Patent ID: 7736831
Filing Date: 2010-06-15
Classification: G03G

Abstract:
1. A process for preparing a toner, comprising: mixing a polymeric resin emulsion, a colorant dispersion, and a wax to form a mixture; optionally adding a coagulant to said mixture; heating the mixture at a temperature below a glass transition temperature of said polymeric resin to aggregate said polymeric resin, colorant, and wax, to form aggregated particles; adding a coalescent agent to said aggregated particles, the coalescent agent being selected from the group consisting of benzoic acid alkyl esters, ester-alcohols, glycol-ether type solvents, long-chain aliphatic alcohols, aromatic alcohols, and mixtures thereof; heating the aggregated particles and coalescent agent at a temperature above the glass transition temperature of said polymeric resin, to coalesce said aggregated particles to form toner particles, optionally cooling the mixture; and isolating the toner particles.