| 摘要 |
PURPOSE:To increase reactivity with the oxidation product of a color developing agent by using a specified 1-naphthol coupler. CONSTITUTION:To a sensitive material is added a compound represented by general formulaI, wherein G is H or a blocking group which can be eliminated from the compound by hydrolysis or intramolecular nucleophilic substitution during development, R1 is a <=16C org. group having at least one of carboxy, sulfo and hydroxy, R2 is H or a water soluble acidic group, TIME is a timing group which is eliminated from the compound represented by the general formulaItogether with PUG when the compound reacts with the oxidation product of a color developing agent and can release PUG after the elimination, and PUG is a photographically useful group.
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