Laser printer maintenance

Although many models of laser printers, but because of its working principle and the use of the materials are basically the same, but some different specifications, so, for the general maintenance of laser printers, are all working for a variety of laser printers, but there are some special the only difference.

1. Electrode wire maintenance

Because there are remnants of printer toner, dust and scraps of paper and other debris, charge, transfer, separation and elimination electrode wire will be contaminated, the voltage drop, which affect the normal performance. In general, if the charge transfer electrode wire soiled Feifen, burning parchment, etc., will print out enough ink printed pieces, or even very short, mainly due to electrode wire dirt on the charge after the cartridge shortage , so it generated in the toner latent image on the voltage is not enough and enough ink absorption, transfer of contaminated Ershi voltage electrode wire is not enough, then walked to the paper when the paper contact with the cartridge is not close enough, Er Shi transfer toner to the paper is not enough, so will the output of the pattern ink is too light. In addition, the transfer electrode wire (slot) pollution serious cases will make the output of pattern on the back of dirt, because the output pattern to go through a transfer electrode wire slot. The pollution of the electrode will eliminate paper jams caused by poor separation of such failure,

Eliminate pollution of the electrode on the residual toner cartridge will not clean sweep, the output of the pattern bottom ash serious. Maintenance should be careful to remove the electrode wire electrode wire components (some printer models do not have to remove the machine wire electrode can be cleaned up directly in the machine), his first brush with a brush attached to the foreign body, after the re-use cotton flower to Gently wipe clean carefully.

2. Laser scanning system maintenance

When the laser scanning system of lasers and mirrors all work to be dust and other pollutants, will result in increased bottom ash prints, image unclear. Used them to wipe clean, cotton flower, but it should be careful not to change their original position or to break something.

3. Fuser maintenance parts

Fuser main part of the maintenance fuser heating rollers (including rubber roller) and the separation claw, thermal resistance and thermal switches.

(1) Fuser Roller maintenance of heating

Fuser heat roller in the long-term use may glue a layer of toner will, in general, the heating roller surface should be very clean, if dirty, then it will affect the printing. Print out the comp if there black block, black bars, and the toner stick to Text taken elsewhere, this means that the surface of hot roll has been or injury, if minor, can be used after cleaning (but not for output sulfuric acid paper ), if seriously, only the replacement of the heating roller. Matched with the heating roller rubber roller, will glue Feifen after long-term use, usually minor will not affect output, but serious, will the output of the comp on the back of dirty. Clean heating roller and rubber roller, the available cotton wool dipped in ethanol and carefully spent to wipe clean. But not too hard, clean heating roller, but avoid things with a blade and Lee to scratch, so as not to damage the fuser heating rollers. The rubber roller cleaning can be easier, simply wipe the surface clean.

(2) the maintenance of separation claws

Separation claw is close to the heating roller of small claws, their sharp claws usually with long-term mild heating roller friction, while the output of the pattern back and long-term friction, over time, the outer layer of the film will swap Morocco, which will stick on Feifen agglomeration, so on the one hand to increase the friction with the heating roller damaged heating roller, on the other hand, after the back adhesive powder agglomeration becomes smooth enough to prevent the transmission of paper, so that the output of paper into a curved fold-like, affect the quality of the paper can not even export the card here. Therefore, if found to have fold out paper should pay attention to clean separation claws. Is the separation claw carefully removed, carefully wipe stuck to Feifen agglomeration, and can carefully to the back ground smooth, sharp claws Department generally do not wear, to wear, we must be careful operation. Wipe clean and can be carefully re-installed after the last (and can be installed on each separate exchange claw used to make parts of the mill
Loss similar).

(3) thermal resistance and thermal switch maintenance

Thermal resistance and thermal switches are close to the parts with the heating roller, the early laser printers installed in the heat near the center of roll and later improvements were installed in the heating roller 2, the two parts usually not much maintenance However, the use of a longer time (higher output) of the printer, due to thermistor shell (outer shell) on the glue Feifen and some dirt will affect its temperature sensor, so that on hot roll sense Wen Fasheng change, so that the surface temperature of heating roll up, it will first affect the life of hot roll, accelerated aging of rubber rollers and separation claws and other parts of the wear and tear, such as increased preheating time, so fuser lamp reduced service life. Second, the high temperature would affect the output of paper curl, causing paper jams, and sometimes even make sulfuric acid paper, coated paper, etc. can not use foam. Serious, even heated roller will burn.

