Patent ID: 7242874

Claim:
An image forming apparatus, comprising: a recording medium accommodating portion that is capable of accommodating a recording medium; a feed path along which the recording medium is capable of being fed from the recording medium accommodating portion; and a detector, disposed on the feed path, capable of detecting (1) a cartridge that is capable of being installed in the image forming apparatus when the cartridge is installed in the image forming apparatus and (2) the recording medium when the recording medium passes through the feed path when the cartridge is installed in the image forming apparatus, wherein a first movement member, disposed on the feed path, that is capable of moving to a first position when the cartridge is installed in the image forming apparatus and is capable of moving to a second position different from the first position when the recording medium passes through the feed path; a first sensor that detects the first movement member at one of the first position or the second position; the cartridge, that is capable of being installed in the image forming apparatus, includes a first cartridge having at least a photosensitive member and a second cartridge having at least a developer accommodating portion that is capable of accommodating a developer, the second cartridge being positioned by the first cartridge; and the first movement member contacts the second cartridge when the second cartridge is installed in the image forming apparatus.