Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

摘要

Provided are an electrophotographic photosensitive member in which a residual potential hardly increases at the time of image formation, a pattern memory hardly occurs, and the crack of a conductive layer hardly occurs, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. To this end, the conductive layer of the electrophotographic photosensitive member contains a titanium oxide particle coated with tin oxide doped with phosphorus, a tin oxide particle doped with phosphorus, and a binding material, and when a total volume of the conductive layer is represented by VT, a total volume of the titanium oxide particle coated with tin oxide doped with phosphorus in the conductive layer is represented by V1P, and a total volume of the tin oxide particle doped with phosphorus in the conductive layer is represented by V2P, the VT, the V1P, and the V2P satisfy the following expressions: 2≦{(V2P/VT)/(V1P/VT)}×100≦25 and 15≦{(V1P/VT)+(V2P/VT)}×100≦45.

主权项

1. An electrophotographic photosensitive member, comprising:
a support; a conductive layer formed on the support; and a photosensitive layer formed on the conductive layer, wherein: the conductive layer comprises: a titanium oxide particle coated with tin oxide doped with phosphorus, a tin oxide particle doped with phosphorus, and a binding material; and when a total volume of the conductive layer is represented by VT, a total volume of the titanium oxide particle coated with tin oxide doped with phosphorus in the conductive layer is represented by V1P, and a total volume of the tin oxide particle doped with phosphorus in the conductive layer is represented by V2P, the VT, the V1P, and the V2P satisfy the following expressions (1) and (2)
2≦{(V2P/VT)/(V1P/VT)}×100≦25  (1)15≦{(V1P/VT)+(V2P/VT)}×100≦45  (2).