Poor Transfer of Ink

Problem:

Rollers are improperly or inadequately cleaned and glazed

Solution:

Thoroughly clean rollers with a good quality glaze remover. After removing all ink with wash-up solvent, apply hot water to rollers. This will remove gum glaze that is not soluble in standard solvent-based wash-ups.

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Problem:

Calcium build-up on roller surfaces.

Solution:

After normal wash-up, follow with a hot water / white vinegar wash (2:1) to remove calcium deposits.

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Problem:

Rollers are improperly set or are swollen or distorted

Solution:

Adjust roller settings or check roller surface condition.

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Problem:

Indiscriminate use of wetting agents; gum and gum substitutes in fountain solution.

Solution:

Control use of fountain solution and additives which can have adverse effects on the rollers.