Testing Methods for Litho Offset Plates and Their Compatibility with the Process

Lack of relevant testing methods for litho offset plates complicate the choice of plate for a given process. In this study more than a dozen well-known plate brands and a few new makes were tested for mechanical, physico-chemical, optical and printability properties in laboratory conditions and on pilot scale using some new techniques. Based on the results, a test routine, including running life and lithographic properties, is introduced for the plate control. Based on the results, a test routine, including running life and lithographic properties, is introduced for the plate control.