Silver halide photosensitive material and image-forming method using heat-responsive-discolorable coloring composition

A method for forming an image comprising the steps of exposing a silver halide photosensitive material, and heating the exposed silver halide photosensitive material at 60 to 200° C. to form an image thereon, said silver halide photosensitive material comprising a substrate, a heat-responsive-discolorable coloring layer and a photosensitive layer coated thereon, wherein said heat-responsive-discolorable coloring layer is composed of a heat-responsive-discolorable coloring composition, which is colored at a temperature lower than its discoloration initiation temperature (T);

• which is substantially discolored at a temperature equal to or higher than the discoloration initiation temperature (T);
• and which does not recover its color once discolored, even when its temperature is lowered to a temperature lower than the discoloration initiation temperature (T) again, said discoloration initiation temperature (T) being 60 to 200° C., and said heat-responsive-discolorable coloring composition comprising a polymer having a glass transition temperature (Tg) of 60 to 200° C., and said photosensitive layer comprising a silver halide, dye-providing compound and a binder, the heat responsive-discolorable coloring composition being heated to a temperature equal to or higher than the glass transition temperature (Tg) of the polymer, whereby the polymer hinders interaction between an electron-donating color former and an color developing agent, resulting in discoloration.