Ghosting (Flexo)

In flexographic printing, the ghosting defect is an unwanted faint image or pattern that reappears in non-image areas.

Causes (C) and Solutions (S) of Ghosting

Anilox Roll Problem

C: Anilox roll is clogged

S: Clean the anilox roll deeply

Ink Properties

C: Ink dries too quickly, clogs the anilox's cells

S: Clean the anilox roll, and reduce the drying speed of the ink

Ink Chamber Issue

C: Pressure is too hard

S: Change to a soft cushion sticky-back

C: Insufficient ink in the chamber

S: Remove small burrs by professional polishing if possible

Other Factors

C: The printing ink and overprint varnish are not matched

S: Make sure the varnish will not dissolve the previous printing ink

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