What does a laser printer cartridge consist of?

What does a laser printer cartridge consist of??

Laser printers have become very popular due to their ease of use and maintenance.

The technique of applying an image or text to paper using such a printer is not too complicated if you know how a laser printer cartridge works. You can buy a cartridge for a printer at an affordable price on the website cart-pro.ru.

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As a paint, a special powder is used. toner, which is poured into the toner compartment. Toner, like a photoreceptor, is a consumable in a laser printer. Also, the cartridge has a waste toner compartment.

Cartridge structure

Photoreceptor. It is also called a drum unit. This is a selenium-coated aluminum tube. It is the drum that transfers the image onto the paper using toner. The most common causes of drum wear are poor quality paper or poor toner.

Coroton or charge shaft. It charges the photoreceptor, making the image appear on the drum. Coroton lifespan depends on the condition of the drum unit. The more the drum is worn out, the less the coroton will last, even if it is brand new.

Magnetic shaft. Draws toner from the toner compartment and transfers it to the drum unit. This is due to the different charge rate. The quality of the toner depends on the life of the magnetic roller. Deformation of the shaft cover is very easy to detect. Then, blurry streaks appear on printed documents. This indicates that it urgently needs to be changed.

Squeegee or cleaning blade. It is made of soft material. The squeegee is used to clean the photoreceptor from toner residues. These residues are sent to the waste toner compartment. The main cause of squeegee wear is paper dust and foreign objects inside the printer.

Magnetic roller blades that apply toner to the roller and distribute it evenly over the surface. These blades are in direct contact with the toner, and therefore deteriorate due to the poor quality of this powder.

Magnetic shaft bearings. These small parts are essential for the shaft to turn correctly and smoothly. This will ensure quality printing as well as long cartridge life.

Recoil blade. This is to prevent toner from spilling out of the waste compartment. It is a thin film exiting the printer. It can be easily damaged by mechanical means.

Each part of the cartridge has its own role in printing. The magnetic roller transfers the toner to the photoreceptor, on which the necessary places have already been illuminated with the help of a charge.

A sheet of paper is rolled onto the photoreceptor, and it leaves traces of toner on the paper, releasing the paper from the printer already with the printed text or image.

Next, the drum is cleaned with a squeegee from unnecessary toner, which, as a result, falls into the second compartment of the cartridge. The charge shaft removes the remaining charge from the drum unit, and everything starts again.

In order for the printer to work well, all the elements of the cartridge must interact correctly with each other, and the toner and paper must be of high quality.

I. WASTE TONER COMPARTMENT

Parts of the waste toner compartment of the laser cartridge

(1) The imaging drum is the photosensitive heart of a laser cartridge, consisting of a hollow aluminum cylinder coated with a dielectric.

The drum unit can be located either in a cartridge (drum) or directly in a printer or copier (drum unit). In the first case, the imaging drum is serviced together with the cartridge, in the second case. independently from the rest of the printer or copier.

The functions of the drum unit are as follows. After sending the document for printing, the primary charge roller, pressing against the drum, transfers it a negative charge and the ability to repel toner microparticles.

A laser beam transfers an invisible document print onto the drum surface. Areas of the drum marked with the laser beam change to a positive charge and attract toner. Toner attracted to the drum creates a visible print of the document sent to print.

The imaging drum rolls across the sheet of paper and transfers the document print to its surface. After that, the paper medium enters the printer’s oven, in which it is warmed up. High temperature fuses toner into paper and fuses it onto paper.

The drum unit is the most expensive and at the same time the most capricious part of a laser printer. It is afraid of any mechanical damage, it can light up from direct sunlight and give out black prints, you must not touch it with your bare hands, since toner sticks to the sweat marks left on its glossy surface, which leads to printing defects.

Over time, the glossy layer on the drum unit will wear off, resulting in poor print quality. The first sign of the end of the life of the drum unit is black lines around the edges of the printed document. When such streaks appear, it is necessary to diagnose the drum, and then either clean its surface with a special solution or replace the drum with a new one.

(2) The primary charge roller is a part of the laser cartridge that, evenly pressing against the surface of the drum, transfers a uniform negative charge to it. After the paper medium passes through the drum, the primary charge shaft neutralizes the residual effects of the previous charge on the drum.

The primary charge shaft consists of a metal shaft on which a layer of conductive foam rubber or rubber is applied. This part of the laser cartridge is rather heavily contaminated with paper dust, so it must be cleaned regularly and thoroughly.

(3) The cleaning blade is a flat metal scraper with a polyurethane tip designed to clean the toner and paper microparticles adhered to the drum of a laser printer. In Russia, the cleaning blade is better known under the name “squeegee” (from it. Rakel. scraper). In color laser printing, a squeegee removes color toner adhering to transfer belts.

