A method for manufacturing an image display panel includes the steps of heating a substrate for the image display panel having a different-emissivity member on at least a part of one surface of the substrate, with the member having an emissivity different from that of the substrate, and then placing a cooling plate opposite the heated substrate to absorb radiation heat from the substrate to cool the substrate. The cooling plate has a different-emissivity area in a pattern that can suppress a temperature distribution that may be created in the substrate if the substrate is cooled using a cooling plate with a uniform emissivity, with the different-emissivity area having an emissivity different from that of other areas.