Why the printer prints with black spots. Why the printer smears when printing?

During printouts, various defects on paper sometimes appear. This can happen both with jet and laser unit. And with any model of printers. Even observing all the necessary requirements of the equipment, you will not insure them. But do not immediately carry the equipment for repair. You can try to resolve the problem yourself. Black dots damage the documents during printing and forced to redo them over and over again. What does this mean? What breakdowns in the printer can lead to the appearance of points? We’ll figure out.

If the page goes to the point when printing, this indicates problems with the knots in the printer. It is worth watching in advance photos of pages with possible problems. Consider separately each breakdown and give recommendations for their elimination.

Varieties of defects. Ways to eliminate them

If defects appeared on the sheets, the first thing the printer is subject to a thorough inspection.

  • The points are located in various areas of the sheet. It is worth checking the surface of the drum. Pollution may come to it. They are printed in the form of dots or sticks on a document. You can eliminate the problem yourself. Disconnect the technique from electric power. Open the lid and remove the cartridge. Wipe the drum without a gorses soft rag. Take a cotton wool and wipe the upper part of the compartment in the cartridge.
  • The entire vertical page is crossed by points. Inspect the cartridge and drum. After the refueling procedure on the cartridge, dirt or a baked toner may remain on the cartridge. In this case, it is necessary to completely clean the soft surfaces. If the cleaning procedure has not helped, and the sheets are still released to the point when printing, it is necessary to carry out a full cleaning of the cartridge. In addition to pollution, it may be damaged.
  • Defects appear along the page at a short distance from each other (3-4 cm.). The magnetic shaft is subject to verification. Dirt can stick to it. To check this, the shaft in the cartridge should be turned 180 degrees. When changing the position of points on the page, we can conclude that the problem is precisely in the contamination of the shaft. The equipment should be cleaned with a soft, without gate cloth. At the same time use a special cleansing solution.
  • If the distance between defective elements of about eight centimeters, the cause may be hidden in the pollution of the photo bank. It is recommended to clean its surface with a solution. Using a pile napkin.
  • Points “decorated” paper within a black, wide strip. New photo boards are covered with talcum. This tool remains on the surface of the part for a long time. And leaves traces on the sheets. It is recommended to immediately clean the new drum after unpacking.
  • Small slices on the entire sheet. The cartridge is not a suitable toner. Unfortunately, in the service they can confuse paints. You should go to the master who has seasoned the unit, and demand the replacement of the toner with the corresponding to this cartridge.
  • White points when printing. They may appear after replacing the toner, for example, in the laser model HP. White defects are formed throughout the sheet or in its individual areas. The reason can be different: not high.quality toner, flushing the system with a fat agent. In such cases, you should replace the paint or wait until the remnants of the oily mixture are completely released their details. If there is no time to wait, it is recommended to rinse the cartridge with a more stringent means. It is better to contact the service with this problem.
  • White dot on the page, as it were, pushing paper. This appears due to too much pressing with videos. The reason is the discrepancy between the thickness of the paper. On the sublimation page of ink are not absorbed and remain on the surface. It is recommended to change the paper for matte.
  • Vertical defects in the middle of the page. If the toner is sticking together, and its pieces stuck to the dosage blade. This blade is in the cartridge. To get rid of vertical points, you need to open the cartridge, and clean the blade with a soft cloth.
  • The appearance of vertical, black spots. They can be of different diameters, but, most often equal. This speaks of the complete wear of the drum. The part should be replaced with a new.


The most common reason that the HP printer prints black sheets is the light of the photo bank. an element of the cartridge, where data is received from the computer for printing. Why is photoval stopping working? It has high photosensitivity, so the slightest hit of light will provoke a breakdown on it. When you have to remove the photo drum or change the toner, all the necessary actions are carried out in the dark room.

What can be done to solve the problem if the device prints with failures?

  • Purchase and install a new photo bank, since its repair requires significant expenses.
  • Independent restoration of the sensitive layer is not excluded, so you should be patient with patience.

Clogging of the contact part

The laser printer cartridge has metal contacts in contact with the contacts of the power supply. When they are very polluted, the HP, Canon or Samsung device prints black sheets. Therefore, the contact sites must be inspected and wiped.

Some HP, Canon or Samsung models give out black sheets due to the stuck of spring-loaded contact, which happens after the frequent removal of the cartridge. As a result of illiterate use of the ink container, the contact is simply twisted by 30 degrees.

