Patent ID: 7432031

Claim:
A toner for electrostatic charge developing prepared by a production method comprising aggregating one or more kinds of particles in a raw material dispersion including the particles to form aggregated particles, and coalescing the aggregated particles by heating, wherein at least one kind of the particles is resin particles including an amorphous polyester resin synthesized by copolymerizing one or more polyvalent carboxylic acids and two or more polyhydric alcohols; at least one of the polyvalent carboxylic acids is a polyvalent carboxylic acid having a sulfonic acid group; two of the polyhydric alcohols are an ethylene oxide adduct of bisphenol A and a propylene oxide adduct of bisphenol A; and the following equation (1) is satisfied: 10/90 ≦BPA ( EO )/ BPA ( PO )≦90/10 Equation (1) wherein, BPA(EO) represents a total mole amount of the ethylene oxide adduct of bisphenol A used in synthesis of the amorphous polyester resin, and BPA(PO) represents a total mole amount of the propylene oxide adduct of bisphenol A used in synthesis of the amorphous polyester resin, and wherein the amorphous polyester resin comprises particles having an average particle diameter in a range of between 0.005 μm to 0.5 μm.