Wash Up
To clean ink and fountain solutions from rollers, fountains, screens, and other press components.

Waste
Unusable paper or paper damage during normal makeready, printing or binding operations, as compared to spoilage.

Watermark
Translucent logo in paper created during manufacturing by slight embossing from a dandy roll while paper is still approximately 90 percent water.

Web Press
Press that prints from rolls of paper, usually cutting it into sheets after printing. Also called reel-fed press. Web presses come in many sizes, the most common being mini, half, three quarter (also called 8-pages) and full (also called 16-pages).

Wet Trap
To print ink or varnish over wet ink, as compared to dry trap.

With the Grain
Parallel to the grain direction of the paper being used, as compared to against the grain. See also Grain Direction.

Woodfree Paper
Made with chemical pulp only. Paper usually classified as calendered or supercalendered.

Wove
Paper manufactured without visible wire marks, usually a fine textured paper.