Abstract
The electrophotographic properties of zinc oxide-resin dispersion layers by corona charging are investigated, especially concerned with zinc oxide content dependence of saturation surface potential, dark decay ratio, over charge ratio and quantity of fatigue by pre-illumination.
The saturated surface potential for zinc oxide-resin layers vary considerably depending on type of zinc oxide, type of resin binder, and especially on content of zinc oxide. In positive corona discharging, the aceptance of positive surface potential depend on type of resin binder and content of zinc oxide.
The dark decay ratio for zinc oxide-polyolefin resin layers intensely depend on content of zinc oxide, it abruptly decreases with increasing content of zinc oxide at 60%.
The phenomenon of over charge which the surface potential is decreasing slowly from maximum value of surface potential during corona discharging, is observed for all zinc oxideresin layers at a specified content of zinc oxide. The same minimum over charge ratio is observed at 99% of zinc oxide content for zinc oxide-silicone resin layers and at 95% of zinc oxide content for zinc oxide-polyolefin resin layers.
