Black line when printing on a laser printer

Failure of the magnetic shaft

In the design of a laser printer, a magnetic roller is used to transfer ink from the hopper to the drum. The absence or presence of defects, such as streaks, when printing on a laser printer directly depends on how evenly the toner is supplied to the photoreceptor. A noticeably darkened gray background or small dark stripes indicate, first of all, a deterioration in the properties of the magnetic roller. The problem can be eliminated by replacing the failed shaft.

Drum wear

The drum unit, in other words, the photoreceptor, is the main component of the cartridge. It is a coated aluminum shaft that is sensitive to optical radiation. Over time, the coating wears out, which is why streaks appear when printing on a laser printer.

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The first sign of damage to the drum unit will be gray-black wavy lines on one of the edges of the printed document. The problem is solved by replacing the drum unit. Also, streaks may appear due to dry lubricant on the photoreceptor. Such a malfunction occurs quite often, especially if the device has not been used for a long time. It can be solved much easier: just run the printer cleaning program from the menu of its settings on the computer.

Problems with the metering blade

One of the elements of the cartridge is the metering blade. It controls the amount of toner that is delivered to the magnetic roller during printing. Poor quality paper used for the printer can be one of the causes of this breakdown. Small fluff from the paper will accumulate on the blade, and therefore the roller will not be able to collect enough toner in the place where they accumulate. As a result, the printed document will have a white stripe along the entire length of the page.

To restore print quality, you need to make sure the metering blade is properly seated. If blockages are visible, the blade must be cleaned, and in case of complete wear, replace it.

Leakage violation

If, when printing on a laser printer, stripes appear in different places throughout the page, most likely the problem is in the cartridge itself. To find out the cause of the malfunction, you need to pull the part out of the printer and inspect it carefully. If toner spills from it, you need to make sure there are seals and there are no traces of mechanical stress, such as cracks or chips. If an uncorrectable defect is found, only replacement of the cartridge will help.

Problems with the contact of the photoreceptor and the magnetic roller

Horizontal black stripes when printing with a laser printer means that there is no or no contact between the drum unit and the magnetic roller. In most cases, contamination from the contacts contributes to this. To solve this problem, you need to clean the cartridge.

Faulty charging roller

Charge roller problems can be diagnosed if all or part of the document is duplicated during printing. The charge roller, aka corotron, is a metal rod with a rubber sheath. A charge passes through it to the surface of the drum when printing is started and the residual static voltage is removed after. Malfunctions of the charging shaft are caused by such malfunctions as:

  • dirt on the rubber surface of the shaft or its wear;
  • tears or punctures of the rubber coating;
  • electrical breakdown or change in electrostatic parameters.

If there is no visible damage on the rubber coating of the shaft, then in order to eliminate duplications and stripes when printing on a laser printer, it is worth checking if there is an electrical contact to the shaft itself, and also to clean the rubber jacket. If these manipulations did not give a positive result or there is mechanical damage in the roller device, it is necessary to replace it.

White stripes on the document

If you see white streaks when printing with a laser printer, it is most likely that the toner cartridge is out of toner or the problem is with the laser. Running out of ink is indicated by a wide white stripe along the entire length of the page, which will increase with each subsequent attempt to remove the sheet of paper. It is worth noting that if the cartridge is out of toner, do not take it out and shake it, since these actions will not affect the print quality in any way, and the drum unit may be seriously damaged or completely out of order. The solution to the problem is to refill the cartridge.

If toner is present and streaks remain, then the problem is most likely in the laser. It doesn’t have to be serious. It is possible that dust, small insects or paint particles have gotten on the optics. To prevent this, you need to keep the printer clean and, if necessary, wipe the laser mirror with a lint-free cloth.

Why does a laser printer print in stripes??

