Patents by Inventor Kohichi Toriyama

Kohichi Toriyama 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: 20230092971
    Abstract: This electrophotographic photoreceptor includes at least a laminated photoreceptive layer, in which a charge generating layer and a charge transporting layer are laminated in this order on a conductive base. The charge transporting layer contains at least a charge transporting substance, a binder resin, and silica particles, and contains 0.1 ppm or more and 20 ppm or less of Na element and/or 0.01 ppm or more and 10 ppm or less of K element.
    Type: Application
    Filed: August 23, 2022
    Publication date: March 23, 2023
    Inventors: Akiko KIHARA, Kohichi TORIYAMA
  • Publication number: 20220413403
    Abstract: The present disclosure provides an electrophotographic photoreceptor including, on a conductive base, at least a photoreceptive layer or alternatively at least the photoreceptive layer and a protective layer laminated on the photoreceptive layer, in which both or either one of the photoreceptive layer and the protective layer contains a perimidine compound represented by general formula (I): (wherein X represents hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, and m represents an integer of 1 to 6).
    Type: Application
    Filed: June 13, 2022
    Publication date: December 29, 2022
    Inventors: Kohichi TORIYAMA, Kenta YOSHIDA
  • Publication number: 20180151302
    Abstract: A photoelectric conversion element according to the present disclosure includes an electron-transporting layer, a hole-transporting layer, and a light-absorbing layer interposed between the electron-transporting layer and the hole-transporting layer.
    Type: Application
    Filed: October 23, 2017
    Publication date: May 31, 2018
    Inventors: Hiroshi SUGIMURA, Kohichi TORIYAMA, Takahiro KURAUCHI
  • Patent number: 8911922
    Abstract: A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: December 16, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Satoshi Katayama, Kohichi Toriyama, Mami Adachi, Kotaro Fukushima, Junichi Washo
  • Publication number: 20130330664
    Abstract: A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Satoshi KATAYAMA, Kohichi TORIYAMA, Mami ADACHI, Kotaro FUKUSHIMA, Junichi WASHO
  • Patent number: 8535860
    Abstract: A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: September 17, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Satoshi Katayama, Kohichi Toriyama, Mami Adachi, Kotaro Fukushima, Junichi Washo
  • Patent number: 8076047
    Abstract: An electrophotographic photoreceptor comprising at least a photosensitive layer formed by laminating a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material in this order, on a conductive support, wherein the charge generation layer contains an oxotitanylphthalocyanine as the charge generation material and metal oxide microparticles, and the electrophotographic photoreceptor has photosensitive properties in light source of wavelength range from 360 to 420 nm.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: December 13, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kotaro Fukushima, Kohichi Toriyama
  • Publication number: 20090245868
    Abstract: An electrophotographic photoreceptor comprising at least a photosensitive layer formed by laminating a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material in this order, on a conductive support, wherein the charge generation layer contains an oxotitanylphthalocyanine as the charge generation material and metal oxide microparticles, and the electrophotographic photoreceptor has photosensitive properties in light source of wavelength range from 360 to 420 nm.
    Type: Application
    Filed: March 23, 2009
    Publication date: October 1, 2009
    Inventors: Kotaro Fukushima, Kohichi Toriyama
  • Publication number: 20090214970
    Abstract: A coating liquid for an undercoat layer of an electrophotographic photoreceptor which is formed by sequentially stacking the undercoat layer and a photosensitive layer on an electrically conductive support, wherein the coating liquid comprises titanium oxide microparticles and silicon nitride microparticles as an inorganic compound, a binder resin and an organic solvent.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 27, 2009
    Inventors: Satoshi Katayama, Kohichi Toriyama, Mami Adachi, Kotaro Fukushima, Junichi Washo