| 摘要 |
PURPOSE:To improve the shelf stability of a color image by incorporating a magenta dye forming water soluble polymer coupler contg. repeating units derived from a specified monomer. CONSTITUTION:At least one kind of magenta dye forming water soluble polymer coupler contg. at least one group of repeating units derived from a monomer represented by formula I is incorporated. In the formula I, R1 is H, 1-4C alkyl or Cl, A is a bivalent combining group, X is a group which can be released by a coupling reaction with the oxidized product of an arom. prim. amine developing agent and Q is a residue of a coupler forming a magenta dye by coupling with the oxidized product of the developing agent. A concrete example of the monomer represented by the formula I is represented by formula I-1. The shelf stability of a color image can be improved. |