Stripes can often be observed when printing on laser printers. What could be the cause of such a malfunction? The list is quite long:

  • Insufficient ink level.
  • Depressurization of the cartridge.
  • Drum damaged / defective.
  • The magnetic roller is damaged or a foreign object has fallen on it (with such a malfunction, in 80% of cases, the sheet comes out of print with a black stripe along the edge or side).
  • Waste Toner Hopper Full.
  • Loose toner metering blade.
  • Lost contact between drum and magnetic roller

over, this list can be continued for a very long time. But we named the most common reasons, and therefore we will move on to how to eliminate the printing failure and, finally, forget about sheets with a strip.

Troubleshooting Flowchart for Inkjet Printer

We figured out why the printer prints in stripes. Now let’s talk about how to diagnose and fix all of the above malfunctions, which are often the reasons for the appearance of streaks on paper. To make it easier for you, we recommend sticking to the following aLGorithm:

  • Check the ink levels first. To do this, use the printer control panel, where almost every model has a similar function that allows you to check the remaining toner. For example, on HP devices, it is located under the Estimated Ink Levels tab. Click on it. the result will be shown on the display. If CISS is used, then you can visually check the remaining ink. Naturally, if the toner runs out, then we install a new cartridge or refill the old one.
  • It is also necessary to replace the cartridge if it is leaking. It is not difficult to check the integrity of this part. Pull out the cartridge and shake it slightly over the table on which you have spread some paper or newspaper beforehand. See the spilled toner? Then the cartridge must be replaced. If the part is airtight, then we put it back and continue diagnostics.
  • Now you need to check the CISS loop. Pay attention to its integrity. Make sure it is not pinched anywhere. Although it can be difficult to diagnose a loop failure on your own. It is also not easy to replace it. Therefore, we recommend that in case of such a breakdown, contact the service center.
  • You have made sure that the CISS loop is fully operational. After that, it would be nice to inspect the air hole filters. They often become clogged with ink and no longer allow air to pass through. Thereby, forming stripes during printing. If they get dirty, then it is best to replace them with new ones.
  • Does the printer strip anyway? And there are white and unprinted stripes with a displacement of the image? This means that it is necessary to clean the encoder tape. This is a translucent film along the carriage. All you need to do is take a lint-free cloth, soak it in the cleaning solution, and wipe the tape. Then let it dry. Did not help? Do streaks keep appearing when printing? Moving on to the next item.
  • You will have to clean the print head. It can be airborne or contaminated. It should be remembered that in inkjet printers the head can be located both inside the cartridge (Canon, HP), and separately, as an independent part of the device (Epson). With the first option, everything is pretty simple. It is enough to replace the cartridge. However, if the head goes separately from the cartridge, then it will be expensive to replace it. It is more expedient to clean the print head. This is done programmatically:
  • Insert clean paper into the printer tray.
  • Open the management utility or go to the specialized device settings center.
  • Find the section “Service” or “Service”.
  • We start cleaning the print head and checking the nozzles (nozzles).
  • If the problem is not solved, then we repeat the operation 1-2 more times. Do not forget to wait about 2-3 hours. Then we check if the printer has stopped printing in stripes.

However, it is not always possible to clean the printhead programmatically. For example, this procedure is meaningless on the Canon Pixma MG2440 inkjet MFP. This model does not have a print head cleaning pump. Therefore, you can also remove dried ink manually. For example, using chemical cleaners.

Didn’t cleaning the printhead and manually flushing with liquids help? Then, most likely, this part is out of order. Printhead breakage is a common occurrence. The most common reason is careless handling of this mechanism during removal / installation. In addition, if you print a lot on a printer or MFP, then the malfunction of the head is simply due to normal wear and tear. Which exit? The answer is obvious. part replacement. The easiest way is if it is built into the cartridge. But for most printers (for example, Epson), the head is placed separately, and its price ranges from 50 to 80% of the cost of a new device.

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Did you follow the above aLGorithm, but the inkjet printer continues to strip? Hence, it is worth contacting the service center for help. Or even seriously consider buying a new device.

What causes streaks when printing with an inkjet printer?

