Patents by Inventor Tadashi Takehana

Tadashi Takehana 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: 5885698
    Abstract: An electrophotographic image-receiving film is disclosed which comprises an transparent support having on one side thereof an image-receiving layer, said support having on the other side thereof a back layer comprising an electro-conductive undercoat layer and an antifriction layer having a reduced coefficient of friction. The electrophotographic image-receiving film has excellent running properties and excellent antiblocking properties.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: March 23, 1999
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tadashi Takehana, Yoshio Tani, Kiyoshi Hosoi, Katsumi Harada
  • Patent number: 5733694
    Abstract: The present invention provides an electrophotographic transfer film which can provide improvements in the color development at the half tone (dot) area of a projected image and the anti-offset properties. A novel electrophotographic transfer film is disclosed which comprises an image receiving layer provided on at least one side of a transparent support is provided, wherein the image receiving layer comprises a polyester including (i) a repeating unit of a dibasic acid component containing at least one dicarboxylic acid unit selected from the group consisting of a telephthalic acid unit and a 2,6-naphthalenedicarboxylic acid unit, and a sulfobenzenedicarboxylic acid unit; and (ii) a repeating unit of a divalent alcohol component containing an ethylene glycol unit, a triethylene glycol unit and a bisphenol A-ethylene oxide adduct unit. A color image formation process is also provided which comprises forming a color image on the electrophotographic transfer film.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: March 31, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tadashi Takehana, Yoshio Tani, Kiyoshi Hosoi, Katsumi Harada
  • Patent number: 5510233
    Abstract: A photographic material comprises a support of a polyester film, a first subbing layer provided thereon, a second subbing layer comprising gelatin provided on the first subbing layer and a photographic layer provided on the second subbing layer. The first subbing layer is a layer of polyurethane latex cured with an epoxy compound or a dichloro-s-triazine derivative, otherwise the first subbing layer comprises a polymer which has breaking elongation of not more than 300% or stress at 100% elongation of not less than 130 kg/cm.sup.2.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: April 23, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ken Nakanishi, Tadashi Takehana, Hiroyuki Tamaki, Sumio Nishikawa
  • Patent number: 5378592
    Abstract: A photographic material comprises a support of a polyester film, a first subbing layer provided thereon, a second subbing layer comprising gelatin provided on the first subbing layer and a photographic layer provided on the second subbing layer. The first subbing layer is a layer of polyurethane latex cured with an epoxy compound or a dichloro-s-triazine derivative, otherwise the first subbing layer comprises a polymer which has breaking elongation of not more than 300% or stress at 100% elongation of not less than 130 kg/cm.sup.2.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: January 3, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Ken Nakanishi, Tadashi Takehana, Hiroyuki Tamaki, Sumio Nishikawa