A cartridge includes a drum flange provided at one end portion of a photosensitive drum. A coupling member is operatively connected to the drum flange, with the coupling member being configured to transmit the driving force to the drum flange. The drum flange has an opening at one end and is closed at another end, and the opening leads to a hollow interior portion. An end portion of a coil spring contacts an interior surface of the closed end of the drum flange, and the drum flange includes a housing and a cover member attached to the housing, with the closed end of the drum flange being a part of the cover member.