A substance that yields hydroxyl (OH-) ions when added to a solution. Alkalis typically have a caustic effect on many substances. The alkalinity of a solution is described in terms of pH, a …
Alkali Blues
A series of organic color pigments used in printing inks. Alkali Blues”] and Reflex Blues (‘CI Pigment Blue 56 No. 42800′, CI Pigment Blue 18 No. 42770, and CI Pigment Blue 61 No. 42765:1’) are the …
Alkali Resistance
A property of paper describing its ability to resist fading, discoloring, or deteriorating when exposed to alkaline (low-pH) substances such as soaps and adhesives. Alkali resistance is an important property …
Alkaline Paper
A type of paper having a pH higher than 7. Most paper is acid paper, since it is produced using bleaching agents,sizing materials, and coatings that impart to the paper a degree of acidity. The primary …
Alkyd
Any of a variety of synthetic resins used in the manufacture of printing inks, produced by reacting one of several dicarboxylic acids (such as phthalic or maleic acid) with a polyhydric alcohol such as …
All Points Addressability
In computer graphics, any array of pixels (or a bit map) in which each specific pixel (be it on a computer screen or on an output device) can be individually manipulated. In …