The base material can be opaque paper, transparentized vellum or transparent film. The combinations of the different base materials and colors allow a wide variety of appearances of the finished copies. Differences in exposure time are achieved by adjusting the speed of passage around the lamps. Diazo copying has reached a highly refined state of functionality. The diazo development process involves the release of ammonia, moisture and heat energy only.
Ammonia is a completely natural substance.
Diazo papers are recyclable and the diazo process creates no ozone or health concerns. There are also advantages regarding low equipment investment, long machine life and ease of maintenance. Famaco S.A. de C.V., M xico.