| 摘要 |
PURPOSE:To obtain the titled material having improved light fastness, white group and color reproducibility by incorporating a specific coupler and/or a polymer coupler derivated from said coupler, a specific metal complex and an oil soluble dyestuff to the titled material. CONSTITUTION:The titled coupler contains at least one kind of coupler selected from the couplers shown by formulas I-III and/or the polymer coupler derivated from said coupler, one of the metal complex having >=3X10<7>M<-1>, sec<-1> quenching rate constant of a singlet oxygen and one of the oil soluble dyestuff. In formula I-III, Za-Zc are each a non-metallic atom group necessary for forming a nitrogen contg. heterocyclic ring, Xa-Xc are each hydrogen atom or a group capable of releasing by reacting with the oxidant of a color developing agent, Ra-Rg are each hydrogen or a substituent, Y1 and Y2 are each carbon atom, etc. Thus, the titled material having high light fastness of the coloring image, and less tendency for the deterioration of the white ground due to the coloring of the white ground part, and the color reproducibility by making the color tone to the long wave, and having good white ground and color reproducibility is obtd. |
