| abstract |
The present invention relates to an ingot for impact pressing, a method of manufacturing the ingot, a cylindrical metal member, a method of manufacturing the cylindrical metal member, a conductive substrate for an electrophotographic photoreceptor, the electrophotographic photoreceptor, a process cartridge, and an image forming apparatus. The metal ingot for impact pressing includes a contact surface of the metal ingot contacting a male die in impact pressing, the contact surface having a maximum height roughness Rz of 20 to 50 μm and an average length RSm of roughness curve elements of 150 to 400 μm, the male die being used in combination with the female die in impact pressing. |