Abstract: A composition comprising at least an electron-donating color-developing organic compound, an electron-accepting compound, and a color development regulator that hampers the color development by the electron-donating color-developing organic compound and the electron-accepting compound, wherein the color development regulator is hydrophilic, and the composition can change the color thereof in the presence of water or a water-containing liquid. A coloring agent comprising the composition, which composition is retained or carried by a specified microbody and can change its color in the presence of water or a water-containing liquid, wherein the specified microbody allowing water or a water-containing liquid to come into contact with the retained or carried composition.

Abstract: Providing a white pigment dispersion that shows good storage stability because the white pigment contained therein is less likely to sediment, an ink composition comprising the white pigment dispersion, and a method of image formation using the ink composition.

Abstract: Provision of an article such as a garment made of a textile fiber product, which article bears a desired transferred printed image, while maintaining its essential properties, such as texture, to the maximum possible extent; a manufacturing process for the article; a transfer material for the transfer; and a material for obtaining the transfer material. The transfer material is produced by forming hot melt adhesive layer portion on specified post hoc printing areas in a specified face of a substrate so that it can be removed from the substrate, forming a post hoc printed image layer for showing a desired image on the adhesive layer portion by plateless printing. Heating the adhesive layer portion and post hoc printed image layer of the transfer material and pressing them against the object article for fusion bonding of the adhesive layer portion to the object article, to fix the adhesive layer portion and post hoc printed image layer to the object article upon cooling.