Patent ID: 7153645

Claim:
A silver salt photo-thermal photographic dry imaging material comprising on a support: a light-sensitive layer containing light-insensitive silver salt of aliphatic carboxylic acid particles, a light-sensitive emulsion having light-sensitive silver halide grains, a silver ion reducing agent and a binder, wherein the light-sensitive emulsion contains silver halide particles having diameters of from 0.001 μm to 0.050 μm in the ratio of 50% or more by weight in terms of silver of the entire light-sensitive silver halide grains contained in the imaging material, the light-sensitive silver halide grains are present in an amount of 0.01 to 0.2 grams per square meter of coated silver, the number average particle diameter of the light-insensitive silver salt of aliphatic carboxylic acid is from 0.01 μm to 0.60 μm, and wherein the light-insensitive silver salt of aliphatic carboxylic acid particles are produced by mixing an alkali metal salt of aliphatic carboxylic acid with the light-sensitive silver halide grains, and the alkali metal salt of aliphatic carboxylic acid is prepared by adding potassium hydroxide to an aliphatic carboxylic acid.