Method for preparing photosensitive image forming medium coating solution, and photothermographic elements

摘要

A photosensitive image forming medium coating solution is prepared by converting a water dispersion containing at least an organic silver salt, but substantially free of a photosensitive silver salt into a high pressure, high speed flow, causing a pressure drop of 900-3,000 kg/cm<2> to the flow, and then mixing the flow with a photosensitive silver salt. Using this aqueous coating solution, a photothermographic element having a low haze, low fog and high sensitivity can be produced with the advantages of environmental protection and low cost.