It should be noted that not all laser printers are equipped with a squeegee. In some models of Xerox and Samsung laser printers, excess toner adhering to the drum is removed from its surface by the primary charge roller, and from there it is shaken off with a special brush into the waste toner box.

(4) The drum seal blade closes the gap between the drum unit and the waste toner box. The sealing blade keeps the waste toner out of the hopper to keep it from spilling back onto the paper.

Components of the toner cartridge

Drum cover. protects the drum from sunlight, which contributes to the destruction of the photosensitive layer, as well as from possible mechanical damage and debris and dust when transporting the cartridge outside the printer.

The upper block of the cartridge housing (waste toner box) consists of:
drum unit, primary charge roller, cleaning blade.

Pressure Spring. Presses the drum unit against the magnetic shaft. In the absence of this spring on the cartridge, the print on one side of the paper will be almost invisible.

Photodrum (photodrum) is a hollow aluminum cylinder covered with an organic photoconductive material that preserves the image of the future image. Resource: 3-4 refills, after which the photo layer is erased and begins to produce low-quality prints.

The primary charge roller (PCR shaft) is a rubber or foam coated metal shaft that provides a negative charge to the photo roll. Sometimes mistakenly referred to as a corotron (see article for details on differences between PCR and corotron toner cartridges).
Resource: up to 6 gas stations. Basically, this element can last a long time, but if this part is damaged, the print quality may deteriorate. The shaft can get very dirty from paper dust particles and needs to be cleaned regularly.

Cleaning blade (“squeegee”). a metal plate with a polyurethane tip. Cleans the drum unit from unused toner that has not transferred to paper (more about the squeegee).
Resource: It is recommended to change the squeegee together with the drum unit. Temperature causes the polyurethane squeegee tip to harden and wears more of the drum surface over time.

The magnetic roller (“developer”) consists of: a sheath or film of the magnetic roller and a core (15). Charges toner and then applies it to the drum unit from the toner hopper.
Resource: 3-5 fillings. Damage to this part will result in a significant reduction in print quality.

Magnetic Shaft Bushings. Bearings. Allows the magnetic shaft to rotate freely.

12,13,14. gears of the magnetic shaft and drive.

The toner dosage blade (“doctor”) is a metal plate with a flexible tip. Distributes toner on the magnetic roller evenly and thinly. Resource: 5-8 refills (silicone tip wears out, becomes soft and thin with use).

Bushing stops. center the magnetic shaft.

The lower block of the cartridge body (hopper for new toner) is a container inside which there is toner for future transfer to paper. Also a toner activator (wire frame toner stirrer) is built into the hopper. Includes: magnetic roller, toner metering blade and squeegee.

Magnetic Roller Cleaning Film. Keeps toner in hopper. Resource: 5. 9 refills (damaged worn film may cause new toner to spill out of the hopper).

Drum Cleaning Film. Keeps waste toner in the waste bin. Resource: 5. 9 refills (damaged worn film can cause spills of waste toner from the hopper).

Laser cartridge device

The body of a typical laser cartridge consists of two main units, which are fastened on the sides: the upper one is the waste toner box and the lower one is the main toner container. Below, using the example of a common HP cartridge, a description of the main components, which are better known as spare parts for laser cartridges (spare parts and accessories). Ignored simple bolts, nuts, springs, identifying chip.

Laser cartridge device

The body of a typical laser cartridge consists of two main units, which are fastened on the sides: the upper one is the waste toner box and the lower one is the main toner container. Below, using the example of a common HP cartridge, a description of the main components, which are better known as spare parts for laser cartridges (spare parts and accessories). Ignored simple bolts, nuts, springs, identifying chip.

Components of the toner cartridge

Drum cover. protects the drum from sunlight, which contributes to the destruction of the photosensitive layer, as well as from possible mechanical damage and debris and dust when transporting the cartridge outside the printer.

The upper block of the cartridge housing (waste toner box) consists of:
drum unit, primary charge roller, cleaning blade.

Pressure Spring. Presses the drum unit against the magnetic shaft. In the absence of this spring on the cartridge, the print on one side of the paper will be almost invisible.

Photodrum (photodrum) is a hollow aluminum cylinder covered with an organic photoconductive material that preserves the image of the future image. Resource: 3-4 refills, after which the photo layer is erased and begins to produce low-quality prints.

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The primary charge roller (PCR shaft) is a rubber or foam coated metal shaft that provides a negative charge to the photo roll. Sometimes mistakenly referred to as a corotron (see article for details on differences between PCR and corotron toner cartridges).
Resource: up to 6 gas stations. Basically, this element can last a long time, but if this part is damaged, the print quality may deteriorate. The shaft can get very dirty from paper dust particles and needs to be cleaned regularly.

