Patents by Inventor Tadaaki Sumitani

Tadaaki Sumitani 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: 20200166428
    Abstract: A road damage calculation system of the present invention includes a load detector that detects a load applied to a road from a vehicle on the road, and a server including a hardware processor that calculates road damage from the load obtained by the load detector and accumulates the calculated road damage to calculate accumulated road damage.
    Type: Application
    Filed: November 25, 2019
    Publication date: May 28, 2020
    Inventors: Asahi EBE, Takayuki DOUI, Shinichi IIZUKA, Tetsuo HIRATA, Masashi AOKI, Tadaaki SUMITANI
  • Publication number: 20200164884
    Abstract: A road damage control system of the present invention includes a load detector that detects a load applied to a road from a vehicle on the road, and a server including a hardware processor that calculates road damage from the load obtained by the load detector, accumulates the calculated road damage to calculate accumulated road damage, estimates a road life from an allowable total road damage amount and the accumulated road damage, and outputs information about traffic regulation to be performed on the road to extend the estimated road life.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 28, 2020
    Inventors: Asahi EBE, Shinichi IIZUKA, Takayuki DOUI, Tetsuo HIRATA, Masashi AOKI, Tadaaki SUMITANI
  • Patent number: 8182970
    Abstract: An electrophotographic image forming method is disclosed. The method includes electrically charging a photoreceptor, imagewise exposing the photoreceptor so that a latent image is formed on the photoreceptor, supplying a lubricant on a surface of the photoreceptor, and developing the latent image with a toner so that a toner image is formed on the photoreceptor, transferring the toner image and cleaning the photoreceptor, in which the photoreceptor has an electro-conductive substrate, a photosensitive layer and a protective layer containing inorganic particles, a ratio RSm/D50 of an average length of surface roughness profile element in the direction making a right angle with the driving direction of the photoreceptor RSm (?m) to a number-based median diameter of the toner D50 is from 0.4 to 2.0, and a skewness of the surface roughness profile of the photoreceptor in the direction making a right angle with the driving direction of the photoreceptor Rsk is from ?3.0 to 0.0.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: May 22, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Tomoo Sakimura, Hirohiko Seki, Nobuaki Kobayashi, Tadaaki Sumitani
  • Patent number: 8177604
    Abstract: A surface abrading method of an electrophotographic photoreceptor is disclosed, comprising abrading the surface of a photosensitive layer with an abrading member entrained about a backup roll with feeding the abrading member and rotating the photoreceptor, while moving the abrading member parallel to a rotating shaft of the photoreceptor with bringing the abrading member into contact with the photosensitive layer surface, wherein the abrading member comprises a solid body on a backing material, the solid body contains abrasive grains and is provided on the backing material brought into contact with the photosensitive layer surface, and the top face of the solid body exhibits a surface roughness (Ry) of from 4.0 to 8.0 ?m.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: May 15, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Junji Ujihara, Hirohiko Seki, Nobuaki Kobayashi, Tadaaki Sumitani
  • Publication number: 20120064350
    Abstract: An intermediate transfer belt for use in an image forming apparatus of an electro-photographing type, includes a substrate; and a surface-cured layer provided on the substrate; wherein the surface-cured layer contains a reaction product of at least an active energy ray curable monomer, reactive metal oxide particles, and a graft copolymer of a polymerizable fluorine resin and a polymerizable siloxane.
    Type: Application
    Filed: August 30, 2011
    Publication date: March 15, 2012
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Akihiro HONYA, Toshio TOKUYASU, Junji UJIHARA, Tadaaki SUMITANI
  • Publication number: 20110070537
    Abstract: An image forming method employing a photoreceptor and a polymerization toner, wherein the photoreceptor comprises a photosensitive layer provided on a surface of a cylindrical electroconductive substrate, a surface of the photoreceptor has a shape composed of plural lower portions and plural higher portions, a surface roughness of a top surface of the higher portions is 0.01 to 0.5 ?m, and a volume based median particle diameter of the polymerization toner is 3 to 8 ?m.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 24, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Tadaaki SUMITANI, Nobuaki KOBAYASHI
  • Publication number: 20100197200
    Abstract: A surface abrading method of an electrophotographic photoreceptor is disclosed, comprising abrading the surface of a photosensitive layer with an abrading member entrained about a backup roll with feeding the abrading member and rotating the photoreceptor, while moving the abrading member parallel to a rotating shaft of the photoreceptor with bringing the abrading member into contact with the photosensitive layer surface, wherein the abrading member comprises a solid body on a backing material, the solid body contains abrasive grains and is provided on the backing material brought into contact with the photosensitive layer surface, and the top face of the solid body exhibits a surface roughness (Ry) of from 4.0 to 8.0 ?m.
    Type: Application
    Filed: January 20, 2010
    Publication date: August 5, 2010
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Junji UJIHARA, Hirohiko SEKI, Nobuaki KOBAYASHI, Tadaaki SUMITANI
  • Publication number: 20090297972
    Abstract: An electrophotographic image forming method is disclosed. The method includes electrically charging a photoreceptor, imagewise exposing the photoreceptor so that a latent image is formed on the photoreceptor, supplying a lubricant on a surface of the photoreceptor, and developing the latent image with a toner so that a toner image is formed on the photoreceptor, transferring the toner image and cleaning the photoreceptor, in which the photoreceptor has an electro-conductive substrate, a photosensitive layer and a protective layer containing inorganic particles, a ratio RSm/D50 of an average length of surface roughness profile element in the direction making a right angle with the driving direction of the photoreceptor RSm (?m) to a number-based median diameter of the toner D50 is from 0.4 to 2.0, and a skewness of the surface roughness profile of the photoreceptor in the direction making a right angle with the driving direction of the photoreceptor Rsk is from ?3.0 to 0.0.
    Type: Application
    Filed: May 20, 2009
    Publication date: December 3, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Tomoo SAKIMURA, Hirohiko SEKI, Nobuaki KOBAYASHI, Tadaaki SUMITANI
  • Patent number: 6921435
    Abstract: A coating apparatus for a plurality of cylindrical light sensitive members each for use in an electrophotography, is provided with a coating tank in which a coating liquid is stored; a dipping device to lift down the plurality of cylindrical base members into the coating liquid and to lift up the plurality of cylindrical base members above the coating liquid so that the plurality of cylindrical base members are coated with the coating liquid; and a plurality of drying hoods corresponding in number to the plurality of cylindrical base members and provided above the coating tank so that each of the plurality of cylindrical base members is lifted up from the coating tank into a respective drying hood among the plurality of cylindrical base members.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 26, 2005
    Assignee: Konica Corporation
    Inventors: Kenichi Yasuda, Nobuaki Kobayashi, Tadaaki Sumitani
  • Publication number: 20030037727
    Abstract: A coating apparatus for a plurality of cylindrical light sensitive members each for use in an electrophotography, is provided with a coating tank in which a coating liquid is stored; a dipping device to lift down the plurality of cylindrical base members into the coating liquid and to lift up the plurality of cylindrical base members above the coating liquid so that the plurality of cylindrical base members are coated with the coating liquid; and a plurality of drying hoods corresponding in number to the plurality of cylindrical base members and provided above the coating tank so that each of the plurality of cylindrical base members is lifted up from the coating tank into a respective drying hood among the plurality of cylindrical base members.
    Type: Application
    Filed: July 29, 2002
    Publication date: February 27, 2003
    Inventors: Kenichi Yasuda, Nobuaki Kobayashi, Tadaaki Sumitani