8. Viscosity – This describes the degree of fluidity of a liquid ink as far as printing is concerned. Viscose means the thickness. A high viscose ink means the ink is thicker and does not freely flow. Each variety of ink is made in different viscosity to suit the process and the substance or Paper for which it is intended. The Ink meant for Letterpress printing may not be suitable to Offset printing and vice verso.
9. Volatility: The property of the liquid in the ink that will evaporate during the process of drying after printing will show how volatile the solvent used is . While the spirits, alcohol etc used in Plate making for developing the Photo polymer processes are highly evaporating liquids, the solvents added with the ink for drying are slightly slower in evaporation. In the ink making process the volatility of the solvent which is used as assisting carrier medium is an important consideration in the manufacture of a printing ink that has been formulated to dry by evaporation process
10. VOC: This term is abbreviation of Volatile Organic Compounds some of the petroleum product derivatives used as the vehicles for the printing inks manufactured for different process of printing.
alphabet V to be continued under V/2