To provide a heat developing photosensitive material in which decrease in the sensitivity and increase in the fog caused by high temperature storage are improved.
(i). In the heat developing photosensitive material having a photosensitive layer containing photosensitive silver halide particles on at least one surface of a supporting body, at least one layer of the photosensitive layer or nonphotosensitive layer contains organic silver salts, a reducing agent and a compound expressed by general formula (1). (ii). In general formula (1) described in (i), X and W are coupled with each other to form a cyclic structure. (iii). The material described in (i) or (ii) further contains a compound expressed by general formula (2). (iv). The material described in (i) to (iii) contains a hydrazine compound.
HANIYU TAKESHI
TAKAMUKAI YASUHIKO
