Development of Overcoating Layer for Multiple-layerd Positive Charging Organic Photoconductor 1

— Study on Film Lifetime and Toner Filming —

Abstract

Development of the urethane/silicone overcoating layer (OCL) for multiple-layerd positive charging organic photoconductor has been carried out. Film life time of OCL increases exponentially with increasing film thickness. Wear behabior which is related to tonerfilming in practical PPC machine depend strongly on urethane/silicone ratio. It was noted that hardening of OCL and frictional coefficient between cleaning blade and OCL play important roles in tonerfilming.