Troubleshooting Guide - Pressroom Conventional
On Press Issue: Rubbing and Scuffing
Potential Causes
Too much water being used
Solution: Reduce dampener settings.
Paper contains an excessive amount of water
Solution: Change paper.
Color contains Reflex (Alkali)
Solution: Reformulate without Reflex Blue or use imitation Reflex Blue.
pH in fountain solution is too high
Solution: Adjust pH and conductivity to proper specification.
Ink isn't completely dry
Solution: See Drying.
Roughness creates poor rub between unprinted and printed surface
Solution: Change substrate to smoother surface. Aqueous coat or varnish to protect.
Too much ink being run
Solution: Lower level of ink use.
Ink is improperly formulated for rub-resistance
Solution: Review formula.
