Dye image forming method

In a method for forming a dye image wherein a heat-processable light-sensitive material comprising a support having thereon a non-light-sensitive layer and a light-sensitive layer containing a light-sensitive silver halide and a dye-providing material capable of releasing and forming a diffusible dye upon heat development is imagewise exposed to light and thereafter is subjected to heat development to release or form the diffusible dye, which is transferred to a dye-receiving material having a dye-receiving layer to form a dye image on the dye-receiving layer, the improvement wherein the heat development or the transfer of the dye is carried out in the presence of a compound represented by formula 1 and a compound represented by formula 3,

• (X.sub.1 .sub.t --Q formula 1
• R.sub.31 --X.sub.2 TM formula 3
• wherein X.sub.1 represents a chlorine atom ;
• Q represents ##STR20## wherein R.sub.15 represents a monovalent organic group having not less than 8 carbon atoms;
• t represents 2;
• R.sub.31 represents an alkyl group or a cycloalkyl group;
• X.sub.2 represents a bromine atom or an iodine atom;
• and wherein said compound represented by formula is contained in the non-light-sensitive layer or the dye receiving layer;
• and said compound represented by formula 3 has a molecular weight not less than 200 and is contained in the light-sensitive layer.