Maintenance approach is to carefully remove the fuser, remove the thermal resistance and thermal switches, some with cotton dipped in alcohol to wipe clean its shell of the dirt, operation must be careful not to damage their case. Then carefully reinstall it, installed thermal resistance must pay attention to the distance with the heat roller, so as to avoid high temperature damage to components. In general, to access Press closer thermistor as heating rolls, thermal switch may be appropriate to open space some distance.

4. Photoelectric sensor maintenance

Photoelectric sensor has been polluted and can cause the printer test failure. If the manual feed sensor is contaminated, the printer control system has not detected, no paper signal, the manual feed function will be invalid. Should therefore be related with cotton flower to wipe clean the surface of each sensor, so that they remain clean, and always have the sensor sensitivity.

5. Cartridge maintenance

Laser printer cartridges for organic silicon photoconductor, there is the work of fatigue, therefore, continuous working time can not be too long, if the output is large enough, can stop working after some time off for a while and then continue to output. Some customers come with two compact
Alternate work is also an option. The cartridge of maintenance, and can be carried out this:

(1) carefully remove the cartridge components, wipe the surface with a clean cotton flower, but not force, to prevent scratches the surface of the cartridge.

(2) flower with cotton dipped wipe the toner cartridge surface cleaning agents. Cleaning should be circled to spiral-type approach, polish with a cotton flower immediately after the cleaning wipe.

(3) with the gauze with talc in the drum surface, gently pat on a layer of talcum powder, can be loaded back to use.

(4) ordinary toner replacement should pay attention to the collection of positions in the Feifen Feifen clean, so as not to affect output. Because the accumulation of too much Feifen, first there are "powder leakage" phenomenon, that is, the output of the comp on (usually vertical) irregular black spots, Hei blocks, as if not continue to use ruled out, some time in "Leakage powder" It will seriously bottom ash (and there are vertical scratches). Produce such failure is due to accumulation at first Feifen been full, so that in the resulting Feifen not enter Feifen record stores, and waste bunker in Feifen will continue to "squeeze" out to produce "powder leakage" phenomenon, Then, as Feifen contains a burning parchment, fiber and other dirt, rough, friction with the drum a long time, and increasingly tight, the pressure increases, eventually the surface of the photosensitive film cartridge worn away, cartridges will be ruined. Therefore, the output pattern bottom ash serious, because they have a vertical friction, the bottom ash can be seen in the longitudinal scratches. Therefore, the discovery of the output "leakage powder" the waste bunker on the immediate clean-up. Finally should be noted that as far as possible away from light cleaning cartridge.

6. Sensor strip board and maintenance of transmission lock plate

With a soft cloth slightly moistened with water, the silver-white long plate and transfer the accumulated lock disc wipe clean burning parchment and other foreign matter to ensure seamless transmission.

7. Feeding guide plate to maintain

Feeding guide plate is located below the toner cartridge, its role is to transfer to the paper through the fuser component toner cartridges. When cleaning with a soft cloth slightly moistened with water and the feeding guide plate to wipe clean the surface to ensure clean and clear prints.

8. Other transmission parts for maintenance

Other transmission components, such as rubbing roller, transmission gear, the output drive wheel and some other drive, feeding channel. These components do not maintain a special, usually just to keep clean on it. The twist of paper round, should the paper found that rubbing a bad effect (ie, do not rub into the paper), it can check whether the paper used in the paper too much powder or sand powder, try not to use poor quality paper, in addition, can be dipped cotton some rubbing alcohol wipe paper round, you can address the issue. Should the aging of paper rubbing serious, can be used fine sandpaper rubbing roller horizontal sand, can solve the period of time, of course, the aging of the rubbing roller eventually be replaced. Other rubber wheel drive with the maintenance of generally rubbing roller. Doing more than cleaning, you must first turn off the laser printer.