DPM Barcode Scanner
Barcode scanner with integrated DPM module for capturing very small or difficult-to-read barcodes, as is often the case with etched codes (direct marking).
DPM=Direct Part Marking: Direct marking of items with barcodes
DPM technology allows users to apply their barcodes directly to parts and products without having to use a paper label. The advantage of direct part marking is clear: a component, an assembly or a complete product can be clearly marked for its entire life cycle and can therefore be traced seamlessly. A 2D DataMatrix code is usually used for direct marking, which can be used to encrypt large amounts of data on a very small area. There are different options here. In contrast to the one-dimensional barcode, the information in the DataMatrix is displayed as a pattern of square or round dots on a square or rectangular surface. This means that the amount of information is significantly larger than the 1D code and at the same time reading the code is significantly safer. e methods, e.g. laser marking, needle embossing, inkjet printing or electrolyte processes. Typical materials that are marked directly are metals and plastics. The DPM process reaches its limits due to low contrast, light reflections (on metal) or inaccurate marking with a 2D scanner. Special DPM scanners are used here, which have an aggressive imager and often special lighting.
Theoretically, a normal 2D barcode scanner can also read a direct part marking code, as it is usually a conventional data matrix code. However, the contrast and lighting properties found on a label are missing. Therefore, in order to safely read the direct marking, you need a special device that is tailored to the surface quality of the material that carries the barcode. Conversely, DPM scanners are able to capture a normal barcode on a label because of their particularly sophisticated optics and software.
The scanners have excellent movement tolerance – for extremely high responsiveness.
