(2) To flash the film, run only the diazo foil quickly through the exposure light. Varying the
exposure time results in different color densities. After flashing, expose and develop your film in the
e. Diazo Intermediates. Diazo intermediates are important for duplicating art work. You may
require duplicate VGTs to distribute to or exchange with other commands. Never send out your original
art work. Duplicate your work on diazo intermediate sheets; sepia (KSP), sepia matte (KSPM), orange
sepia (501LC), or sepia (K-MAX).
(1) To make sepia intermediates, expose and develop the sepia film as you would any other
diazo film. Make sure the sepia image develops completely and is as dense as possible.
(2) One advantage of sepia intermediates is that you can make corrections on the film itself.
Gently scrape away errors with a rounded knife. Make additions or corrections with a pen and ink.
To reproduce your graphics on diazo material, you must be able to properly operate the diazo processing
machine. The procedures listed below demonstrate the proper operation of an Ozalid diazo processing
These procedures are for training purposes only. To operate your unit's equipment, always
refer to local instructions and standing operating procedures (SOPs). Any diazo process
machine may be used following the manufacturer's instructions and local procedures.
Use this machine in a well-ventilated area. Follow unit SOPs for
handling hazardous chemicals.
a. Filling the Ammonia Storage Tank. To fill the ammonia storage tank, insert the drain tube
into the residue bottle and turn the ON-OFF toggle switch to ON. If bubbles appear in the ammonia
during operation, the temperature of the chemical is too warm. You correct this problem by diluting the
ammonia solution with 1/8 to 1/2 cup of cold water.
(1) Adjust the ammonia system feed to a rate of 50 to 60 drops per minute.