Patent ID: 7588874

Claim:
A toner for developing an electrostatic image, comprising a binder resin having a glass transition onset temperature of from 45 to 70° C., a colorant and a releasing agent, wherein the releasing agent has an endothermic peak temperature measured by a differential scanning calorimeter in a range of from 60 to 100° C. and has an average dispersion particle diameter in the toner of from 150 to 1,500 nm, and the toner satisfies the following equation: 0.05≦( a/b )× c ≦0.6 where a is an endothermic amount of the releasing agent per unit weight (J/g) at temperatures equal to or lower than a glass transition onset temperature of the binder resin, measured by the differential scanning calorimeter; b is a total endothermic amount of the releasing agent per unit weight (J/g); and c is a volume average particle diameter of the toner and is in unit of μm.