Glossary

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.
  • Aperture
    (1) The open area in screen printing mesh between the threads; (2) Opening in a camera lens through which light rays pass from subject to film plane to form an image.
  • Aperture percentage (mesh opening area) (percentage open area) (open area)
    The percentage of the total area of a web of screen printing mesh that is not occupied by the threads of the weave; i.e., that portion of the fabric area through which ink can pass.
  • Lens aperture
    The adjustable opening in the iris diaphragm of a camera that determines the amount of light that will pass through the lens during exposure.
  • Mesh aperture
    The space between the woven threads of screen printing mesh through which the ink passes during printing.