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The SGIA Glossary of Terms serves as an excellent industry terminology resource. It is the language by which we all communicate, without it universal understanding would be impossible. Language and our ideas about how it is interpreted change rapidly. SGIA is aware of this and continues its effort to keep our constituents well informed about changes to the increasingly complex industry terminology. The 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 SGIA assumes no responsibility for the use of information presented herein.
Used in some lacquer formulations because of low evaporation rate.
Colors that appear next to the primaries on the color wheel; different colors related by having the same base for example blues and purples are analogous.
Analysis of Variance (ANOVA)
The systematic method of statistically evaluating experimental results in order to separate the sources of variation.
Changing the perceived shape of an object in an image based on mathematically defined criteria.
Anchor coat (primer) (tie coat)
A coating applied to the face material prior to the application of a pressure sensitive adhesive, to improve bonding (or anchoring) of printed inks.
Specific adhesion of an adhesive agent to a face material or anchor coat.
Angle of attack
The angle formed by the face of the moving squeegee blade and the plane of the screen, under pressure. (Due to the flexibility of the blade, this angle generally differs from the squeegee angle, which is measured without movement or pressure).
Angle of view
That portion of a subject which is seen by the camera lens, as determined by the focal length of the lens.
Used to express the length of light waves; a standard measure of a lightwave; a unit of length equal to one hundred millionth (10-8) of a centimeter. (The visible spectrum extends from red light, 7,000 angstrom units, to violet light, which is about 4,000 angstrom units).
Synthetic dyestuff made from coal tar or its derivatives.
The temperature at which a volume of a hydrocarbon will dissolve an equal volume of aniline oil. (The aniline point is regarded as the temperature at which the mixture becomes homogeneous and is useful in evaluating solvent power).
To make or produce, so as to create the illusion of motion.
To heat a material to a predetermined temperature and slowly cooling it to relieve stress and make it less brittle, also refer to temper.
An electrochemical oxidation of aluminum to form a porous aluminum oxide surface, which can be colored and is nonconductive, non-corrosive, and resistant to abrasion.
The process of adding a protective oxide film to metal by an electrolytic process.
Acronym for Analysis of Variance.
Acronym for American National Standards Institute; formerly the American Standard Association.
The removal or softening of image rough edges (jaggies) by averaging or blending of surrounding colors.
Ink additive that breaks foaming bubbles that may occur during printing.
A coating or backing put on a film or screen mesh to prevent blurring and/or spreading of light by reflection from the film base or threads. (In screen mesh, antihalation is achieved by dyeing the fabric various shades of yellow, orange, or red).
A chemical substance that selectively reacts with oxygen to inhibit or prevent oxidation.
A natural or cream color, relatively rough finish on paper stock resulting from the use of long nap felts on the wet presses that are run with light pressure to give bulk, and with little calendaring pressure.
Chemical substances that retards skin formation on the surface of an oxidizable ink; sometimes referred to as antioxidants.
Medium which when added to the molding material or applied on the surface of the molded object, make it less conducting.
Any liquid sprayed or otherwise coated onto a surface that tends to prevent or reduce the build up of static electricity.