Toning is the inability to remove fine ink particles that deposit on to the non — image area of the plate.
Tinting is ink pigments leaching from the ink and feeds back into the fountain solution, that then deposit in the non-image area of the plate.
Cause | Cure |
---|---|
Wrong pH/Conductivity | Check and adjust as necessary. If problem persist consult with your F/S manufacturer |
Roller settings or durometer not correct | Check durometer and roller settings. Replace or adjust as necessary |
Plate to blanket pressure to high | Check and adjust to press manufacturer recommended settings |
Plates | Check exposure and processors |
Press washes ( Detergent or oil based) | Wash roller train and plates. Rinse 2 or 3 times thoroughly with warm water |
Fountain solution to strong or weak | Consult with your F/S manufacturer |
Water temps to high | Adjust recirculation tank chilling unit to 58°–65°. If no chilling unit available consider limited use of ice bags in recirculation tank |
Ink Temperature | Increase ink vibrator chill water to 80°–90° |
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