Patent ID: 7115209

Claim:
A method for surface marking a solid substrate ( 1 ), according to which, during an exposure sequence, said substrate is exposed to coherent monochromatic light ( 2 ) in order to strip said substrate over an indented surface ( 3 ), wherein the exposure conditions, including duration, are set in order to restrict said indented surface to simple abrasion designed for the bonding of a printing medium, and the exposure sequence is followed by a sequence of projecting in discrete form during which particles ( 6 ) of said printing medium, the deposition of which subsequently defines a printed element ( 4 ), are projected in targeted fashion into the indented surface ( 3 , 31 ), wherein the projecting sequence is carried out in liquid form, by virtue of which the particles ( 6 ) are droplets in liquid form, the deposition of which defines a printed element ( 4 ), after drying, and wherein the droplets ( 6 ) comprise a polymerizable printing medium, and, after the printing medium has been deposited on the indented surface ( 3 , 31 ), this printing medium is polymerized under exposure to ultraviolet light, for example monochromatic and coherent ultraviolet light.