Patent ID: 8021817
Filing Date: 2011-09-20
Classification: G03G

Abstract:
1. A method of manufacturing an aggregate of resin-containing particles, comprising: aggregating the resin-containing particles containing binder resin and colorant by using an aggregate dispersant and a salt of divalent or higher valent metal in an aqueous medium, comprising: a dispersing step for dispersing in an aqueous medium, irregular resin particles containing the binder resin and the colorant in the presence of the aggregate dispersant, to obtain a slurry of the irregular resin particles; a finely-granulating step for finely granulating the irregular resin particles contained in the slurry to obtain a slurry of the resin-containing particles; and an aggregating step for aggregating the resin-containing particles by adding the salt of divalent or higher valent metal to the slurry of the resin-containing particles; wherein the aggregate dispersant comprises a polymer in which an anionic polar group is bonded to a main chain, and an amount of the salt of divalent or higher valent metal added to the slurry of the resin-containing particles is such that a total valence of an anionic polar group contained in the polymer is larger than a total valence of the salt of divalent or higher valent metal.