Patents by Inventor Kazuaki Miyashita

Kazuaki Miyashita 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: 7144663
    Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: December 5, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Sano, Yoshitsugu Moizumi, Kazuaki Miyashita
  • Publication number: 20040157174
    Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.
    Type: Application
    Filed: February 11, 2004
    Publication date: August 12, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yasushi Sano, Yoshitsugu Moizumi, Kazuaki Miyashita
  • Patent number: 6730469
    Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: May 4, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Sano, Yoshitsugu Moizumi, Kazuaki Miyashita
  • Publication number: 20030108828
    Abstract: In the apparatus for liquid preparation, the silver halide emulsion contained in a dedicated pot is transferred as liquid by a mohno pump via a piping into a measuring tank. The silver halide emulsion transferred into the measuring tank is measured with a load cell and is melted by heating with a jacket while being stirred by a stirrer. Accordingly, even when a small amount is used as in the case of the silver halide emulsion used in the heat-developable photosensitive material, the time for heating the silver halide emulsion, within the time range from the liquid preparation of the silver halide emulsion to its utilization, can be made short to the utmost, and hence the time elapse in melt can be suppressed. Thus, the time elapse in melt, reagent loss, and mutual contamination in the liquid preparation of photographic reagents can be effectively prevented.
    Type: Application
    Filed: July 1, 2002
    Publication date: June 12, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yasushi Sano, Yoshitsugu Moizumi, Kazuaki Miyashita
  • Patent number: 6020118
    Abstract: A silver halide photographic material has at least one photosensitive silver halide emulsion layer and at least one non-photosensitive hydrophilic colloid layer on a support. The silver coverage per surface is 1.0-2.2 g/m.sup.2. The silver halide emulsion layer contains silver halide grains wherein tabular silver halide grains having an aspect ratio of at least 5 account for at least 50% of the entire projected area of silver halide grains. The silver halide grains have been grown on pure silver bromide or silver chlorobromide grains as nuclei so as to form silver iodobromide or silver chloroiodobromide having a silver iodide content of 0.1-3.20 mol % at the end of growth. This X-ray photosensitive material having high sensitivity and sharpness is used with a regular screen.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: February 1, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihisa Hashi, Kazuaki Miyashita, Junichi Yamanouchi