| 摘要 |
PURPOSE:To form a cyan color image which does not cause a hue change due to heat, humidity and light by using a specified compd. for the titled coupler of forming a cyan dye. CONSTITUTION:The compd. shown by formula I is used for the titled coupler. In the formula, Z is a nonmetal atomic group necessary for forming a nitrogen contg. heterocyclic six membered ring by condensating with a pyrazole ring, R is hydrogen atom. or a substituting group, X is hydrogen atom. or a substituting group capable of releasing by reacting with the oxidant of a color developing main agent. Thus, the titled coupler which does not cause the hue change due to the heat, the humidity and the light, and forms the cyan color matter image, is obtd. |