There are several common causes that lead to streaking on paper. At the same time, they are different for an inkjet and laser printer. To begin with, let’s talk about why an inkjet printer can “strip”:

  • Low ink.
  • Ink has dried or thickened inside the printhead (usually from not using the device for a long time).
  • The integrity and tightness of the cartridge is broken.
  • Deformation of the shaft has occurred (often associated with a long service life of the device).
  • The print head is defective. She can be airy. Either the loop itself is out of order / pinched. Most often, with such a breakdown, horizontal stripes are observed on the sheet.
  • The elements of the esponder are dirty or damaged. Is it the tape itself or the sensor.

These are the most common reasons. However, printing streaks may occur as a result of other problems not listed above.

Why the printer prints in stripes and how to fix it

The most common printing defect in a printer is streaking on the paper. They can be narrow, wide, horizontal or vertical, more blurry or very bright, colored or monochrome, with or without spaces. At the same time, the printed document does not color any stripes at all. After all, this is a serious defect, which is not always easy to get rid of. Therefore, let’s find out why streaks appear on the paper when printing and find out how to fix this problem.

Getting rid of streaks when printing on a laser printer

When diagnosing problems in the operation of a laser device, we recommend that you pay attention to the specifics of the appearance of stripes. This will help you understand what kind of malfunction caused the print defect.

  • Let’s say a laser printer prints a strip in the middle. This usually indicates that toner is low. In this case, the less ink in the cartridge, the wider the band. If you have checked and made sure that there is enough toner, then the supply system is faulty. Better to contact the service center.
  • The stripes are made up of small dots. In 90% of cases, such a printing defect is due to the fact that the hopper is full, which collects the rest of the toner. What should be done in such a situation? Clean the bunker, of course. By the way, it is advisable to carry out this procedure every time the cartridge is refilled. Sometimes streaks of small dots also occur due to the fact that the metering blade is incorrectly installed. So don’t forget to check it too.
  • Unprinted, white, and fairly wide stripes on the sheet. There may be several reasons. For example, toner is low. Or a foreign object (paper clip, piece of paper or tape, coin, etc.) has got on the shaft. In this case, getting rid of the stripes is not difficult. It is enough to remove the foreign body.
  • Faint black stripes stretch across the sheet? This does not bode well. This is often caused by wear on the magnetic shaft. You can correct the situation by replacing the assembly or cartridge.
  • Dark stripes on one or both edges of the sheet. They indicate wear or damage to the drum unit. Most likely, you will have to change the part. The fact is that over time, the sensitive layer of the drum is erased, which, to put it mildly, is problematic to restore.
  • Irregular stripes fill the entire sheet (looks like a background). Poor quality toner may have been used when refilling the cartridge. Another potential cause of this print defect is a dirty magnetic roller or printer optical system.
  • Horizontal and nearly equidistant stripes. Most often, the problem lies in poor contact between the magnetic roller and the drum. Perhaps toner has spilled, the ink waste bin is overfilled, or a poor-quality cartridge refill is to blame. It is recommended to clean the shaft contact and other surfaces. If this does not help, then it makes sense to install a new cartridge.

As you can see, nothing is difficult. At the same time, it is often easier and faster to eliminate streaks when printing on a laser printer than on an inkjet printer. If the device produces stripes on printed paper, then you just need to pay attention to their shape and appearance area, and also check:

  • Toner level;
  • Serviceability of the drum unit;
  • Cartridge status;
  • Dispensing blade position;
  • Fullness of the mining bunker.

Laser printer

If a black line occurs when printing on a laser printer, there may be several reasons for the defect.

