Patent ID: 8822121

Claim:
A toner to develop an electrostatic charge image, the toner comprising at least a binder resin, a colorant, and a releasing agent, wherein the binder resin comprises at least two kinds of binder resin having different weight average molecular weights, wherein a peak temperature of a loss tangent (tan δ) of the toner is equal to or greater than 64° C. and less than 70° C. and an average value of the loss tangent (tan δ) at a temperature ranging from 100° C. to 120° C. of the toner is equal to or greater than about 1.5 and equal to or less than about 2.0 in a dynamic viscoelasticity measurement conducted as a function of temperature under a condition of a measurement frequency of 6.28 rad/s, a heating rate of 2.0° C./min, and an initial strain of 0.3%, where tan δ is a tangent of a phase angle δ between deformation and response when stress or strain is applied to the toner.