The hazards of printers mainly include the following aspects: carbon powder and carbon powder particles can not be melted and excreted in human body, and long-term or disposable inhalation is easy to cause respiratory diseases, and carbon powder is a little toxic; I don't need to explain the harm of laser to human body, but generally laser printers have protective measures, as long as they don't take the initiative to open the cover and print, there will be no problem; What's more, as the above netizens said, the printer fixing mode is realized by melting toner particles at high temperature, which has a certain odor when printing and is harmful to human body, so you can't stand by and wait for the printer when printing. It is best to put the printer away from the human body; Electrical products will inevitably have radiation, and the printer circuit has high voltage generating circuit and high temperature generating circuit. Don't touch the high-temperature and high-pressure parts with your hands at will. These hazards are just general hazards, so don't feel terrible. Everything has a good side and a bad side, that is, the mobile phone and computer you use have electromagnetic radiation, and you can't stay away from them because of this harm. Moreover, HP's products have been carefully protected in these aspects at the time of design, and the current laser printing technology is very mature for HP, so don't worry too much. Laser printers, copiers and other output devices surround us. When they work, a large number of organic waste gases such as benzopyrene and dimethylnitrosamine are also around us. These organic gases are pathogenic, teratogenic and carcinogenic. A research report recently published by researchers of the British Allergy Foundation also pointed out that office equipment will release ozone gas harmful to human health, and the culprit is laser printers, photocopiers and other equipment. For example, in a laser printer, a laser head is used to scan a toner cartridge, and high-voltage electrostatic adsorption of toner is generated on the toner cartridge, so that high-voltage charges on the surface of the toner cartridge ionize oxygen in the air to generate ozone. In addition to harmful waste gas, laser printers, photocopiers and other equipment in the office will also release a certain amount of radiation waves and low-frequency electromagnetic radiation during operation, which is easy to cause human central nervous system disorder. People pay more and more attention to healthy office products, users begin to choose healthier and more environmentally friendly products, and manufacturers are constantly introducing "green products", such as fluorine-free refrigerators replacing fluorine-containing refrigerators, non-radiation LCD replacing radiation CRT, and environmentally-friendly concept cars replacing over-standard cars. Meiying Company, a domestic commercial printer supplier, has introduced a disposable LED high-speed commercial color printer, which can not only provide users with high-speed and efficient printing functions, but also save energy and protect the environment. LED technology, also known as LED technology, is one of the most advanced imaging technologies in the world. Through the continuous research of the scientific community and professionals, replacing new chemicals and improving the internal system, the high brightness of LED has reached an unprecedented height, and the use of light sources has become more abundant. Moreover, LED can directly generate bright light source under low voltage, and the ozone generated by high voltage inherent in the operation of traditional laser printers is gone. As a new generation of health products, LED color printers have been popularized and applied in the European market, which attaches great importance to environmental protection, because they save energy and do not produce ozone. Just as non-radiation LCD replaces radiation CRT, it can be said that it is only a matter of time before a healthy and environmentally friendly LED color printer replaces a polluted laser printer.