喷印工艺控制参数对水性油墨墨滴形态的影响

目的为了提高水性油墨的喷墨印刷质量,通过控制喷印工艺参数以获得良好的墨滴形态。方法分析喷印工艺控制的关键参数以及墨滴形态的表征参数,通过单因素工艺参数对墨滴形态影响的实验,分析电压、点火频率和脉冲宽度对墨滴形态各评价指标的影响程度,并运用AHP法构建墨滴形态的质量分析模型;通过多因素工艺参数组合对墨滴形态影响的正交实验,分析各工艺参数与墨滴形态参数之间的关联性,并结合质量评价模型综合评判喷印工艺参数对墨滴形态的影响。结果喷印工艺参数电压、点火频率和脉冲宽度共同影响墨滴形态的质量,脉冲宽度对其影响最大,点火频率次之,电压的影响程度最小,其权重分别为0.462,0.272,0.266。结论水性油墨喷印工艺中,通过合理地控制喷印工艺的关键参数,可以有效地提高墨滴形态质量,从而获得良好的印刷品质量。

Effect of Controlling Ink-jet Printing Process Parameters on Shape and State of Water-based Ink Drop

The paper aims to improve the ink-jet printing quality of water-based ink, and obtain good ink droplet shape by controlling the process parameters of ink-jet printing. The key parameters of ink-jet printing process control and the characterization parameters of ink droplet morphology were analyzed. The influence of voltage, ignition frequency and pulse width on the evaluation indexes of ink droplet morphology was analyzed through the experiment of single factor process parameters on ink droplet morphology. The quality analysis model of ink droplet morphology was constructed by AHP method. The orthogonal experiment of the influence of multi-factor process parameters on the combination of ink droplet morphology was carried out. The correlation between the process parameters and the morphological parameters of ink droplets was analyzed, and the influence of the process parameters on the morphology of ink droplets was comprehensively evaluated with the quality evaluation model. Voltage, ignition frequency and pulse width jointly affected the quality of ink droplets. Pulse width had the greatest influence on the quality of ink droplets, followed by ignition frequency and voltage, with weights of 0.462, 0.272 and 0.266, respectively. In the waterborne ink ink-jet printing process, the shape quality of ink droplets can be effectively improved by controlling the key parameters of the ink-jet printing process reasonably, and good printing quality can be obtained.