What should I do if there is a wide black spot in the middle printed by the laser printer?

Laser printer.

After using it for a long time, the electrode wire will become dirty, and the printing effect will appear black bars, which can be solved by cleaning the electrode wire.

Taking the Brother laser printer as an example, the solution is as follows:

1. Open the front cover.

2. Slowly take out the toner drum unit and toner cartridge assembly, and it is recommended to place the toner cartridge on a piece of paper that is easy to handle and has a clean and smooth surface to prevent the toner from spilling;

3. Gently slide the green slider left and right several times to clean the main electrode wire in the drum unit, and make sure to slide the slider back to the initial position (as shown below). If the slider is not in the initial position, the printed page may appear vertically streaked.

4. Assemble the drum unit and toner cartridge assembly back into the printer.

The question you are talking about depends on what follows:

If it does not appear if it does not have an East machine, it is recommended that you change the drum kit. will be normal.

If you add powder, then please pour out all the powder you added and clean the inside of the powder bin, and pour in new powder.

Because the particles of the powder are different, they are not compatible, so there are water streaks.

Is there a black spot in the next section? Or there is only one black dot on one sheet.

If there is an interval section, it is generally the wear of the drum center, and you can judge the distance of the drum center or the distance of the electric baton by looking at how long this section is.

If there is a piece on one sheet, it may be dirty on the paper wheel, and it will stick to the paper and cause it to be blown clean

Check out the laser cartridge.

Hot sticks. Cartridge.

There are always only these few problems when there are black spots.

The reason for the black spot of the laser printer is basically that there is a problem with the drum core of the toner cartridge, and the cause and solution of the problem will be known below, and powder filling is also one of the reasons for this phenomenon.

1. If there are black spots or black lines, the problem is that if there are a lot of regular black spots or black lines in the drum core, the drum core is generally dirty or worn, and the drum core is dirty and easy to deal with. On the other hand, if you put the drum core on the ground during a powder change, or if you touch a hard object such as a screwdriver, the drum core will wear out. Because the drum core is made of photosensitive material, the repair method is to use a photosensitive drum polishing cleaner to repeatedly rub the surface of the photosensitive drum 3-4 times, be careful not to leave the detergent on the surface of the photosensitive drum, and then put it back on the drum frame to use.

Of course, if the drum core is too worn, then the drum core must be replaced. The drum core is not expensive, about 100 yuan, and it is generally possible to add three to five times of powder, but the premise is to pay attention to the model and quality, and do not replace it casually. If the same situation still occurs when the drum core is replaced with a new one, then whether the scraper and charging stick are damaged.

2. The font becomes faint or there is a white line, the problem is in the magnetic stick printer magnetic drum If the font printing is faint or there are some words in the middle that are not clear and white lines appear, then the first thing to check is the powder on the magnetic stick. If it is after powdering, it is common for the brand of toner you to fill is different from the brand you originally used, and the font will fade when the two different brands of toner affect each other. The solution is to clean the original remaining powder on the magnetic stick and then fill it with powder.

It should be noted that the drum core should be protected when it is removed, because the drum core cannot be exposed to strong light, including sunlight and harsh lights, and finally placed in a black bag for cleaning.

Remember, don't think that "one powder goes the world", because the composition of existing printer toner is a single group of powder (that is, the composition only includes one raw material - toner) and a double group of powder (that is, toner + carrier), for example, Epson uses non-magnetic toner, and HP uses toner containing ferric oxide, and the two are not interchangeable at all.

Printer photosensitive drum core printer toner cartridge powder filling to the toner cartridge is the greatest damage, the more times the powder is filled, the printing quality of the toner cartridge is getting worse and worse, generally when the number of toner times is more than 3 times, there will be some regular black spots, and this problem will become more and more serious with the increase in the number of printing, when the printing handwriting is blurred or printed out of a black mark, the toner cartridge will be scrapped, many people choose to replace the new toner cartridge. In fact, this waste selenium is still available, but Weixiang needs you to repair it, and the main work of the repair is to replace the photosensitive drum and refill the powder. In the process of replacing the photosensitive drum, the waste powder must be cleaned up.

It should be noted that the newly bought photosensitive drum has a black anti-** seal, which should not be torn off before installation to prevent **, and can only be torn off after the installation is checked.

1. The reasons are as follows:

1. If the laser is damaged, or there is light leakage on the platen, replace the laser and clean the platen.

2. The drum core is aging and the drum core is replaced.

3. When the life of the drum assembly is up, the whole set of drum assembly is directly replaced.

4. If the scanner is dirty or damaged, replace the scanner.

2. Solution:

1. First observe whether the black band of the output sample is blurry, and if so, clean or replace the drum scraper. If not, check whether there are traces of scratches on the longitudinal direction of the drum, if there is, check whether there is damage to the local scraper of the drum, generally speaking, there are longitudinal black lines on the output sample, indicating that the drum has obvious scratches in the longitudinal direction (circumferential direction), which can only replace the drum.

