We've been profiling media with our 64" valuejet (using Onyx 7.0 and GretagMacbeth Eye-one) and have noticed that the Magenta ink density is very weak. For example, on Avery 3103 vinyl, we measure density values of:
Cyan 2.23
Magenta 1.29
Yellow 0.95
Black 2.38
Magenta typically should have...