The effect of process parameters on product quality of rotogravure printing
The effect of process parameters on product quality of rotogravure printing
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DOI：
10.1243/0954405001517595
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发表时间：
2000-01-01
期刊：
影响因子：
2.6
通讯作者：
Gethin, DT
中科院分区：
文献类型：
--
作者：
Bohan, MFJ;Claypole, TC;Gethin, DT
本文对凹版印刷工艺参数对产品质量的影响进行了实验研究。一台生产型印刷机用于测量包括战略温度、速度和卷筒纸张力在内的参数。通过运行分析来评估压榨参数的波动和产品质量。试验指出了工艺控制很重要的参数，并允许从主要试验方案中消除包括油墨干燥在内的几个参数。为主要实验选择的参数是那些最常用于控制目的的参数，或者是那些在不同打印作业之间变化的参数。使用了正交表实验，因为这些实验允许几个参数的同时变化和研究参数之间的相互作用。这些实验是使用典型的商业印刷运行进行的，一旦完成了畅销副本的生产。使用分光光度法对图像区域的打印质量进行分析。这些实验突出了该过程对油墨粘度变化的敏感性和响应的非线性。医生刀片设置也被发现是重要的，而刀片负荷和印模压力的影响可以忽略不计。在所调查的任何参数之间没有发现交互作用。对于粘度变化，对打印图像的分析证实了流体力学机制的重要性，但不可能分离出油墨稀释。对于刮刀角度设置，流体动力学行为似乎次于细胞传输和释放机制。后一种机制需要进一步调查，以便建立明确的了解。
This paper describes an experimental investigation into the process parameter effects on product quality in rotogravure printing. A production printing press was instrumented for the measurement of parameters including strategic temperatures, speeds and web tension. Through-the-run analysis was used to evaluate the fluctuation of the press parameters and the product quality. The trials indicated the parameters where process control is important and allowed the elimination of several parameters, including ink drying, from the main experimental programme. The parameters selected for the main experiments were those most often used for control purposes, or those that were varied between print jobs. Orthogonal array experiments were used, as these allow the simultaneous variation of several parameters and the investigation of interactions between parameters. The experiments were performed using a typical commercial print run once the production of saleable copy had been completed. The analysis of the print quality was carried out in the image areas using spectrophotometry. The experiments highlighted the sensitivity of the process to changes in ink viscosity and the non-linearity of the response. Doctor blade setting was also found to be important, whereas blade load and impression pressure had negligible impact. No interactions were found between any of the parameters investigated. For viscosity change, analysis of the printed image confirmed the importance of hydrodynamic mechanisms, but it was not possible to isolate ink dilution. For doctor blade angular setting, hydrodynamic behaviour appears secondary to cell transport and release mechanisms. This latter mechanism requires further investigation in order to establish a clear understanding.