目的 通过实验设计得到胶印过程中各色版纸张不同区域的横纵变形量，为高精度印刷提供进一步的数据支持。方法 将设计好的十字线分布在纸张不同区域，然后抽取实验样张进行十字线图像采集、分色、细化、计算和数据预处理得到相关数据。结果 研究结果应用在实际中表现为生产中尽量使用纵丝缕纸，排版时将质量要求较高的版面优先安排在叼口位置。如若进行变形量补偿，需考虑各个印版的变形量不同，且各印版纸张不同位置的变形量也不同。结论 根据数据可以统计出纸张变形的总趋势，纸张上不同区域变形量的分布图，纸张叼口、中心和拖梢位置纸张变形量大小。

The work aims to obtain the transverse and longitudinal deformations on different areas of the paper of various colors in the offset printing process through experimental design, so as to provide additional data to support the high-precision printing. The properly designed cross lines were distributed on the different areas of the paper. Then experiment specimen papers were extracted for image capture, color separation, refinement, calculation and data preprocessing of cross lines to obtain relevant data. The research results could guide the practical production: longitudinal thread paper should be used in the printing process as much as possible; the layout requiring higher quality should be prioritized and put on the gripper edge in the process of typesetting; in the case of deformation compensation, the various deformations of each printing plate should be considered; meanwhile, the deformations on different areas of the papers for each printing plate were different. According to the data, the general trend of the paper deformation, the deformation distribution map on different areas of the paper and the deformation size of gripper edge, central part and tail of the sheet can be calculated out.