Cleaning blade (“squeegee”). a metal plate with a polyurethane tip. Cleans the drum unit from unused toner that has not transferred to paper (more about the squeegee).
Resource: It is recommended to change the squeegee together with the drum unit. Temperature causes the polyurethane squeegee tip to harden and wears more of the drum surface over time.

The magnetic roller (“developer”) consists of: a sheath or film of the magnetic roller and a core (15). Charges toner and then applies it to the drum unit from the toner hopper.
Resource: 3-5 fillings. Damage to this part will result in a significant reduction in print quality.

Magnetic Shaft Bushings. Bearings. Allows the magnetic shaft to rotate freely.

12,13,14. gears of the magnetic shaft and drive.

The toner dosage blade (“doctor”) is a metal plate with a flexible tip. Distributes toner on the magnetic roller evenly and thinly. Resource: 5-8 refills (silicone tip wears out, becomes soft and thin with use).

Bushing stops. center the magnetic shaft.

The lower block of the cartridge body (hopper for new toner) is a container inside which there is toner for future transfer to paper. Also a toner activator (wire frame toner stirrer) is built into the hopper. Includes: magnetic roller, toner metering blade and squeegee.

Magnetic Roller Cleaning Film. Keeps toner in hopper. Resource: 5. 9 refills (damaged worn film may cause new toner to spill out of the hopper).

Drum Cleaning Film. Keeps waste toner in the waste bin. Resource: 5. 9 refills (damaged worn film can cause spills of waste toner from the hopper).

The laser cartridge consists of a waste toner compartment and a toner compartment. The waste toner compartment contains the drum unit, primary charge roller, cleaning blade, and drum sealing blade. Toner compartment includes magnetic roller, toner metering blade, magnetic roller sealing blade, toner hopper and sealing pin.

Since there are no uniform federal standards in Russia that would fix the names of consumables for printers and copiers, these names are not unambiguous and have many synonyms.

Names of working compartments and parts of the mechanism of the toner cartridge

Part name Common synonyms
I. Waste Toner Box
Drum Organic Photo Conductor, OPC, Drum, Drum unit, Photoreceptor, drum, photoreceptor drum, photosensitive drum
Primary charge shaft Primary Charge Roller, PCR, Charge Roller, Charge Roller, Primary Charge Roller
Cleaning blade Wiper Blade, Cleaning Blade, Squeegee, Wiper, Cleaning Blade
Drum sealing blade Recovery Blade, OPC Sealing Blade, OPC Sealing Blade
II. Toner compartment
Magnetic shaft Magnetic developer Roller, Mag Roller, Developer Roller, developer roller, transfer roller, developer roller
Toner dispensing blade Doctor Blade, Metering Blade
Magnetic Shaft Sealing Blade Mag Roller Sealing Blade Mylark
Toner hopper Toner Reservoir, toner hopper
Sealing check Seal, filling

Principle of laser printing

After sending the image to print, all mechanisms of the laser printer and cartridge are activated. The drum (shaft) starts to rotate and simultaneously covers it with a negative charge. The imaging drum is guided by a laser beam that is only activated where the toner will be applied. A prototype of the image on the drum is created, which will later be on paper. The drum with the toner image already applied to it rotates in contact with the paper. The other side of the paper is in contact with the shaft, which transfers a positive charge, as a result of which, particles of toner with a negative charge are attracted to the paper (“plus” is attracted to “minus”). The paper is then pulled between two heated rollers, securing the image by baking the dye powder. The final step is to clean the drum from unused toner residues (performed by a squeegee).

Principle of laser printing

After sending the image to print, all mechanisms of the laser printer and cartridge are activated. The drum (shaft) starts to rotate and simultaneously covers it with a negative charge. The imaging drum is guided by a laser beam that is only activated where the toner will be applied. A prototype of the image on the drum is created, which will later be on paper. The drum with the toner image already applied to it rotates in contact with the paper. The other side of the paper is in contact with the shaft, which transfers a positive charge, as a result of which, particles of toner with a negative charge are attracted to the paper (“plus” is attracted to “minus”). The paper is then pulled between two heated rollers, securing the image by baking the dye powder. The final step is to clean the drum from unused toner residues (performed by a squeegee).

What does the printer consist of?

A laser printer is one of the most commonly used designs in a modern office. However, not many thought about what it consists of, as well as how the printing process takes place and by what means. We will talk about this further.

What the cartridge consists of

The cartridge is a replaceable ink container and is used in any printer as a printing medium. Such a device in the laser form of a printer is a device that consists of toner with a compartment. As a rule, it contains 4-5 compartments with coloring elements. It contains a photoconductor drum with a primary charged shaft, a cleaning blade and a seal-like drum blade. The compartment contains a magnetic-type shaft with a toning dosing blade, a magnetic-roller sealing blade, a toner hopper and a sealing type of check.

