The image forming apparatus includes a supply device which supplies a recording material, a cartridge including a photosensitive member and image forming apparatus and detachably mounted on a main body of the apparatus, the cartridge being capable of forming an unfixed image on the recording material supplied and conveyed by the supply device, a fixing device which fixes the unfixed image onto the recording material, and an air blowing device which is provided between the supply device and the cartridge and which blows air toward the cartridge, and the supply device, the cartridge and the fixing device are positioned from below to above in this order. Thus the influence of heat from the fixing device to the cartridge can be reduced.