Patent ID: 6524776
Filing Date: 2003-02-25
Classification: G03C

Abstract:
A photothermographic material comprising a support having thereon a photosensitive layer comprising non-photosensitive organic silver salt grains, photosensitive silver halide grains, a binder, a cross-linking agent, and a reducing agent,wherein a silver coverage in said photosensitive layer is from 0.3 to 2.0 g/m2; the number of developed silver halide grains N1 in the maximum density area is from 5Ã—1013 to 1Ã—1015/m2 when said photothermographic material is subjected to exposure in an exposure amount of 280 &mgr;J/cm2 and subsequently is subjected to heat development at 123Â° C. for 16.5 seconds; and, in the maximum density area, the number of developed silver halide grains N1 and the number of undeveloped silver halide grains N2 satisfy the formula; 0.70&lE;N1/(N1+N2)&lE;0.95.