Maintenance of laser printers

Although the laser printer models a lot, but because of its working principle and the use of materials are basically the same, but some specifications are different just so, for the general maintenance of laser printers, basically can be suitable for a variety of laser printers, but some special differences just.

　　Maintenance of electrode wire

As the printer has residual toner, dust and confetti and other sundries, charging, transfer, separation and electrode wire will be contaminated, so that the voltage drop, and affect the normal performance of the work. In general, if the charge, transfer electrode wire stained with waste powder, ashes, etc., will make printing out of the ink color is not enough, or even very light, this is mainly due to the electrode wire after the toner cartridge on the insufficient charge, so it produced on the toner cartridge of the potential of insufficient suction toner, transfer electrode wire pollution and make the voltage is not enough, When the paper through the paper and the toner cartridge contact is not close enough, and make the transfer to the paper toner is not enough, so will make the output pattern ink too light. In addition, transfer electrode wire (groove) When the pollution is serious will also make the output pattern back dirty, because the pattern output to pass through the transfer electrode wire groove. And the electricity electrode pollution will make the paper separation is not smooth and produce paper jam and so on, the electrode pollution will make the toner cartridge residual toner cleaning, so that the output pattern bottom ash seriously. Maintain electrode wire should be carefully removed electrode wire assembly (some machine model of the printer do not have to remove electrode wire, can be directly cleaned on the computer), first with the brush off the attachment of foreign bodies, and then use absorbent cotton flowers gently wipe it carefully clean.

　Maintenance of laser Scanning system

When lasers in the laser scanning system and various working mirrors are contaminated by dust, the bottom ash of the printed parts will increase and the image is not clear. Use absorbent cotton flowers to wipe them clean, but should be careful not to change their original position or bad.

　　Maintenance of the Fuser section

The maintenance of the Fuser section includes a fuser heating roller (including rubber roller), a separate claw, a thermistor and a heat-sensitive switch.

(1) Fixing heating roller maintenance fixing heating roller in the long-term use will likely adhere to a layer of toner, in general, the surface of the heating roller should be very clean, if there is dirty will affect the printing effect. If the printed proofs appear black block, black, and the graphics and text of the toner adhesion to other places, which means that the surface of the hot roller has been or injured, if a slight, clean can be used after cleaning (but not suitable for the transmission of sulfuric acid paper), if serious, only replace the heating roller. With the heating roller paired with the rubber roller, long-term use will also be sticky waste powder, generally less than the impact of the output effect, but if serious, will make the output of the manuscript back dirty. When cleaning the heating rolls and oak roller, use the absorbent cotton flower to dip the anhydrous alcohol carefully and wipe it clean. But not too hard to wipe the heating roller, not to mention the blade and the benefits of scraping to avoid damage to the fuser heating roller. And the rubber roller wipe can be simple, just wipe its surface clean can.

(2) The separation Claw is a small claw which is close to the heating roller, its sharp claws and heating rollers for a long time a slight contact friction, and the back and output of the pattern of long-term friction, a long time, the outer layer of the film will be rubbed off, which will stick to the waste powder caking, so that on the one hand, it will increase friction with the heating roller damage heating rollers The back of the sticky powder is not smooth enough to prevent the transmission of paper, so that the paper output into a curved fold-shaped, affecting the quality, even the paper can not output and card here. Therefore, if it is found that the output paper folds should be careful to clean the separation claw. The method is to carefully remove the separation claw, carefully wipe the waste powder sticking to the top of the lump, and can be carefully polished back, pointed claws generally do not grind, to grind, be sure to operate carefully. Wipe clean and then carefully reload (when installed, each of the separate claws can be replaced to make the wear around).

(3) Thermistor and thermal switch maintenance thermistor and heat-sensitive switch are with the heating roller close to the parts, the early laser printer, which was mounted near the center of the hot roll, was later modified to be mounted at both ends of the heating roller, which normally did not require much maintenance, but in the use of a longer time (large output) of the printer, Because the thermistor shell (Outer packing shell) will be glued to the waste powder and some dirty things, affect the temperature of its induction, so that the heat roller temperature changes, so that the heating roller surface temperatures increased, which will affect the life of the hot roll, accelerate the aging of the rubber roller and the separation of claws and other parts of wear, increase preheating and other time, So that the service life of the fuser lamp is reduced. Second, the temperature is too high will make paper curl and affect the output, resulting in cardboard, and sometimes even make sulfuric acid paper, coated papers, such as foaming and can not be used. Even the heating rolls burn out when the situation is serious.

Maintenance of the method is to carefully remove the fuser, remove the thermistor and heat-sensitive switch, with cotton dip some alcohol in its shell of the dirty wipe clean, the operation must be careful, do not damage its shell. Then carefully loaded back, when installed must pay attention to the thermal resistance and hot roll distance, lest the temperature too high damage parts. In general, to the thermistor as far as possible contact with the heating roller, heat-sensitive switch can be appropriate space to open some distance.

　　Maintenance of toner Cartridges

Laser Printer toner Cartridge for silicone light conductor, there is work fatigue problem, therefore, the continuous working time must not be too long, if the output is very large, you can stop after work for a while and then continue to output. Some users use two powder boxes to alternate work, is also a way. As for the toner cartridge maintenance, generally this can be done:

(1) Carefully remove the cartridge components, with absorbent cotton flowers will be wiped clean surface, but not hard, in case the toner cartridge surface is zoned bad.

(2) with absorbent cotton flower dip in the toner Cartridge special detergent to wipe the surface of the toner cartridge. When wiping should take the spiral circle method, after polishing immediately uses the absorbent cotton flower to wipe clean the detergent.

(3) using a gauze with talcum powder to lightly pat a layer of talcum powder on the surface of the drum to be fitted back to use.

(4) Usually in the replacement of toner to pay attention to the waste Powder Collection Warehouse Waste powder clean, so as not to affect the output effect. Because the waste powder accumulation too much, first will appear "leakage powder" phenomenon, that is, in the output of the manuscript (generally vertical) appear irregular black spots, black block, if not excluded and continue to use, over a period of time in the "leakage of powder" place will appear serious bottom ash (and longitudinal scratches). The cause of this failure is that at first the waste powder accumulation is too full, so that the waste powder can not be produced into the waste powder creation warehouse, and waste powder bin in the waste powder will continue to "squeeze" out and produce "leakage powder" phenomenon, and then, because the waste powder contains ashes, fiber and other dirty, coarser, and toner cartridge for a long time, and more and more tight, more and more pressure, Eventually the toner cartridge surface of the photosensitive film is worn off, the toner cartridge is damaged. Therefore, the output of the paper pattern bottom ash is serious, because they have been longitudinal friction, so in the bottom of the ash visible to the longitudinal scratches. Therefore, in the discovery of "leakage of powder," immediately clean the waste toner cartridge. Finally, it should be noted that the toner cartridge cleaning should try to avoid light.