目的 测试分析不同油墨在承印物表面的润湿性，为印刷过程中油墨在承印物上的附着研究提供理论参考，从而提高凹版印刷的精度和印刷效果。方法 以表界面润湿现象、经典润湿模型、挥发干燥和渗透干燥机理为理论基础，探究油墨在纸张表面的润湿行为，研究不同水性油墨在不同纸张表面上的静态、动态接触角的变化规律，分析油墨墨滴在纸张上的墨痕形状以及油墨黏度与纸张平滑度对纸张润湿效果的影响。结果 纸张平滑度、油墨黏度的增加，可促进油墨在纸张上静态接触角和承印物被完全润湿的时间的增加，墨痕形态受润湿性影响。结论 纸张平滑度、油墨黏度与油墨在纸张上的润湿性呈负相关关系。

The work aims to provide theoretical reference for the adhesion of ink on the substrate during the printing process by testing and analyzing the wettability of different inks on the substrate surface, thereby improving the accuracy and printing effect of gravure printing. Based on the surface wetting phenomenon, classical wetting model, volatilization drying, and permeation drying mechanism, the wetting behavior of ink on paper surfaces was explored, the changes in static and dynamic contact angles of different water-based inks on different paper surfaces were investigated and the shape of ink droplets on paper and the effect of ink viscosity and paper smoothness on the wetting effect of paper were analyzed. The increase in paper smoothness and ink viscosity promoted an increase in the static contact angle of ink on paper, as well as the time for the substrate to be completely wetted. The morphology of ink marks was affected by wettability. The smoothness of paper, the viscosity of ink, and the wettability of ink on paper are negatively correlated.