Hickey – Printing Terms Glossary

The effect that happens when a speck of dust or debris (frequently dried ink) adheres to the printing plate and produces a spot or imperfection in the printing.

 

Dithering – Printing Terms Glossary

The process of averaging between pixels of unlike colors. This results in a smoother, blended transition between the edge of two areas rather than a jagged and ‘stair-step’ appearance. Also a method used in ink jet printers where colors are made by mixing colored dots in a randomized pattern.