High acidity levels will retard the oxidation as will high levels of alcohol substitutes
Lifts are stacked too high
Run shorter lifts on heavier coverage jobs and ensure spray powder is dispensing correctly and is the correct particle size
Lower the absorption, Slow the setting . A paper with low absorption will prevent the inks from setting up, and will slow down the overall drying of the ink film
Paper should be between a pi of 6.0 and 8.0 Readings lower or higher than this range will affect ink drying
Water levels too high and emulsifying the ink
Adjust ink/water balance to lowest levels for better results
For more information, please contact us.