Mottled Print

Problem:

Surface finish or caliper of substrate is inconsistent.

Solution:

Increase plate to substrate impression or switch to softer plates.

______________________________________________________________________

Problem:

Plate impression is incorrect.

Solution:

Adjust plate to substrate impression.

______________________________________________________________________

Problem:

Substrate surface finish or textured pattern appears on surface.

Solution:

Replace stock. Check with a Sun Chemical representative for additives.

______________________________________________________________________

Problem:

Ink viscosity is too low.

Solution:

Raise viscosity by adding fresh ink.

______________________________________________________________________

Problem:

Too much water has been added to the ink, causing it to be out of balance.

Solution:

Add fresh ink or replace ink in press pump.

______________________________________________________________________

Problem:

Anilox roller, wiper roll, or printing plate is dirty or damaged.

Solution:

Clean or replace rolls or plate.

______________________________________________________________________

Problem:

Ink in press is contaminated.

Solution:

Clean press station and replace ink.

______________________________________________________________________

Problem:

Ink formulation is incorrect.

Solution:

Check with a Sun Chemical representative.