apparatus for safely transporting a sheet of photographic material through a development or other processing station comprises means for concurrently circulating processing liquid in the form of a plurality of streams both downward onto the sheet and upward from an underlying plate , the latter streams supporting the sheet and providing for the formation of a liquid layer between the plate and the sheet which facilitates the unrestricted passage of the sheet along the processing path . the downwardly projected streams are angled in the direction of sheet travel to provide further impetus to the movement of the sheet .