Building block, a process for the preparation of a building block and device for laser - ablation

摘要

Building block 100, and a substrate 90, a coating 10, wherein the coating 10 90 at least partially covers the substrate and wherein the coating 10 is configured to at least partly by means of laser - ablation to be removed, whereby between the substrate 90 and the coating 10, at least in part, a laser - detector layer 20 is adapted to provide a detector signal 54 for the termination of the laser ablation - to produce.