Diazo development unit based on half-damp process - has roller dipping into developer and ribbed surfaces on regulator blade and roller to control development

摘要

Diazo development appts. uses a damp roller technique. The diazo material is developed in a development zone between the developer-carrying roller (5) and a pressure roller (4). The amount of developer carried by the roller (5) is determined by the ribbed pattern on the surface of the roller and the lattice pattern (at 15) on the regulator blade (12) which presses on the development roller (5) in advance of the development zone. The depths of ribs, lattice patterns and pressure of blades and rollers have specified measurements.