In his first article, which was published in issue five of this journal, author Karel Schell reviewed a number of ink properties and components, such as viscosity, pigments and agents. These were subsequently linked to the specific properties of offset inks. This article takes a closer look at intaglio and screen inks, and reviews the properties of OVI. Karel Schell holds a physics degree from Delft University. Karel moved to security printer Joh. Enschedé (the Netherlands) in 1977 and joined the board in 1988. In April 1993, he established his own independent techno- logical consultancy, enabling him to share his technological expertise and experience with a diversity of customers in Europe, Canada, the US, Africa and the Far East.