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Glossary of Terms

Because of the size of our glossary, we have broken it out by letter. Please use the letter navigation below to locate the term(s) you are interested in.

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A

Acetate

A transparent sheet placed over originals or artwork, allowing the designer to write instructions and\or indicate a second color for placement.

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.

Acid Resist

An acid-proof protective coating applied to metal plates prior to etching.

Additive Color

color produced by light falling onto a surface, as compared to subtractive color. The additive primary colors are red, green and blue.

A4 Paper

ISO paper size 210 x 297mm used for Letterhead.

Against the Grain

At right angles to the grain direction of the paper being used, as compared to with the grain. Also called across the grain and cross grain. See also Grain Direction.

Airbrush

Pen-shaped tool that sprays a fine mist of ink or paint to retouch photos and create continuous-tone illustrations.

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.

Anodized Plate

An offset printing plate having a treated surface in order to reduce wear for extended use.

Anti-offset Powder

Fine powder lightly sprayed over the printed surface of coated paper as sheets leave a press. Also called dust, offset powder, powder and spray powder.

Antique Paper

Roughest finish offered on offset paper.

Aqueous Coating

Coating in a water base and applied like ink by a printing press to protect and enhance the printing underneath.

Artwork

All original copy, including type, photos and illustrations, intended for printing. Also called art.

Author's Alterations (AA's)

At the proofing stage, changes that the client requests to be made concerning original art provided. AA's are considered an additional cost to the client usually.