Printing Terms Glossary
Absorption – The property which causes paper to take up liquids or vapors in contact with it.
Accordian Fold – A bindery term used to describe two or more parallel folds which open like an accordian.
Acid-free Paper – Paper made from pulp containing little or no acid so it resists deterioration from age. Also called alkaline paper, archival paper, neutral pH paper, permanent paper and thesis paper.
Additive Primaries – Red, Green and Blue (RGB). When lights of these colors are added together, they produce the sensation of white light.
Against the Grain – A bindery term used to describe folding paper at a perpindicular angle to the grain direction of the paper. This is generally not recommended for a quality finished product. See also Grain Direction.
Alkaline Paper – A paper made with synthetic alkaline sizing and an alkaline filler such as calcium carbonate which gives the paper more than four times the life (more than 200 years) of acid-sized papers.
Alteration – Any change made by the customer after copy or artwork has been given to the service bureau, separator or printer. The change could be in copy, specifications or both. Also called AA, author alteration and customer alteration.
Analog Proof – A pre-press color or position proof made from film negative separations.
Anti-Offset Spray – A fine spray of dry powder used on the sheet delivery unit of a printing press to prevent wet ink from tranferring from the front of one press sheet to the back of another. Also called dust, offset powder, powder and spray powder.
Antique Finish – A paper term describing the surface, usually on text grade papers, that has a naturally rough finish.
Aqueous Coating – Coating in a water base and applied like ink by a printing press to protect and enhance the printing underneath.
Art – A general term used to describe digital files or reflective copy used to generate film negatives and printing plates.
ASCII – American Standard Code for Information Interchange. A standard means of representing text as numerical data. A common file format for automated mail list generation.
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