激光打印机印品质量问题分析与诊断(整理)（Analysis and diagnosis of printing quality of laser printer (arrangement)）.doc

激光打印机印品质量问题分析与诊断(整理)（Analysis and diagnosis of printing quality of laser printer (arrangement)） Analysis and diagnosis of printing quality of laser printer (arrangement) Analysis and diagnosis of printing quality of laser printer (arrangement) Laser printers are commonly used in our office equipment, it has the print speed, print clear, low noise, the printing cost is comparative economic advantages, but because of its optical, electrical and mechanical components in one complex structure, so after a period of time to failure, and laser printer printing quality fault can be accounted for more than 60% of total failure rate. Here for you to introduce the laser printer quality failure analysis and diagnosis, in order to help you in the maintenance of printers as soon as possible to find the cause of the trouble and troubleshooting. 1, all white proofs If the printing proofs are all white, the fault position and the following several reasons. (1) laser scanning system 1) laser damage; 2) optical system has obstacles; 3) mirror damage, surface aging, angle change, or too dirty; 4) the indoor humidity passes the ambassador, the drum, the multi face rotating mirror and the surface of the reflector (2) circuit 1) laser control circuit fault; 2) high voltage generator without high voltage output. (3) charging part 1) charging the damage; 2) transfer electrode damage or poor contact (4) mechanical part 1) the driving parts of the photosensitive drum are damaged, so that the photosensitive drum does not rotate 2) the main drive gear damage or pin off, so that the gear does not rotate, 2 sample Zhang Quanhei The main control circuit is out of order, so that the laser has been connected, or corona discharge electrode without high voltage. 3., writing is very weak The main reason is that: 1) the toner in the toner cartridge is about to run out. You can remove the toner cartridge and gently shake it several times, so that the toner is distributed evenly and then put back to the p