What s the matter with the black side of everything that the printer copied?

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Set the brightness or contrast. or toner concentration. It is possible that the laser head is not good, or it is possible that the toner cartridge is not good.

There may be a problem with the cartridge. There is also a possibility that the concentration is too large and can be adjusted smaller.

The toner cartridge has no ink, or the toner in the toner cartridge is uneven, and finally the toner is not filled with good powder!

Upstairs is all nonsense, if the printing and copying are not good, it's the toner cartridge's fault, if it's just that the copying is not good, it's the scanning head is broken.

Summary. Hello, dear, 1, if there is a black shadow printed out, it may be that the toner is unqualified, or other types of toner are added, resulting in the toner being left on the drum core, causing the printed to be black, as long as the toner is replaced, or the toner is cleaned and then added to the qualified toner. 2. It may also be a file that needs to be printed or **, all set to black in the settings, and you only need to cancel the settings at this time.

Hello, dear, 1, if there is a black shadow printed out, it may be that the toner is unqualified, or other types of toner are added, resulting in the toner being left on the drum core, causing the printed to be black, as long as the toner is replaced, or the toner is cleaned and then added to the qualified toner. 2. It may also be a file that needs to be printed or **, all set to black in the settings, and you only need to cancel the settings at this time.

Maintenance method of printer: 1. Place the position away from the window, the window is easy to produce dust, and there may be many failures if the dust is not cleaned for a long time, if there is dust, it should be cleaned up in time. 2. No other small items or heavy objects can be placed on the printer, so as not to malfunction or deform the printer.

3. You can use neutral detergent to clean the printer, and wipe off the ink and oil stains on the machine surface when wiping. 4. Check the internal parts of the printer for a long time, check the ribbon regularly, and replace it in time if the surface is fluffy, so as not to break the ribbon and hang up the printing needle.

What's going on with the things printed out by the printer are all black, the files printed by the printer are all black, and you can troubleshoot them by the following steps: 1. Check whether the electrode wire is broken, if the electrode wire is broken, you can replace the toner cartridge or electrode wire; 2. Check whether the corona wire is dirty. You can check the corona wire, if it is dirty, you can gently slide the slider on the wire left and right, and pay attention to return to the position after cleaning; 3. Check whether the scanner is dirty.

If it is dirty, it is recommended to wipe it clean with wet wipes; 4. Check whether the drum unit is damaged. If it is broken, a new drum unit can be installed; 5. Check whether the fixing unit is dirty, if it is dirty, it is recommended to contact the after-sales service for specific verification; 6. Check whether there is a problem with the driver. If there is no problem with copying, there may be a problem with the driver, it is recommended to log in to the official website of the printer**, and try to reinstall the driver, hoping to help you.

Summary. Dear, hello, I'm glad to answer for you: the things printed out by the printer, one side is always black, or the copy is not clearHello Dear Hello The scanning component of the photocopier is damaged, replace the scanning head, and replug the cable of the scanning component; The main control board of the photocopier is partially damaged, and the main control board is detected and replaced.

It should be noted that when replacing the scanning head and main control board, you need to contact the after-sales personnel; The container inside the toner cartridge is full, and the waste toner cannot be absorbed during printing, so it remains on the drum core, causing the paper to turn black. 1. The light conductive material on the drum core on the side corresponding to the blackened paper is rubbed off due to long-term printing. Solution:

It is possible to change a drum core. 2. The container for collecting waste toner in the toner cartridge is full, and the waste toner cannot be absorbed during printing, so it remains on the drum core, which will cause the paper to turn black. Solution:

One side of the things printed out by the printer is always black, or the copy is not clear.

There is black on one side of the print.

Half of the paper is black.

Dear, hello, I'm glad to answer for you: the things printed out by the printer, one side is always black, or the copy is not clearHello Dear Hello The scanning component of the photocopier is damaged, replace the scanning head, and replug the cable of the scanning component; The main control board of the photocopier is partially damaged, and the main control board is detected and replaced. It should be noted that when replacing the scanning head and main control board, you need to contact the after-sales personnel; The container inside the toner cartridge is full, and the waste toner cannot be absorbed during printing, so it remains on the drum core, causing the paper to turn black.

1. The light conductive material on the drum core on the side corresponding to the blackened paper is rubbed off due to long-term printing. Solution: You can change a drum core.

2. The container for collecting waste toner in the toner cartridge is full, and the waste toner cannot be absorbed during printing, so it remains on the drum core, which will cause the paper to turn black. Solution: If the toner cartridge is one, directly find the waste toner mouth, pull out the lid, and pour out the waste toner.

If you are satisfied with my service, please give a thumbs up, and once again wish you all the best! Peace and joy!

Both the drum rack and toner cartridge are new.

Give it a try.

There are three aspects that can be considered for inkjet printers:

Scrape the paper against the print head to see if the paper is arched or if the material is too thick.

The pressure in the ink pipeline is uneven, and the weather is too hot, resulting in a high pressure in the ink circuit of the machine, and the ink comes out of the nozzle and discharges the air in the pipe.

If there is a problem with the print head, check whether the print head is perforated or degummed.

The voltage of the motherboard is unstable, which is relatively rare, and can be eliminated from the above 3 methods one by one.

There are three reasons why laser printers are available.

