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首页> 外文会议>International Conference on Digital Printing Technologies; 20041031-1105; Salt Lake City,UT(US) >Thermal Bubble Jet Printhead with Integrated Nozzle Plate
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Thermal Bubble Jet Printhead with Integrated Nozzle Plate

机译：带有集成喷嘴板的热气泡喷射打印头

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摘要

This paper reports on a new 1/3 inch thermal bubble jet printhead with integrated nozzle plate. This new kind of printhead consists of a standard printhead substrate and a three-dimensional structured polyimide nozzle plate containing the fluidic channels and the nozzle. Furthermore the use of an adequate design of the fluidic supply is of outstanding importance to achieve high print frequencies. The integrated nozzle plate with two precise aligned structural layers is made by an advanced laser ablation process which uses both a stepping and a full-scale scanning mode. The nozzle plate is assembled with the substrate using an adhesive layer of only 3 μm thickness. The required adhesive layer thickness can be achieved by an adhesive transfer technology. In this case the alignment can be done with an accuracy of 3 μm over 1/3 inch length. Thus it is not mandatory to have a three layer system like in other commercial printheads. A further improvement concerning printing speed will be the anticipated size of one inch of the final printhead prototype. In order to assess the tolerances in assembling and aligning the nozzle plate simulations have been performed to predict the effect of misalignments or additional adhesive layers on the characteristic inkjet parameters droplet quality, volume, velocity and print frequency. Therefore a fully three-dimensional model was set up using the Volume of Fluid (VOF) method. The differences in ejected droplet volume and droplet velocity between simulation and experiment are below 5%.
机译：本文报告了一种带有集成喷嘴板的新型1/3英寸热气泡喷射打印头。这种新型的打印头包括一个标准的打印头基板和一个三维结构的聚酰亚胺喷嘴板，其中包含流体通道和喷嘴。此外，使用适当的流体供应设计对于实现高打印频率非常重要。具有两个精确对准的结构层的集成喷嘴板是通过先进的激光烧蚀工艺制成的，该工艺同时使用步进扫描和全尺寸扫描模式。喷嘴板使用厚度仅为3μm的粘合剂层与基板组装在一起。所需的粘合剂层厚度可以通过粘合剂转移技术来实现。在这种情况下，可以在1/3英寸的长度上以3μm的精度进行对齐。因此，与其他商用打印头一样，并非必须具有三层系统。有关打印速度的进一步改进将是最终打印头原型的1英寸的预期尺寸。为了评估组装和对准喷嘴板的公差，已经进行了模拟以预测未对准或附加粘合剂层对特征喷墨参数墨滴质量，体积，速度和印刷频率的影响。因此，使用流体体积（VOF）方法建立了完整的三维模型。模拟和实验之间的喷射液滴体积和液滴速度差异小于5％。

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