Screening (Gravure)

In gravure printing, screening is the unwanted visibility of the cylinder’s screen/cell pattern in areas that should appear smooth.

Causes (C) and Solutions (S) of Screening

Ink Issues

C: High viscosity ink

S: Reduce ink viscosity

C: Ink drying too quickly

S: Add slow-drying agent

C: Lack of ink

S: Fill the ink tray with fresh ink

Doctor Blade Issues

C: Doctor blade angle is too sharp

S: Flatten the blade

C: Excessive pressure of the doctor blade

S: Reduce pressure

C: Too hard doctor blade setting

S: Bring the blade forward, or use thinner supporting blade

Impression Issue

C: Lack of impression pressure

S: Increase impression pressure

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