Patent ID: 8187784
Filing Date: 2012-05-29
Classification: C08J,G03G

Abstract:
1. A method for manufacturing a toner composition comprising toner particles, comprising: kneading at least a colorant and a binder resin to prepare a master batch colorant; dispersing or swelling toner constituents comprising at least the master batch colorant and a resin in an organic solvent capable of dissolving or swelling at least the binder resin and the resin to prepare an oil phase liquid, wherein the resin is the same as the binder resin or different from the binder resin; emulsifying the oil phase liquid in an aqueous liquid comprising sodium dodecylbenzenesulfonate to prepare an emulsion; coagulating the emulsion; drying the coagulated emulsion to prepare the toner particles; and removing the organic solvent from the emulsion before said coagulating wherein said binder resin comprises a polyol resin prepared by reacting an epoxy resin, a compound having one active hydrogen therein which can react with the epoxy group of the epoxy resin, a compound having two or more active hydrogens therein which can react with the epoxy group of the epoxy resin, and an adduct of a dihydric phenol with an alklyene oxide or its glycidyl ether represented by wherein the content of the units obtained from the adduct of a dihydric phenol with an alklyene oxide or its glycidyl ether represented by the formula above is from 10 to 40% by weight, each R represents one of the following groups: and m and n are independently a positive integer, where the total of m and n is from 2 to 6.