| 摘要 |
<p>PURPOSE:To improve the resistance of a toner to a shock received from an electric charge imparting member such as a carrier in a developing machine, to make it possible to use a low mol.wt. bonding resin which cannot be used so far in a developer and to obtain a toner fixable at a low temp. and excellent in shock resistance and aging stability. CONSTITUTION:This electrophotographic resin compsn. contains resin particles obtd. by coating core layers of an acrylic ester copolymer and/or a methacrylic ester copolymer having <=0 deg.C glass transition temp. with a crosslinked vinyl polymer having >=50 deg.C glass transition temp. in polystyrene or styrene copolymer resin.</p> |
