Verifiability of GTIN codes in proofing
Proofing service providers are increasingly required to be able to display “verifiable” GTIN codes, i.e. barcodes in the proof. The background to this is that especially the big german discounters like Aldi, Lidl, Hofer & Co. want to see a packaging proof from their suppliers in advance for approval. This packaging proof is not only visually assessed according to colour, but also the legibility of the printed EAN codes is evaluated using a measuring device and must meet certain criteria: Symbol contrast, modulation, decodability, defects, blemish: all this is measured …