| 摘要 |
A method for increasing color-fastness of organic coloring matters against light is disclosed. the colorfastness of the organic coloring matter of which absoption maximum is the region from 400nm to 700nm is increased by coexisting with a metal complex represented by the following general formula: in which R,, R2, Rl' and R2' are a hydrogen atom or a substituent, X and X' are O or S, Y is O, S, SO or SO2 and M is a metal atom. The method adapts to improve the fastness of color images of silver halide photographic materials. In this case, the organic coloring matter is a dyestuff formed by coupling a color forming coupler with an oxidation product of a color developing agent in the silver halide color photographic material or a dyestuff diffused to a recieving layer of the diffusion transfer silver halide color photographic material. |
