Photographic processing tank

Claim 1

A processing tank for developing light sensitive photographic materials, comprising: a unitary body structure having an enclosed water cavity formed therein and defined by integral side, top and base walls; said top wall having upwardly open processing chemical receiving indentations formed integrally therein, each indentation defining an individual photographic material processing tray to receive a respective photographic chemical therein, each tray having upright peripheral walls extending into the cavity to a bottom wall spaced upwardly from the base wall of the body; the trays being spaced apart from one another, defining open channels about the periphery of the trays so that water within the cavity will surround each tray to maintain chemicals in the trays at the same temperature; the unitary body having integral structural gussets extending through open channels between the trays and the side walls of the body; the unitary body including an individual drain passageway for each tray extending outwardly through the upright peripheral walls of the trays, respective structural gussets and side walls of the body providing open fluid communication to individually drain the chemicals from the trays; valve means in the drain passageways for selectively opening the drain passageways to permit draining of fluid from the associated indentations; and the unitary body having inlet and discharge ports opening into the water cavity through a wall thereof adapted to receive and direct water into the cavity and to discharge water therefrom.