  • The toner ink has run out. When ink runs out, the product will most often print documents with white gaps or smudges. The printer leaves black streaks in different places of the sheet when printing only in case of a malfunction. To complete an urgent print job, you can gently pull out the cartridge and shake it lightly so that the remaining powder is evenly distributed over the entire inner surface. This will help restore the device to work for a short time. Thus, approximately 30-50 pages will be printed. You can replace the toner yourself, or take the cartridge to a specialized center;
  • Fotoval wear. If there is enough ink but the product leaves horizontal streaks or streaks on the side of the paper, the problem may be due to wear on the supporting elements. This malfunction is detected by visual inspection of the cartridge. If spots, scratches or other mechanical damage are visible on the surface of the photo tube, it will need to be replaced. If there are no visible changes in the surface of the shaft, try to correct the operation of the printer using a special printer management utility. Enter the service section and select printhead cleaning with nozzle check;
  • Wear of the image fixing unit. Elimination of such a malfunction is possible only at the service center by replacing the failed parts;
  • Dirt getting on the light-sensitive drum. This problem can be solved by completely sorting out the part and removing the adhering dirt from the light-sensitive coatings. If the conductive grease on the contacts of the photo roll has dried on, you will have to completely replace it;
  • The metering blade is worn. In this case, the entire cartridge must be replaced.

The printer leaves a black line when printing and how to fix it

Sometimes the printing equipment breaks down. Depending on the type of device (laser or inkjet printer), the elimination of the problem has its own individual characteristics. A black streak may appear on the side, or the printer may leave horizontal streaks along the sheet. Such defects can be found in Canon and Brother equipment malfunctions.

Jet printer

If an inkjet printer produces black lines when printing, then the possible causes of the malfunction could be:

  • Low ink. To solve the problem with horizontal or vertical streaks on the side, enter the device control dialog and check the ink loading level. If there is a lack of resource, then the cartridge should be replaced;
  • Clogged nozzles on the print head. If the test shows that there is enough ink to print, but the product still produces streaky sheets, enter the Maintenance section and equalize the print quality by running the cleaning program. Alternatively, you can try manual cleaning;
  • Wear and tear on the print head and other serious damage. Usually it is not possible to eliminate this kind of malfunction on your own. You will need qualified help from an experienced technician who can set up the equipment and set up the printer for normal printing.

A horizontal black line when printing with Canon and Brother printers may be due to head clogs. In the models mentioned above, they are located in the cartridge, and in the Epson’s. inside. If you are unable to independently determine why the printing device is producing sheets with horizontal stripes on the side, contact a professional for help.

TOP Vertical stripes around the edges? Drum (photo drum) wear!

Probably the most common problem caused by running out of drum life. Often found in cartridges that have been refilled with toner several times.

If this is your first time refilling the cartridge, then most likely it will be enough to wipe the drum unit with a clean cloth. Detergents, in this case, must not be used, so you will only harm!

Why does an inkjet printer strip

If you print a lot, have not refilled or replaced inkjet printer cartridges for a long time, then the cause of all troubles may be low or no ink levels at all. Different models allow refilling ink tanks, but there are those that require a complete replacement of the cartridge. In the second option, solving the problem will be much more expensive. Please check with the service center for your model.

Special utilities that are installed from the disk supplied with the new printer along with the drivers will automatically begin to notify the user about the ink level. If this does not happen, then you can do this procedure yourself.

The second option for checking the level can be inspection. To do this, unplug the printer and open the top cover. Remove each cartridge in turn and inspect. For CISS, this is the only check option.

Dry nozzles or print head nozzles.

Quite a common occurrence for old and some new models of inkjet printers. The essence of this variant of the problem lies in the drying or thickening of paints due to a long downtime. Depending on the model and manufacturer, even one week of time is enough for trouble to arise.

Paint for a “jet” is not just a liquid of a certain color, but a full-fledged chemical substance with its own properties and storage rules. If you do not adhere to them, the result is known.

But not everything is so hopeless in this difficult situation. In this case, the owner of the printing machine has two solutions:

  • Program. It’s easier to use, but doesn’t always help. As a rule, only in the simplest manifestations of drying.
  • Physical. You will need to revive the cartridges manually using additional tools.

Alternatively, before using any of the methods, you can try to soak the cartridge. Remove the cartridge and gently shake it several times. Spread a napkin or sheet of paper on the table and press the cartridge down against the table using the nozzles using light pressure. Press on both sides with your fingers if possible. It is desirable that the paint comes out a little.

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If this procedure is not successful, then proceed to the programmatic method. Open the printer properties and select the “Maintenance” tab.

