Study of Colour Shift due to Aqueous Coating on various Coated Substrate in Offset Printing

Offset printing is widely-used method in the printing industry for printing numerous jobs on wide varieties of substrates. Now a days, aqueous coatings are the popular post-printing process which is employed to improve the durability, appearance and tactile properties of printed materials. However, the interaction between these coatings and different paper substrates can result in varying degrees of colour shifts, impacting the final print quality. Colour shift expressed as ΔΕ value is the significant mismatch and crucial aspects while evaluating accuracy of colour while printing. This study investigates the colour shift outcomes of aqueous coatings on various paper media printed using offset printing technique. This analysis provides valuable insights for printers, guiding for the selection of appropriate paper and coating combinations to achieve desired print enhancements.