Process cartridge and image forming apparatus

An image forming apparatus comprising:

• a main assembly of the image forming apparatus;
• a cartridge detachably mountable to said main assembly, said cartridge including:
• a cylindrical member;
• a cylindrical member driving force receiving portion for receiving a driving force, from said main assembly, for driving said cylindrical member;
• a memory for communication with a controller provided in said main assembly;
• a first electrical contact for supplying a voltage for image formation;
• a second electrical contact for supplying a voltage for image formation;
• a third electrical contact electrically connected with said memory;
• and
• a housing member housing said cylindrical member,
• wherein all of said first electrical contact, said second electrical contact, and said third electrical contact are provided on said housing member,
• wherein said cylindrical member driving force receiving portion is disposed on one side of said cartridge, said first electrical contact is disposed on the other side of said cartridge with respect to the longitudinal direction of said cartridge, and said second electrical contact and third electrical contact are disposed at a position closer to said first electrical contact than said cylindrical member driving force receiving portion in the longitudinal direction, and
• wherein said first electrical contact and said second electrical contact are provided on the same side surface of said housing member, and said third electrical contact is provided on another side surface,
• said main assembly including:
• a controller;
• and
• a fourth electrical contact connecting with said first electrical contact;
• a fifth electrical contact connecting with said second electrical contact;
• and
• a sixth electrical contact connecting with said third electrical contact to provide for communication with said memory.