Abstract
In lithographic printing, ink and water (fountain solution) are brought on the press and are subjected to shear mixing at the plate cylinder nip. Therefore, the litho ink is to be more viscous and have higher yield value than that of the other divisions of printing such as typographic and gravure printing. Also emulsification characteristics in a litho ink is important for a good press performance. Many attempts have been made to explain the role played by emulsions in achieving a good ink/water ballance during printing. A minimal ink water pickup was sujested as a requirement for optimal ink peformance and for excellent print quality.
