| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat developable photosensitive material having low fog, high sensitivity, high contrast, high blackening density (Dmax) and low Dmin in a UV region and less liable to a change in sensitivity and fog in preservation by forming an image forming layer containing photosensitive silver halide having a specified silver chloride content on a substrate and incorporating a specified compound on the side of the substrate with the image forming layer. SOLUTION: The heat developable photosensitive material has an image forming layer containing photosensitive silver halide having >=60 mol% silver chloride content on the substrate and contains at least one compound selected from substituted alkene derivatives of formula I, substituted isoxazole derivatives of formula II or acetal compounds of formula III on the side of the substrate with the image forming layer. In the formula I, R1-R3 are each H or a substituent and Z is an electron withdrawing group or silyl. In the formula II, R4 is a substituent. In the formula III, X and Y are each H or a substituent and A and B are each alkoxy, alkylthio, alkylamino or the like.
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