Wash Up 

To clean ink and fountain solutions from rollers, fountains, screens, and other press components. 
Unusable paper or paper damage during normal makeready, printing or binding operations, as compared to spoilage. 
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. 
(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 Grain Direction. 
Woodfree Paper 
Made with chemical pulp only. Paper usually classified as calendered or supercalendered. 
Working Film 
Intermediate films that will be copied to make final film after all corrections are made is also called as buildups. 
Paper manufactured without visible wire marks, usually a fine textured paper. 
Wrong Reading 
An image that is backwards when compared to the original is also called as flopped and reverse reading.
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