Abrasion Resistance
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The resistance to scratching of a surface of paper by other paper surfaces or other materials.
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Absorbency
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The ability of a material to take up moisture
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AC
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Author's Correction
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Accordion Fold
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A type of paper folding in which each fold runs in the opposite direction to the previous fold creating a pleated or accordion affect.
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Acetate
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A transparent or translucent plastic sheet material of a variety of colours; used as a basis for artwork and overlays.
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Achromatic
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The non-colours... black; white and grey.
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Acid Resist
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An acid-proof protective coating applied to metal plates prior to etching designs thereon. Bichromated solutions employed in photoengraving as sensitisers provide acid resist through the action of light on sensitised surface.
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Acrylic
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A water-soluble polymer used in paints to make them dry both tough and flexible.
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Actinic Rays
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Light exposure that affects chemical changes in paper.
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Additive Colours
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In photographic reproduction; the primary colours of red; green and blue which are mixed to form all other colours.
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Aerate
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This refers to a manual process whereby an air stream is blown onto paper sheets to create a riffling effect that separates the sheets as they are fed to the printing press.
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Agate
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A type size of 5 1/2 points. Reference; agate line.
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Air
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Large white areas in a design layout.
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Airbrush
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A compressed air tool that dispenses a fine mist of paint or ink; used in illustration and photo retouching.
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Albumen Plate
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A surface plate used in the lithography process; it has a photosensitive coating.
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Albumin Paper
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A coated paper used in photography; the coating is made of albumen (egg whites) and ammonium chloride.
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Alignment
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The condition of type and or art materials as they level up on a horizontal or vertical line.
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Alkali Blue
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Also called reflex blue. A pigment used in carbon black inks and varnishes to improve lustre.
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Alley
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A term for a random; coincidental path or a row of white space within a segment of copy.
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Alphabet Length
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The measured length (in points) of the lowercase alphabet of a certain size and series of type.
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Amberlith
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Red-orange acetate used for masking mechanicals when photographing for plates. The amberlith area appears black to the camera; and prints clear on the resulting film.
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Angle Bar
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In "web-fed" printing (printing on rolls of paper as opposed to single sheets); an angle bar is a metal bar that is used to turn paper between two components of the press.
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Aniline
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Oil-based solvent (quick drying) used in the preparation process of dyes and inks.
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Animal Sized
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A technique of paper making which hardens the surface by passing the paper through a bath of animal glue or gelatine.
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Anodised Plate
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In lithography; a plate manufactured with a barrier of aluminium oxide; which prevents chemical reactions that break down the plate; it provides optimum press performance.
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Antigua
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An eleventh century Italian script typeface.
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Antique Finish
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Paper with a rough; sized surface used for book and cover stock.
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Antiskinning Agent
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An antioxidant agent used to prevent inks from skinning over in the can.
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Apron
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The white area of text (or illustrations) at the margins; which form a foldout.
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Aqua Tint
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A printing process that uses the recessed areas of the plate; ideal for graded and even tones.
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Aqueous Plate
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Water-soluble plate coatings; which are less toxic and less polluting.
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Arc Light
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A light source produced by the passing of electric current between two electrodes; used in the production of plates in photolithography.
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Arms
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Those elements of letters that branch out from the stem of a letter; such as "K" and "Y".
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Arrowhead
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A symbol shaped like an arrowhead that is used in illustration to direct a leader line. Reference; leader line
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Art Paper
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A paper evenly coated with a fine clay compound; which creates a hard smooth surface on one or both sides.
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Art Work
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Any materials or images that are prepared for graphic reproduction.
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Art-Lined Envelope
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An envelope that is lined with an extra fine paper; can be coloured or patterned.
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Artwork
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All illustrated material; ornamentation; photos and charts etc.; that is prepared for reproduction.
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Ascender
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Any part of a lower case letter; which rises above the main body of the letter such as in "d"; "b" and "h".
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Assembled view
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In illustration; a term used to describe a view of a drawing in its assembled or whole format.
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Author's Corrections (AC's)
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Changes made after composition stage where customer is responsible for additional charges.
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Autopositive
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Any photo materials; which provide positive images without a negative.
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Azure
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The light blue colour used in the nomenclature of "laid" and "wove" papers.
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About Paper
