Laser printer printing defects

The printer is a very popular electrical product. It is used both in office companies and at home. This device can greatly facilitate the process of work or study, because the printer eliminates the need to write texts or draw pictures by hand.

In order to obtain high-quality images or text, it is necessary to maintain the functionality of the printing device.

However, even with proper care, various defects sometimes appear during printing. There may be several reasons for their appearance.

Printing defects caused by insufficient toner

A printer cartridge cannot last forever. From time to time they require refueling or replacement. However, not every owner of a printing device is able to determine when the toner runs out and the cartridge needs to be refilled.

Modern devices have a special chip that responds to changes in the amount of toner and notifies that refilling is required. But he does this much in advance, so it is advisable to focus on other defects that arise when there is a lack of dye. These include:

• Uneven and weak distribution of the coloring matter on a sheet of paper. The resulting image may have light spots and the image itself may be blurry;
• Formation of stains on sheets. When the pigment runs out, it can clump together. They cause various stains to form on the pages;
• Printer warnings. Modern models of the device have a liquid crystal display, which displays information about the amount of toner. If the pigment runs out, the display will flash and display an appropriate error message. However, some devices may block the printer;

If stains form on sheets of paper, it is strictly forbidden to remove and shake the printing device cartridge!

Defects arising due to wear of spare parts

To obtain an image or test, not only the cartridge is used. The printing device also has: an image drum, a magnetic shaft, a dosing blade and a squeegee. If one of them fails in laser printers, it will immediately affect the printing result.

Defects may be as follows:

• If the photo roller is damaged, stripes and dots appear on the page. The distance between them is equal to the pitch of the photocylinder. If a rounded stripe appears on the shaft, then a solid line will appear on the page. A very thin straight line indicates that scratches have appeared on the shaft;
• The appearance of light areas is caused by wear and tear of the photo roller or by light shining on it;
• If printing produces a blank sheet, then no power is supplied to the cylinder;
• The gray background of the paper sheet indicates wear on the blade;
• If the squeegee does not work correctly, a gray stripe with very blurred edges will appear on the paper;
• The appearance of an extraneous background or very dark spots on a sheet of paper indicates that the magnetic shaft is worn out or has received mechanical damage;
• Black and white transverse stripes indicate curvature of the magnetic shaft;

Defects caused by foreign objects entering the photodrum

Even with the most careful use of the printer, various foreign bodies sometimes get into it. Most often it is paper clips or accumulated dust.

The entry of a foreign body leads to the appearance of so-called artifacts. As a rule, they are light and have a certain periodicity of arrangement. If the distance between them is 8 cm, then something foreign has entered the drum. If the distance is approximately 3 cm, a foreign body has hit the magnetic shaft or the primary charge shaft.

If paper clips get into the printing device, it can cause serious damage and defects during printing!

Since the entry of a foreign object into the printer often leads to the replacement of the photoconductor or magnetic roller, it is very important to ensure that foreign bodies do not enter the device.

Defects due to torn thermal film

All printing devices use thermal film. Over time, it can begin to wear out and, in rare cases, become damaged. When damaged, the following defects occur:

• Various dots or dirt appear on sheets of paper;
• When feeding paper, they may begin to jam;
• Text or images are fuzzy or blurry;
• During the printing process, a crunching sound is heard;

If the thermal film is damaged, it must be urgently replaced. If this is not done, the photodrum may fail!

Even the most expensive and high-quality printer can fail. Despite the fact that the most common cause of incorrect operation is the cartridge, it is very important to know about other possible causes of failure.This will allow you to eliminate them in time and avoid serious repairs or purchasing a new product.