December 12, 2016
A process used to estimate the permanence of paper or other substrate. Depending on a paper’s chemical composition, it can have varying levels of longevity. Since normal aging is not practical, procedures have
December 12, 2016
Acceptance Sampling
The evaluation and comparison of a quantity or set of materials or products to quality standards as a means of gauging their acceptability. Also known as inspection.
December 12, 2016
Acceptance Testing
In an inkjet environment, the series of documented processes, print proofs and capabilities that the software and hardware vendors participating in the inkjet solution must demonstrate at the buyer’s site before
December 12, 2016
Achromat
In photography, a camera lens which has been modified to reduce or eliminate chromatic aberration by focusing two different colors (such as blue-violet and yellow) simultaneously. Chromatic aberration, which manifests itself as a
December 12, 2016
Achromatic
Possessing no color or hue, or, in other words absorbing or reflecting all wavelengths of light in equal amounts. The term also describes a printed material that contains only black, white, and/or gray,
December 12, 2016
Achromatic Color Removal
An obsolete term for gray component replacement. See Gray Component Replacement.
December 12, 2016
Acid
A substance that yields hydrogen (H+) ions when added to a solution. Acids typically have a corrosive effect on many substances. The acidity of a solution is described in terms of pH, a
December 12, 2016
Acid Dye
A variety of colorant comprising salts of organic acids, used in the screen printing of textiles.
December 12, 2016
Acid Number
A unit used to measure the amount of potassium hydroxide (chemical formula KOH) needed to neutralize the freeacids found in oils, waxes, or resins. A high degree of acidity is undesirable
December 12, 2016
Acid Paper
A type of paper that is slightly acidic. Most paper is acid paper, since it is produced using bleaching agents, sizingmaterials (in particular, acid-rosin sizing, which is the chemical that, although
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