Patent 7700253 was granted and assigned to Konica Minolta on April, 2010 by the United States Patent and Trademark Office.
An electrophotographic toner is disclosed, comprising a binding resin, a colorant and a releasing agent, wherein the releasing agent comprises a first releasing agent component of a monoester compound represented by formula (1) and a second releasing agent component composed of a hydrocarbon compound having a branched chain structure, and the first releasing agent component accounting for 40% to 98% by mass of the total amount of the first and second releasing agent components:R1—COO—R2 (1)wherein R1 and R2 are each independently a hydrocarbon group having 13 to 30 carbon atoms.