End cover, process cartridge and assembling method for process cartridge

摘要

An end cover for a process cartridge detachably mountable to an electrophotographic image forming apparatus for forming an image on a recording material, includes a base; a gear train including a plurality of gears mounted on the base; a first opening, provided in the base so as to be opposed to a gear of the gear train, for permitting the gear of the gear train to be rotated externally when the end cover is mounted to a cartridge frame in assembling of the process cartridge; a second opening, provided opposed to the cartridge gear, for permitting observation of rotation of the cartridge gear provided in the cartridge frame which cartridge gear receives driving force through the gear train when the gear opposed to the first opening is rotated.