laser printer maintain manual.

how to maintain a laser printer.

Although many models of laser printers , but because it works and materials used are basically the same, but some specifications is different , so, for general maintenance of laser printers , are all suitable for a variety of laser printers, but there are some special the difference only.

1 wire maintenance

Because of residual toner inside the printer , dust and scraps of paper and other debris, charging , transfer, separation and elimination electrode wire will be contaminated , the voltage drop , which will affect the normal work performance. In general, if the charge transfer electrode wire soiled waste toner , paper dust , etc., will print out enough ink printed pieces , or even very pale , this is mainly due to the charge on the drum after the wire is dirty enough Therefore, the voltage of the latent image on the drum it produces insufficient suck less toner , leaving contaminated wire transfer voltage is not enough, when the paper through the contact paper and toner cartridges is not tight enough , leaving the transfer to the paper the toner is not enough , so will the output of the pattern is too light . In addition , the transfer wire ( slot ) pollution also causes the output pattern on the back of dirt, because when you have to go through the transfer pattern output wire slot. The elimination of pollution will cause the electrode to poor separation of paper jams and other faults , eliminate pollution will cause the electrode on the residual toner cartridge cleaning is not clean , so that the output of a serious pattern of bottom ash . Maintenance should carefully remove the wire electrode wire assembly ( Some printer models do not have to remove the machine wire , can be cleaned directly on the machine ) , the first brush with the brush attachment on the foreign body , and then after their cotton flower carefully and gently wipe clean.

2 Maintenance laser scanning system

When the laser scanning system and the various working laser lens is dust and other pollutants , will cause increased bottom ash prints , picture unclear. Available cotton flower will wipe them clean, but be careful not to change their original location or to break something .

3 fuser maintenance parts

Fuser maintenance of the main part of the fixing heater roller ( including rubber roller ) , separation claw , thermistor and thermal switch .

Maintenance of the fixing 

( 1 ) of the fixing roller of the heating roller may be heated glue layer after long-term use of toner , in general, the heating roller surface should be very clean , if dirty, then it will affect the printing . If you print out proofs appear black block , black bars , as well as the graphic toner stick taken away, which means the heat roller surface has been or injury, if minor, can be used after cleaning ( but not for lost parchment paper ) , if serious , only replace the heating roller . Paired with the heating roller rubber roller , also after long-term use glue Feifen , generally will not affect the output results when compared with a slight , but if severe, causes the output of the comp back dirty . When cleaning the heating roller and a rubber roller , cotton flower dipped in ethanol available and carefully wipe clean. But not too hard to wipe the heat roller , do not use more blades and sharp objects to scratch , to avoid damage to the fuser heating roller . And wipe the rubber rollers can be simpler , simply wipe the surface clean.

( 2 ) thermal resistance and thermal switches thermistor and thermal maintenance switches are close to the heating roller member early laser printer near the heat roller mounted on the central portion , then improve the heating roller is mounted in the the two, both members usually need a lot to maintain, but to use a longer time ( output is larger ) printer , because the thermistor shell ( outer shell ) will pick up the waste toner , and some dirt on the impact its temperature sensor to sense the heat roller Wen Fasheng changes , so that the surface temperature of the heating roller is increased, which will affect the life of the first hot roller , aging and accelerated wear of the separation claw rubber roller member , plus large preheating time, thereby reducing the service life of the fixing tube . Secondly, the temperature is too high will affect the output of the paper curl , causing a paper jam , and sometimes even make sulfuric acid paper , coated paper , such as blistering and can not be used. Even cause serious burn when heated roller .

Maintenance approach is to carefully remove the fuser , remove the thermistor and thermal switches , some with cotton dipped in alcohol to wipe clean its shell of dirt , the operation must be careful not to damage its shell . Then carefully put it back , be sure to pay attention to the distance and the heat roller thermistor installed when the temperature is too high so as not to damage components. Generally, you want to try to contact thermistor abutting heated rollers, thermal switch may be appropriate open space some distance away .

4 photoelectric sensor maintenance

Photoelectric sensor is contaminated , it will cause the printer to detect failure. If the manual feed sensor after being contaminated , the control system can not detect the printer has no paper signal , manual feed function will fail . Therefore should be used to wipe the cotton flower associated surface of each sensor clean, keep them clean , and always have the sensor sensitivity.

5 cartridges maintenance

Laser printer toner cartridges for organic silicon photoconductor , there is work fatigue, therefore , continuous working time can not be too long , if the output is large , may, after working for some time to stop and rest for a while and then continue output. Some users to work alternately with two cartridges , but also a way . As for cartridge maintenance , and can thus be :