ELECTROPHOTOGRAPHIC TONER AND IMAGE FORMING DEVICE WHICH USES THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an electropbotographic toner which realizes a fast process of copying and high picture quality and which shows excellent offset resistance without making the image forming device more complicated or without increasing the cost. SOLUTION: In the electrophotographic toner containing at least a binder resin, coloring agent and wax, the wax contains three kinds of wax which are a polyolefin wax having 140 to 150 deg.C melting point and 8,000 to 10,000 mol.wt., a polyolefin wax having 120 to 130 deg.C melting point and 1,700 to 1,900 mol.wt., and a polyolefin wax having 95 to 105 deg.C melting point and 1,500 to 1,700 mol.wt. The average particle diameter of the toner is controlled to 5.0 to 8.5μm.