Patent ID: 10698328

Abstract:
Provided is an electrostatic image developing toner including: toner mother particles containing a binder resin and a releasing agent; and an external additive, wherein the binder resin contains a crystalline resin, and the electrostatic image developing toner satisfies the following formulas (1) and (2), tan δ3° C./min<tan δ6° C./min  Formula (1):0.0005≤tan δ6° C./min−tan δ3° C./min,  Formula (2): wherein: tan δ6° C./min is a peak top value of a loss tangent when the loss tangent is measured from 25° C. to 100° C. at a frequency of 1 Hz and a heating rate of 6° C./min; and tan δ3° C./min is a peak top value of a loss tangent when the loss tangent is measured from 25° C. to 100° C. at a frequency of 1 Hz and a heating rate of 3° C./min.