BLACK POLYMERIZED TONER HAVING CORE-SHELL STRUCTURE

摘要

There is provided a black polymerized toner having a core-shell structure. The black polymerized toner is manufactured in a suspension polymerization method; includes a binder resin monomer, a charge control agent, Carbon Black, a molecular weight control agent, a wax, a dispersing agent, a polar grafting agent, a hydrophilic polymer and a pigment; and a hydrophilic polymer forms a polymer membrane in a shell surface. The black polymerized toner may be useful to maximize charge density of the charge control agent in the toner surface by adding a polar grafting agent in the polymerization of toner, and to improve charging characteristics and the polymerization stability of the toner by adding a pigment and a hydrophilic polymer to minimize the reduction in the charge density of the toner by the Carbon Black.