Dark or Dirty Print Color

Ink viscosity too high

Lower ink viscosity

Ink colorant concentration too high for press or job configuration

Add extender to the ink. Reduce ink film thickness

Ink film too thick

Reduce ink film thickness by lowering ink viscosity, increasing ink metering effectiveness, decreasing machine speed or decreasing anilox volume

Ink contamination from prior color

Thoroughly clean press station and replace ink

Ink formulation is incorrect

Consult your Sun Chemical Representative