Follow the first two steps on the left in turn. Deep cleaning can even be done several times. This procedure will not damage the device in any way. For prophylaxis purposes, if there is time for this, we advise you to perform all possible procedures that directly relate to print quality. Try to print the desired drawing or document again. If the problem persists, then go to physical impact.

The problem in nine out of ten cases is relevant for printers equipped with a continuous ink supply system. In this case, you need to check the pipes and loops, as well as the air filter for clogging, as well as kinking. It is the ingress of air into the tubes that makes it impossible for the ink to flow evenly into the head, which causes gaps that transform into streaks during printing. And the lack of air in cans with CISS paint, due to clogging of the filter, makes it difficult for the entire paint delivery mechanism.

Carry out cleaning according to the instructions for your system.

The problem is very relevant for Epson L series printers, namely models: L110, L120, L210, L222, L366, L800, L805.

Physical problems in the printer.

In addition to an inoperative cartridge, the reason why the printer prints stripes along the edge may be physical damage to some elements of the device. These elements include the encoder loop or its disk. This unit is responsible for determining the coordinates of the position of the sheet during the printing process. If it does not work correctly, it does not give errors, but the printer strips because of this when printing very much.

Photo of the disc. May vary slightly from model to model.

Such things happen after paint gets on the train itself or the disc. After many years of use, the disc can simply be worn out. With such a development of the situation, only its complete replacement will help. Paint contamination can be easily removed with a regular napkin. Try it dry first.

Service center specialists do not recommend using liquids other than plain water

We recommend that you entrust the replacement of the disc to specialists if you do not have the skills to repair equipment.

Problems with the device software.

Rarely, but it is the cause of black and white stripes on the sheet when printing on the printer, the incorrect operation of the software of the device. During operation, they can be damaged by the user, viruses, due to a power outage. When none of the above helped, then reinstalling the driver is the only remaining option.

Download drivers only from the databases of manufacturers’ websites in order to avoid infecting your computer or laptop with viruses or unwanted programs. Where and how to download, as well as installation options are described in detail in our separate article.

TOP Dots with stripes in a chaotic order? Check the dispensing blade!

Small dots all over the sheet accompanied by vertical streaks can indicate three potential printing problems caused by:

  • an incorrectly installed dispensing blade (needs to be corrected);
  • Overfilled waste toner box (clean it)
  • low-quality toner, or refilling the cartridge with new dye powder, the remains of the old one have not been disposed of (you need to replace the toner).

Causes and solutions to problems with the laser device

The reasons when a line or several appear when printing on a laser printer are much more and they are more expensive to eliminate. Let’s take a closer look at what affects the appearance of stripes during printing and how to fix it. Remember that you may have several breakdowns at once and the elimination of one will not guarantee the result.

The simplest and most commonplace reason is that there is little remaining toner in the cartridge. The toner consumption varies depending on the intensity of the print and the amount of black on the documents. Accordingly, the number of printed sheets at one station will not always be the same. White streaks are a sign of low powder. Shaking the cartridge may be a temporary solution to the problem, but sooner or later this will stop helping. Refueling is inevitable and the only thing that will fundamentally solve the problem.

Example of Low Toner Printing.

It is recommended to fill with a certified powder suitable for your model. If you plan to refuel yourself, then first find a room for this where there is good air circulation or there is a possibility of ventilation.

Remember that laser toner is toxic.

The drum is the most visible part, as the plastic of the cartridge is black and it is green. It is also called a drum or photo drum. Covered with a special coating in green and sometimes blue. Fotoval does the most important part of the printing process is the application of toner directly to the sheet of paper.

Example of drum wear.

The very first sign of wear will be black streaks on one or both sides of the printed sheet of paper on the side. Over time, the strip width will increase in proportion to the wear on the shaft cover. If you move the shutter, you can visually see it. Wear of the coating is normal and affects all cartridge models.

Service center specialists recommend immediately replacing the part in order to ensure that other cartridge assemblies are not damaged.

Example of printing a worn out photo roll.

