Patents by Inventor Tohiaki Ino

Tohiaki Ino 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).

  • EXTERNAL TONER ADDITIVE, TONER AND IMAGE FORMING APPARATUS USING THE SAME
    Publication number: 20090017390
    Abstract: To provide a toner and an image forming apparatus using the toner, the toner contains an external additive that can suppress adherence of impurities to a discharge electrode of a corona discharger and prevent occurrence of charging unevenness. The external toner additive is comprised of a particulate metal oxide with trimethylsilyl groups introduced on the surface thereof, the volatile amount of trimethylsilanol being specified to be 0.25 ?g or below based on a method for quantitative analysis of trimethylsilanol in the external additive. The toner of the present invention is specified such that the volatile amount of trimethylsilanol is specified to be 0.02 ?g or below based on a method for quantitative analysis of trimethylsilanol in the toner.
    Type: Application
    Filed: June 9, 2008
    Publication date: January 15, 2009
    Inventors: Akiko Tsuji, Tohiaki Ino, Yasuhiro Nishimura