An electrophotographic photosensitive member includes a conductive substrate, an intermediate layer provided on the conductive substrate, and a photosensitive layer provided on the intermediate layer. The intermediate layer contains a specific polyamide resin and specific inorganic particles. The specific inorganic particles each include a metal oxide particle and a surface treatment layer covering at least a part of the surface of the metal oxide particle. The surface treatment layers contain a component derived from an organic siloxane compound and at least one of aluminum oxide and silica. The specific polyamide resin includes a first repeating unit derived from an aliphatic dicarboxylic acid with a carbon number of at least 8 and no greater than 20 and a second repeating unit derived from a diamine compound with a cycloalkane structure.

An electrophotographic belt includes a base layer containing a binder resin and carbon black in the binder resin. The binder resin contains at least one resin selected from the group consisting of PEEK and PPS. A water content calculated by ((X2X1)/X2)100 is 0.6% where X1 is a mass of a specimen cut out of the base layer when in a nitrogen atmosphere a temperature of the specimen is increased from 30 C. to 100 C. at a rate of 20 C./min. and maintained at 100 C. for 30 min, and X2 is a mass of the specimen when in a nitrogen atmosphere the specimen is thereafter cooled from 100 C. to 30 C. at a rate of 20 C./min. and the specimen is left to stand in the air under an environment of a temperature of 23 C. and a relative humidity of 50% for 48 hours.