Disclosed is a process for producing a layered article including a substrate and an inorganic particle layer formed thereon, the process including: preparing a mixed inorganic particle dispersion comprising a liquid dispersion medium containing inorganic particles (A) and inorganic particles (B), the mixed inorganic particle dispersion being characterized by conditions (1) regarding particle size, (2) regarding volume fraction of inorganic particles and (3) regarding weight fraction; applying the mixed inorganic particle dispersion to a substrate, and removing the liquid dispersion medium from the mixed inorganic particle dispersion applied to form an inorganic particle layer on the substrate.