Streaks, tracking, or ink smearing due to the folding or finishing operations through mechanical contact.
|Install grater roller with sharper points.
|Ink film thickness
|Decrease ink film thickness by increasing pigment strength in ink.
|Web bustle wheels
|Move bustle wheels so they are in contact with non image area, if this is not possible, put Teflon tape on wheels to reduce abrasiveness.
|Air flow through oven causing paper to move around and coming in contact with oven parts
|Check to make sure web tension is set properly. Consult oven manufacturer for proper adjustment.
|Chill roll temperature not cool enough
|Reduce chill roll temperature to 72 to 75 F°. Do not go too low on temperature as condensation may occur.
|Silicone dosage or applicator
|Check to make sure silicone applicator roller is clean and functioning properly, check dosage, if low add extra silicone to reduce abrasiveness. Consult silicone supplier.
|Web temperature not high enough to drive off ink solvents or too high and not allowing chill rollers to bring web temperature down
|Adjust oven temperature, remember that paper will burn at 451 F°. Decrease press speed to allow longer contact time in oven. Increase air velocity through oven. Check web temperature before and after chill rolls. Consult oven manufacturer.