The influence of aspect ratio of dots on ink transfer in gravure printing using conductive ink

The pattern shape engraved on the gravure printing roll is one of the most important factors influencing ink transfer. This study is focused on the relations between dot geometry engraved on gravure printing roll and the ink transfer during the gravure printing process. The influence of dot width on printed patterns will be demonstrated. Results reveal that as the width of a dot on the printing roll increases, the ink transfer rate also increases. But over a certain size of width, surface uniformity began to recede. Therefore, proper dot geometry on the printing roll should be decided to guarantee good printing quality according to printing conditions and expected performance of the electronic devices.