印刷机递纸系统是影响套印精度的关键部件，递纸牙的振动过大将造成套印不准故障。以某型印刷机递纸系统为例，用PULSE振动测试系统分别对递纸牙和该处墙板做了振动测试，得出了递纸牙和墙板的动态响应曲线，由实验结果推断出，墙板的振动过大是导致递纸牙振动过大的主要原因之一。最后对该递纸处墙板作了改进设计，分别从时域和频域方面与改进设计前进行比较，验证了该推断的正确性。本方法也可用于印刷机其他结构动态设计。

Paper-transferring mechanism is the key component influencing overprint precision; excess vibration of paper-transferring gears can cause inaccurate overprint. PULSE vibration test system was applied to test the vibration between paper-transferring gear and the wallboard of the paper-transferring mechanism of a printing press, and the dynamic response of paper-transferring gear and the wallboard was obtained. It concluded from the experiment that excessive vibration of wallboard is the main cause of the excessive vibration of paper-transferring gear. Improving design was made to the wallboard. The correctness of the inference was verified from time and frequency domain to compare the improved wallboard with original one. This method can be applied to dynamic design of other structure of printer.