| 摘要 |
PURPOSE:To obtain a toner for developing an electrostatic charge image with superior charge characteristics by adding N-vinylcarbazole and a charge controller to a binder resin. CONSTITUTION:A compound represented by formula I [where each of X and Y is H, halogen, -NO2, -N(CH3)3<+>, -CN, -COOH, -SO3H, -CHO or -COOR (R is alkyl, aryl, alkenyl or aralkyl)], e.g., N-vinylcarbazole represented by formula II is used as a charge controller. About 1-20pts.wt. coloring agent such as carbon black and about 0.1-15pts.wt. said compound as a charge controller are added to 100pts.wt. binder resin such as a styrene-butyl acrylate copolymer having about 80-180 deg.C softening point or a mixture of the copolymer with an olefin polymer having about 100-180 deg.C softening point. They are melted and kneaded, and the kneaded material is cooled, pulverized, and classified to obtain a toner. |