Independent solution to the problem

In some cases, an ordinary user, which does not have supernatural knowledge, may try to correct the problem.

Performing a simple procedure will not hurt the device and will not take much time:

  • Prepare several dozen sheets of office paper. It is not necessary that they be clean. Already used drafts are suitable;
  • Create a clean document in a graphic editor without any text;
  • Load the sheets into the device;
  • Put an empty document for printing in 25-30 copies;
  • After such a lease, printing heads usually stop smearing paper.

Modern models announce any problems with special light codes. As a rule, such an alarm is displayed on a light bulb located on the front panel of the device. Looking into the operating instructions, you can find out what the specific sequence of flashes and pauses mean.

Laser printer smears when printing: what to do?

The malfunction can be found not only on cheap matrix and jet models. Expensive laser devices are also subject to defects.

Among the most common reasons for this situation:

  • Poor.quality toner. As an experiment, it is necessary to replace it. If the action has an effect and the seal returned to the normal course, then it was precisely in the inklita;
  • It is impossible to exclude the possibility of falling into the inner part of the apparatus of an outsider;
  • A rocket knife was worn out (an excess of paint is designed to cut);
  • The container with a spent toner is crowded;
  • Uniform stripes along the entire length of the sheet indicate a malfunction with a charging shaft (transfers a negative charge to the surface of a rotating drum);
  • On devices under the brand “Brother”, the packing of documents is the first bell that announces the breakdown of the optical system. The focusing device or a conflicting element can be affected;
  • If the output is obtained by a paper painted with repeating “patterns”, the repair of galvanic contact is necessary;
  • Spots speak of wear of a photosensitive drum.

The printer is a necessary type of technique that almost every computer owner or office worker uses. So that the technique can last as long as possible and does not spoil the printed information, it is worth performing some preventive measures, as well as to use the device correctly and carefully. In the absence of experience, a smearing printer is best attributed to repairs to the workshop. Experts strongly recommend that the owners of the printers not begin to independently repair the equipment in such cases:

If the disassembly of the printer with your own hands before visiting the workshop is inevitable, it is necessary to cover the photo bus from the lighting with thick dark paper.

Before starting the disassembly of the unit, it is worthwhile to de.energize, and you can start work only after complete cooling.

Solve 100% Free Any Laserjet Printer Lining Issue Problem At Home | Simple & Easy Just Few Minutes

Cleaning equipment from the inside is possible using a brush or vacuum cleaner. So that the printer does not stain the paper with ink, the user must remember such rules:

  • put the right settings on the equipment or leave the factory;
  • Do not violate the operating rules that the manufacturer outlined;
  • on time and on a regular basis, carry out preventive repair measures;
  • During your own shift of the cartridge, to be neat;
  • use only high.quality tools for cleaning equipment and consumables.

About why the printer stains the sheets when printing, watch in the next video.

What to do?

To solve the problem, you need to build on the type of printer.


Inkjet printers are seasoned with liquid ink. When they end, you can notice a change of shades. For example, instead of black text, the printer prints blue, horizontal gaps or white stripes appear, dividing the letters into 2 parts. Sometimes the printer completely prints pages with transverse stripes over the entire surface of the sheet. Such a problem indicates the overflow of bunker or the need to replace a rocket.

Sometimes you have to change the deformed shaft, in other cases it is enough to get rid of an extraneous object that has fallen on it.

In other cases, it is necessary to inspect the integrity of the thermal. Toner should not wake up from the cartridge. Check this is not difficult: you need to remove the cartridge and shake slightly. If the hands are painted black, you will have to replace the toner with a new. Otherwise it will not work to fix the problem. However, before you do something, you need to take into account: the methods of eliminating the problem of jet and laser printers are different.

printer, prints, black, spots

First you should understand the methods of independently eliminating a defect in jet printers.

