Patent ID: 9012121
Filing Date: 2015-04-21
Classification: G03G

Abstract:
1. A method for preparing a colored toner, the method comprising the following steps: a) providing surface-treated colorant particles as an initiating agent, wherein the surface-treated colorant particles comprise a first initiator group for atom transfer radical polymerization (ATRP); mixing the surface-treated colorant particles with a first monomer that can undergo ATRP and heating to allow the first monomer to polymerize by ATRP onto the first initiator group to produce polymer-grafted colorant particles, and then dispersing the polymer-grafted colorant particles in a first aqueous solution comprising a first surfactant to yield a first emulsion; b) providing surface-treated wax particles as an initiating agent, wherein the surface-treated wax particles comprise a second initiator group for ATRP; mixing the surface-treated wax particles with a second monomer that can undergo ATRP and heating to allow the second monomer to polymerize by ATRP onto the second initiator group to produce polymer-grafted wax particles, and then dispersing the polymer-grafted wax particles in a second aqueous solution comprising a second surfactant to yield a second emulsion; and c) agglutinating the first emulsion and the second emulsion to obtain a colored toner.