打印机是计算机的重要外部设备,断针现象在打印机故障中并不少见,这在有图形输出及其它一些应用中是不允许的。以前我们都是把打印头拆下来仔细查找出断针后再进行更换,这样既费时又不很准确。在工作实践中,笔者用大众语 Printers are important external devices in computers. Broken pins are not uncommon in printer problems, which are not allowed with graphics output and other applications. We used to remove the print head to carefully find the broken needle and then replace it, so that it is both time-consuming and not very accurate. In the work of practice, I use the language of the public