If the Ink becomes over-emulsified/waterlogged, this changes the physical properties of the ink and results in poor transfer
Check that pH, conductivity, Brix level and tempera-ture are to specification and try to run less water
Inadequate or excessive blanket cylinder pressure and/or plate or blanket packing
Check blanket cylinder pressures and/or plate and blanket packing are all to manufacturer's specifica-tions
Ink film thickness may be too high or too low
Verify densities are in normal range
Ink is poorly ground
Please Check the grind, Consult your ink supplier
Ink roller train or ink fountain is too cool
Adjust form rollers to 72'-80"F (22"-26*C) and be sure ink fountain is 70'F (21.C) or above to ensure proper ink flow and transfer
Rollers are the wrong durometer or improperly set
Check roller settings, clean and condition / deglaze rollers
Verify whether the pilling is defective paper coating or ink
If defective paper coating, try a different batch of paper or lower the tack of the ink slightly if necessary
For more information, please contact us.
