A web of spliced-together exposed photographic films is introduced into a developing machine at a variable speed. In order to ensure that each increment of the web is treated in the developing tank of the developing machine for an optimum interval of time, the speed of web advancing rolls at the inlet...http://www.google.ca/patents/US4967222?utm_source=gb-gplus-sharePatent US4967222 - Method of and machines for treating webs of photographic material
