Abstract
The paper presents the first online thickness measurement of printed conductive silver patterns during the roll-to-roll (R2R) printing process. The thickness measurement apparatus is equipped with capacitive and eddy current sensors on a precision stage and was installed on an industrial-scale R2R printing machine. The difference in the proximal distance from the sensors to the solid surfaces of the pattern, web (PET film), and idle roller yielded the thickness information. In order to compensate for the error caused by the imperfect geometric shape of the idle roller, which amounted to ±9.4 µm, the fluctuation in the output signal from the eddy current sensors was subtracted. As a result, the thickness of the printed conductive patterns was successfully measured and compared with the offline value for evaluation. The online values showed close agreement with the offline values. Thus, the apparatus is useful for monitoring the thickness online. The printing parameters can be adaptively controlled to realize better-quality printed electronics products based on the proposed online measurement scheme.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Precision Engineering and Manufacturing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