  • Checking the level of ink. If the jet device gives out sheets with stripes when printing, you must stop the seal and season cartridges. You can’t ignore the problem, without paint it will not work to conduct a duz test. In addition, the absence of ink will lead to burnout of the snot. To do this, find software, install and launch the program. Next, open a tab with a pattern of ink capsules. It can be called differently (“approximate levels of ink”, “level of ink printer”). To diagnose ink levels, they use the print control panel. Visual assessment will make it possible to understand which ink needs to be replaced. Usually at a critically low level appears a notifying icon in the form of a yellow triangle.
  • Diagnosis of SNPCh. If after refueling the cartridge nothing changes, stripes appear on the paper when printing again, you need to check the SNPCh (the system of continuous ink feed). It is important to make sure that the ink train is not pushed. If the system is not pushed, check the filters of air holes. If they are clogged, their throughput is violated. It is necessary to remove dust and dried paint. If they have become unusable, you need to replace them with new.
  • Dyuz testing. If after the check there are no problems with inkwells, but at the same time the printer prints with stripes further, it is necessary to test the dozen. To do this, go to the “start”, then choose “devices and printers”, find their printer, press the right mouse key and choose the “Printer Properties” item. In the window opened, pressed on the “Settings” item. After that, they go to the Service tab, and then select the “Checking DYUZ” item. However, the testing scheme may depend on the type of printer. Modern models provide for testing in the device itself. The test algorithm depends on the model, it is indicated in the instructions for a particular product.
  • Cleaning the print head. Paints used in jet printers dry faster than in laser analogues. With a long simple appearance of stripes when printing. a frequent phenomenon. Ink can be clogged with dose in 2 weeks of downtime. Sometimes the print head clogs in 3 weeks. To solve the problem in the installation program, there is a special utility “Cleaning the print head”.

This procedure saves ink consumption. If you forget about it, the ink will begin to wash the nozzles on their own during the subsequent printing, consuming the cartridge. The cleansing procedure can be carried out at once 2-3 times. After that, you need to let the printer cool down without touching it for 1-2 hours. If this does not help, then the head will have to be cleaned manually.

If the dose or nozzle of the print head has dried up, you can try to solve the problem with a software or physical way. You can try to soak the cartridge. For this it is taken out, put on a napkin on the table. With a little effort, it is pressed to the table with the dose, trying to press with their fingers on both sides. If this does not help, and the paint does not act, you need to try out the software way to eliminate the problem. To do this, open the “Printer properties” and choose the “Service” tab. Then the first 2 tabs are alternately selected (“cleaning” and “deep cleaning”).

If the commands “Checking the DUZ” and “Cleaning the print head” do not give a result, you can try to rinse it with a special liquid. If this does not help, only the replacement of the cartridge remains.

The reasons

Cases when the printer prints black sheets instead of a normal impression is not so often found, but not a single owner of the All-in-One Printer, jet or laser technology is not safe from them. In most cases, the breakdown is hardware, and its elimination involves a visit to the service center or replacement of parts.

The malfunction is found in color and black and white devices.

If printing equipment spreads the background to the entire sheet in continuous color, the reason is most likely one of the following factors.

  • Light hit on a photo bank. If the printer recently visited the repair, serious mistakes could be made when removing this element. Also, the photo bank is out of order, if inaccurately handle it when replacing the cartridge, the operation of office equipment itself. Any contact with a direct source of artificial or natural light can cause damage to a sensitive coating. If the printer gives out a completely black page, then the first thing to check is precisely the photo bank.
  • Violation of contact in the control panel. It is located in the device case, has its own processor, ROM and memory block. If the printer periodically began to make errors when printing, it makes sense to check this element. In addition, there is a contact element on the cartridge itself, which can also be oxidized.
  • There is no charge video in the cartridge. A detail with similar functionality in some laser printers is also called a shortboard. If, after replacing the paint or repair, the device stopped printing normally, it is worth checking if all the elements were installed in its place.
  • The high.voltage block is faulty. If, when rearranging a cartridge to another similar device, it works as usual, the problem is most likely in it. For accurate diagnostics, you will have to contact the service center.
  • The cartridge is damaged, not sealed. Usually in this case, we are always talking about normal printing of the first prints. Then the toner or ink pass through the previously tight shell, dosing is disturbed. Instead of normal prints, spots or continuous black sheets appear.
  • Paper was not chosen. If on the sheets of one pack, the image comes out normal, and on the others an exclusively black background occurs, it is worth checking their purpose. If, instead of special paper, the printer enters the one that is designed for fax, it will not work to wait for the normal impress.

These are the main reasons why difficulties can arise with the appearance of a continuous black background on the sheets of paper when using a printer.


Understand what to do if instead of a color print the device for printing is given only by a black background, you can with the correct diagnosis of the problem. For example, with the wrong choice of paper, it will not be difficult to eliminate the malfunction. The fact is that a completely black sheet occurs with thermal effect on the surface of the paper for fax. It is enough to replace the wrong packaging with the one that is intended for printers, and the problem will completely disappear.

