| 摘要 |
PURPOSE:To obtain the titled composition having improved stability and color developing property of a color developing solution, and capable of reducing an increase of fog in a continuous processing by incorporating a color developing agent of an aromatic primary amine and a specific compd. to the titled composition. CONSTITUTION:The titled composition contains the color developing agent of the aromatic primary amine and the compd. shown by formula I, wherein X is hydrogen atom or a group capable of hydrolyzing, Y and Z are independently hydrogen atom, a substd. or an unsubstd. alkyl group or a substd. or an unsubstd. aryl group, R1-R4 are each hydrogen atom, a substd. or an unsubstd. alkyl group or a substd. or an unsubstd. aryl group, R1 and R2, R2 and R3 and R4 together with each other may independently form a ring structure. Thus, the titled composition having the improved stability and color developing property of the color developing solution and capable of preventing the increase of for and change of gradient can be obtd. |
