Fremgangsmåde til tilvejebringelse af et billede ved hjælp af laser

摘要

A method for providing an image on a substrate, which comprises applying, to a relatively small area of the substrate, a formulation comprising a pigment and one or more other components that form an image on irradiation with laser light, and irradiating the area, wherein the image has greater constrast with respect to the pigment than with respect to the substrate.