Patent ID: 8808958
Filing Date: 2014-08-19
Classification: G03G

Abstract:
1. A process for preparing a polymerized toner, which comprises the steps of: forming an aqueous dispersion comprising a dispersant; forming a monomer mixture comprising a binder resin monomer, carbon black, a styrene block copolymer, copper phthalocyanine, a charge control agent, and a wax; and adding the monomer mixture to the aqueous dispersion and subjecting the same to a suspension polymerization to form toner particles, wherein the styrene block copolymer and copper phthalyocyanine are used together as a dispersant for carbon black, and wherein 1 to 20 parts by weight of carbon black, 0.05 to 5 parts by weight of the styrene block copolymer, and 0.1 to 3 parts by weight of copper phthalocyanine are included with respect to 100 parts by weight of the monomer mixture.