Today’s printing inks are composed of a pigment a binder (an oil, resin or varnish of some kind), a solvent and various additives such as drying and chelating agents. The exact recipe for a given ink depends on the type of surface that it will be printing on and the printing method that will be used. Inks have been designed to print on a wide range of surface metals, plastics and fabrics through to papers. Different inks are produced to suit these different conditions.
Printing inks are made of four basic components:
- Pigments – to colour the ink and make it opaque
- Resins – which bind the ink together into a film and bind it to the printed surface
- Solvents – to make the ink flow so that it can be transferred to the printing surface
- Additives – which alter the physical properties of the ink to suit different situations
Keywords: pigment, Resins, Additives.