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Adhesive Ink, fluid or paste of various colours, but us […]
Adhesive Ink, fluid or paste of various colours, but usually black or dark blue, used for writing and printing. It is composed of a pigment or dye dissolved or dispersed in a liquid called the vehicle.
Adhesive Ink is a dispersion of carbon black in water; the suspension is stabilized with various substances, including shellac in borax solution, soap, gelatin, glue, gum arabic, and dextrin. It is used mainly for drawing.
The Chinese experimented with printing at least as early as ad 500, with inks from plant substances mixed with coloured earths and soot or lampblack. When Johannes Gutenberg invented printing with movable type in Germany in about 1440, inks were made by mixing varnish or boiled linseed oil with lampblack. For more than 300 years such inks continued to be used with little modification in their composition.
Modern printing inks are usually less fluid than writing inks. The composition, viscosity, density, volatility, and diffusibility of ink are variable.
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