Patents by Inventor Hiroyuki Osada

Hiroyuki Osada 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: 6078773
    Abstract: An image forming apparatus has a first image bearing member and an intermediate transfer member onto which a toner image formed on the first image bearing member is primarily transferred and through which the toner image thus transferred is secondarily transferred onto a second image bearing member. The intermediate transfer member has a surface layer on a base layer and the surface layer contains a polyurethane resin obtained by the reaction of an olefinpolyol with an isocyanate.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: June 20, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Shimojo, Akira Shimada, Hiroyuki Osada, Atsushi Tanaka, Tsunenori Ashibe
  • Patent number: 5995794
    Abstract: An image forming apparatus has a first image bearing member and an intermediate transfer belt onto which a toner image formed on the first image bearing member is primarily transferred is secondarily tranferred onto a second image bearing member. The intermediate tranfer belt has, in its non-image forming region, a tape having a volume resistivity of 10.sup.10 .OMEGA..multidot.cm or above, a bond strength of 0.5 kg or above and a breaking extension of 5% or more.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: November 30, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Osada, Minoru Shimojo, Akira Shimada, Atsushi Tanaka, Tsunenori Ashibe
  • Patent number: 5978638
    Abstract: The present invention concerns an image forming apparatus for forming a toner image on a transfer medium by use of an intermediate transfer belt, and also the intermediate transfer belt itself. The intermediate transfer belt has an elastic layer JIS-A hardness of which is 85.degree. or less and at least one covering layer formed on the elastic layer. A relative permittivity .epsilon. and thickness t (.mu.m) of the at least one covering layer satisfy relations of .epsilon..ltoreq.6 and t.gtoreq..epsilon., and the intermediate transfer belt includes a fiber. The effects of this .epsilon. value and the fiber inside enabled to suppress scattering of toner well.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 2, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Minoru Shimojo, Akira Shimada, Hiroyuki Osada, Tsunenori Ashibe
  • Patent number: 5671468
    Abstract: A charging device includes a movable member to be charged; a charging member contactable to the member to be charged to electrically charge the member to be charged; a discharging device, disposed upstream of a contact portion between the charging member and the member to be charged with respect to a movement direction of the member to be charged, for electrically discharging the member to be charged at a portion adjacent to the contact portion.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: September 23, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeo Yamamoto, Tetsuya Kuribayashi, Takao Honda, Fumihiro Arahira, Hiroyuki Osada
  • Patent number: 5322854
    Abstract: A novel antibiotic Reveromycin A represented by the following formula: ##STR1## and a process for preparing said antibiotic which comprises the steps of cultivating a strain which belongs to genus Streptomyces and produces the antibiotic Reveromycin A, and recovering the antibiotic Reveromycin A from the culture product are provided. The antibiotic is useful for its anti-leukemia and antifungal activities.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: June 21, 1994
    Assignees: Rikagaku Kenkyusho, Snow Brand Milk Products Co., Ltd.
    Inventors: Kiyoshi Isono, Hiroyuki Osada, Hidetoshi Takahashi, Gosei Kawanishi