The imaging drum with the magnetic shaft are in close contact with each other, therefore, high-quality contact between them is very important. If you notice that the printer prints on a sheet with horizontal black stripes, then this may be a sign of poor or no contact between these two parts.

Damage or leaks can be judged from the appearance of the strips on the example of a sheet. If these are black lines of different sizes and thicknesses, and are also unevenly located, then with a high probability this is the option. The following manipulations with the cartridge should be carried out:

  • Remove from printer.
  • Inspect for cracks and loose parts. Check the places where the bolts are screwed.
  • Shake lightly and then see if toner spills.
  • Slide the shutter near the fotoval and check the presence of powder on it.

In case of detection, eliminate places of leaks and depressurization.

The design of the cartridge for the laser printer includes a special hopper, which automatically receives waste toner. This compartment can overflow and then some of the powder begins to fall outside, and, therefore, forms a solid black strip of large width on the sheets of paper.

To avoid such a development of events, we recommend that you clean the waste after each refueling or once every two procedures of toner replenishment.

Magnetic shaft and blade problems.

Magnetic shaft.

The magnetic roller is one of the most important parts of the cartridge and is responsible for applying toner to the drum. The toner itself is a chemical that affects the coating of the magnetic roller. Over time, the latter pretty much wears out, which leads to problems. They can appear in this form:

  • Irregular white stripes.
  • Shades of gray in different sizes. It can be lines, circles, spots, dots.
  • Gray stamp black text.
  • Uneven fill in solid drawings.

A malfunction of the dispensing blade is often the cause of these print defects. Often it is replaced with a magnetic shaft.

TOP Chaotic stripes and artifacts? Eliminate cartridge leaks!

If the tightness of the cartridge is broken, fix the problem by checking the integrity of the sealing gum, without which, most likely, toner spills.

Have you taken all the necessary steps and the printer still prints in streaks? Contact the MosToner service center for help. 24/7!

Black lines along the entire page, explaining the reasons for their appearance and how to eliminate them.

Your printer leaves black streaks along the entire page when printing?

These black lines when printing are a very unpleasant phenomenon, especially when you urgently need to print an important work or contract, and this unpleasant moment happens when we do not have time to deal with this problem.

This problem is one of the most common faced by almost every user of a laser printer or MFP.


There are several possible reasons for the appearance of longitudinal black stripes throughout the sheet, as well as pale spots, and there is a reason for each of these faults. Let’s first define what exactly you have?

Black lines or paths from top to bottom along the entire sheet, they can be either to the right or to the left, less often they are located in the center.

Missing areas when printing, just a white blank spot where the text should be (it happens most often somewhere in one place on the sheet and is always repeated, or not).

Black dirty spots from toner on a sheet of paper, they can also be repeated all the time in the same places on the sheet.

In any of the above cases, the first thing to do is to run the Printer, Drum, and Fuser Cleaning Wizard. All this is in the system menu of the printer, cleaning can be started both from the console of the device itself and from a computer. Now, after cleaning the printer, everything remains unchanged, then proceed to the next steps:


Cause: Inside the printer, a sheet of paper is moved by rollers and a transfer belt, which is a piece of film. So, longitudinal lines along the sheet may appear due to their contamination or coating with excess toner powder of these elements, and accordingly, when the paper moves along them, our unpleasant lines remain.

Decision: You can follow the next set of procedures to try to fix the problem.

Use a lint-free cloth, rubber gloves to prevent toner from getting on your hands, isopropyl alcohol, and a soft brush to gently clean the rollers that you can easily reach;

Vacuum (gently vacuum cleaner not at full capacity) remove visible toner particles;

Use a lint-free cloth to wipe the transfer belt very gently (not all printers have it);

If after doing this, the problem persists, then only replacing the transfer belt will fix the problem.

Warning: do not touch the transfer belt with your fingers, you can leave your fingerprints on it, which can also have a bad effect on further printing.

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Remember, you need to be extremely careful when cleaning the printer, but if you are not sure, then it is better to contact a specialist who already has experience in cleaning the printer.

