Blade angle is too flat
Shargen blade angle for a better wipe
Blade position is incrorrect
Move back up blade closer to the doctor blade edge
Cylinder worn - wide walls
Scope cylinder - check chrome for wear, copper showing
Doctor blade is wavy
Align doctor blade properly
Foreign matter such as paper, substrate dust or pigment particles are present in the ink
Filter and/or replae ink. Eliminate source of the foreign matter
Ink is drying too slowly
Add faster drying solvents. For aqueous inks check and adjust pH
Ink is too thin
Increase ink viscosity
Tension control is poor
Check and adjust tension
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