1 Black dots or black lines appear on the printed paper pattern and still appear in the same position after the paper change. The cause of the failure is a damage to the OPC drum.

2 If there are horizontal stripes on the printed paper pattern, and they still appear in the same position after changing the paper, it means that the scraper needs to be changed.

3. If there are longitudinal stripes on the printed paper pattern, and they still appear in the same position after changing the paper, it is that the magnetic roller on the powder bin box is damaged and needs to be replaced.

The black stains copied on the copy paper are generally the ink in the printer, which is rubbed on when printing.

If the copy document is not clear and there are black marks, it should be a problem with the consumables, and you can try to replace the consumables.

If there are stains on the original paper, it is caused by contamination on the toner cartridge of the photocopier or unclean scraping.

The party branch secretary's views and understanding of project management should not simply be regarded as the work of the project manager, and put himself out of the way. Especially for the work requirements of the superiors, the active and advanced participation of the party branch reflects the support for the project management work, and can play a role in promoting the implementation of relevant work as soon as possible. For example, how to promote the work of the project department in cost control is not only the administrative work, but also the party branch should be listed as the focus of work, and it should be one step ahead in planning.

The first is to publicize among the employees, expand the scope of the project department's understanding of the cost center, and strengthen the employees' awareness of efficiency; The second is to plan the establishment of a cost control supervision team and participate in the formulation of relevant systems. In the third step, the party branch will further carry out deeper positive thinking on how to strengthen internal management, improve expenditure procedures, and control expense expenditure. These tasks are what the administrative leaders want to do but do not have the energy to do, and the advanced action of the party branch can further promote the implementation of relevant work as soon as possible.

The "promising" of the party branch in management has further promoted the implementation of party building work, and the support of administrative leaders and employees can also be obtained in the process of implementation. On the contrary, if the role of party building work cannot be reflected in management, it is more difficult to obtain more support from employees in party affairs.

The first column of the table indicates the number of lemonade glasses that Telma can produce, ranging from zero to 10 glasses per hour. The second column shows the total cost of producing lemonade at Telma. Figure 13-4 plots the total cost curve for Telma.

The amount of lemonade (according to the first column) is on the horizontal axis, while the total cost (according to the second column) is on the vertical axis. Southy? Terma's total cost curve shape versus Hengree?

Helen's similarity. In particular, it becomes steeper as production increases, reflecting (as we have discussed) marginal yield decline.

Fixed vs. variable costs.

The total cost of Telma can be divided into two categories. Some costs do not change with the output of the production and are called fixed costs. Telma's fixed costs include the rent she has to pay, as this cost is the same no matter how much lemonade Telma produces.

Similarly, if Telma needs to hire full-time store staff who pay salaries, the clerk's salary is a fixed cost, no matter how much lemonade is produced. The third column of table 13.2 shows the fixed cost of Terma, which in this case is $3 per hour.

Some of the costs of a business fluctuate as the business changes its output, which is known as variable costs. Telma's variable costs include the cost of lemons and sugar: the more lemonade Telma makes, the more lemons and sugar she needs to buy.

Similarly, if Telma had to hire more workers in order to produce more lemonade, then the wages of those workers would be a variable cost. The fourth column of the table shows the variable costs for Telma. If she doesn't produce it, the variable cost is zero, if she produces one cup of lemonade, the variable cost is dollars, if she produces 2 cups of lemonade, the variable cost is dollars, and so on.

Summary. Hello, this may be caused by a problem with the printer's toner cartridge, first check if the printer's toner cartridge is worn or damaged, if the toner cartridge is worn or damaged, you need to replace it with a new one. In addition, it is also necessary to check whether the head of the printer is clean, if there is dirt on the head, it will also make the printed thing completely black, so you need to wipe the head with a damp cloth to ensure the printing effect.

In addition, check whether the printer's toner is full, if the toner runs out, it will also cause the printed thing to be completely black, and you need to replace it with a new toner.

I printed** and it was all black.

Hello, this may be caused by a problem with the printer's toner cartridge, first of all, check whether the printer's reed toner cartridge is worn or damaged or damaged, if the toner cartridge is worn or damaged, you need to replace it with a new one. In addition, it is also necessary to check whether the head of the printer is clean, if there is dirt on the head, it will also make the printed cavity completely black, so you need to wipe the head with a damp cloth to ensure the printing effect. In addition, check whether the printer's toner is full, if the toner runs out, it will also cause the printed thing to be completely black, and you need to replace it with a new toner.

Updated toner's.

It's normal to hit **.

Hello, this may be a more serious problem, there may be a hail large print head failure, in addition to confirming that the print head and driver software have been installed and updated correctly, you can try to replace the print head to determine whether it is a town stove print head failure or other test source brigade erection work.

If there are also black lines in the print, the problem is in the following 2 aspects.

1. The black line parallel to the paper is the charging roller of the toner cartridge by the problem, and the solution is to replace the charging roller or change the toner cartridge.

2. If it is a vertical line, it should be a problem with the drum core or a problem with the scraper of the waste toner bin. If the scraper of the waste toner bin is scratched, even if it is as small as a hair, there may be powder leakage (waste powder of the waste toner bin), so that a vertical black line will appear when printed, so you can change the scraper.

3. If there is no black line in the print, Huailu means that there is a problem with your scanning component, open it and clean it, it should be fine.