Processing arrangement for photosensitive articles including a heater and a fluid control device

摘要

An arrangement for developing film has a developing chamber which is provided with an inlet and an outlet for the developer. The chamber is located above a first container having an open upper end and arranged to receive developer discharged through the outlet of the chamber. This container is located inside of or above a second container arranged to receive developer which overflows from the first container. The containers have respective outlets which merge into a single conduit leading to the developing chamber. A heating device surrounds the conduit or is accommodated in the first container and functions to heat the developer to a predetermined temperature required for development. A pump for circulating the developer is arranged in the conduit which leads to the developing chamber. The outlet of the second container is provided with a valve which is controlled by a thermal sensor. The total quantity of the developer greatly exceeds that which is actually required and the bulk of the developer is initially accommodated by the second container. Only sufficient developer to fill the developing chamber and to maintain circulation from the latter through the first container and the conduit back to the developing chamber is not received