Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Polyester resin for full color toner
 A polyester resin for a full color toner which comprises a) from 0.5 to 5% by mole, based on all the acid components, of a tribasic or higher carboxylic acid component and/or a trihydric or higher alcohol component, b) at least 95% by mole, based on all the acid components, of a dibasic carboxylic acid component, c) from 10 to 80% by mole, based on all the acid components, of an aromatic diol component consisting of or containing a bisphenol A derivative having ethylene oxide added thereto, and d) from 20 to 110% by mole, based on all the acid components, of an aliphatic diol component; and has a softening temperature of 95 to 115.degree. C., a glass transition temperature of 50 to 70.degree. C., an acid value of 6 to 20 mgKOH/g, a melt viscosity at 118.degree. C. of 1000 to 52,000 poises, a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) of 1.5 to 5 in the molecular weight distribution determined by gel permeation chromatography, a peak TOP molecular weight of 20,000 or less and a gel fraction of 0.5% by weight or less. 
Mitsubishi Rayon Company Ltd.
G C C
G03G C08G C08G
inventional inventional inventional
Hirokazu Hitoshi Noriyuki
Ito Iwasaki Tajiri