Bad contact in any of the printer blocks is a completely fixable thing. If other stages of diagnosis of problems have not identified, it is worth focusing on this malfunction. First of all, it is necessary to pay attention to the correctness of the position of spring.loaded contact. If, when turning at 30-40 degrees, it takes the right position, most likely there was a problem of mechanical property. In the absence of visible distortions, you will have to clean the contacts inside, already with the removal of the body cover. if there is a guarantee, you should contact this in the service center.

When the reason for printing black sheets is a photo bank. the main receiving element when receiving data from a computer, there are 2 options for the development of events. The first allows you to count on the natural restoration of the functions of this part over time. With “highlights” this happens, but not all owners of equipment have time to wait. The second implies the replacement of a defective element. it is not cheap, but comparable with the price of repair.

Poor cartridges are another source of problems with the seal. The appearance of a black background is especially often occurred when replacing the original HP, Canon components with cheap analogues. It is bad that a leak cartridge or a scattered toner may be on the details inside the case.

In this case, you will have to not only change the consumables, but also carry out additional service equipment maintenance.

Lack of charge video is a fairly common problem after visiting the service center. If the printer recently went to planned service, it is worth clarifying if there are unnecessary details left in the workshop. Particularly carefully, the print quality should be checked during the visit of a private specialist working with a departure to the customer. After installing the cordon of the charge, all problems with the release of black sheets will disappear.

When a jet printer prints black, the problem should be sought in a print head. It should be washed in a hydroacoustic bath. If the problem occurs often, replace ink.

Problems of printing ink under pressure

Some All-In-One Printer, printering and HP plotters use inputance under pressure. 3 varieties of ink feed systems are common:

  • In the system, pressure is created by ink pumps in cartridges (for example, HP Officejet 8000, 8500, 8500A);
  • In the second system, the air pump pumps pressure into the cartridges, pushing the ink into the head (for example, HP Officejet 8100, 8600, 8610, 8620, 8630, 8640, 6100, 6700, 7600, 7610, 7612, T120, T520 plotters);
  • The pump stands between the cartridges and the head, pumping the ink back and forth (HP C5180, C5183, C6180, C6183, C7280, C7283, C8180, C8183, C8253, D7160, D7355, D7360, D7460).

Device and problems of hp 940 88 72 heads

A feature of the printing heads of NR 940, 88, 771, 72, 10, 11, 12, 14, 80, 81, 83 is their mandatory initial filling with ink. Otherwise they will not work, because they have a mechanism for self.regulation of their number. If there is no ink, then there is no regulation. The paint leaves the head, and it begins to dry, and also hardens the pigment in the tubes.

Cleaning of such heads is performed only after filling them. Typically, the price of cleaning 1 head, which is responsible for 2 colors, is 2000

It should be noted that thin tubes can hide with a thickening mass of pigmentive ink. If this happens, the tubes need to be pumped. But this is a long and complex process.

Boiling systems can make their contribution to a malfunction of the ink systems (for example, HP 940).

The problem occurs with a malfunction of the pump or air entering it. If the head dries, the printer will not be able to clean it. All-in-One Printer was brought to us with compatible HP 940 cartridges, which were without a pump at all. In principle, they could not work correctly.

White or black horizontal stripes of a jet printer

These are questions of horizontal justification or alignment. Horizontal defects in jet printers occur due to the error of the vertical movement of the sheet relative to the head. For example, we need to fill a rectangle. Ideally, behind the lower part of the raste of the head in one direction, should immediately go to print the press in the other direction. However, in reality, due to the error of the hand drawing mechanism, we have the following (for clarity, we shift the right and left passage).

An ideal case is depicted from above. in this case we have the perfect fill and perfect quality. In the middle, the case, if there is a gap, we get white stripes between the rectangles, as with the dried heads of the head. The lower pattern corresponds to the supervision. in the pictures with halftones, we again get black stripes in the image. Vertical alignment is designed to adjust the displacement of the vertical feed of paper and strip when printing.

Printer with SNPCh prints in stripes

Empty dampers and heads

The printer can print with stripes if it has SNPC. SNPCh is a system of continuous ink feed. over, all printers with SNPCh sooner or later are faced with the problem of printing with stripes. This applies to all printers with SNPC. Epson, HP, Canon, as well as Brother. And it does not matter at all whether the damper is used there, as in Epson printers, or the tubes immediately connect the head to the tanks.

At a certain moment, the dampers and heads will turn out to be empty. From this moment, the printer begins to print with stripes. Dovers need to be filled manually. Until they are filled, the printer will break.

