Patents by Inventor Shuya Sugimoto

Shuya Sugimoto 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: 11016403
    Abstract: An electrophotographic photoconductor is provided that includes a conductive substrate, an undercoat layer overlying the conductive substrate, and a photosensitive layer overlying the undercoat layer. The undercoat layer contains zinc oxide particles and a binder resin and has a volume resistivity of 0.03×106 ?·cm or less in an electrical field of 5 V/?m at a temperature of 23 degrees C. and a relative humidity of 55%. The photosensitive layer contains a compound represented by the following general formula (1): where each of R1 to R3 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: May 25, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideki Nakamura, Tadayoshi Uchida, Shuya Sugimoto, Mitsuaki Hirose, Noboru Toriu, Kaori Harada
  • Publication number: 20200233325
    Abstract: An electrophotographic photoconductor is provided that includes a conductive substrate, an undercoat layer overlying the conductive substrate, and a photosensitive layer overlying the undercoat layer. The undercoat layer contains zinc oxide particles and a binder resin and has a volume resistivity of 0.03×106 ?·cm or less in an electrical field of 5 V/?m at a temperature of 23 degrees C. and a relative humidity of 55%. The photosensitive layer contains a compound represented by the following general formula (1): where each of R1 to R3 independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 23, 2020
    Inventors: Hideki Nakamura, Tadayoshi Uchida, Shuya Sugimoto, Mitsuaki Hirose, Noboru Toriu, Kaori Harada