Abstract: Film processor having a lighttight chamber defined in part by a door, a station at which a processing kit containing therein a rupturable container of processing liquid may be located, a rack movable from a first position toward a second position during which it opens the kit and also latches the door in a closed position, and a manually operable lever for moving the rack between said positions. Movement of the lever toward a processing position is transmitted to the rack and to a processing container rupturing member so as to cause the rack to open the processing kit prior to movement of the rupturing member into rupturable engagement with the container as the rack moves into the second position. Also, during such movement of the rack, the door is latched in the closed position, thus preserving the lighttightness of the chamber during processing of a length of film.