Patents by Inventor Mitsutoshi Nakamura

Mitsutoshi Nakamura 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).

  • Photosensitive member comprising charge generating layer and charge transporting layer
    Patent number: 4810606
    Abstract: A photosensitive member of the present invention comprises an electrically conductive substrate, a charge generating layer and a charge transporting layer comprising amorphous carbon which contains hydrogen.The charge transporting layer contains about 0.1 to about 7 atomic % of oxygen and/or about 0.1 to about 5 atomic % of nitrogen based on all the constituent atoms therein.The photosensitive member of this construction is excellent in electrophotographic characteristics inclusive of charge transportability and charging ability.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: March 7, 1989
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Shuji Iino, Hideo Hotomi, Isao Doi, Mitsutoshi Nakamura, Izumi Osawa
  • Photosensitive member with hydrogen-containing carbon layer
    Patent number: 4749636
    Abstract: The present invention provides a photosensitive member comprising a carrier transporting layer of hydrogen-containing carbon, which is excellent in a charge transportability, a chargeability, a rigidity and resistances to corona, acid, moisture and heat, and has so small residual potential.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: June 7, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Shuji Iino, Hideo Hotomi, Izumi Osawa, Mitsutoshi Nakamura
  • Photosensitive member with hydrogen-containing carbon layer
    Patent number: 4743522
    Abstract: The present invention provides a photosensitive member comprising a carrier transporting layer of hydrogen-containing carbon and an adhesive layer of hydrogen-containing carbon, said adhesive layer comprising at least one element selected from silicon, germanium and aluminum. The photosensitive member of the present invention is excellent in a charge transporting property, an adhesive property of a substrate with a hydrogen-containing layer, a chargeability, a rigidity and resistances to corona, acid, moisture and heat.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: May 10, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Shuji Iino, Hideo Hotomi, Izumi Osawa, Mitsutoshi Nakamura
  • Photosensitive member having undercoat layer of amorphous carbon
    Patent number: 4741982
    Abstract: The present invention provides a new photosensitive member which comprises a hydrogen-containing carbon undercoat layer controlled in the polarity by an element of IIIA or VA group, a hydrogen-containing C:H charge transporting layer and a charge generating layer, which has an excellent charge transortability, a charging ability, and preventing properties of charge injection and of increase of residual potential.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: May 3, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Shuji Iino, Hideo Hotomi, Izumi Osawa, Mitsutoshi Nakamura
  • Photosensitive member having an amorphous carbon transport layer
    Patent number: 4738912
    Abstract: The present invention provides a photosensitive member comprising a hydrogen-containing carbon layer as a charge transporting layer, which contains an element selected from the group consisting of Si, Ge and Sn; the hydrogen-containing carbon layer facilitates the injection of charge and decreases residual potential, and memory and increases sensitivity. Accordingly, a photosensitive member of the present invention is excellent in charge transporting property, sensitivity, charge holding property and imaged copy can be obtained.
    Type: Grant
    Filed: September 10, 1986
    Date of Patent: April 19, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Shuji Iino, Hideo Hotomi, Izumi Osawa, Mitsutoshi Nakamura
  • Photosensitive member with an insulating layer of amorphous silicon
    Patent number: 4642279
    Abstract: The present invention relates to a photosensitive member which includes a photoconductive layer of amorphous silicon and an insulating layer formed thereover and including amorphous silicon, carbon and an element in Group III A of the Periodic Table. Carbon is included in an amount of about 35 to 65 atomic % at the outer most surface of the insulating layer and a minimum amount at the interface with the photoconductive layer. The Group III A element is included to control a majority carrier of the insulating layer to be a polarity opposite to the polarity of charging.
    Type: Grant
    Filed: July 10, 1985
    Date of Patent: February 10, 1987
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Yukio Tanigami, Shuji Iino, Mitsutoshi Nakamura
  • Photosensitive member with an insulating layer of amorphous silicon
    Patent number: 4642278
    Abstract: The present invention relates to a photosensitive member having a photoconductive layer of amorphous silicon. On the photoconductive layer, an amorphous silicon insulating layer is formed and this layer includes carbon and an element in Group IIIA of the Periodic Table. The Group IIIA element is included to control the conductivity of the insulating layer in such fashion that the majority carrier thereof is opposite in polarity to the charging polarity.
    Type: Grant
    Filed: July 10, 1985
    Date of Patent: February 10, 1987
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Yukio Tanigami, Shuji Iino, Mitsutoshi Nakamura