Influence of Ink Components on Print Rub, 2008 Advanced Coating Fundamentals Symposium

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In this work a series of model inks with detailed information of the components has been prepared in order to study the influence of the ink formulation components on the degree of print rub. The ink-coating interactions of these model inks and two matte coatings are probed with ISIT (Ink Surface Interaction Tester) and print rub is investigated with a modified ISIT and Prüfbau Quartant. Additionally, print quality, gloss and ink density, are evaluated. The results imply that the higher the total ink solids content the greater the occurrence of print rub. Wax addition, especially PTFE wax, aids in creating an ink formulation which is more resilient against print rub. A high amount of linseed oil in an ink applied on slow setting paper coating has a negative influence on print rub. The step behavior observed during tack decay in ISIT curves of the model inks is linked to oil-latex interactions.