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本文针对非击打式打印机──激光印字机的整机及关键部件的动态特性参数进行了测试，建立了一套实验系统，开发了一套DSP的硬件与软件。获得了系统模态参数数据并对它进行分析，找出它的薄弱环节。
In this paper, non-impact printer ─ ─ laser printer machine and the key components of the dynamic characteristics of the parameters were tested, set up an experimental system, the development of a set of DSP hardware and software. Obtained system modal parameter data and analyzed it to find out its weak links.