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Flexo Magazine : May 2013
Technologies & Techniques Multi-Channel Profiling Has Profound Effect on Print Performance gMg open Color system garners 2013 FTA Technical innovation Award By Robert Moran Proofs that accurately simulate a printed result—flexog- raphers and their consumer product company (CPC) customers have been asking for them, if not insisting on their development for years. Rather than focus on color management for commercial print—which typically uses one CMYK ink set, a limited variety of substrates, and relies on International Standards Orga- nization (ISO) or General Requirements for Applications in Commercial Offset Lithography (GRACoL) standards—GMG’s focus was on packaging, which typically requires five-to-eight different spot colors, a wide range of substrates; as well as a vast number of ink channels and print sequences. At issue: predictability of overprints—inks printed on top of each other. PROFILE ENGINE • High-quality, multi-color profiles simulate the printing behavior of diverse printing technologies, media types, and screening technologies • Spectral modeling algorithms are coupled with spectral ink measurements that analyze the properties of each ink color, as well as the substrate’s colorimetric properties • Information is applied to a specific printing process (flexo, offset, gravure) • Final press condition is simulated on a proof 50 FLeXO MAy 2013 www.flexography.org Measurements are centrally saved and categorized according to print variables. This lets operators build an archive of measurements. it also allows them to combine existing measurements to new profiles, whenever a new combination of inks must be profiled.