Developer unit for diazo copier - has application and transfer rollers with respective metallic and rubber surfaces

摘要

A developer unit for a diazo copying machine consists of liq. developer application roller and transfer rollers. The transfer roller is pressed against the application roller. It also has a pressure element which presses a diazo photosensitive sheet against the transmission roller. The application roller (8) is made from a metal with a given surface roughness. The transfer roller (9) is of rubber and has a different surface roughness.