Troubleshooting Guide - Pressroom Coatings

Issue: Offsetting of Ink

Potential Causes

Too little coating to 'seal' ink

Solution: Apply more coating.

Heavy films of inks are setting too slowly to be stable

Solution: Resort to faster setting, stronger or tighter bodied ink. Run as dry as possible to prevent over-emulsification.

Too little spray powder

Solution: Increase spray powder setting.

Excessive pressure from high loads

Solution: Reduce load height or rack loads 8-12".

Too much coating is being applied to lay smoothly

Solution: Reduce coater speed to apply thinner film.