| 摘要 |
PURPOSE:To obtain the title material having the excellent green shelf-life and an image having the high image density and a less tendency for generating a stain by incorporating at least one of a photosensitive silver halide and a reducing agent and at least one of specified compds. in a supporting body. CONSTITUTION:At least one of the photosensitive silver halide and the reducing agent and at least one of the compds. shown by formula I-IV are incorporated in the supporting body. In formulas I-IV, when n=1, Z is hydrogen atom, alkyl or -COY group (wherein Y is alkyl or aryl group, etc.), and when n=2, Z is Zn or Ni, R<1>-R<5> are each hydrogen atom, a substituting group or a chemical bond, X is oxygen or sulfur atom, etc., R<6>-R<9> are each hydrogen atom, a substituting group or a chemical bond. And, when n=1, W is hydrogen atom, ammonium, -SR<11> or R<11> group, and when n=2, W is Zn or Ni, R<10> and R<11> are each alkyl or heterocyclic ring residual group, etc., R<15> and R<16> are each alkyl or cycloalkyl group, etc. Thus, the image having a less tendency for generating the stain of a color image and a good S/N is obtd. |