MISSING PRINT AREAS (either always in the same place or not)

Cause: there are several possible causes, so we need to check each of them in the troubleshooting process to find it, but in most cases the problem is caused by the wear of the drum unit (drum cartridge).

The principle of operation of a laser printer is that a beam throws an image of what you want to print onto a photo drum (metallic green shaft) or, as it is called, a drum cartridge or photoconductor. Then this shaft turns and transfers the fixed toner onto the paper, and then it is thermally “baked” on the sheet, in more detail about the operation of the laser printer, we described here.

If the drum is damaged in any way or has fingerprints, dirt and other foreign matter, then this can lead to a blockage of the fixing of the powder on its surface, which is what the white. blank prints on the sheet tell us.

Another reason that causes white spots on the print may be damage to the fuser.

Fuser is a component part of the printer, which, like other components, has its own print resource, it is responsible for “melting” the toner (powder) or, more simply, for fixing it on a sheet of paper.

Decision: Unfortunately, this technical part of the printer cannot be cleaned so easily and easily, but the following steps can help fix the problem:

Replace the toner cartridge, it may already be finished and a small amount of toner powder may cause this problem;

Replacing the fusing unit (oven, fuser), this is unfortunately the most expensive part in the printer, but its resource is also impressive over 100,000 pages.

Warning: Never touch the metal cylinder (drum unit), and remember, if you are not sure, then call a professional.

DIRTY SPOTS ON A SHEET OF PAPER (either always in the same place or not)

Cause: your printer gave you a sheet of paper from printing on which there are dirty, black spots, this indicates that there is a problem with the drum or with the rollers.

This reason is very similar to the drum wear we described above, a fingerprint or dirt on the shaft, which smears the toner on the page as it passes through the fuser.

We will clean the rollers with a brush or vacuum;

We will replace the toner cartridge, if we have a spare one, it may be faulty or has already exhausted its print resource;

One of these steps is guaranteed to eliminate the problem of “dirty” pages when printing. Be careful and accurate in carrying out these works, and if you are not sure, then calling a specialist will be the best solution.

It also happens that a white, blank sheet comes out when printing!

You can be immensely impressed by focusing on getting a beautifully printed document out of the printer now and a white sheet in the end. Or a sheet with poorly visible text.

This is the least common problem, I haven’t really focused on it, but don’t worry, I’ll be here and will also write about it.!

Faint or missing prints may be caused by the cartridge not snugly fitting to the drum, not fully seated in its place, not fully snapped in.

Here’s one way to fix it:

Visually check the cartridge or drum for protective tapes and shipping seals, have you removed any excess, have removed the protective tape if any, and all orange plastic “pieces” should be removed.

We hope that you have carefully examined everything, removed or pulled out what you forgot to remove and got a high-quality and beautiful print. This method, of course, was suitable for the new cartridge that you just inserted, for any other it means that the cartridge is already out and needs to be replaced.

There can be a large number of printing problems and, as a rule, they often arise on their own, and sometimes immediately after refilling the cartridge. One of the most common is to print with stripes along the edge or center of the page. The stripes can be black or white. The problem affects devices of different types and manufacturers, and most often from Epson and Canon. Less to this the slopes of HP and Brother.

Why this happens and what to do if a laser or inkjet printer prints with stripes, we will explain in detail in our article. Here you will find troubleshooting instructions for different models and brands of printers. Consider the most common causes of stripes on paper and their solutions.

TOP Horizontal black stripes? Cleaning the waste toner box and checking the magnetic roller contacts!

The solution to the problem of horizontal black streaks is that you need to clean out the waste paint hopper and then check the correct positioning of the metering blade and squeegee.

Be sure to also correctly install the contacts between the drum unit and the magnetic roller.

Does the laser printer print in stripes and third-party artifacts? Solving the most popular problems!

Sometimes it happens that laser printers begin to produce stripes, blots, dots or other third-party artifacts on the sheets during printing.

The causes of such problems can be caused by both low-quality toner and problems with the cartridge:

  • incorrect assembly of the consumable after refueling;
  • drum wear;
  • depressurization of the bunker with paint, etc.