What’s inside a laser printer

A laser printer is one of the devices that allows you to quickly print text or graphics on plain paper. It consists of a printing mechanism and consumables.

  • drum unit. a tool needed to transfer an image to paper;
  • laser unit. a device responsible for printing;
  • corotron. charge roller, which sends a signal to the laser unit and allows you to print an image;
  • portable tape. a device responsible for intermediate image acquisition;
  • development unit. a device that is needed to transfer toner onto the image in the drum.

Important! The drum unit consists of a photo drum, a doctor blade and a working hopper device. As a consumable, the printer uses toner with media and developer. They are a kind of colored dye powders for holding the image on the paper and transferring the ink to the drum of the technique.

How color and black and white printing is carried out

The process of black and white printing in a laser printer is a delicate and complex physicochemical process. In short, it involves 5 steps:

  • recharging the photo drum. receiving an equivalent electric charge and distributing it to the drum, which transfers the paint to the canvas;
  • laser scan or exposure. the process of passing the photogallery under the laser;
  • overlaying a toner in contact with the illuminated photo roll to combine a negative charge with a positive one;
  • transferring toner to paper using an appropriate roller (the negative charge of the toner collides with the positive one on the paper and contacts, coming into contact with its particles and being held on it according to the law of electrostatics);
  • fusing the toner using heat with pressure. the paper moves to the fusing unit (fuser) and the image is fixed on it.

A color image is obtained according to the following principle:

First, the rendering engine takes the document and digitally processes it a couple of times, creating a raster frame on it, decomposed by the colors of the toners, and then the laser distributes the charges along the rotating drum, informing about the scan and transmitting signals to the toners. Its charged particles are attracted to the drum, and it, in turn, is attracted to the paper. Thus, coloring pigments, resins and polymers are attached to the paper.

In general, the device of a laser printer is simple: it consists of printing mechanisms and consumables, which include, among other things, a cartridge. That includes toner with a compartment. Together, the cartridge and printer print in color or black and white on plain office paper.

Brother

Refilling the Brother laser printer cartridge is carried out if you have original or compatible toner, two types of screwdrivers (straight, cross).

First, remove the side cover of the cartridge by unscrewing a couple of screws and prying the latch. Next, get rid of the bushing (on the magnetic shaft) and gears (the latter does not need to be removed). Then we remove the washer and the bases of the gears (before that, you need to pry off two locks).

Where the refill port is located on the Brother print cartridge, remove the screw, pry off the grommet and remove it. The next step is to remove the loose magnetic roller. After that, you need to remove the dispensing blade, which must then be cleaned with a dry cloth. Only then can you really release the worn out toner. Get rid of its residues with a vacuum cleaner. Do not forget to clean other parts as well, such as the magnetic shaft, its contacts and bushings.

The amount of powder poured into the cartridge is also important. For 1000 sheets, you need only 45 g (in one jar 60 g). Refueling in such proportions will not void your Brother printer warranty repair. After placing the toner in the cartridge, all that remains is to reassemble it. The last step is to reset the counter.

What the cartridge consists of

The cartridge is the main consumable, without which the printer cannot function. In fact, you can use it only once, but often the period of operation is delayed, before that you need to refill the toner and replace the elements that have spent their.

The laser printer cartridge consists of a housing, a doctor blade, a primary charge roller, a blade (metering or cleaning), an imaging drum, and a magnetic roller. The order of refilling the cartridge at home should follow the instructions supplied with the printer. Devices made by different manufacturers (Canon, Brother, Samsung, Xerox, HP) differ in the process of refilling the cartridge.

Instructions for refilling laser printer cartridges

The printer cartridge is an ink attachment. Its state of aggregation depends on the type of peripheral equipment. For example, a laser device will require powder paint. The number of cartridges affects the technical capabilities of the printer.

The paint application process depends on the influence of the magnetic field. With its help, the toner is attracted to the roller, which, spinning up, distributes the powder particles over the print object. There are several types of cartridges. Refilled can be used no more than 3 times, otherwise the printer will fail due to wear of parts.

The original ones often come with a laser device. The cost of branded cartridges is significantly higher than that of their counterparts. In turn, compatible models are characterized by poorer quality. Remanufactured cartridges are designed to be reused. The recovery process (replacement of worn parts) has several stages, the first of which is diagnostics of the cartridge condition.

Canon

Refilling Canon laser printer cartridges is an effective way to reduce your printing costs. It is able to extend the life of the toner, and thus save money on the purchase of a new cartridge.

