Cartridge selection, use and analysis of its working principle

The most critical part of a good laser printer is a toner cartridge, also known as a photoconductor drum. It not only determines the quality of the print, but also determines how much money the user spends in the process. In a laser printer, more than 70% of the imaging components are concentrated in the cartridge, and the print quality is actually determined to a large extent by the cartridge. The cartridge model refers to the type of cartridge that the printer can use. Under normal circumstances, the cartridge model recommended by the manufacturer will be used. The different models cannot be used unless they are refilled.

The basic structure of the drum is generally composed of a basic substrate made of aluminum and a photosensitive material coated on the substrate. According to the different photosensitive materials, it can be basically divided into three types: OPC drum (organic photoconductive material), toner cartridge (Se selenium) and ceramic drum (a-si ceramic). From the life point of view, the life of the OPC drum is short, generally only about 3,000 pages, of course, the price is the cheapest. Se drum life is about 9,000 pages, a-si drum life can reach 90,000 pages, the price is naturally followed by analogical climb. In terms of composition, the general OPC cartridge has only three layers. The first layer is an aluminum tube, the second layer is an insulating layer, and the third layer is a photosensitive layer. The surface of the toner cartridge (Se selenium) and ceramic drum (a-si ceramic) is synthesized from four to five layers of material. In particular, the ceramic drum has a fourth protective layer and a fifth protective layer. The fourth and fifth layers are used to protect the photosensitive layer so as to protect the long life of the cartridge.

Cartridge selection

Toner cartridges are available in integral or split style. Integral cartridges are primarily designed to contain toner cartridges and photoreceptor drums on the same device. When toner is used up or the photoconductor drum is damaged, the entire cartridge must be discarded. The type of toner cartridge used is mainly HP (HP) and Canon (Canon) models. This unique design increases the user's printing cost, and is harmful to the environment, but it brings to the manufacturer. Huge profit. Separation type toner cartridges and photoreceptor drums are placed on different devices, and the photoconductive drums generally have a long life, and generally can reach a life of 20,000 sheets. Simply replace the spent toner, so the user's printing costs are greatly reduced. The main use of such toner cartridges is Panasonic, Epson, and others.

For users of laser printers, there are three options when replacing a toner cartridge: an original cartridge, a universal cartridge (or a compatible cartridge), and a refilled cartridge. Print quality is definitely the first factor that customers need to consider. It goes without saying that the original cartridge is obviously the best choice. Since the original cartridge carefully considered the integration with other parts of the printer during the design process, the manufacturing process is meticulous, so it can create an ideal printing effect and is much better than other compatible products. The refilled toner cartridges are difficult to be guaranteed because of the manual method used in the manufacturing process and the print quality is uneven. A general-purpose print cartridge can basically meet the output requirements of the printer in terms of print quality, but it may be different in some special cases, such as when printing 2 pounds of fine print. The printing process always seems to be very simple. Connect the printer and send one instruction to complete. It is the efforts made in each print detail that allow the user to go through this simple operation to get the desired print result. Users who use the printer often will realize that the edges of the characters printed on the printer with the original cartridge are clear, black and vivid, but the effect is far worse when other products are used instead. This is because engineers have conducted a large number of tests and improvements in the laboratory in order to optimize the printing effect, and even the smallest defects will be eliminated. Therefore, users who pay attention to print quality will not hesitate to choose the original cartridge.

Of course, printing costs are also an important consideration when considering print quality, especially for price-sensitive individual users. Many people think that the quality of the original product is good, but at the same time the price is relatively high. This is actually an incorrect understanding. A large number of objective tests show that the cost of single-page printing of the original cartridge is not very high and the overall cost is too expensive. It is also relatively low. The original toner cartridge saves users more money than the printer itself due to the long life of the work. Therefore, it is recommended to use the original cartridge. Universal cartridges are also brand-name products, product quality is also guaranteed, although its price is slightly lower than the original cartridge, but the number of prints is lower than the original cartridge, so the overall printing costs and the original cartridge is similar. As for the refilled toner cartridges, although the price is very attractive, but because the number of printed sheets is too little or even less than half of the original cartridges, the overall printing cost will never be lower than the original cartridges and universal cartridges.

Cartridge precautions

1. Avoid use and preservation under conditions of high humidity, high temperature, and high temperatures. Do not tear the seal on the toner cartridge until it is used. If the toner gets damp, it will block and affect the printing effect or cause the print color to be light. If the cartridge is stored in a hot or cold place for too long, use it at room temperature for a while before use.

2. Avoid exposing the toner cartridge to strong light for a long time. Do not open the cartridge when it is not in use. In particular, do not open the drum light barrier on the cartridge. If you continuously expose it to strong light for more than 10 minutes, the drum will be scrapped.

3. When replacing the toner cartridge, it is best to use a vacuum cleaner to clean the machine where the toner cartridge is placed. Use a soft cloth to clean the accumulated paper scraps and toner on the paper path. The exposed electrical contact strip can be wiped with a cotton swab and alcohol to maintain good electrical contact. Sex.

4, do not arbitrarily hand to turn the OPC drum core, OPC drum core must pay attention to the direction of rotation, if the direction of rotation is wrong, it will cause damage to the part when the print or powder stains when printing.

5, choose to print paper, do not use wrinkles, incisions are not uniform or thick, super hard paper, etc., will affect the print quality and wear photosensitive drum.

6. The toner cartridge should be shaken horizontally for 6-8 times before it is newly placed on the printer so that the toner is loose and evenly distributed, and then the sealing strip is pulled out. Otherwise, one piece of unevenness may occur.

7. Make sure the cartridge is clear of the monitor, hard drive, or any other magnetic material.

The toner in the toner cartridge is the key to imaging during the printing process. So what made these carbon powders eventually form a document on the page? First we need to understand what is called latent image. A drum is a cylinder coated with an organic material (selenium, a rare element) on its surface. It has a charge in advance, and when it is irradiated with light, an electrical resistance occurs in the irradiated part. The transmitted data signal controls the laser emission, and the light scanned on the surface of the drum continuously changes, so that some places are irradiated with light, the resistance becomes smaller, the electric charge disappears, and some places are not irradiated with light and still have charge. Finally, the surface of the toner cartridge formed a latent image composed of electric charges.

The toner in the toner cartridge is a kind of charged fine resin particles. The charge of the carbon powder is opposite to the polarity of the charge on the surface of the drum. When the surface of the charged drum passes through the ink application roller, the toner is adsorbed by the charged toner. Particles, then the latent image becomes a real image.

While the drum rotates while working, the printing system conveys the printing paper, and the printing paper is charged with the same polarity as the surface of the drum, but the electric charge is much stronger. Then the paper passes through the cartridge with toner, and the ink on the surface of the cartridge. The powder is attracted to the printing paper and the image is formed on the surface of the paper. At this time, the toner and the printer are merely combined by the attractive force of the electric charge. After the printing paper is sent out of the printer, the heated toner is melted and solidified on the surface of the paper during the cooling process. After the toner is attached to the paper, the drum surface continues to rotate past a cleaner that removes the remaining toner for the next printing cycle.

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