Abstract: A photographic sheet material processing apparatus comprises a pair of processing rollers, means for feeding sheet material to be processed between the processing rollers. Processing liquid distribution means supply processing liquid to the rollers. The processing liquid distribution means comprise an open-topped distributor channel positioned adjacent the processing rollers, and means for feeding processing liquid to the distributor channel along the length thereof. The distributor channel is formed with a plurality of apertures through which processing liquid passes to the rollers. Overflow means associated with the distributor channel maintain a constant liquid head therein.

Abstract: An apparatus for processing photographic sheet material comprises a housing, a first roller shaft supported within the housing and first and second processing rollers rotatable on respective roller shafts supported within the housing. The second processing roller lies substantially parallel to the first, and in line contact therewith. Biasing means bias the roller shafts towards each other. Means are provided for feeding photographic sheet material between the rollers. Each of the rollers has a radially outer zone formed of deformable material and has a radial dimension profile which varies along the length thereof. Such a roller construction enables the bleeding of images on aluminium lithographic printing plates processed by the apparatus to be reduced.