To refill a Canon printer you will need a cartridge, Phillips screwdriver and toner. It is necessary to understand that powder for laser devices can harm people with respiratory diseases. You should not risk your health, in this case it is safer to contact the service center.

First you need to prepare your work surface. It could be a table covered with a newspaper. The cartridge is placed on it.

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Next, you need to follow the instructions:

  • Take a consumable.
  • Unscrew one bolt from each end and remove the cover without sudden movements (do not forget about the spring).
  • Divide the consumable in two.
  • Take the one that contains the drum and temporarily separate the photoreceptor from it. The latter must be placed in a dark place.
  • Remove the toner after removing the rubber shaft and metal cover. To do this, you need to unscrew two bolts.
  • Waste powder is removed with a special vacuum cleaner, in extreme cases, use a small bag.
  • After cleaning the toner, replace the metal plate. Be sure to secure it with bolts.
  • The photoreceptor and shaft must also be reinstalled.
  • Now we have to work with the second part of the consumable. First, remove the bolt responsible for fixing the side cover.
  • After removing it, pull out the magnetic shaft.
  • Prepare the toner by shaking it. The powder should look like a liquid.
  • When refilling the cartridge, distribute the powder evenly.
  • at the end of the procedure, return the source to its original form.

Strictly following instructions will ensure efficient operation of your Canon printer.

Samsung

Refilling Samsung laser printer cartridges at home requires tools. In particular, you need to prepare a pre-purchased toner that matches your Samsung device, latex gloves, a special vacuum cleaner, microfiber and hot plastic. The microchip will become an important part, but it can be replaced by a counter program.

Before starting work, you should read the instructions. It is similar to those presented above. The difficulty of self-refueling is that Samsung laser printer models have their own design features. Ignoring this fact will lead to equipment malfunctions that cannot always be repaired. For example, Samsung 3405, ML-2165 and some other models lack standard mounts. Instead, in these modifications of Samsung, the cartridge is held on the buttons.

There are several recommendations, the application of which will allow you to refuel the most efficiently and without consequences.

  • Use a thin screwdriver to refill the cartridge, as this is less likely to damage your Samsung Laser Printer. All movements must be verified, as an accidental oversight can lead to damage to the color printing machine.
  • To clean the parts, you need to use a special alcohol solution, if there is no such solution, “Mister Muscle” is suitable for washing Windows.
  • It is necessary to fix the bolts well, otherwise poorly strengthened parts will be a significant reason for poor-quality color printing.
  • For greater reliability of fastening the side covers, glue (liquid consistency) will come in handy. The duration of operation of a Samsung laser printer directly depends on the connection of parts.

You can watch a master class on refilling a cartridge on the video.

How to refill laser printer cartridges from other manufacturers

Refilling of cartridges of color laser printers Xerox and HP. It should be noted that devices under the Xerox brand are multifunctional. They combine copier, printer and scanner. The consumption of working materials in this case is quite impressive. Therefore, you cannot do without saving on color cartridges.

Not everyone can turn to the service center for help. For users who have equipment from HP, an instruction has been developed on how to refuel the device with their own hands. No special tools are required to refill the cartridge for the HP Color Printer. The quality of the consumables is paramount. The sequence of actions can be seen in the photos below.

Anchoring

The next stage of printing on a laser printer is fixing. This stage is necessary for the image to remain on the paper. When exposed to high temperatures, the toner begins to melt, which allows it to firmly adhere to the surface. When the sheet passes between two rollers, heating occurs.

Reference. Depending on the model, the oven can heat the powder up to 200-350 ° C.

  • Thermal film is used in inexpensive laser printers. It is highly susceptible to mechanical stress.
  • Teflon construction heats the surface with a lamp. Reliable and durable design.

Temperature control is carried out using a sensor. If the values ​​are exceeded, the device automatically turns off. To prevent the sheet from sticking to the drum, there is a separating mechanism at the exit. Subject to the basic rules of operation, these elements rarely fail.

How does a laser printer work

The principle of operation of a laser printer is to create a preliminary image on a drum and then transfer it to paper. A high-quality print is obtained by dotting dots on the drum using a laser and a system of mirrors. The principle of operation of a laser printer is based on the physical process of xerography.

To understand how the device prints, it is necessary to study in detail the stages and principle of operation of a laser printer:

  • Image processing and drum charging with charged particles.
  • Next, there is a preliminary creation of the image.
  • The next step involves developing with toner.

Color print

Color laser printing is widely used to print quality images. Taking into account the fact that the printer creates a subtractive color model, it is possible to obtain any shade. It does this by absorbing and reflecting different light waves. With the introduction of black, the output is saturated colors. A laser printer consists of a large number of modules and blocks that allow you to mix colors and transfer an image to a sheet. Models differ in technical characteristics and principle of operation.

