Design of multi-purposed roll-to-roll printing system for printed electronics

Compact-sized printing machine with the capability of various printing methods in one printing unit is proposed. The printing method is changeable to gravure, gravure-offset, or flexo by alternating the web path and printing rollers. The machine also has multiple printing units with register control for the multilayer printings. The developed machine is used for the fabrication of printed electronics devices by using the several printing methods, and for the optimization and evaluation of inks.