| 摘要 |
PURPOSE:To enhance electrostatic characteristics and humidity resistance by incorporating at least one kind of each of 2 kinds of specified resins in a binder resin. CONSTITUTION:The binder resin is composed of at least one kind of each of the resin A having an average molecular weight of 1X10<3>-1X10<4> and a glass transition point of -10-100 deg.C, preferably, -5-80 deg.C, and an acid groups selected from -PO3H, -SO3H, and COOH in an amount of 0.1-20wt.% of the resin A, and the resin B having a weight average molecular weight of >= 5X10<4> and a glass transition point of 0-120 deg.C, preferably, 10-90 deg.C and a cross-linking structure but no acid group, thus permitting electrostatic characteristics, especially, dark potential stability and photosensitivity to be enhanced, and a copy image high in fidelity to an original to be reproduced. |
