Adhesion

Surface is not ink or lacquer receptive

Treat substrate if treatable, but do not over-treat; change to recommended ink type; and/or coating primer if possible

Ink is not drying properly

Add faster drying solvents and/or increase air and heat delivery. Thin inks if possible

Ink is brittle due to insufficient amount of plasticizer

Add small amount of plasticizer

Ink choice is improper for substrate

Reformulate ink for specific substrate

Ink viscosity is too high

Reduce ink viscosity to proper level

Web temperature is too low for substrate and ink

Increase web temperature to adequate level for substrate and ink

Re-worked ink has an out-of-balance pigment to vehicle ratio

Remake ink or refresh ink with fresh pigment and resin