An image receiving material comprises an image receiving layer provided on a support. The image receiving layer contains particles of a thermoplastic compound. The image receiving layer has a porous surface formed by the particles. According to the present invention, the image receiving material is prepared by forming the image receiving layer on the support and heating the image receiving layer at a temperature of higher than a softening point of the thermoplastic compound to widen pores in the porous surface. The image receiving material is preferably used in combination with a light-sensitive material which comprises a support and a light-sensitive layer in which light-sensitive microcapsules are dispersed. The light-sensitive microcapsules contain silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a color image forming substance. An image forming process using the light-sensitive material and the image receiving material of the present invention comprises the steps of imagewise exposing to light the light-sensitive material; heating the light-sensitive material to develop the silver halide; and pressing the light-sensitive material on the image receiving material to form a color image on the image receiving material.