A Low-Cost Flash Photographic System for Visualization of Droplets in Drop-on-Demand Inkjet
A Low-Cost Flash Photographic System for Visualization of Droplets in Drop-on-Demand Inkjet
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DOI：
10.2352/j.imagingsci.technol.2018.62.6.060502
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发表时间：
2018-11-01
影响因子：
1
通讯作者：
Tan, Hua
中科院分区：
文献类型：
--
作者：
Jiang, Huicong;AndrewMerritt, Brett;Tan, Hua
闪光照相技术在成本和图像质量方面具有明显的优势，被广泛应用于按需喷墨中液滴动力学的研究。然而，通常包括安装平台、闪光光源、喷墨系统、CCD相机、放大透镜和脉冲发生器的整个设置仍然花费数万美元。为了降低DoD喷墨液滴可视化的成本，我们建议在闪光照相系统中用低成本的微控制器板取代昂贵的专业脉冲发生器。通过示波器测量微控制器的时间精度。通过跟踪大量液滴位置，将微控制器的时间稳定性与专业脉冲发生器进行了比较。为了验证整个装置的有效性，液滴喷射和液滴对硅片的冲击进行了定量分析，并与理论预测进行了比较。最后，从商业喷墨墨盒喷出的液滴的样本图像，以显示该系统的灵活性。(C)2018影像科学与技术学会。
Flash photography has been widely used to study the droplet dynamics in drop-on-demand (DoD) inkjet due to its distinct advantages in cost and image quality. However, the whole setup, typically comprising the mounting platform, flash light source, inkjet system, CCD camera, magnification lens and pulse generator, still costs tens of thousands of dollars. To reduce the cost of visualization for DoD inkjet droplets, we proposed to replace the expensive professional pulse generator with a low-cost microcontroller board in the flash photographic system. The temporal accuracy of the microcontroller was measured by an oscilloscope. The microcontroller's temporal stability was compared with a professional pulse generator by tracking a large number of droplet positions. To validate the effectiveness of the whole setup, the droplet ejection and the droplet impact on a silicon wafer were quantitatively analyzed and compared with theoretical predictions. Finally, sample images of droplet ejected from a commercial inkjet cartridge were presented to show the flexibility of the system. (C) 2018 Society for Imaging Science and Technology.