Replace or mechanically clean
Dried ink, dirt or rust is on impression cylinder
Check and clean cylinder/drum
Impression between plate and substrate is too low
ncrease plate impression and check print appearance.
Ink is drying too fast
Add slower drying solvents
Sticky-back tape is too soft
Use hard tape for solid print areas when possible.
Substrate is poor or marginally treated
Check and adjust treatment levelor change stocks
Surface of substrate has holes
Check substrate and reduce ink viscosity for better wetting. Consult your substrate supplier.
Surface tension of ink is not low enough to properly flow out on substrate(seen mostly in aqueous inks)
Reduce surface tension of inks by adding wetting agents.
Use of defoamer in water inks is excessive
Add fresh ink or check formula and reformulate ink
For more information, please contact us.