Development

The image is developed using toner and a magnetic roller. The mechanism is a metal tube with a magnetic core. By rotating, the toner is attracted to the shaft. The metering blade ensures that the paint is evenly distributed over the entire surface. The layer is formed by passing the toner through the gap between the blade and the drum.

Caution: The mechanism must be properly installed to avoid defects in the printed document. Excess toner results in dots and streaks.

The magnetic roller works cyclically. In the process, new particles are attracted, creating an image. Excess powder is discharged into a special container.

Laser printer device

A laser printer is based on the photoelectric principle of xerography. The design includes complex mechanisms and assemblies that can be divided into three main blocks.

  • It is based on the printing mechanism.
  • A controller with a raster processor is responsible for scanning.
  • Data exchange is carried out using an interface unit.
  • photoconductor with static charge, which changes depending on the lighting;
  • laser and mirror system provides lighting of certain areas on the drum;
  • an intermediate block necessary for transferring the image to the final medium;
  • a toner storage and supply unit based on a cartridge;
  • mechanisms for feeding paper from the tray to the print head;
  • heating elements for developing the image on the sheet.

Drum charge

In order to form a preview image, an electrical charge must be created on the surface of the drum. There may be positive and negative particles, depending on the printer model and design.

  • The coronator is a tungsten filament containing gold or platinum interspersed. Under the influence of voltage, an electric field is created, which is transferred to the drum. This method degrades the quality of the printed material over time.
  • The charge roller is a roller with a layer of rubber or foam rubber applied to it. When interacting with the drum, electricity is transmitted. This method generates an undervoltage that extends the life of complex mechanisms.

Transfer

The image is also transferred to the paper by means of a charge. Moving mechanisms feed the sheet from the tray to the drum unit, next to which there is a shaft for transferring the image. Toner particles are transferred in a circuit to the paper carrier due to static electricity. Excess paint goes back to the hopper. With the help of special elements, dust and small particles are removed from the surface of the sheet. Charge recovery after a whole cycle occurs with the help of a corotron. Then the process is repeated until the entire image is transferred to the paper.

How the cartridge works

The cartridge consists of toner and drum. The chemical composition of toner is a crushed polymer material. Powders, depending on the manufacturer, differ in consistency and physical properties. Toner differs from ink in image quality, but care must be taken when handling.

Important. For high-quality printing on a laser printer, it is necessary to change consumables on time. It is not recommended to refill cartridges with low-quality toner.

The drum is a cylinder with a photoconductive surface. Magnetic roller charges toner and a cleaning blade cleans up unused toner.

Differences between a cartridge and a toner tube

Since the type of printing is different, then, accordingly, office equipment and consumables for it also have an unequal assembly. In other words, the design of the cartridge is directly dependent on the printing technology. However, not only the filling differs among themselves in such printed accessories, but also the appearance and even their overall dimensions. The only thing that unites them with each other is the complexity of assembling the product as a whole. As for the toner cartridge, this product consists of two hoppers. One of which contains toner, and the second waste.

Components of cartridges for printers

Most people are sure that the cartridges used in printing technology are ordinary plastic boxes in which the dye is stored. In reality, this is far from the case. Indeed, in addition to the fact that consumables contain paint, they also perform many different functions that have become possible thanks to the unique design of the printed accessory and additional elements installed on it.

What the matrix cartridge consists of

The matrix peripheral cartridge is usually not complex, but very intricate design, which includes the following parts:

  • the case is the basis and serves as a protection against dust ingress;
  • dye ribbon. a fabric product impregnated with a special dye;
  • the pulling mechanism is designed to move the tape inside the cartridge;
  • the tensioning handle is necessary to tighten the sagging tape;
  • the sponge is designed to permanently apply ink to the tape and thereby extend its life cycle.

It should be noted that the ribbon in dot matrix printers can be both monochrome and multicolor.

What does an inkjet cartridge consist of?

In general terms, an inkjet cartridge is a capacitive storage container.

coloring matter. However, this is not a simple reservoir, but a whole mechanism for creating high-quality prints, which consists of the following:

  • covers are an important component with holes for refilling toner;
  • there is only one ink tank for black and white printing, for color. from three to seven;
  • absorbent sponges are used to absorb and hold ink;
  • print head applies toner to paper (may not be available on some models);
  • contact plates are required to connect the consumable to office equipment;
  • the chip system is designed to store various information (for example, how much is left in the ink cartridge).

Ejection of paint is carried out using a special heating element or piezoelectric plate.

What does a laser cartridge consist of?

