Patent ID: 8722300

Claim:
An electrophotographic toner comprising: latex; a colorant; and a releasing agent comprising an ester group, an amount of the ester group in the releasing agent being in a range of about 2 to about 10% by weight based on the total weight of the releasing agent, wherein the absolute value of a differential value of complex viscosity with respect to temperature,  ⅆ η ⅆ T  , of the electrophotographic toner in a temperature range of about 100° C. to about 160° C. is in a range of about 0.03 to about 0.06, and complex viscosity (η) of the electrophotographic toner at 140° C. is in a range of about 1.0×10 2 Pa·s to about 6.0×10 2 Pa·s.