Manufacturing method of electrostatic charge image developing toner

Abstract

A manufacturing method of an electrostatic charge image developing toner includes a first aggregation step of aggregating polyester resin particles in a dispersion containing the polyester resin particles to form first aggregated particles, a second aggregation step of mixing the dispersion containing the first aggregated particles with a dispersion containing amorphous polyester resin particles, and while agitating the mixed dispersions, adhering the amorphous polyester resin particles on a surface of the first aggregated particles to form second aggregated particles, and a coalescence step of heating the dispersion containing the second aggregated particles for coalescing the second aggregated particles to form toner particles, in which the second aggregation step satisfies the following expression (1), expression (2), and expression (3), 35 ≤ Tc ≤ ( Tgs - 5 ) , expression ⁢ ( 1 ) 10 ≤ Ts ≤ Tc , expression ⁢ ( 2 ) 0.6 ≤ ( P - P ⁢ 0 ) ≤ 3. , expression ⁢ ( 3 ) where Tgs is a glass transition temperature (° C.) of an amorphous polyester resin contained in the amorphous polyester resin particles, Tc is a temperature (° C.) of the dispersion containing the first aggregated particles at a start of the mixing, Ts is a temperature (° C.) of the dispersion containing the amorphous polyester resin particles at the start of the mixing, P is an agitation power (kW/m3) per unit volume, and P0 is an idle agitation power (kW/m3) per unit volume.

Dependencies are inferred from the claim text.