Method for developing diazo prints from an external supply source of ammonia and carbon dioxide

Claim 1

IN A METHOD FOR DEVELOPING TWO-COMPONENT TYPE DIAZODYE COATED SHEETS POSITIONED IN A DEVELOPMENT CHAMBER BY CONTACTING THE SHEETS WITH AMMONIA VAPOR IN THE PRESENCE OF WATER VAPOR, THE IMPROVEMENT WHICH COMPRISES CONDUCTING INTO SAID CHAMBER, THROUGH A CONDUIT, A FLOW OF A MIXTURE OF AMMONIA VAPORS, CARBON DIOXIDE VAPOR AND WATER VAPOR, SAID MIXTURE OF VAPORS BEING WITHDRAW FROM AN AQUEOUS SOLUTION OF AMMONIA AND CARBON DIOXIDE IN A CONTAINER LOCATED EXTERIORLY OF SAID CHAMBER AND CONNECTED TO SAID CHAMBER BY SAID CONDUIT BY PASSING GASES EXHAUSTED FROM THE CHAMBER THROUGH THE SOLUTION, THE CONCENTRATION OF THE CARBON DIOXIDE AND THE AMMONIA IN SAID SOLUTION BEING SUCH THAT TECARBON DIOXIDETO-AMMONIA RATIO, IN TERMS OF PARTS BY WEIGHT THEREOF IN SAID SOLUTION, IS FROM ABOUT 1:1 TO 1:20 AND HE CONCENRATION OF THE AMMONIA IS AT LEAST ABOUT 1 POUND PER GALLON OF SOLUTION.