County Blue Reprographics has the capacity to quickly handle the biggest blueline job you can throw at us. Diazo reproductions are made when a translucent original is place in contact with a sheet of material that has been sensitized to ultraviolet light. The original and copy media are exposed to a powerful ultraviolet source. The copy media is then separated from the original and run through an environmentally safe developer. Areas sheilded from the UV light by lines on the original are dark while exposed areas are very light. SPEED - We have 4 diazo machines that can each produce 300 'D' (24x36) size reproductions per hour. OUTPUT SIZES - Standard media sizes are available up to 30x42. Larger sizes up to 48 wide are available, please call for more information ACCEPTABLE ORIGINALS - Diazo reproductions can be made from any translucent or transparent (vellum, mylar, acetate, tracing paper) original. The darker the lines and text the better the duplicate. STANDARD MEDIA - Standard diazo medias we stock include Blueline, Brownline, Blackline papers and Sepia Paper and Mylar. Washoff and Fixed Autopositive Mylars are available from the Stat Department