Scuffing occurs during post-press operations in sheet-fed and heatset offset printing when heavily inked areas are pressed against non-printing areas on other pages. It appears as a sandpaper effect and is not related to drying in heatset printing. Waxes added to inks and used in silicon solutions can minimize scuffing by reducing friction between inked and non-inked areas during conveyance, stacking, and binding.

1. Scuffing with matt/silk grades
Printed signature goes through many operations that
involve pressure and movement at the same time

2. Scuffing with matt/silk grades
• Occurs when heavily inked area is
against non-printing area
• Is seen both in sheet-fed and heatset
offset
• Usually occurs during post-press
operations
• conveyor belt
• stacker
• binding
• Is not drying related in heatset
• sandpaper effect
• Waxes are used to minimise problem
• wax in inks
• wax in silicon solution