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FLEXO Magazine : April 2011
Technologies & Techniques Figure 12: gRACol vs. orange 5. Figure 13: gRACol vs. orange 34. Figure 10: gRACol CMYK specification. Figure 11: gRACol vs. Red 2. ization pressrun. Results from the final press are shown in Table 5. The samples were then gathered and measured using ProfileMaker 5.0 to create ICC profiles for each ink set combination. reSuLTS After ICC profiles were created for each additional pig- ment, these files were evaluated with EskoArtwork’s Color Engine Pilot software to map color gamuts. The software provides the number of colors inside the color gamut, the average delta E value, and the maximum delta E value for the specified ink set combination. Each ink set combination is compared to the GRACoL CMYK specification as well as each other ink set combination. Tables 6-10 and Figures 5-9 capture the percent of colors in gamut, where in gamut is considered a reproduction of a color under a delta E value of three. The information is labeled according to the varying red or orange pigment for the speci- fied ink set combination because Green 7 and Violet 23 exist in each ink set. It is important to take notice of the significant in- crease in total colors achievable by adding the three additional pigments when compared to the GRACoL CMYK specification. Notice how there is nearly a 40-percent increase in the number of colors possible by adding any of the four red or orange ink pigments with the consistent green and violet pigments: Green 7, Violet 23, Red 2, Orange 5, Orange 34 and Orange 64. 140 FLeXO ApRil 2011 www.flexography.org DEGRAF Teamwork Foresight Power Drive Building a stronger tomorrow Glunz & Jensen and Degraf, the world’s leading offset and flexo prepress manufacturers, have joined forces to add new dimensions to the offset and flexo prepress markets - making us the strongest partner for you! Together we will move mountains.