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Printing Glossary

A4 Paper: ISO standard paper size 210 x 297mm or 8.3 x 11.7". The common paper size used outside the US in place of 8.5 x 11.
Accordion fold: Folding paper by bending each fold in the opposite direction of the previous fold creating a pleated or accordion effect.
Acid-free paper: A paper containing no acidity or acid producing chemicals that degrades less over time than acidic papers.
Against the Grain: Running a sheet of paper through a printing press at right angles to the grain direction of the paper, as opposed to with the grain. This is usually suboptimal for both press operation and registration of the 4 color process inks. Sometimes called cross grain.
Airbrush: A compressed air tool that sprays a fine mist of paint or ink, used in illustration and photo retouching.
Anti-aliasing: The process of averaging between pixels of different colors. This results is a smoother, more blended transition between the edge of two areas rather than a distinctly jagged appearance.
Aqueous Coating: This clear coating is used to protect your printed pieces. It provides a high-gloss surface that deters dirt and fingerprints. Aqueous coating improves the durability of postcards as they go through the mail, and protects business cards as they ride around in people's pockets. It also looks beautiful on brochures, catalog covers, and stand-alone flyers.
Artwork: The original physical materials, including photos, graphic images, text and other components needed to produce a printed piece. Can also now refer to the electronic or digital components needed for preparing a printed piece for production on a press or copier.
Ascender: Any part of a lower case letter which rises above the main body of the letter such as in "d", "b" and "h".
Backslant: Any type that tilts to the left or backward direction; opposite of italic type.
Back Up: How an image on one side of a printed sheet aligns with the image on the other side.