A photographic camera has a cartridge chamber in which is loaded a film cartridge having a roll film entirely rolled to its leading end around a spool in a cartridge body and a light-shielding shutter member for opening and shutting a film exit slit formed in the cartridge body, an entrance opening to...http://www.google.fr/patents/US5664248?utm_source=gb-gplus-shareBrevet US5664248 - Photographic camera
