| 摘要 |
The present invention relates to, a thermally developable photosensitive material containing a non-photosensitive organic silver salt, photosensitive silver halide and a reducing agent on at least one surface of a transparent substrate, wherein a fog density value immediately after thermal developing treatment is 0.20 or less, a value of b0* in the following equation (1) at a fog density portion satisfies -20<=B0* <-4, and a change in an image tone from immediately after thermal developing treatment to after a point when an amount of time has passed as a value of a color difference DeltaE as defined in the equation (1) is any one of (a) 1.2 or less at 9 months under an environment of 30° C. and 60% RH, (b) 1.2 or less at 3 months under an environment of 40° C. and 40% RH, or (c) 0.9 or less at 1 week under an environment of 45° C. and 40% RH. DeltaE=[(L1*-L0*)<2>+(a1*-a0*)<2>+b1*-b0*]<2>]<1/2 > Equation (1)
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