Hinged photographic film unit containing a liquid

Claim 1

A PHOTOGRAPHIC PRODUCT CONTANING MATERIAL, INCLUDING A PHOTOGRAPHIC REAGENT, FOR PRODUCING A TRANSFORMATION OF AN IMAGE IN SAID PRODUCT, SAID REAGENT BEING PRESENT IN AN AMOUNT SUFFICIENT TO EFFECT SAID TRANSFORMATION, SAID PRODUCT COMPRISING A LIQUID-CONFINING LAYER, INCLUDING AT LEAST A PHOTOGRAPHIC PHOTOSENSITIVE PORTION CAPABLE OF HAVING AN IMAGE FORMED THEREIN UPON PHOTOEXPOSURE, ANOTHER LIQUID-CONFINING LAYER, AN OPAQUE STRATUM ASSOCIATED WITH EACH OF SAID LIQUID-CONFINING LAYERS, AND A RUPTURABLE CONTAINER HOLDING A VISCOUS LIQUID, SAID LIQUID BEING IN AN AMOUNT SUFFICIENT FOR TRANSFORMING SAID IMAGE IN SAID PHOTOSENSITIVE PORTION, SAID LIQUID, UPON PERMEATION OF SAID PHOTOSENSITVE PORTION, RENDERING SAID TRANSFORMING MATERIAL EFFECTIVE TO TRANSFORM SAID IMAGE, SAID LAYERS AND CONTAINER BEING ATTACHED TOGETHER BY MEANS OF A HINGE, SAID LIQUID-CONFINING LAYERS BEING NORMALLY SUPERPOSED WITH SAID PHOTOSENSITIVE PORTION POSITIONED BETWEEN SAID OPAQUE STRATA SO AS TO EXCLUDE ACTINIC LIGHT FROM SAID PHOTOSENSITIVE PORTION, SAID HINGE PERMITTING SAID LAYERS TO BE SEPARATED SO AS TO ALLOW EXPOSURE OF SAID PHOTOSENSITIVE PORTION AND THEN PERMITTING SAID LAYERS TO BE SUPERPOSED AGAIN, WITH SAID LIQUID BEING HELD UP SAID CONTAINER SO AS NOT TO WET SAID LAYERS AND WITH SAID CONTAINER BEING POSITIONED FOR RELEASING SAID LIQUID BETWEEN SAID LAYERS, SAID PHOTOSENSITIVE PORTION COMPRISING A SINGLE FRAME FOR PRODUCING A SINGLE PHOTOGRAPHIC IMAGE, SAID HINGE BEING POSITIONED ADJACENT A MARGINAL EDGE OF THE FRAME, SAID CONTAINER BEING ALSO POSITINED ADJACENT A MARGINAL EDGE OF SAID FRAME SO THAT LIQUID RELEASED FROM SAID CONTAINER MAY BE SPREAD BETWEEN SAID LAYERS ACROSS SAID FRAME, SAID LIQUID BEING SUFFICIENTLY ADHESIVE TO MAINTAIN SAID TWO LAYER IN LIGHT-EXCLUDING RELATIONSHIP TO SAID PHOTOSENSITIVE PORTION WHEN SAID LIQUID IS SPREAD BETWEEN SAID LAYERS.