Stabilizing meniscus shape to improve pattern uniformity in Drop-on-demand EHD inkjet printing using visual feedback
Stabilizing meniscus shape to improve pattern uniformity in Drop-on-demand EHD inkjet printing using visual feedback
复制标题
使用视觉反馈稳定弯月面形状以提高按需滴 EHD 喷墨打印中的图案均匀性
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Jungkeun Park
中科院分区：
文献类型：
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作者：
Trung‐Kien Nguyen;V. Nguyen;D. Byun;Jungkeun Park
提出了一种利用视觉反馈算法稳定弯月面形状以提高图案均匀性的电流体动力学（EHD）印刷方法。控制EHD喷墨打印的喷嘴和基底之间的施加电压，以防止弯液面在其喷射期间波动。通过CCD摄像机捕获弯月面形状，并通过弯月面检测算法进行分析，以评估其形状和实施反馈控制所需的喷射状态。实验结果表明，与开环喷射相比，反馈式乙醇电流体力学打印过程中的弯月面更加稳定。
This paper presents a method for Electrohydrodynamic (EHD) printing to improve the uniformity of the patterns by stabilizing the meniscus shape of liquid using a visual feedback algorithm. The applied voltage between the nozzle and substrate of EHD inkjet printing is controlled to prevent meniscus from fluctuating during its ejection. The meniscus shape is captured by a CCD camera and analyzed by a meniscus detection algorithm to evaluate its shape and jetting status that are required to implement feedback control. The experiment results show that the meniscus during EHD printing of Ethanol with feedback is much more stabilized compared with the case of open-looped jetting.