Patent ID: 9651880
Date: 2017-05-16
CPC Classifications: G03G

Claim:
1. An electrophotographic photoreceptor comprising: a conductive substrate; an undercoat layer provided on the conductive substrate and including metal oxide particles; and a photosensitive layer provided on the undercoat layer, wherein, at the time of performing Cole-Cole plot analysis with respect to the undercoat layer, an angular frequency ωmax, at which a maximum complex impedance component is obtained, falls within a range of 4 (rad)≦ωmax≦7.5 (rad), wherein the metal oxide particles are zinc oxide particles consisting of two portions, a first portion of the zinc oxide particles having a first diameter, and a second portion of the zinc oxide particles having a second diameter larger than that of the first diameter, and wherein a weight ratio r (%) of the first portion of zinc oxide particles in the undercoat layer is from 49% to 78% by weight with respect to the zinc oxide particles.