PHOTOGRAPHIC FILM CASSETTE COMPRISING INTERNALLY PROGRAMMED SELF-CONTAINED FILM PROCESSING SYSTEM

摘要

A photographic film cassette comprising externally powered film takeup and supply reels. A strip of initially unexposed film is stored on the supply reel and passes to the takeup reel by way of a film gate, for exposure of the film, under camera control. The cassette includes a housing enclosing the supply and takeup reels and a processing system including a supply of film composition for processing the film after its exposure. The processing system responds to the position and direction of motion of the film to process it during its first rewind onto the supply spool, in an operating sequence determined by elements within the cassette housing that cause the processor to engage the film, release the processing composition, coat the film, and then disengage the processor.