JPS55147626A - Developing method of two component system diazo photosensitive paper - Google Patents

Abstract

PURPOSE: To prevent the generation of water drops in a developing chamber and the leakage of smell to the outside by setting the preheating temp. in the developing chamber in correspondence to the liquid temp. in a developing gas producing vessel and operating the heater in the vessel upon reaching the preheating temp.

CONSTITUTION: The liquid temp. in a developing gas producing vessel 1 is detected 7 and the preheating temp. in the developing chamber 4 corresonding to the liquid temp. is beforehand set. The attainment of the set temp. in the chamber 4 by the heater 5 is detected 9 and the heater 2 in the vessel 2 is operated. In this way, the developing soln. supplied from a developing soln. tank 6 into the vessel 1 through a rectifying tower 3 is evaporated and the developing gas thus produced is detected 8 of its temp. at the outlet of the tower 3 and when the inside of the developing chamber 4 attains the specified developing temp. from the preheating temp., it is admitted into the chamber 5. Thus, the introduction of the developing gas (NH₃ and steam) into the chamber 4 at the temp. higher than the temp. therein does not occur, hence the generation of water drops in the developing chamber and the penetration of NH₃ thereinto and its leakage to the outside do not occur. The good development is thus accomplished.

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