文章摘要
郭献军.卷筒纸印刷中张力与套准关系的研究[J].包装工程,2014,35(7):133-138.
GUO Xian-jun.The Relationship between Tension and Register in Web Printing[J].Packaging Engineering,2014,35(7):133-138.
卷筒纸印刷中张力与套准关系的研究
The Relationship between Tension and Register in Web Printing
投稿时间:2013-12-20  修订日期:2014-04-01
DOI:
中文关键词: 卷筒纸印刷  印刷张力  套准  纸张变形
英文关键词: web offset printing  printing tension  register  paper deformation
基金项目:
作者单位
郭献军 广州日报报业经营有限公司, 广州 510121 
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中文摘要:
      目的 通过在不同张力条件下,对四色印刷的纸张横向变形量和纵向变形量进行分析研究,获得卷筒纸印刷中张力与套准偏差的关系,进而得到实际印刷中最佳的印刷张力范围,指导印刷实践。方法 在实际印刷生产中,在各色印版上指定位置设定多个纸张变形量检测图标,在不同的印刷张力进行印刷,利用 CCD 成像和图像处理技术对印刷到纸上的各色图标进行信号采集、图像处理和数据分析,获得各色印刷中各个位置图标的横向扩散、纵向扩散与印刷张力的关系曲线。 结果 实验获得数据及关系曲线与理论分析基本吻合,该实验过程和研究方法可作为生产质量管理的有效手段。 结论 卷筒纸印刷中,张力较小时,纸张的横向和纵向套准偏差与张力变化保持线性关系,随着张力的增加,纸张横向变形将减小并趋于左右均衡,图文纵向位置将趋于稳定,纵向套准波动减小。 张力超过某一临界值后,张力变化对套准偏差的影响很小,适于进行印刷套准的补偿和控制。
英文摘要:
      Objective Under different tensions, the paper lateral and vertical diffusions of the 4-color printing were analyzed. The relationships between the printing tension and the register offset were obtained. Then the best printing tension range in printing practice was obtained, which can guide the actual printing. Methods The register marks were set in the specified position of the 4-color plates to detect the paper deformation. The printing process was operated under different tensions. Using CCD camera and image processing techniques, the image of register marks on the printed paper was picked, processed and analyzed to obtain the relationship curves between the lateral diffusions, vertical diffusions and printing tensions. Results The experimental results and curves were matched with the theoretical analysis. The experiment and research methods can be used as an effective method of production and quality management. Conclusion In web printing, when the tension was small , the lateral and vertical register offsets maintained a linear relationship with the tension. As the tension increased, the lateral diffusion and the vertical position tended to decrease and then became stable. When the tension exceeded a critical value, the effect of the tension change on the register offset was smaller, which is suitable for printing offset compensation and control.
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