A method of density correction in a heat developing apparatus of which
photothermographic recording material is thermally developed by light or
heat application, comprising the steps of outputting a density correcting
chart for setting density correcting conditions, measuring the image
densities of the density correcting chart with a densitometer using a
monochromatic light source, and correcting density correcting conditions
for image recording in the heat developing apparatus based on the measured
densities, wherein the density correcting conditions are corrected by
using only the densities of low to middle density areas out of the
densities of low to high density areas as measured with the built-in
densitometer and corrected based on the density correcting chart.
