whiteprint(redirected from Diazo copy)
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Related to Diazo copy: Diazo copier
A print made by a plan copying process, produced on diazo paper or film, the emulsion containing a diazonium compound and a coupling or activating component; the process is based on sensitivity to ultraviolet light; development is by ammonia vapors, anhydrous ammonia gas, an alkaline solution which includes the coupler, or heat.
A reproduction of a construction drawing in which black lines appear on a white background. Compare with blueprint.