A laser cartridge consists of many small parts and several separate mechanisms. However, it can be conditionally divided into three parts: toner, body and image transfer unit. It is worth noting that laser cartridges are constantly exposed to mechanical stress and therefore some parts wear out after some time:

  • an imaging drum is a complex device that is an aluminum cylinder with photosensitive elements;
  • the primary charge roller is used to recharge the drum unit;
  • a magnetic roller charges toner with negative particles and applies it to the drum unit;
  • a squeegee cleans the drum from ink residues;
  • the dispensing blade is designed to adjust the amount of toner applied to the magnetic roller;
  • seals close the gaps at the joints.

Remember that most parts of the laser cartridge are replaceable and refurbished.

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What is toner cartridge imaging drum

The drum unit is the main part of a laser cartridge used to apply toner to a paper sheet. It is often made of aluminum, in the form of a metal tube, with several layers of various chemical compounds applied on it, called a “photosensitive element”. It speeds up the printing of the required material, but at the same time, the quality may slightly deteriorate over time. Thus, the laser cartridge needs to be disassembled more often and cleaned from accumulated waste and dirt.

Laser Printer Cartridge Arrangement

To begin with, it should be noted that a laser printer has become a permanent attribute of many offices since the early 90s of the last century. At the same time, he found wide application even in domestic conditions. Office equipment of this type is necessary in places where it is required to print hundreds of pages of various documentation. But behind the external simplicity of this type of MFP, there is a set of all kinds of nodes that use dozens of patented technologies. The key components of devices of this type include laser cartridges, which use not ink to print text and graphics, as is the case with inkjet counterparts, but a dye in the form of a powder. toner.

Before talking about the principle of operation of a laser cartridge, you need to briefly consider what components it consists of. So, the device of a laser printer cartridge is based on a number of important elements, namely: a photo roll, a primary charge shaft that provides a charge of a photo roll with a minus sign, a squeegee (a blade designed to clean the photo roll). As for the toner compartment, which is also part of the laser cartridge, it consists of a magnetic-type shaft and an associated metering blade, the so-called. “Doctors”, seals, as well as containers for coloring powder.

In this case, it should be added that a core is located inside a magnetic shaft made of metal. It is to this element that the coloring powder is attracted, which, before entering the photovale, acquires a charge with a minus sign under the influence of a certain voltage. But the seal is necessary in order to avoid spillage of the coloring matter when transporting the cartridge. It is usually used to seal new or remanufactured consumables. Before using the laser cartridge, it must be removed.

How laser printer cartridge works?

As soon as a print command is sent to the turned on printer, all its constituent parts begin to be set in motion. Thus, the pre-press preparation of the cartridge takes place, after which the following actions are performed. The principle of the laser cartridge is described in more detail below.

First of all, the charging shaft is adopted to uniformly cover the entire surface of the photo shaft, which is in rotation with a charge with a minus sign.

At the second stage, the so-called. overexposure. the surface of the photo roll charged with a minus sign begins to be exposed to overexposure from the side of the laser. This beam, in turn, is activated only in those zones that are intended for further application of the coloring powder, i.e. toner. The surface of the photogallery, which has a high photosensitivity, under the influence of the beam begins to gradually lose its charge with a minus sign. The laser beam, in turn, carries out the application of a kind of a prototype of a text or drawing on it.

Further, the toner is applied in a laser type cartridge. The prototype of the text or picture obtained in the previous step begins to transform into a visible image. it is this image that will be transferred to paper in the future. The powder begins to gradually be attracted to the surface of the shaft under the influence of the magnet. From the latter, as mentioned above, its core is made. The coloring powder on the surface of the shaft, during the rotation of the latter, begins to pass through a narrow gap. It is formed by a blade called “Doctor” and a shaft.

Further, the powder on the shaft is electrified, as a result of which they acquire a charge with a minus sign. In the future, toner microparticles with a minus charge begin to fly to those areas of the photo roll that were previously illuminated. “Doctor Blade” (“Doctor”) at the same time contributes to the uniform distribution of the layer of powder on the magnetic roller, which, in fact, to some extent depends on the quality of the printed image.

This is followed by the stage of transferring the colorant to the surface of the carrier. The drum of the laser cartridge with the applied toner image, while continuing to rotate, begins to gradually come into contact with the surface of the paper. On the other hand, the sheet of paper is in contact with the surface of the transfer roller, which carries a plus sign. As a result of such an action, those microparticles of the coloring powder, which have a charge with a minus sign, begin to be attracted to the sheet. This is how you get text or graphics, “sprinkled” with toner on paper.

After the transfer of the image has been carried out, it must be fixed without fail. To do this, a sheet with “filled” text or graphics is sent to the node responsible for securing the result. It consists, as a rule, of two shafts in contact with each other, the lower one of which serves to press the paper carrier against the upper one. The latter, in turn, is heated to such a temperature index that helps to melt the toner particles and bake them to the surface of the paper.

