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首页> 美国卫生研究院文献>Micromachines >Design and Characteristic Analysis of a MEMS Piezo-Driven Recirculating Inkjet Printhead Using Lumped Element Modeling
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Design and Characteristic Analysis of a MEMS Piezo-Driven Recirculating Inkjet Printhead Using Lumped Element Modeling

机译：基于集总模型的MEMS压电驱动循环喷墨打印头设计与特性分析

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摘要

The recirculation of ink in an inkjet printhead system keeps the ink temperature and viscosity constant, and leads to the development of a high-performance device. Herein, we propose a recirculating piezo-driven micro-electro-mechanical system (MEMS)-based inkjet printhead that has a pressure chamber, a nozzle, and double restrictors. The design and characteristic analysis are performed using a two-port lumped element model (LEM) to investigate the effect of design parameters on the system responses. Using LEM, the jetting pressure at the pressure chamber, velocity at the nozzle inlet, meniscus pressure, and Helmholtz resonance frequency are predicted and the comparative analysis of the jetting pressure and velocity between LEM and the finite element method (FEM) simulation is conducted to validate our proposed LEM method. Furthermore, the effect of a change in major design parameters on the jetting pressure, velocity, and Helmholtz resonance frequency is analyzed. On the basis of this analysis, the optimized device dimensions are finalized. From our analysis, it is also concluded that the restrictor is more sensitive than the pressure chamber in terms of their variations in depth. As the cross-talk effect can occur due to an array of hundreds or thousands of nozzles, we investigated the effect of a single activated nozzle on the non-activated neighboring nozzles, as well as the effect of multi-activated nozzles on a single central nozzle using our proposed LEM.
机译：喷墨打印头系统中的墨水再循环可保持墨水温度和粘度恒定，并导致开发出高性能的设备。本文中，我们提出了一种基于循环压电驱动微机电系统（MEMS）的喷墨打印头，该打印头具有压力室，喷嘴和双限流器。使用两端口集总元件模型（LEM）进行设计和特性分析，以研究设计参数对系统响应的影响。使用LEM预测压力室的喷射压力，喷嘴入口的速度，弯液面压力和亥姆霍兹共振频率，并对LEM的喷射压力和速度与有限元方法（FEM）模拟进行比较分析，以得出验证我们提出的LEM方法。此外，分析了主要设计参数的变化对喷射压力，速度和亥姆霍兹共振频率的影响。在此分析的基础上，确定了优化的设备尺寸。从我们的分析中还可以得出结论，就其深度变化而言，限流器比压力室更为敏感。由于串扰效应可能是由于成百上千个喷嘴阵列而发生的，因此我们研究了单个激活喷嘴对非激活相邻喷嘴的影响，以及多重激活喷嘴对单个中央喷嘴的影响。喷嘴使用我们建议的LEM。

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