| 摘要 |
<p>PURPOSE:To obtain a toner excellent in dot reproducibility, fixability and anti- offsetting property. CONSTITUTION:This toner contains a resin binder based on polyester resin (A) having 105-112 deg.C softening point and polyester resin (B) having 150-155 deg.C softening point and polyolefin with oxidized form added as a releasing agent by 1-6 pts.wt. per 100pts.wt. of the resin binder. In the resin binder, the weight ratio between the polyester resin A and the polyester resin B is (75:25) to (40:60), the polyester resin A is obtd. by polycondensing at least etherified diphenols and arom. dicarboxylic acid, its anhydride or its lower alkyl ester and the polyester resin B is obtd. by polycondensing etherified diphenols, arom. dicarboxylic acid, its anhydride or its lower lakyl ester and polycarboxylic acid other than dicarboxylic acid, its anhydride, its lower alkyl ester or polyol other than diol.</p> |
