Patent ID: 6489074
Filing Date: 2002-12-03
Classification: G03G

Abstract:
A toner resin composition comprising:a vinyl copolymer prepared principally from a styrene monomer and a (meth)acrylic ester monomer and showing maximum peaks at least in the molecular weight range of 5,000-20,000 and in the molecular weight of not below 500,000 when its molecular weight distribution is determined by gel permeation chromatography; 2-10% by weight of Fischer-Tropsch wax which has a weight average molecular weight of 400-2,000 and a melt viscosity of 5-20 cps at 140Â° C., and shows a peak of endotherm accompanying fusion at a temperature of 70-130Â° C. when measured by a differential scanning calorimeter; and 0.5-5% by weight of styrenic block copolymer.