Process for producing electrophotographic photosensitive member

摘要

To provide a process for producing an electrophotographic photosensitive member that can not easily cause any fog due to an increase in dark attenuation, a conductive layer is formed with use of a coating liquid for conductive layer prepared with use of a solvent, a binder material and metal oxide particles. The metal oxide particles (P) and binder material (B) in the coating liquid for conductive layer are in a mass ratio (P/B) of from 1.5/1.0 to 3.5/1.0. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus or tungsten. Where powder resistivity of the metal oxide particle is represented by x (Ω·cm) and powder resistivity of the titanium oxide particle as a core particle constituting the metal oxide particle is represented by y (Ω·cm), the y and the x satisfy the following relations (i) and (ii):
5.0×107≦y≦5.0×109  (i)1.0×102≦y/x≦1.0×106  (ii).

主权项

1. A process for producing an electrophotographic photosensitive member;
the process comprising: the step of forming a conductive layer, having a volume resistivity of from 1.0×108 Ω·cm or more to 5.0×1012 Ω·cm or less, on a support, and the step of forming a photosensitive layer on the conductive layer, wherein; the step of forming the conductive layer comprises: the step of preparing a coating liquid for the conductive layer by use of a solvent, a binder material and a metal oxide particle, and the step of forming the conductive layer by use of the coating liquid for the conductive layer; the metal oxide particle (P) and the binder material (B) in the coating liquid for the conductive layer are in a mass ratio (P/B) of from 1.5/1.0 to 3.5/1.0; the metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus or a titanium oxide particle coated with tin oxide doped with tungsten; and where powder resistivity of the metal oxide particle is represented by x (Ω·cm) and powder resistivity of the titanium oxide particle as a core particle constituting the metal oxide particle is represented by y (Ω·cm), the y and the x satisfy the following relations (i) and (ii):
5.0×107≦y≦5.0×109  (i)1.0×102≦y/x≦1.0×106  (ii).