The PRINTING United Alliance Glossary serves as an excellent industry terminology resource. It is the language by which we all communicate. Without it, universal understanding would be impossible.

To keep our constituents well informed about changes to the increasingly complex industry terminology, PRINTING United Alliance has developed this glossary of terms. Definitions are for general reference only. Usage may vary between companies, individuals, or national and country customs. The information presented is as accurate as the authors and editors can ascertain and PRINTING United Alliance assumes no responsibility for the use of information presented herein.
  • Butt cut label
    Labels separated by a single knife-cut to the release liner.
  • Butt register
    Artwork, which registers or butts one color next to another without a gap or trap between them.
  • Button test
    A test designed to determine relative fusibility of frit or powder.
  • Butyl acetate
    Solvent used as a constituent of lacquers because of its low rate of evaporation.
  • Butyl alcohol
    A solvent high in strength for most natural gums, widely used in the formulation of nitrocellulose lacquers and synthetic resin inks and coatings.
  • Butyl cellosolve
    Trade name for ethylene glycol monobutyl ether, a high boiling point, high flash point, slow evaporating glycol ether solvent, sometimes used in lacquer inks or coatings based on vinyl, nitrocellulose and the like.
  • Butyrate
    Common name for a tough cellulose acetate thermoplastic widely used for signs, and displays.
  • By-product
    A chemical substance produced during the manufacture, processing, use, or disposal of another substance or mixture.
  • Byte (B)
    A unit used to measure the capacity of a computer (eight bits equal one byte); the representation of a character.
  • C1S
    Acceptable abbreviation for coated one side.
  • C2S
    Acceptable abbreviation for coated two sides.
  • Cabinet oven
    A device for thermal treatment by convection, mounted on a floor stand, usually used for testing in the lab, or for very low production of small parts.
  • Cache
    A temporary storage area for information which locates itself between the hard disk and the RAM by employing intuitive logic. It also speeds up the access time of the data.
  • CAD (Computer Aided Design)
    Software used to produce designs and drawings for architectural, engineering and scientific applications.
  • Cadmium red
    An inorganic red pigment composed of cadmium sulfide and cadmium selenide that is resistant to light, heat, and soap.
  • Cadmium yellow
    An inorganic yellow pigment composed of cadmium sulfide and lighter shades of zinc sulfide that is resistant to light, heat, and soap.
  • Calcine
    To heat a ceramic batch material to a temperature below the melting or fusion point causing loss of moisture, reduction, or oxidation.
  • Calender
    (1) A configuration of heated rollers used for flattening one or both sides of synthetic screen printing mesh; (2) To prepare sheets of material by pressure between two or more counter rotating rolls; (3) A set of cast iron rollers with highly polished surfaces situated at the dry end of a paper making machine.
  • Calender winkle
    Crease in paper web produced as the web passes through the calender rolls.
  • Calendered fabric
    Screen mesh that has been flattened on one or both sides by passing it through heated rollers.
  • Calendered film
    A film with a very glossy surface obtained by passing the film between polished rollers under pressure, and sometimes under elevated temperature conditions.
  • Calendered finished (calendered)
    Any paper with a surface glazed by means of steel or cast iron rollers with hardened surfaces.
  • Calendering
    (1) A finishing process that flattens one or both sides of a screen mesh reducing mesh thickness and opening size; (2) A way of manufacturing plastic sheets by first converting the resins into a dough like mass then passing it between heated pressure rollers to form a sheet with a glossy or textured surface; (3) A method of producing a very high gloss surface on paper stock by passing the sheet between a series of pressure rollers; (4) A finishing process for fabric creating high luster, glazing, embossing, and moiré.
  • Calibration
    To determine, check, or rectify the graduations of any instrument giving quantitative measurements.
  • Calibration bar
    A strip of tones attached to a negative, proof, or print used to check print quality.