Glossary of Terms

  • AC
    Author’s Correction
     
  • ASA
    A number set by the American Standards Assoc., which is placed on film stock to allow calculation of the length and “F” number of an exposure. Reference, “F” numbers.
     
  • Abrasion Resistance
    The resistance to scratching of a surface of paper by other paper surfaces or other materials.
     
  • Absorbency
    The ability of a material to take up moisture
     
  • Accordion Fold
    A type of paper folding in which each fold runs in the opposite direction to the previous fold creating a pleated or accordion effect.
     
  • Acetate
    A transparent or translucent plastic sheet material of a variety of colors, used as a basis for artwork and overlays.
     
  • Achromatic
    The non-colors… black, white and gray.
     
  • Acid Resist
    An acid-proof protective coating applied to metal plates prior to etching designs thereon. Bichromated solutions employed in photoengraving as sensitizers provide acid resist through the action of light on sensitized surface.
     
  • Acrylic
    A water-soluble polymer used in paints to make them dry both tough and flexible.
     
  • Actinic Rays
    Light exposure that affects chemical changes in paper.
     
  • Additive Colors
    In photographic reproduction, the primary colors of red, green and blue which are mixed to form all other colors.
     
  • Aerate
    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.
     
  • Agate
    A type size of 5 1/2 points. Reference, agate line.
     
  • Agate Line
    In newspaper classifieds, a measurement denoting 1/4 inch depth by one column width. 14 agate lines = one column inch.
     
  • Air
    Large white areas in a design layout.
     
  • Airbrush
    A compressed air tool that dispenses a fine mist of paint or ink; used in illustration and photo retouching.
     
  • Albion Press
    A hand operated printing press made of iron.
     
  • Album Paper
    A wood pulp paper with an antique finish used for pages of photo albums.
     
  • Albumen Plate
    A surface plate used in the lithography process; it has a photosensitive coating.
     
  • Albumin Paper
    A coated paper used in photography; the coating is made of albumen (egg whites) and ammonium chloride.
     
  • Alignment
    The condition of type and or art materials as they level up on a horizontal or vertical line.
     
  • Alkali Blue
    Also called reflex blue. A pigment used in carbon black inks and varnishes to improve luster.
     
  • Alley
    A term for a random, coincidental path or a row of white space within a segment of copy.
     
  • Alphabet Length
    The measured length (in points) of the lowercase alphabet of a certain size and series of type.
     
  • Amberlith
    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.
     
  • American Paper Institute
    An organization that correlates all paper related information.
     
  • Angle Bar
    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.
     
  • Aniline
    Oil-based solvent (quick drying) used in the preparation process of dyes and inks.
     
  • Animal Sized
    A technique of paper making which hardens the surface by passing the paper through a bath of animal glue or gelatin.
     
  • Anodized Plate
    In lithography, a plate manufactured with a barrier of aluminum oxide, which prevents chemical reactions that break down the plate; it provides optimum press performance.
     
  • Antigua
    An eleventh century Italian script typeface.
     
  • Antiquarian
    A handmade paper (53 x 31 inches), largest known handmade paper.
     
  • Antique Finish
    Paper with a rough, sized surface used for book and cover stock.
     
  • Antiskinning Agent
    An antioxidant agent used to prevent inks from skinning over in the can.
     
  • Apron
    The white area of text (or illustrations) at the margins which form a foldout.
     
  • Aqua Tint
    A printing process that uses the recessed areas of the plate; ideal for graded and even tones.
     
  • Aquarelle
    The hand application of color, through stencils onto a printed picture.
     
  • Aqueous Plate
    Water soluble plate coatings, which are less toxic and less polluting.
     
  • Arc Light
    A light source produced by the passing of electric current between two electrodes; used in the production of plates in photolithography.
     
  • Arms
    Those elements of letters that branch out from the stem of a letter, such as: “K” and “Y”.
     
  • Arrowhead
    A symbol shaped like an arrowhead that is used in illustration to direct a leader line. Reference, leader line
     
  • Art Paper
    A paper evenly coated with a fine clay compound, which creates a hard smooth surface on one or both sides.
     
  • Art Work
    Any materials or images that are prepared for graphic reproduction.
     
  • Art-Lined Envelope
    An envelope that is lined with an extra fine paper; can be colored or patterned.
     
  • Artwork
    All illustrated material, ornamentation, photos and charts etc., that is prepared for reproduction.
     
  • As To Press
    In gravure printing, (recessed areas of plate hold ink), a term used for proofs showing the final position of color images.
     
  • Ascender
    Any part of a lower case letter which rises above the main body of the letter such as in “d”, “b” and “h”.
     
  • Assembled negative
    Film negatives consisting of line and halftone copy which are used to make plates for printing.
     
  • Assembled view
    In illustration, a term used to describe a view of a drawing in its assembled or whole format.
     
  • Author’s Alterations (AA’s)
    Changes made after composition stage where customer is responsible for additional charges.
     
  • Autochrome paper
    Coated papers that are regarded as exceptional for multi-colored printing jobs.
     
  • Autolithography
    A printing method whereby the image is hand drawn or etched directly onto lithography plates or stones.
     
  • Autopositive
    Any photo materials which provide positive images without a negative.
     
  • Azure
    The light blue color used in the nomenclature of “laid” and “wove” papers.