Patents by Inventor Hirokazu Kambara

Hirokazu Kambara 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).

  • Method of producing an electrostatic charge image developing toner
    Patent number: 7323283
    Abstract: A pulverized starting material is supplied quantitatively from a quantitative feeder 1 to a first mechanical pulverizer 2 where the material is pulverized moderately, the resulting moderately pulverized material is supplied quantitatively from a quantitative feeder 3 to a second mechanical pulverizer 4 where the material is finely pulverized, and the resulting finely pulverized material is introduced into a coarse-powder classifier 5 to classify coarse powder not smaller than a predetermined particle diameter. The finely pulverized material from which the coarse powder was removed by classification is further classified fine powder not larger than a predetermined size by a fine-powder classifier 7 to produce a classified product, while the separated classified coarse powder is introduced into a returning-powder feeder 6.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: January 29, 2008
    Assignee: Toyo Ink Mgf. Co., Ltd.
    Inventors: Nobuyuki Yoshimoto, Hirokazu Kambara, Tomomi Yamazaki
  • Method of producing an electrostatic charge image developing toner
    Publication number: 20050266333
    Abstract: A pulverized starting material is supplied quantitatively from a quantitative feeder 1 to a first mechanical pulverizer 2 where the material is pulverized moderately, the resulting moderately pulverized material is supplied quantitatively from a quantitative feeder 3 to a second mechanical pulverizer 4 where the material is finely pulverized, and the resulting finely pulverized material is introduced into a coarse-powder classifier 5 to classify coarse powder not smaller than a predetermined particle diameter. The finely pulverized material from which the coarse powder was removed by classification is further classified fine powder not larger than a predetermined size by a fine-powder classifier 7 to produce a classified product, while the separated classified coarse powder is introduced into a returning-powder feeder 6.
    Type: Application
    Filed: March 2, 2005
    Publication date: December 1, 2005
    Inventors: Nobuyuki Yoshimoto, Hirokazu Kambara, Tomomi Yamazaki