在计算机系统的日常使用过程中,打印机是出现故障较多的外设之一,而打印机的故障又多出在打印头上,其中的故障现象又多表现在打印针上。 明显的打印针折断、磨损等故障一般比较容易查出,但是如果当一根打印针不是折断,而是因其他 In the daily use of the computer system, the printer is one of the peripherals with more failures, and the printer malfunctions more on the printhead, and the fault phenomenon is more on the printed pins. Obvious print pin break, wear and tear and other faults are generally easier to detect, but if a print pin is not broken, but because of other