Conqueror for Indigo is production treated with an active chemical to maximize the ink adhesion. ArjoWiggins has found that another chemical, the candidate compound, would improve the properties of the paper. ArjoWiggins therefore wish to replace the current compound. To strengthen the patent requirements for ink adhesion needs to be determined. A theory is developed to why chemicals with certain properties maximize the ink adhesion. Experiments are performed but the results are inaccurate. The reason for ink adhesion is still unknown. Paper treated with the candidate compound is produced in a production trial and the paper evaluated. The paper shows decreased ink adhesion compared to paper treated with current compound but gives higher whiteness, longer shelf life and the formulation is preferred by the mill due to health and safety reasons.