| 摘要 |
PURPOSE:To prevent the generation of the Y-stain in the non-developed part due to the light, a heat and a humidity by incorporating the specific Magenta coloring matter forming coupler and the specific compd. to the material. CONSTITUTION:The titled material comprises the Magenta color image forming coupler shown by formula I and the compd. shown by formula II. In the formula I, Z is non-metallic atoms necessary to form the nitrogen contg. heterocyclic ring, X is a hydrogen atom or a substituent capable of releasing by the reaction with the oxidant of the color developing agent, R is a hydrogen atom or a substituent. In formula II, R<1> is an aliphatic group, a cycloalkyl or an aryl group Y is a non-metallic atoms necessary to forming 5-7 membered heterocyclic ring together with a nitrogen atom. The Magenta coloring matter image stabilizer which is shown by formula I and is used together with the Magenta coupler has the effects of the anti-decoloration and the anti- discoloration due to the light. The compd. shown by formula II displays the function of the Magenta coloring matter image stabilizer by constituting the heterocyclic ring contd. in the compd. shown by formula II from more than two heteroatoms which are not adjacent each other. By applying the titled material, the decoloration and the discoloration and the generation of the Y-stain in the non-colored part due to the light, the humidity and the heat of the titled material are prevented. |
