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
Watermark - Translucent logo in paper created during
manufacturing by slight embossing from a dandy roll while paper is
still approximately 90 percent water.
Web Break - Split of the paper as it travels through
a web press, causing operators to rethread the press.
Web Gain - Unacceptable stretching of paper as it
passes through the press.
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.
Window - (1) In a printed product, a die-cut hole
revealing an image on the sheet behind it. (2) On a mechanical, an
area that has been marked for placement of a piece of artwork.
Wire Side - Side of the paper that rests against
The Fourdrinier wire during papermaking, as compared to felt side.
With the Grain - Parallel to the grain direction
of the paper being used, as compared to against the grain. See also
Woodfree Paper - Made with chemical pulp only. Paper
usually classified as calendered or supercalendered.
Working Film - Intermediate film that will be copied
to make final film after all corrections are made. Also called buildups.
Wove - Paper manufactured without visible wire marks,
usually a fine textured paper.
Wrong Reading - An image that is backwards when
compared to the original. Also called flopped and reverse reading.