ink

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ink,

pigmented fluid used for writing and drawing, or a viscous compound used for printing, both of various colors but most frequently black. The oldest known variety, India ink or China ink, is still used in China and Japan for writing with small brushes instead of pens. All inks are composed of a colorant, a vehicle, a solvent, and additives; the colorant for India ink is carbon black, and the vehicle is water; various substances including glue and gum are used to stabilize suspension. Because of its rich blackness and permanence, India ink is used extensively by architects, engineers, and artists. In many early civilizations dyes obtained from plants, and sepia from the squid, octopus, and cuttlefish, were used as ink. The black and blue-black inks used today, composed of copperas (ferrous sulfate), gallic and tannic acids, and a preservative, were probably known as early as the 2d cent., the acids then being derived from oak or nut galls. Numerous master drawings made with ink containing the acids of gallnuts have been corroded by the ink itself. These inks, and also the colored inks used today, contain aniline and other soluble dyes instead of holding their pigments in suspension; they are accordingly filterable and flow easily even through ball-point pens. Felt-tip markers contain organic compounds in solution. The glutinous inks used by printers owe their various viscosities to such ingredients as linseed oil, synthetics of the alkyd type, mineral oil, and petroleum fractions. This reliance on hydrocarbons has raised concern about pollution, and led to the development of several alternatives: vegetable–based inks; toluene–based inks so that the solvent can be recovered; and water–solvent inks. Marking inks used to mark linen are composed of a salt of silver. Indelible or incorrodible ink is used for writing that is exposed to the weather or to strong acids or alkaline solutions. Fluorescent inks are used in printing maps to be read at night. The liquid in the ink used in newspaper printing is absorbed into the paper, while in many other sorts of ink the liquid evaporates leaving the pigment above the paper surface.

ink

[′iŋk]
(materials)
A dispersion of a pigment or a solution of a dye in a carrier vehicle, yielding a fluid, paste, or powder to be applied to and dried on a substrate; writing, marking, drawing, and printing inks are applied by several methods to paper, metal, plastic, wood, glass, fabric, or other substrate.

ink

a dark brown fluid ejected into the water for self-concealment by an octopus or related mollusc from a gland (ink sac) near the anus
References in periodicals archive ?
Maintenance staff accidentally left a small opening in the top of his tank, and Inky made a break for it.
I am thrilled to have Inky Johnson speak during the Commissioners Luncheon.
A sombre hue pervaded everything; the water in the canal was inky, the houses of different shades of black, and the population too, from dirt and smoke, had decidedly dusty complexions.
It reminded me of my own observations of the Trifid in 2010 and 2011 under the crystal clear and inky black skies of the Atacama Desert in Chile.
Workers arrived one morning to find Inky, an octopus, missing from his tank
Her palette of metallics against inky charcoals and rich chocolates elevates wispy-modern motifs.
WHEN business figures are asked to name their heroes, they tend to plump for inspirational leaders or marauding captains of industry; me, I prefer Inky and Cha-Cha.
Give the cat a home Name: Inky and Blue Age: 10 This pair are looking for a quiet home and loving owners.
8Da followed YESTERDAY'S SOLUTIONS WEE THINKER ACROSS: 7 Earmark 9 Nepal 10 Tread 11 Trellis 12 Peg 13 Rehearse 16 Confined 17 Age 19 Chianti 21 Aisle 22 Flair 23 Knowing DOWN: 1 Red tape 2 Arpeggio 3 Lard 4 On remand 5 Opal 6 Clash 8 Kitchen sink 13 Refinery 14 Sealskin 15 Revenge 18 Scoff 20 Ivan 21 AWOL QUICKIE ACROSS: 1 Accompanist 8 Are 9 Lit 11 Vinegar 12 Opera 13 Eat 14 Del 15 Knocked 17 Tar 19 Inky 21 Inch 23 Dupe 25 Semi 27 Tom 29 Bequest 31 Irk 34 Pro 36 Tonic 37 Squalid 38 Hoe 39 Any 40 Fell-walking DOWN: 1 Aria 2 Cent 3 Organic 4 Piracy 5 No-one 6 Sled 7 Tire 8 Avert 10 Tally 16 Dip 18 Rim 20 Net 22 Nib 24 Unstuck 25 Smith 26 Russia 28 Moody 30 Excel 32 Roof 33 Knee 34 Plan 35 Ring
Blinky, Pinky, Inky and Clyde appear in which arcade and video game?
The rich and mighty, represented by Vidame Inky and her family, live comfortably in Lumino; the poor, exemplified by the renegade Tropang Gising, struggle in Diliman.
Enchanted Forest: An Inky Quest And Colouring Book, Johanna Basford 7.