If the seal with stripes is not eliminated, then the head begins to suffer. Firstly, it begins to dry out and it will already need to clean the head. Secondly, in the absence of ink can degrade and even burn. For example, printing heads of Canon printers.

The black rectangles on the left shows that two Canon G3400 heads were degraded. black and colored. In the black photo of the part at the very bottom, it is clear that the pouring heterogeneous from above and below the intensity is dense. And in the middle the printer prints pale. Therefore, homogeneous fill will turn out in waves.

To restore quality, only replacement of the head is required. No cleaning will help.

Other problems of SNPH

The presence of SNPC usually only worsens the quality problems for the following reasons:

  • Increased hydraulic resistance worsens the supply of ink.
  • The lower location creates the reverse pressure, which after printing takes the liquid to containers, and also sucks air into the head. To minimize additional difficulties, you need to monitor the level of paint and the height of the location of the containers relative to the head.
  • But with a high level of containers, all ink can flow into the printer and pour it.
  • It is necessary to regularly check and replenish the level of paint in the damper. Dampfinters and leaks in it increase the probability of printing with stripes.

Problems printing laser printers

Strips or points when printing on a laser printer may appear for different reasons:

  • Inappropriate toner. Or it ends. Check the cartridge, replace the paint if necessary;
  • Cartridge leapland. When installing it happens. It is recommended to remove the part and reinstall it, according to the instructions;
  • Pollution or damage to the photo bank. Carefully inspect it. If necessary, clean or replace with a new drum;
  • Incorrect installation of a dosing blade. Remove the cartridge, and inspect the blade. If the problem is in installation, remove the part and reinstall. It is better to entrust this to a professional;
  • Damage to the magnetic shaft or hitting foreign objects on it. The element must be removed and cleaned;
  • Violation of the contact of the photo bank. In this case, it is also recommended to take the unit to the service.

Each problem can be examined in detail in the photo. To carry out the correct diagnosis of black or white dots. It is better for beginners not to understand their own. Otherwise you can harm the technique irrevocably.

What to do if the jet printer smears paper when printing?

The appearance of ink blitches on prints is a common problem that the owners of jet printing devices often face. First check the absorbent lining, which is placed inside the printer in the direction of the carriage. She can leave traces of ink. so that this does not happen, you just need to wipe it with a dry cloth. In addition, the rollers can be polluted, which should also be wiped with a dry cloth so that the latter absorbs the ink and you continue to print the documents in good quality.

Insert the sheet into the printer, after moistening its lower edge with a detergent;

Run the seal, while hold the upper edge with your hand until a system message appears about the absence of paper;

Repeat the procedure several times until the rollers are completely cleaned.

True, this is not a complete list of what it is worth checking when Pu begins to leave ink blots, or longitudinal or transverse stripes on paper.

Causes of a blur

If the jet printer smears paper, it can be caused by several reasons:

printer, prints, black, spots

The carrier is incorrectly selected. For example, you bought a photo paper of poor quality, as a result of which it is deformed and the print head smears it. Also, ink drops can appear on office paper, which is usually associated with erroneously selected printing settings for glossy or matte photo paper. The thickness of the sheet also matters. if it is more than necessary, then the paper simply cannot absorb ink that fall on it, therefore blotes occur.

Uneven sheets are used. Even a slight jamming of paper leads to the fact that during printing on its edges there are blots. This is because the paper gets dirty, clinging to the print head.

The continuous supply system of ink (SNPC) is higher than the print head. Excessive pressure leads to ink flow and this affects printed documents or pictures. Just put the system on the same level with the printer.

printer, prints, black, spots

The check valve of the cartridge failed, the purpose of which does not allow in in in ink. If you use disposable consumables, then you need to pull them out and carefully tap the cartridges on the napkin, but so that the ink does not spill, otherwise you will have to change the kit for a new. In addition, do not forget to wipe the device head and parking lot.

How do I clear black lines on printed documents | Brother HLL2360DW

printer, prints, black, spots

The tightness of the cartridge was disturbed, which can happen during the rearrangement or transportation of the printer. This means that the cartridge needs to be replaced, and the parking lot of the head and the rubber brush, which is designed to clean it, must be washed with a special liquid.

If you use high.quality carriers, you have no problems with consumables and SNPCh near the printer is installed correctly, and it still smears paper, then contact the service center where you will definitely help you solve this problem.