 2013
    Date of Patent: February 24, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tomoya Sasaki, Katsumi Nukada, Wataru Yamada, Hidekazu Hirose, Kenji Kajiwara, Yuko Iwadate
  • Patent number: 8951701
    Abstract: Provided is a composition for forming a charge transporting film, including a solvent having a dielectric constant of 5.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: February 10, 2015
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuko Iwadate, Katsumi Nukada, Wataru Yamada, Hidekazu Hirose, Tomoya Sasaki, Kenji Kajiwara
  • Patent number: 8900783
    Abstract: An electrophotographic photoreceptor includes an electroconductive substrate; a photosensitive layer that is provided on the electroconductive substrate; and an outermost surface layer, wherein the outermost surface layer is a layer made of a cured product of a composition that contains position isomer mixture of at least one kind among non-charge transporting compounds represented by Formulae (I) and (II) and at least one kind among non-reactive charge transporting materials.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: December 2, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsumi Nukada, Wataru Yamada, Hidekazu Hirose, Yuko Iwadate, Kenji Kajiwara
  • Publication number: 20140321882
    Abstract: Provided is a composition for forming a charge transporting film, including a solvent having a dielectric constant of 5.
    Type: Application
    Filed: July 14, 2014
    Publication date: October 30, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuko IWADATE, Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Tomoya SASAKI, Kenji KAJIWARA
  • Publication number: 20140295337
    Abstract: An electrophotographic photoreceptor includes a conductive substrate; a charge generating layer provided on the conductive substrate; a charge transporting layer provided on the charge generating layer, which is configured to include a charge transporting material and a polycarbonate; and an outermost surface layer provided on the charge transporting layer, which is constituted with a cured film formed of a composition including a chain polymerizable compound having at least a charge transporting skeleton and a chain polymerizable functional group in the same molecule, and has an A value represented by the following equation (1) being from 0.1 to 0.3, and a B value represented by the following equation (2) being 0.02 or less, each of which is determined by an Attenuated total reflection Fourier transform infrared spectroscopy: A=(S1/S13)?(S0/S03)??Equation (1) B=S2/S23??Equation (2).
    Type: Application
    Filed: September 3, 2013
    Publication date: October 2, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuko IWADATE, Wataru YAMADA, Hidekazu HIROSE, Kenji KAJIWARA, Katsumi NUKADA, Ryo SEKIGUCHI, Takayuki ITO
  • Patent number: 8846280
    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: Grant
    Filed: February 16, 2012
    Date of Patent: September 30, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Wataru Yamada, Katsumi Nukada, Yuko Iwadate, Tomoya Sasaki, Kenji Kajiwara
  • Publication number: 20140255835
    Abstract: An electrophotographic photoreceptor includes an electroconductive substrate; a photosensitive layer that is provided on the electroconductive substrate; and an outermost surface layer, wherein the outermost surface layer is a layer made of a cured product of a composition that contains position isomer mixture of at least one kind among non-charge transporting compounds represented by Formulae (I) and (II) and at least one kind among non-reactive charge transporting materials.
    Type: Application
    Filed: August 22, 2013
    Publication date: September 11, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Katsumi NUKADA, Wataru YAMADA, Hidekazu HIROSE, Yuko IWADATE, Kenji KAJIWARA
  • 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
  • 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
  • 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
  • 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
  • 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: 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
  • 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
  • Publication number: 20130317157
    Abstract: Disclosed is a vinyl chloride resin composition that is excellent in thermal stability, coloring resistance and processability, free from heavy metal stabilizers such as lead, tin and barium, and thus is suitable for use in building materials, and specifically provides a vinyl chloride resin composition containing (a) an organic acid calcium salt and/or an organic acid zinc salt, (b) calcium acetylacetonate and/or zinc acetylacetonate, (c) a hydrotalcite compound and (d) a polyol mixture in specific contents with respect to a vinyl chloride resin, wherein a polyol mixture having a specific composition is used as the polyol mixture that is the component (d).
    Type: Application
    Filed: December 28, 2011
    Publication date: November 28, 2013
    Applicant: ADEKA CORPORATION
    Inventors: Tadashi Sengoku, Kenji Kajiwara, Yohei Harada, Masumi Mizu
  • 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
  • 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: 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