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.
  • Nibs
    Small sharp tip or point of foreign material which project above the surface of an applied ink film.
  • Nigrosine
    Very deep blue or black coal tar dyestuffs.
  • Nip point
    The point of contact between two in-running rollers.
  • Nippers
    Small scissors like cutting tool for trimming thread.
  • Nitrocellulose
    A film forming material produced by the treatment of cotton or wood fibers with nitric acid, and widely used in lacquer type inks made for screen printing.
  • Nitrocellulose laquers
    Screen printing inks or coatings made by combining nitrocellulose with suitable vehicle, pigments, solvents and drying agents.
  • Nitrocellulose screen printing ink
    Pigmented ink composed of nitrocellulose, film former, plasticizer, and high boiling solvents, similar to nitrocellulose lacquer except for high boiling solvent and increased pigment loading with more plasticizers.
  • Nitrogen blanket
    An inert atmosphere created by introducing nitrogen gas into a UV curing chamber, to counter oxygen inhibition of curing reaction.
  • Noise
    An unwanted random and persistent disturbance that obscures or reduces the clarity or quality of a signal; a distortion of an image’s analog signal.
  • Nomenclature
    Descriptive words.
  • Nomex
    DuPont trade name for a temperature resistant flame retardant nylon.
  • Nominal
    A measurement that is a designation or theoretical size that may vary from the actual.
  • Nominal value
    The prescribed value or capacity of an electronic component.
  • Nominal weight
    The basis weight of paper with a fluctuation tolerance of five percent.
  • Nonactinic
    Light rays that do not affect sensitized surfaces within a reasonable time.
  • Nonblocking
    An applied adhesive film that will not adhere to another surface under stacking conditions.
  • Non-correlated noise
    A random distortion in an analog signal causing snow, speckles, or random spots throughout an image.
  • Non-drying oils
    Those oils used in vehicles which do not form dry surface films when exposed to atmosphere.
  • Nonflammable
    Any substance that does not support combustion.
  • Non-image areas
    Portion of mechanical, negative, or screen that will not print.
  • Nonimpact printer
    Any device that reproduces an image without striking the substrate, such as ink jet, laser, and xerographic printing.
  • Non-impact printer
    A printing device that creates images on a substrate without striking it such as ink jet, photo copier, and laser printing device.
  • Non-Newtonian
    Substances such as fluids that have an apparent viscosity (generally, screen printing inks are considered non-Newtonian fluids).
  • Non-oriented film
    Film that has not been subject to stress to align the polymer chains and improve properties.
  • Non-polar solvents
    Aromatic and hydrocarbon solvents that have low dielectric constants.