| 摘要 |
A thermal processing method of a photothermographic material comprising light-insensitive aliphatic carboxylic acid silver salt particles, light-sensitive silver halide grains, a reducing agent for silver ions and a binder is disclosed, comprising (a) exposing the photothermographic material, and (b) developing the exposed photothermographic material at a development temperature of at 110 to 150 °C to form an image, wherein the aliphatic carboxylic acid silver salt particles are comprised of 70 to 99 mol% of silver behenate and exhibit an average sphere equivalent diameter of 0.05 to 0.5 µm and a standard deviation of particle size of 0.3 µm or less, and the method further comprising (c) heating the photothermographic material at a temperature lower than the development temperature.
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