| 摘要 |
A photosensitive image-forming element comprising on a support at least one photosensitive layer containing silver halide crystals internally doped in the center of the crystal volume with a transition metal complex while satisfying equation (I): 0<FORM<10+5(I) where and where d1 represents a spherical equivalent diameter (SED), expressed in mu m, corresponding with a central crystal part doped with the said transition metal complex, d expressed in mu m represents the SED of the whole crystalvolume, while Q represents the concentration of the transition metal complex, expressed in 10-9 mole per mole of silver halide and wherein the said transition metal complex has the following general formula (1): [MXnYmLq]r-(1) wherein: M represents a metal selected from the group consisting of an element from Group 5 up to Group 10 of the Periodic System of the Elements; X and Y, which are different from each other, each represents one of the elements from the group consisting of Cl, Br and I; L represents any anorganic or organic ligand but preferably a ligand selected from the group consisting of NO, NS, OH, H2O, CN, CO, CH3CN, CNS, NCS, NO2, F, SeCN, CNSe, TeCN, CNTe, OCN, CNO, N3 and COO; n and m each equals an integer having a value from 0 to 6 while n+m equals 4, 5 or 6; q equals 0, 1 or 2 while n+m+q=6 and r equals 1, 2, 3 or 4.
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