POLYESTER RESIN AND TONER INCLUDING THE SAME

摘要

An environmentally favorable polyester resin for toner, which has superior fixing property, storage stability, and image density in an electrophotographic image forming process is disclosed. The polyester resin is produced by carrying out esterification reaction and polycondensation reaction of reactant comprising branched aliphatic epoxy compound, aromatic dibasic acid, and aliphatic diol. The branched aliphatic epoxy compound has 1 to 5 of epoxy group(s), and is formed by the glycidylation of polyhydric alcohol. The amount of the branched aliphatic epoxy compound is 2 to l5 mol %, the amount of the aliphatic diol is 55 to 98 mol % with respect to the total alcohol components, and the amount of the aromatic dibasic acid is 60 to 100 mol % with respect to the total acid components.