Weak Print Color

Problem:

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

Solution:

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

______________________________________________________________________

Problem:

Anilox roll is worn or dirty.

Solution:

Clean or replace anilox roll.

______________________________________________________________________

Problem:

Ink viscosity is too low.

Solution:

Add fresh ink to raise viscosity.

______________________________________________________________________

Problem:

Ink film thickness is too low.

Solution:

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

______________________________________________________________________

Problem:

Plate impression is incorrect.

Solution:

Adjust plate to substrate impression.

______________________________________________________________________

Problem:

Ink does not contain enough color.

Solution:

Consult with a Sun Chemical representative.

______________________________________________________________________

Problem:

Printing plate is too hard.

Solution:

Use plates with a softer durometer.

______________________________________________________________________

Problem:

Plates are glazed or dirty.

Solution:

Clean or replace plates.

______________________________________________________________________

Problem:

Substrate surface resists ink.

Solution:

Consult with a Sun Chemical representative.