Electrophotographic photoreceptor, image forming method, image forming apparatus and process cartridge for the image forming apparatus

A photoreceptor comprising:

• an electroconductive substrate;
• and
• a photosensitive layer located overlying the electroconductive substrate,
• wherein an outermost layer of the photoreceptor comprises a binder resin, wherein the outermost layer is prepared by a method comprising:
• dissolving the binder resin in a solvent at a concentration of C % by weight;
• coating a coating liquid comprising the binder resin solution;
• and
• drying the coated liquid,
• wherein the binder resin solution satisfies the following relationship (1):
• 2≦(T0-T400)/C (1)
• wherein To represents a initial transmittance (%) at 400 nm of the binder resin solution;
• T400 represents a transmittance (%) at 400 nm of the binder resin solution which has been allowed to settle for 400 hours under conditions of 23° C. and 40% RH;
• and C represents the concentration of the binder resin solution.