Patents by Inventor Nobuaki Tsuji

Nobuaki Tsuji 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: 4861702
    Abstract: A silver halide photographic light-sensitive material and a process for processing it are disclosed. The light-sensitive material is improved in photographic sensitivity, drying property and anti-roller-mark property and is suitable for the disclosed ultra-rapid processing by an automatic processor in which the photographic material is processed for the time of 20 sec to 60 sec in total. The light-sensitive material comprises a support having on at least one side thereof one or more hydrophilic layers containing gelatin which comprise at least one light-sensitive silver halide emulsion layer. An amount of the gelatin contained in said hydrophilic layer or layers is within the range of from 1.90 to 3.50 g/m.sup.2 and a swelling amount of said hydrophilic layer or layers is within the range of from 30 to 58 g/m.sup.2 when said light-sensitive material is treated in a specific condition for 15 sec. at 35.degree. C.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: August 29, 1989
    Assignee: Konica Corporation
    Inventors: Akio Suzuki, Eiji Yoshida, Satoru Nagasaki, Masumi Arai, Nobuaki Tsuji
  • Patent number: 4847189
    Abstract: A silver halide photographic material is capable of super-rapid processing with the total time of 20 to 60 minutes and is high in sensitivity, low in fogginess and excellent in pressure resistance and graininess. The photographic material is comprises a support bearing a hydrophilic colloial layer including at least one light sensitive silver halide emulsion layer thereon, whereinsilver halide grains contained in the silver halide emulsion layer are mainly comprised of tabular grains which have an aspect ratio of the grain size to the grain thickness of not lower than 5, and the projective areas of the whole tabular grain occupy not less than 50% of the projective areas of the whole silver halide grain in the emulsion layer,the melting time of the silver halide photographic light-sensitive material is within the range of from not shorter than 45 minutes, andon the side bearing the hydrophilic colloidal layer containing the silver halide emulsion layer, an amount of gelatin is within the range of from 2.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: July 11, 1989
    Assignee: Konica Corporation
    Inventors: Akio Suzuki, Eiji Yoshida, Satoru Nagasaki, Masumi Arai, Nobuaki Tsuji
  • Patent number: H674
    Abstract: A silver halide photographic light-sensitive material comprising a support having the first photographic structural layer comprising one or more layers on a side of the support and the second photographic structural layer comprising one or more layers on the other side of the support, in which at least one of the photographic structural layers comprises a silver halide light-sensitive emulsion layer, and the total amount of gelatin contained in the photographic structural layer comprising the silver halide emulsion layer is within the range of from 2.25 g/m.sup.2 to 3.15 g/m.sup.2. The uppermost layer of the photographic structural layer comprising the silver halide emulsion is formed by coating of a solution having a surface tension of from 15 to 26 dyn/cm, and the second photographic structural layer is coated and gelled simultaneously with coating and drying of the first photographic structural layer.
    Type: Grant
    Filed: November 3, 1987
    Date of Patent: September 5, 1989
    Assignee: Konica Corporation
    Inventors: Satoru Nagasaki, Akio Suzuki, Eiji Yoshida, Masumi Arai, Nobuaki Tsuji