Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus

摘要

An electrophotographic photosensitive member has an undercoat layer containing a polymerized product of a composition including electron transporting substance having a polymerizable functional group and a crosslinking agent, and resin particles. The content of the electron transporting substance is 30% by mass or more and 70% by mass or less based on the total mass of the composition. Protrusions derived from the resin particles in the undercoat layer are formed at an interface between the undercoat layer and the charge generating layer.

主权项

1. An electrophotographic photosensitive member comprising:
a support; an undercoat layer formed on the support, the undercoat layer having a surface roughness of 0.5 to 2.5 μm in terms of ten-point average roughness Rzjis measured at a reference length of 0.8 mm, and comprising resin particles and a polymerized product of a composition comprising a crosslinking agent and an electron transporting substance having a polymerizable functional group; a charge generating layer formed directly on the undercoat layer; and a hole transporting layer formed on the charge generating layer, wherein the content of the electron transporting substance is 30% by mass or more and 70% by mass or less based on the total mass of the composition, the resin particles comprise 5 to 20% by mass based on the total mass of the composition, and a plurality of protrusions derived from the resin particles in the undercoat layer is formed at an interface between the undercoat layer and the charge generating layer.