Patent ID: 9335646
Filing Date: 2016-05-10
CPC Classification: B05D,G03G

Claim Text:
1. An electrophotographic photosensitive member, comprising: a support; an undercoat layer formed on the support; and a photosensitive layer formed on the undercoat layer, wherein the undercoat layer comprises: when a ratio of the mass of the compound represented by the formula (2) relative to the mass of the zinc oxide particles is A mass %, and a specific surface area of the zinc oxide particles is B m the amount of surface treatment which is defined as A/B satisfies the following formula (1), and the value of B is from 14 to 25, wherein, in the formula (2), R R R R wherein, in the formulas (R4-1), (R4-2) and (R4-3), m is an integer number selected from 1 to 3, and R