Diffusion transfer apparatus with a coacting belt transfer system

Claim 1

IN A DIFFUSION TRANSFER APPARATUS INCLUDING DRIVE MEANS AND A NORMALLY DISENGAGED CLUTCH, THE COMBINATION COMPRISING: (A) CONVEYOR MEANS MOVED BY SAID DRIVE MEANS UPON ENGAGEMENT OF SAID CLUTCH, FOR SUPPORTING AND MOVING (1) A NEGATIVE SHEET HAVING A PHOTOSENSITIVE SURFACE AND (2) A RECEIVER SHEET HAVING AN IMAGE RECEPTIVE SURFACE, FROM A RECEPTION STATION TO A STRIPPING STATION, (B) MEANS MOUNTED ON AND MOVABLE WITH SAID CONVEYOR MEANS FOR RECEIVING AT SAID RECEPTION STATION ONE OF THE ENDS OF EACH OF SAID SHEETS WITH THE PHOTOSENSITIVE AND IMAGE RECEPTIVE SURFACES THEREOF FACING EACH OTHER, (C) TIMER MEANS ADAPTED TO BE PRESET FOR ESTABLISHING A PREDETERMINED INTERVAL OF TIME FOR IMAGE TRANSFER FROM SAID NEGATIVE SHEET TO SAID RECEIVER SHEET AND, FOR ENGAGING SAID CLUTCH AT THE EXPIRATION OF SAID PREDETERMINED INTERVAL OF TIME, AND (D) TRANSFER CONTROL MEANS OPERABLE IN RESPONSE TO MOVEMENT OF SAID RECEIVING MEANS, TO A POSITION BETWEEN SAID RECEPTION STATION AND SAID STRIPPING STATION, FOR DISENGAGING SAID CLUTCH AND FOR INITIATING OPERATION OF SAID TIMER MEANS.