The application of lasers for labelling parts is well established. This process involves directing the laser beam via two pivoting deflection mirrors onto the work surface to create the desired label. The energy of the laser marks either by removing material from the surface or, via a chemical/thermal process, adding a coloured coating. 

Examples of this are the labelling of anodised aluminium (removal of the anodic coating) and stainless steel (creation of a coloured coating). This technology also enables the etching of plastics, or more precisely the fillers added to the plastics. Many black plastics contain carbon, which is easily bleached creating an almost white writing.

Materials: metals and plastics with a labelling surface of 100mm x 100 mm.
Etching process: material erosion, dyeing.