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Continue to ChatQuery : Printer wants to use CMYK 30-30-20-100 for black which produces a dark purple? I'm doing some work for a food truck wrap and the printer wants designers to use 30-30-20-100 CMYK for all black https://vmapp.org/query/42429/Printer-Wants-To-Use-CMYK-30-30-20-100-For-Black-Which-Produces-A-Dark-Purple-I-M-Doing-Some-Work-For-A-Food-Truck-Wrap-And-The-Printer-Wants-Designers-To-Use-30-30-20-100-CMYK-For-All-Black/