Disclosed is a method for generating photonically processed surface patterns on a substrate by inkjet printing the substrate with a photonically active material, for example of electrically conductive particles or of particles of a material that can be converted by irradiation into an electrically conducting material, and by treating the imprinted surface with actinic laser radiation which is emitted from a laser interconnected with the print head of the inkjet printer. The laser radiation causes the photonically curable material to become chemically and/or physically modified. The process is easy to implement, needs only low energy, is very fast and can be used to generate patterns of functional materials at low cost.