| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat developable material having good preservability as a coated bulky product and an enhanced silver tone. SOLUTION: The heat developable material has flaky silver salt of an organic acid, a reducing agent for silver ions and a binder on at least one side of the substrate and the NH4+ content of all layers on the same side as the side with a layer containing those is 0.06-3.4 mmol, preferably 0.55-2.8 mmol per 1 m2 substrate. The alkali metal ion content of all layers on the same side is preferably 0.05-3.6 mmol per 1 m2 substrate. |
