Patent ID: 8039186

Claim:
A toner for developing an electrostatic image, the toner comprising: a binder resin, a releasing agent in an amount of from 5% to 30% by weight, and a colorant in an amount of from 4% to 15% by weight, wherein the binder resin comprises a polycondensation resin obtained by a polycondensation reaction of 1,9-nonanediol with 1,10-decane dicarboxylic acid, 1,9-nonanediol with sebacic acid, or 1,6-hexanediol with sebacic acid in the presence of a polycondensation catalyst, the releasing agent comprises a condensation compound that is a crystalline ester obtained by a condensation reaction of an alcohol and a carboxylic acid in the presence of a condensation catalyst, wherein the carboxylic acid is palmitic acid or behenic acid, and the alcohol is pentaerythritol or behenyl alcohol the releasing agent further comprises a wax, the toner contains a metallic element derived from the polycondensation catalyst and the condensation catalyst in an amount up to 10 ppm, the metallic element selected from the group of consisting of tin, titanium, antimony, beryllium, strontium, germanium and a rare earth metal, and the toner contains a sulfur component in an amount of from about 100 ppm to about 20,000 ppm.