Patent ID: 8632936

Claim:
A method for producing an electrophotographic toner comprising: (step 1) a step of preparing a thermally treated resin particle dispersion by retaining, for one hour or longer at a temperature T satisfying the following relation represented by the following formula 1, a dispersion of resin particles (A) having a volume median particle size (D 50 ) of 0.02 to 2 μm and containing a resin containing a crystalline polyester (a1) in an amount of 1 to 50 wt % and an amorphous polyester (b1): (the melting point of the crystalline polyester(a1)−35)(° C.)<T<the melting point of the crystalline polyester(a1)(° C.) (formula 1); (step 2) a step of preparing an aggregated particle dispersion by aggregating thermally treated resin particles contained in the thermally treated resin particle dispersion prepared through step 1; (step 2a) a step of preparing resin-fine-particle-attached aggregated particles by adding, to the aggregated particle dispersion prepared through step 2, a dispersion of resin fine particles (B) containing an amorphous polyester (b2) in an amount of 70 wt % or more; and (step 3) a step of unifying the resin-fine-particle-attached aggregated particles prepared through step 2a.