At the next stage, the mechanism of the laser cartridge cleans the drum, because a certain amount of dye powder remains on the photo roll as a result of printing and is not transferred to the surface of the paper. A special blade, or in other words a doctor blade, is responsible for the cleaning function of this part. All powder that remains on the drum is sent to a container intended for waste ink. In this case, the blade located between this hopper and the drum becomes an obstacle in the path of the toner in order to avoid spillage of its microparticles on the paper.

At the last stage of the cartridge, the image is erased, i.e. the image previously applied by the laser beam is removed from the surface of the photo roll. For this purpose, the charging roller evenly covers the surface of the photogallery using a charge with a minus sign, restoring it in all those areas where it was lowered by the laser beam.

In general, as you have seen, the principle of operation of the cartridge included in the laser printer is not as simple as it seems at first glance. This consumable is a rather complex mechanism, which consists of debugged working parts.

Mining bunker

A part such as the waste toner hopper is the part of the cartridge for storing waste powder. The latter gets there after wiping it off from the drum. Each refueling requires mandatory cleaning of this container.

Infecting video

The charge shaft is a product consisting of a metal core enclosed in a rubber sheath. The main task of this part is to charge the drum with negatively charged particles. In addition, the primary charge roller in Samsung cartridges also serves to clean the photoconductors from all kinds of debris.

Squeegee

Such a cartridge part as a squeegee is a metal frame, the edge of which is equipped with a special cleaning element that has good elasticity. The main purpose of this part is to remove the toner that remains after transferring the image to a sheet of paper.

It should be noted that the squeegee has approximately the same lifespan as the drum unit. Consequently, the squeegee is changed, as a rule, simultaneously with the fotoval. This part has a felt toner seal, thanks to which the toner does not spill out of the waste bin.

Samsung cartridges deserve special attention. The fact is that, as a rule, there is no squeegee in them. instead, the so-called. primary charge roller, which is cleaned with a special brush.

Photo roll, squeegee, dosage blade, magnetic roller and other parts of the laser cartridge

One of the most important parts and at the same time the main consumable in a laser printer is its cartridge. Structurally, a laser printer cartridge is not as simple a device as it seems at first.

It usually consists of the following parts: photo roll, squeegee, magnetic roller, metering blade and charge roller. In addition, not all cartridges are alike, the fact is that in consumables Brother Samsung and Xerox, unlike HP and Canon, non-magnetic toner is used, and instead of a magnetic roller, they are equipped with a rubber dosing roller. It should also be added that in the consumables of these three companies there is no mining bin and the dosage blade in them is made of metal.

Photoreceptor

First, you need to answer the following question: What is a drum unit? A part of this kind for cartridges is an ultra-sensitive “heart”, which is a hollow cylinder, for the manufacture of which aluminum is used. The top of this product is covered with a dielectric layer.

The photoreceptor can be located both in the printer itself and in its cartridge. On some machines, for example, on Brother equipment, the cartridge consists of two parts. toner and dram. One part contains the drum unit and the other contains toner. They change independently of each other. as they wear out.

The function of the drums is as follows: after sending a sheet of paper for printing, the primary charge shaft, pressed against the photo roll, transfers to it a charge with a minus sign and, at the same time, the ability to repel toner particles (powder in a cartridge). All those areas that have been marked with a laser beam change their charge to positive, as a result of which they attract toner to themselves. Thus, the photo roll forms a visible print of the image sent to print.

At the finish, paper with toner adhered to its surface passes through the oven with high temperature readings, which makes it possible for the toner to securely fix on the sheet. In general, a photogallery is the most capricious, but at the same time an expensive part of a laser printer of any model. As a rule, it should not be touched, as this can lead to a sharp deterioration in the quality of subsequent printing.

Fotoval shutter

This part of the cartridge is for protective purposes so that the drum unit inside the cartridge is not damaged during shipping. It protects it from dust and other negative factors. When the cartridge is installed in the printer, the shutter opens and allows the laser of the device to charge the photoreceptor unimpeded. Therefore, in order to gain access to the photogallery when you have removed the cartridge from the device, first of all, you must open this protective shutter.

Magnetic shaft

This element of the cartridge is designed to evenly transfer toner microparticles to the surface of the photo roll. The magnetic shaft is made, as a rule, in the form of a hollow tube containing a magnetic core. At the same time, in consumables of the Samsung company, the magnetic shaft is called “Developer-roller” and consists of a composition that resembles high-quality rubber in its properties. There is also a so-called. magnetic shaft bushings, which are plastic bushings that define the gap between the magnetic shaft and the photoreceptor.

NNCXV.INFO 2021