Ink is a liquid or paste that contains pigments or dyes an is uised tae colour a surface tae produce an image, text, or design. Ink is uised for drawin or writin wi a pen, brush, or quill. Thicker inks, in paste furm, are uised extensively in letterpress and lithographic printin.
Ink can be a complex medium, componed o solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescers, an ither materials. The components o inks serve mony purposes; the ink’s carrier, colorants, an ither additives affect the flow an thickness o the ink an its appearance when dry.