Green is more important, how to use laser printers healthily

[Office Partner Information Center] With the advancement of society and the continuous improvement of living standards, we are paying more attention to health issues in both the living environment and the working environment. Especially for office workers who are exposed to laser printer products, what are their disadvantages to human health and environmental pollution? Today, we focus on how laser printers affect the environment, and our users, How to use it healthily?

When it comes to how laser printers can adversely affect the environment, let's start with the working principle of laser printer products. Laser printers can be divided into seven steps: charging, exposure, development, transfer, fixing, cleaning, and power-off. 12

Charging process

The photoconductor surface of the laser printer is an insulator in the absence of light, in a neutral state, without any charge. To achieve an "electrostatic latent image" on the surface of a photoconductor, it must be charged on the surface of the photoconductor to charge it. Only in this way, when the laser beam is scanned onto the photoconductor, the photoconductor is turned on by the exposed point to form a beam lattice. The dot matrix charge and the substrate are turned on to form a "potential difference latent image". When the photosensitive drum is rotated to a position tangent to the developing magnetic roller, the magnetic roller is loaded with toner opposite to the surface charge property of the photoconductor and attracted to the surface of the photosensitive drum. Thereby, a toner image appears on the photosensitive drum.

In order to make the photosensitive drum absorb the toner according to the graphic information, the toner cartridge should be charged first. The charging electrode is a tungsten wire parallel to the photosensitive drum shaft, which has a DC high voltage of 5-7 kV, when the surface of the toner cartridge is When the tungsten wire is very close, the surrounding air is ionized to generate a corona discharge, which causes the photosensitive drum to be charged. The positive and negative voltages are determined by the voltage of the tungsten wire. If the photoconductive material is a selenium-tellurium alloy, it is positively charged, and the entire surface is charged after the photosensitive drum rotates for one week. The method of charging the photosensitive drum by the laser printer has different charging methods depending on the model, but the charging principle is basically the same, and the surface of the photosensitive drum is charged by the corona discharge of DC high voltage.

During the entire charging process, the photosensitive drum adsorbs the charged toner, which is the stage where the first link is most likely to affect the environment. In this process, if the user uses compatible consumables or fills the toner, it is easy to cause the toner to be released into the air as the adsorption process is carried out, and the released toner is an extremely small particle. This kind of granules can accompany our breathing into the lungs, which will definitely affect our health in the long run.

Development process

When the electrostatic latent image formed on the surface of the photosensitive drum is developed to reveal a toner image, the process is "developing". The developing operation is performed by the developing device, and its function is to change the electrostatic latent image into a visible image.

When we put the paper into the machine, the paper is filled with a negative charge before it comes into contact with the drum. When the printing paper is in contact with the photosensitive drum, the electrostatic latent image with a positive charge will attract the negative charge on the printing paper, thereby adhering to the printing paper, and heating the thermal toner to the outer circumference of the toner particle of the printer. Adsorption with paper fibers ultimately results in a printed image. Finally, the printer automatically removes the toner remaining on the drum and corrects the potential so that the next cycle begins.

During the second stage of development, the process of removing the toner from the printer by the thermal transfer unit and the photosensitive drum may cause the toner to leak. Especially in thermal transfer units, those who use compatible toner cartridges and powders are more dangerous.

As the temperature of the thermal transfer unit increases, not only will the toner be leaked out, but it will also result in the generation of more harmful gases, which will cause more damage to the human respiratory tract and lungs.

After understanding the hazards of laser printing products, we should take more measures to deal with the harm that laser printing products may cause to our health.

Protecting health - toner is the key

Because toner is not only the most important imaging material of laser printers, but also affects our health and even affects the entire environment of the earth. Next, I will introduce what is good toner.

What is a good toner? Original, imported, domestic Tianwei, they are in line with the standard of good toner. In particular, the “bioactive toner” launched by Tianwei has become environmentally friendly and has become a new standard for good toner. The most important imaging components of toner are resin and carbon black. Good toner, such as original, imported, domestically produced Tianwei and other high-quality consumables, the resin accounts for the majority, more than 25%, and the inferior Toner is almost entirely carbon black, and carbon black is the culprit that has a harmful effect on the human body.

Good toner should have the following conditions:

1. Fine: The toner particles are fine and uniform. Many people have a misconception about the printing effect, thinking that the blacker the printed words, the better. No, this should be considered from two aspects, one is the black of a fine toner, and the other is the black of a coarse toner, which is a completely different concept. Fine black toner: Original, imported and domestically produced Tianwei toner is very fine, because the technical content is quite high, so there are relatively few manufacturers that can produce. The blackness of this type of toner is as high as possible, the degree of fixation is relatively high, and the phenomenon of powder removal is rare, so the number of printed pages is greatly increased while the blackness is guaranteed. Black of coarse toner: Most substitute powders use carbon black as raw material, and the blackness is very high. Because the particles are large, the degree of fixation is extremely low, and the phenomenon that the printed document is powdered or the printer is leaking powder often occurs. Moreover, carbon black contains polycyclic aromatic hydrocarbon series and dimethyl nitramine, which are carcinogens of No. 3 and No. 4, respectively. These substances are exerted during fixing heating, and are directly absorbed by the body through breathing, which jeopardizes the health of the operator.

2. Environmental protection: Tianwei uses plants as raw materials to produce “bioactive toner” which is very beneficial to environmental protection, and will become the future development direction of toner.

In addition to good print quality, good toner is also extremely important, it is environmentally friendly and energy-saving! Because it affects the entire environment of the earth. Everyone knows that the waste caused by the office is a very important culprit in the current environmental deterioration. Therefore, the government is encouraging the use of recycled toner cartridges, recycled paper and so on.

In fact, toner can now achieve the task of environmental protection. Zhuhai Simei, a company of the domestic brand Tianwei, recently developed a kind of “bioactive toner”, which I believe has not been heard by many people. The bioactive toner is realized in the resin, which is an important component of the toner. By using renewable resources such as feed corn, sugar cane, high sugar sweet potato, and other resin crops grown and harvested, we reduce the current The more dependent on the dependence of petroleum resources.

Remember to choose carefully when choosing toner, the most important thing is the right one. Imported brands or domestically produced Tianwei are the first choice for toner, especially bioactive environmentally friendly toner, and remember not to add powder yourself, please Look for a professional master to do the work, or choose to add powder to the "additional powder", how is good, remember to bring a mask. At the same time of high print quality and low price, remember to think about your health and the environment of the earth.

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