COATING LIQUID FOR UNDERCOATING LAYER FORMATION, PROCESS FOR PRODUCING COATING LIQUID FOR UNDERCOATING LAYER FORMATION, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, APPARATUS FOR IMAGE FORMATION, AND ELECTROPHOTOGRAPHIC CARTRIDGE

摘要

This invention provides a highly stable coating liquid for undercoating layer formation for an electrophotographic photoreceptor. The coating liquid contains metal oxide particles and a binder resin. The metal oxide particles in the coating liquid for undercoating layer formation satisfy the requirements that the volume cumulative average diameter D50 as measured by a dynamic light scattering method is not more than 0.1 mum and the volume particle size distribution width index SD satisfies the following formula (1): 0.010 <= SD <= 0.040 (1) wherein SD = (D84-D16)/2; D84 represents a particle diameter (mum) at a point where the volume particle size distribution cumulative curve is 84%; and D16 represents a particle diameter (mum) at a point where the volume particle size distribution cumulative curve is 16%. ® KIPO & WIPO 2009