Patents by Inventor Seiji Funakura

Seiji Funakura 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).

  • Publication number: 20020042014
    Abstract: The invention relates to a process for producing a polymerized toner, including the step of polymerizing a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium. After polymerization, an aqueous dispersion containing polymer particles formed is subjected to stripping under reduced pressure in an evaporator after polymerization. At this time, the aqueous dispersion within the evaporator is continuously taken out of the evaporator and heated in an external heat exchanger, and the heated aqueous dispersion is returned to a liquid phase within the evaporator and subjected to stripping under reduced pressure within the evaporator while circulating the aqueous dispersion, thereby distilling off volatile organic compounds. By the production process, a polymerized toner markedly reduced in the content of a residual polymerizable monomer and having excellent properties is provided.
    Type: Application
    Filed: September 26, 2001
    Publication date: April 11, 2002
    Inventors: Takeo Fujino, Kazuhiro Sato, Seiji Funakura