Weak Print Color

Too much water in the ink due to water in the press station or operator error

Replace ink or add fresh ink. Repair station to drain wash up water. Measure amount of water added to ink

Anilox roll is worn or dirty

Clean or replace anilox roll

Ink viscosity is too low

Add fresh ink to raise viscosity

Ink film thickness is too low

Increase ink film thickness by:

  1. Raising ink viscosity
  2. Reducing metering of the anilox roll
  3. Increasing anilox roll volume
  4. Adjusting ink for more transfer

Plate impression is incorrect

Adjust plate to substrate impression

Ink does not contain enough color

Consult with Sun Chemical Representative

Printing plate is too hard

Use plates with a softer durometer

Plates are glazed or dirty

Clean or replace plates

Substrate surface resists ink

Consult with Sun Chemical Representative

Ink formulation is incorrect

Consult with Sun Chemical Representative