A light-emitting gallium nitride-based III-V group compound semiconductor device with high light extraction efficiency that features on a substrate with concave andor convex surface, a texturing surface layer, and a transparent conductive window layer. A process for producing a toner for developing an electrostatic charge image, characterized by supplying a monomer into a dispersion containing wax and a polymerizable monomer having a C8-100 hydrocarbon group, carrying out the polymerization, followed by flocculation treatment. At least a portion of the region of photoresist is then exposed to a light, wherein the intensity of the light is less than the intensity required to cure the photoresist.