Solutions to six common faults of the hottest prin

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Solutions to six common faults of printers

printers have become necessary equipment for our modern office. It can be said that their use has greatly reduced our labor intensity, improved work efficiency and made the office environment easier. However, due to various reasons, the printer often has one kind of fault after being used for a period of time. Here are the maintenance methods and skills of the ten faults that often occur in the printer, hoping to help you use and maintain the printer

first, the printer outputs blank paper

for the needle printer, the blank of the printing paper is mostly caused by the drying of the ribbon ink, the breakage of the ribbon, the damage of the print head, etc. the ribbon should be replaced in time or the print head should be repaired; For inkjet printers, the faults that cause blank printing are mostly due to nozzle blockage, no ink in the ink cartridge, etc. the nozzle should be cleaned or the ink cartridge should be replaced; For laser printers, the cause of such failures may be that the developing roller does not absorb Toner (the DC bias of the developing roller is not added), or the photosensitive drum is not grounded, so that the negative charge cannot be released to the ground, and the laser beam cannot function on the photosensitive drum

in addition, if the photosensitive drum of the laser printer does not rotate, no image will be generated and transferred to the paper. Disconnect the power supply of the printer, take out the toner box, open the notch on the box cover, make a mark on the non photosensitive part of the photosensitive drum, and then reinstall it into the machine. Start up and run for a while, and then take it out to check whether the mark has moved, so as to judge whether the photosensitive drum works normally. If the toner cannot be supplied normally or the laser beam is blocked, our professional technical team can also print blank paper with the technical support of every enterprise. Therefore, you should check whether the toner is used up, whether the ink cartridge is correctly installed in the machine, whether the sealing tape has been removed, or whether there are obstructions on the laser irradiation channel. It should be noted that the power supply must be turned off during the inspection, because the laser beam may damage the operator's eyes

II. The output of the printing paper turns black

for the needle printer, the causes of the fault are the depilation of the ribbon, too much ink on the ribbon, dirty print head, poor ribbon quality and too close adjustment of the push rod position. During maintenance, the push rod position should be adjusted first. If the fault cannot be eliminated, replace the ribbon and clean the print head. Generally, the fault can be eliminated; For inkjet printers, it is important to check whether the nozzle is damaged, whether the ink pipe is broken, and whether the ink model is normal; For laser printers with experimental power, most of them are due to the failure of corona discharge wire or the failure of control circuit, which makes the laser emitted all the time, resulting in the black print out content. Therefore, check whether the corona discharge wire has been disconnected, whether the corona high voltage exists, and whether the beam detector in the laser beam path works normally

III. incomplete or unclear printing characters

for inkjet printers, there may be two reasons: the ink cartridge is out of ink, the printer is not used for a long time, or the nozzle is blocked by direct sunlight. The solution is to replace the ink cartridge or fill it with ink. If the ink cartridge is not used up, it can be concluded that the nozzle is blocked: remove the ink cartridge (for printers where the ink cartridge nozzle is not integrated, the nozzle needs to be removed), put the nozzle in warm water for a while, and be careful not to partially immerse the circuit board in water, otherwise the consequences will be unimaginable

for stylus printers, there may be the following reasons: the printing ribbon takes too long to use; The print head has not been cleaned for a long time, and there is too much dirt; The print head has a broken needle; The print head drive circuit is faulty. The solution is to adjust the distance between the print head and the print roller first. If the fault cannot be eliminated, you can replace the color band. If not, you need to clean the print head. The method is: remove the two fixing screws on the print head, take down the print head, use a needle or a small hook to remove the dirt in front of and behind the print head, which is generally the ribbon fiber accumulated for a long time, and then drop a few drops of instrument oil on the back of the print head where the needle can be seen to remove some dirt. Do not install the ribbon, empty a few sheets of paper, and then install the ribbon, so that the problem can be basically solved. If the needle of the print head is broken or the driving circuit problem, You can only replace the printing needle or drive tube

IV. the printing handwriting is weak

for needle printers, the causes of this kind of failure are mostly the drying of ribbon ink, the broken needle of the print head, and the position of the push rod is adjusted too far, which can be solved by replacing the ribbon and adjusting the push rod; For inkjet printers, nozzle blockage, ink drying, incorrect ink model, air inlet in the ink delivery pipe, and high printer working temperature will all cause this fault. The nozzle and ink box should be tested and repaired; For laser printers, when there is less toner in the toner box, the developing voltage of the developing roller is low, and the photosensitive effect of the toner is poor, the printing handwriting will also be diluted. At this time, take out the toner box and shake it gently. If the printing effect is not improved, replace the toner box or adjust a group of photosensitive switches under the printer toner box to match the photosensitive sensitivity of the toner

v. when printing, one side of the handwriting is clear and the other side is not clear

this phenomenon usually occurs on needle printers, and inkjet printers may also occur, but the probability is small, mainly because the guide rail of the print head is not parallel to the print roller, resulting in a distance between the two. The solution is to adjust the distance between the print head guide rail and the print roller to make it parallel. The specific method is: loosen the adjusting plates on both sides of the guide rail of the print head respectively, rotate the adjusting plates counterclockwise to reduce the gap, and finally adjust the guide rail of the print head and the print roller to be parallel to solve the problem. However, pay attention to adjust the direction when adjusting. You can adjust it gradually and print more times

VI. repeated stains on the printing paper

the repeated dirt faults of the stylus printer are mostly caused by the depilation of the ribbon or too much ink, which can be eliminated by replacing the ribbon box; The repeated dirt of inkjet printer is caused by ink leakage of ink box or ink delivery pipe; When the nozzle performance is poor, the ejected ink and the remaining ink cannot be well disconnected and are in a balanced state, and ink leakage will also occur; There is a certain regularity in the occurrence of such phenomena in laser printers, because when a piece of paper passes through the printer, the 12 kinds of rollers in the machine rotate more than one circle, the largest photosensitive drum rotates 2-3 circles, and the paper feeding roller may rotate 10 circles 162 inner wall coating. When stains with equal intervals appear on the paper, it may be caused by dirty or damaged rollers

information source: China Computer News

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