An electrode member used with a process cartridge, removably mountable to an image forming apparatus, including an electrophotographic photosensitive member, a developing sleeve for supplying magnetic toner to said electrophotographic photosensitive member to develop a latent image formed on said electrophotographic photosensitive member, and a magnet disposed within said developing sleeve, said electrode member being adapted to supply electricity from a main body of said image forming apparatus to said developing sleeve when said process cartridge is mounted to the main body of said image forming apparatus, said electrode member comprising:
- an extended portion for urging said magnet in a thrust direction thereof so as to position said magnet.