Coating, Laminating, Printing

Monitoring and evaluation of nip alignment in roll-to-roll printing process using nanocomposite-based pressure sensors

By Rajarajan Ramalingame*, Kuldeep Shetty, Sarah Jobst,
Arut Prakash Kaleeshwaran, Olfa Kanoun, Technische Universität Chemnitz

Abstract. Despite the recent advancements in printing technology, the more conventional roll-to-roll printing technique is widely used because of its mass production capabilities. In a roll-to-roll printing system, the ink is transferred from the reserve to the paper by applying constant pressure on to the cylinders. If the pressure applied is not uniform over the cross-section of the cylinder the rollers could flex, causing excessive or less ink on the print surface or variation in the web tension causing wrinkling. This results in poor quality of the print material eventually leading to a material, time and money wastage.