Slow Drying and Slow Setting

Problem:

Paper pH.

Solution:

Paper should be between a pH of 6.0 and 8.0. Readings lower or higher than this range will affect ink drying.

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Problem:

Paper absorption.

Solution:

A paper with low absorption will prevent the inks from setting up, and will slow down the overall drying of the ink film.

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Problem:

Fountain solution.

Solution:

High acidity levels will retard the oxidation, as well high levels of alcohol substitutes.

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Problem:

Paper absorption.

Solution:

Lower the absorption. Slow the setting.

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Problem:

Lifts are stacked too high.

Solution:

Run shorter lifts on heavier coverage jobs and ensure spray powder is dispensing correctly as well as the correct particle size.