An excessive increase in the size of a halftone dot from film to the printed image.



-Excessive ink volume;

-Excessive plate thickness or plate swelling;

-Wrong tape or trapped air;

-Excessive pressure settings;

-Poor ink metering application;

-Damaged or worn press parts;

-Dirt on impression and/or plate cylinders;

-Viscosity too low.



- Reduce anilox volume to a minimum while maintaining colour balance;

- Use thinner plates;

- Check for trapped solvents in the finished plate;

- Change to a cushion mounting tape;

- Check for bubbles under the mounting tape, burst and remount plate;

- Reduce pressure settings to a minimum;

- Use a doctor blade metering system;

- Check and replace damaged or worn gears, bearings or cylinders;

- Clean impression and/or plate cylinders;

-Check and maintain ink viscosity.