2. If it is not a problem on the drum, you can check whether there is a foreign object or defect on the magnetic roller scraper, so that it can not play the role of limiting the toner, there is no beating imaging distance between the toner and the drum, and the toner on the magnetic roller is directly adhered to the surface of the drum, forming a black line. The solution is to clean the scraper on the magnetic roller or replace the magnetic roller scraper.

3. The printer (general guide paper channel) is contaminated by toner, and black bar failure will also form. When melted toner accumulates on the paper guide in the paper guide of the printer, the paper rubs against the paper as it passes, forming a black line. This removes the dirt while it's hot while the printer is powered off.

First of all, it may be that the toner is not properly loaded.

Observe if the black band of the output sample is blurry, and if so, clean or replace the drum scraper.

Check whether there are traces of scratches on the longitudinal direction of the drum, if there is, check whether there is damage to the local scraper of the drum, generally speaking, there are longitudinal black lines on the output sample, indicating that the drum has obvious scratches in the longitudinal direction, which can only replace the drum.

Check whether there is any sticky or damaged scraper to clean the scraper, and remove or replace the scraper first to avoid scratching the photoreceptor drum again. Check whether there is a foreign object or defect on the magnetic roller scraper, so that it can not play the role of limiting the toner, there is no beating imaging distance between the toner and the drum, and the toner on the magnetic roller is directly adhered to the surface of the drum, forming a black line. The solution is to clean the scraper on the magnetic roller or replace the magnetic roller scraper.

A printer is one of the output devices of a computer that is used to print the results of computer processing on a related medium. There are three indicators to measure the quality of a printer, print resolution, print speed, and noise. There are many types of printers, according to whether the printing element hits the paper, it is divided into impact printers and non-impact printers.

According to the structure of printed characters, it is divided into full-character printers and dot matrix character printers.

There are several reasons for this:

1. If the drum core of the toner cartridge is broken, you can open the printer door cover, take out the toner cartridge, and check whether the coating on the drum core is broken (the coating is generally light blue or light green, and if it is broken, you can see that there is a black toner spot in the broken place, which is the toner that is glued on).

2. During the use of the toner cartridge, debris dust falls into the laser inlet and sticks to the charging roller;

3. If you change to another toner cartridge to print, it is a bit that there is a debris on the printer's fuser film or pressure roller, just wipe it off.

The causes of black spots in laser printers are different, and the solutions are also different.

It can be roughly divided into the following categories:

1. There are regular black dots and laughing ridges, such as a black spot at the same Yexiao position at intervals on an A4 paper, which is caused by the sticky powder of the drum core or the skin being scratched by a hard object.

The solution is to replace the drum core or gently wipe it on the drum core with a paper towel, and if you can wipe it off, you can use it for a while.

2. The black spots of the dry shell are stuck to the paper, and they can be shoveled off with fingernails. This is an issue with the fuser component. Generally, due to long-term heating, the hot roller of fixing will have residual toner sticking to it, and these residual toner will stick to the paper for a long time, so there will be black spots or black fast of dry shell.

The solution is to remove the fixer and clean the toner on the hot roller, or wipe it with a paper towel dipped in xylene solution, or if xylene is not present, you can also use a fingernail, a damp cloth or even a screwdriver.

3. There are large black spots, and if you look closely, the black spots are accompanied by bottom ash, and the center of some black spots is actually white. In this case, the toner in the powder bin is running out, or the wrong powder is added.

The solution is to clear the warehouse and then add powder.

Summary. If there are white spots in the print, it should be a problem with your consumables. If it is a toner separation device, you can only replace the toner cartridge, which should solve such a problem.

If there are white spots in the print, it should be a problem with your consumables. If it is a device that separates the toner and powder, you can only replace the toner cartridge, which should be able to solve the problem of chain wildness.

It's okay to print a small area of black.

Large areas are only black and problematic.

There are several reasons for analyzing this problem: One situation is that the glass platen of the photocopier is too dirty. This is relatively easy to solve, but you need to wipe the glass platen clean with a soft cloth soaked in neutral detergent.

The second situation is that the ** device is dirty. To do this, you need to remove the glass platen, wipe the lens of the printer with the lens paper of the camera, and wipe a few mirrors (the mirror inside the printer like the mirror we usually use). There is also the condition that the printer's fuser roller (which is hot after copying) sticks to the residual toner, which is not uncommon, especially when copying large quantities at one time.

Usually the spot is larger and may crush the paper through the spot. At this time, in the case of the printer heating up, first copy a few pieces of paper, and then open the upper cover of the copier, lift the fixing component slightly, you will see that there will be some things stuck to some places on the fuser roller, use a cotton ball to wipe the toner stuck to the fuser roller, pay attention to wipe not with wet things, because the temperature of the fuser roller is very high, wiping with wet things may damage it, and you can't wipe it when the machine is cold, because the toner sticks very firmly when the jujube is cold, and it can't be wiped off, such as hard.