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The Effects of Corona Treatment on Impact and Spreading of Ink-jet Drops on a Polymeric Film Substrate

机译:电晕处理对聚合物膜基材上喷墨滴的冲击和扩散的影响

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The effects of varying corona surface treatment on ink drop impact and spreading on a polymer substrate have been investigated. The surface energy of substrates treated with different levels of corona was determined from static contact angle measurement by the Owens and Wendt method. A drop-on-demandprint-head was used to eject 38 jim diameter drops of UV-cwable graphics ink travelling at 2.7 m/s on to aflat polymer substrate. The kinematic impact phase was imaged with a high speed camera at 500k frames per second, while the spreading phase was imaged at 20k frames per second. The resultant images were analyzed to track the changes in the drop diameter during the different phases of drop spreading. Further experiments were carried out with white-light interferometry to accurately measure the final diameter of drops which had been printed on different corona treated substrates and UV cured. The results are correlated to characterize the effects of corona treatment on drop impact behavior and final print quality.
机译:已经研究了不同电晕表面处理对墨滴冲击和在聚合物基材上铺展的影响。通过Owens and Wendt方法通过静态接触角测量确定了用不同电晕水平处理过的基材的表面能。使用按需滴印头将以2.7 m / s速度行进的38毫米直径的UV可固化图形油墨滴到平坦的聚合物基材上。运动冲击阶段用高速相机以每秒500k帧成像,而扩散阶段以每秒20k帧成像。分析所得图像以追踪液滴散布的不同阶段期间液滴直径的变化。用白光干涉仪进行了进一步的实验,以准确测量已印刷在不同电晕处理过的基材上并经过UV固化的液滴的最终直径。结果相关联以表征电晕处理对墨滴撞击行为和最终印刷质量的影响。

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