Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Toner resin and process for its production
 Toner resin consisting of a polymer which comprises (a) an aromatic vinyl unit, (b) an acrylic or methacrylic compound unit and (c) a polyfunctional compound unit, and which has a tetrahydrofuran insoluble content of 5-60%, a maximum peak molecular weight of no more than 20,000 in the molecular weight distribution of the tetrahydrofuran soluble portion as measured by gel permeation chromatography, and a weight average polymerization degree of no more than 180, as well as a process for its production. The resulting toner resin has an excellent fixing property, non-offsetting property, blocking resistance and image stability. 
Mitsubishi Rayon Company Ltd.
C G G G G
C08F G03G G03G G03G G03G
inventional inventional inventional inventional inventional
Hitoshi Hirokazu Noriyuki
Iwasaki Ito Tajiri