Ink Smearing / Bleeding

First down ink is not fully dry

Increase drying speed of ink by:

  1. Reducing ink viscosity
  2. Reducing ink thickness by changing metering conditions
  3. Adding faster drying solvent
  4. Adjusting air balance and heat

Second down ink, top lacquer or adhesive is too rich causing first down ink to dissolve

Check second down material and reformulate for non-aggressive properties. Consult your Sun Chemical representative for a more resistant first down ink

Foreign object is dragging on wet print

Trace web and remove dragging object

Not wiping well, doctor blade issues

Reset doctor blades to correct contact angles. Replace blades. Check chamber balance – side to side – in and out