| abstract |
PURPOSE: To give the image having a high density and a low fog by raising pH of a reaction system by the reaction of a metallic compd. difficult to soluble to water and a compd. capable of forming a complex salt in the presence of water. n CONSTITUTION: Generally, the pH of said reaction system preferably raises in the developing of a photosensitive material. In the titled method, the metallic ion composed of said metallic compd. and a compd. (complex salt forming compd.) contg. an org. base capable of effecting the complex salt forming reaction in the presence of an aqueous medium are incorporated in the image forming reaction of both said compds. in the presence of the aqueous medium. As the metallic compd. difficult to soluble to water, the double salt of the compd. such as a carbonate, etc., which has ≤0.5 solubility against water at 20°C is examplified. And, the complex salt forming compd. to be used has the org. base, and forms the complex salt having a stability factor coefficient of ≥1 log K by reacting with a metallic ion composed of said metallic compd. difficult to soluble to water. n COPYRIGHT: (C)1987,JPO&Japio |