Patent ID: 7700253

Claim:
An electrophotographic toner comprising a binding resin, a colorant and a releasing agent, wherein the releasing agent comprises a first releasing agent component and a second releasing agent component, the first releasing agent component is a monoester compound represented by formula (1) and the second releasing agent component is a hydrocarbon compound having a branched chain structure, and the first releasing agent component accounting for 40% to 98% by mass of the first and second releasing agent components: R 1 —COO—R 2 formula (1) wherein R 1 and R 2 are each independently a hydrocarbon group having 13 to 30 carbon atoms, and wherein the toner is manufactured by a method of mini-emulsion polymerization coagulation, the method comprising the steps of: (1) solution/dispersion of dissolving or dispersing the first releasing agent and the second releasing agent in a polymerizable monomer to form a binder resin to obtain a polymerizable monomer solution, (2) polymerization of dispersing the polymerizable monomer solution in a form of oil-droplets dispersed in an aqueous medium and performing polymerization by a process of mini-emulsion polymerization to prepare a dispersion of binder resin particles and (3) coagulation/fusion of allowing the binder resin particles to be salted out, coagulated and fused to form coalesced particles.