Patent ID: 8871419

Claim:
A production process of a toner for electrostatic image development, which comprises toner particles containing a binder resin, the process comprising: an aggregating step of adding an aggregating agent composed of a compound containing a transition element into an aqueous medium in which fine binder resin particles formed of the binder resin have been dispersed, thereby aggregating the fine binder resin particles; and an aggregation-stopping step of adding an aggregation stopper composed of sulfur atom-containing compound exhibiting a reducing action on the aggregating agent into the aqueous medium in which the fine binder resin particles have been aggregated, wherein the aggregation stopper is composed of a sulfur atom-containing compound selected from sodium thiosulfate, sodium sulfite, sodium hydrogensulfite, sodium sulfide, hydrogen sulfide, sulfurous acid, sulfur dioxide, sodium hyposulfite, dithionous acid, sodium dithionite, thiourea dioxide, sodium α-hydroxymethanesulfinate and zinc α-hydroxymethanesulfinate.