Also, many inexperienced users who prefer to do everything with their own hands often refuel the cartridge “to the bitter end.” And this, in turn, leads to the failure of its individual units and parts, which negatively affects not only the quality of printing, but also the performance of office equipment as a whole.

Therefore, today we will tell you why you have streaks when printing on a laser printer, and also share recommendations on how to get rid of this.

Damage to the drum unit

The drum or photoreceptor is the main part of the cartridge; it is a shaft made of aluminum with a special coating that is able to perceive optical radiation. During the operation of the laser printer, the light-sensitive coating is erased, which entails the appearance of printing defects.

A signal that the photoreceptor is damaged is the appearance of gray-black stripes shifted to the edge of the paper and having a wavy shape.

gray stripes when printing

The solution to the problem will be to replace the failed part of the cartridge, that is, the drum unit.

“Striped printing” can also be associated with such a common problem as drying out of the photoreceptor lubricant. The defect occurs if the printer has not been used for a long time. The “Drum Cleaning” self-cleaning program will help to solve the problem, which can be found by going to the “Printers and Faxes” menu.

White streaks when printing

If the printer prints white streaks, it could mean that the ink cartridge is out of ink or there is a problem with the laser.

An indication that a cartridge has run out of toner is a vertical white stripe along the entire length of the page, which increases in width with each subsequent printout. It is important to remember that if the printer is out of toner, do not remove and shake the cartridge; these steps will not solve the print quality problem, but may damage the drum unit. The way out of the situation is refilling the cartridge.

If toner is present in the cartridge, a problem with the laser may be the cause of the white streaks. For example, the ingress of particles of toner, insects or just dust on the optics. To avoid a defect, you need to regularly monitor the condition of the printer, clean the mirror of the laser scanner from dirt with a smooth, lint-free cloth.

Lost contact between magnetic roller and drum

Black transverse stripes may indicate that there is no proper contact between the magnetic roller and the photosensitive drum. The lack of charge between the parts of the cartridge, as a rule, leads to dirt adhering to the contacts.

Solving the problem. cleaning the cartridge.

Leaky cartridge

Banding all over the page, appearing in different places. The cartridge itself is most likely the cause of the print quality degradation. The first step is to remove the cartridge from the printer. If toner spills, make sure there are rubber bands and no mechanical damage to the case (cracks). If there are uncorrectable defects, replace the old cartridge with a new one.

Malfunction or wear on the metering blade

The dispensing blade is an integral part of the cartridge, by means of which the amount of toner delivered to the magnetic roller is controlled. The reason for a malfunction of the dispensing blade may be the use of low-quality paper for laser printing, this leads to the fact that the fibers of the low-quality paper adhere to the dispenser blade, the magnetic roller in the place where the fluff accumulates cannot pick up ink, when the document is printed, a vertical white strip appears along whole print page.

To restore the print quality, check that the dispenser blade is installed correctly, if necessary, clean the surface of the dispensing blade with alcohol. If the part is worn out, it will need to be replaced.

Does the printer print in stripes? 9 reasons and their elimination

During the operation of laser printers, users quite often face the problem of a decrease in print quality, namely the appearance of horizontal or vertical stripes when printing documents.

There can be several reasons for the decline in laser print quality:

  • toner is low;
  • laser problems;
  • damage to the drum unit;
  • damage to the magnetic roller;
  • violation of the contact between the magnetic roller and the drum;
  • the metering blade is installed incorrectly;
  • cartridge leaks;
  • the mining bunker is overcrowded;
  • failure of the charge roller.

Streaks can also be caused by damage to the cartridge due to dropping, low-quality toner, or improperly refilled cartridge.

Damage to the magnetic shaft

The functional purpose of the magnetic roller is to transfer toner from the hopper to the photoreceptor. The quality of laser printing is directly dependent on the uniform supply of toner to the photosensitive drum. Excessive gray background or the presence of horizontal dark lines indicates degradation of the magnetic characteristics of the shaft.

The way to eliminate the defect is to replace the magnetic shaft.