对凹版胶印中油墨转移过程进行了分析，并且针对油墨剪切力建立了理论模型。印刷方向与印刷线条方向的夹角增大会导致剪切力的减小，从而减小油墨的转移量，且线宽越小受这种影响就越大。使用30 μm和80 μm两种线宽进行实验，以验证印刷夹角对剪切力和油墨转移的影响。结果表明，印刷导线的横截面积随着印刷夹角的增大而减少，且30 μm线宽的印刷导线受印刷夹角的影响更大一些。通过分析实验数据对理论模型进行了优化，进一步提高了模型的精度。

The ink transfer process was analyzed and a shear force model was established. The shear force decreases when the angle between printing direction and the printed line increases. This effect is more significant when thin lines are printed. Lines with width of 30 and 80 micrometers were printed to verify the shear force model. The result showed that the cross sectional areas of printed lines decrease when the print angle increases, and the 30-micrometer-wide lines suffer more from this effect. The model was optimized based on experiment result to improve its accuracy.