Health hazards of printer powder adding operation

The main component of toner is not carbon, but mainly composed of resin, carbon black, charging agent and magnetic powder. Carbon powder melts into paper fibers at high temperature, and resin is oxidized into gas with pungent smell, which is what everyone calls' ozone'. This gas has only one advantage, that is, it protects the earth and reduces the harm of solar radiation. It is not good for the human body itself, it will cause irritation to the human mucosa, and it is easy to increase the incidence of asthma or nasal allergy, and even dizziness and vomiting. Some substitute powders are mostly made of carbon black and contain polycyclic aromatic hydrocarbons and dimethyl nitramine, which are carcinogens No.3 and No.4 respectively. These substances play out during fixing and heating, and will be directly absorbed by the human body through breathing, endangering the health of operators. Main uses: At present, it is mainly used as consumables added in laser printers and copiers. 1. The main components of magnetic toner (toner) for laser printer are F-Fe3O4 crystal powder (PLGMENT): 20-30% polyacrylate-styrene * * * polymer: 50-60% charge regulator CCA: 10-20% surface modifier polyethylene/polypropylene paraffin II. Non-toxic control of toner All kinds of raw materials of toner can be non-toxic if they are standardized (such as original manufacturers or Mitsubishi toner, Bachuan toner, Huazhong toner, etc.). According to AMES- test, it is difficult to meet the requirements of non-toxicity for all kinds of bottled loose powder in the market due to the limitations of production technology and other conditions. Some toner on the market is toxic. Many bulk or bottled toner in the market (the origin and address are unknown) vary greatly in size, ranging from 5- 12 micron, due to the equipment, technology, raw materials and environment of the factory. The polymerization degree of polyacrylate-styrene * * * polymer, that is, molecular weight and its distribution, is very important. If it is too big, it can't be fixed (causing false black). If it is too small, small molecules of toxic styrene gas will escape. Working in an environment close to using this toner printer for a long time will do harm to human body, and the probability of cancer will be 4% higher than that of normal people. At the same time, it will pollute OPC drum and MR magnetic roller, which will lead to poor printing of selenium drum. Toner can be divided into magnetic toner and non-magnetic toner, and the composition ratio of toner used in different models is different. Many bottled toner and bulk toner are indistinguishable, and only one kind of magnetic toner is mixed. When using the wrong toner or inferior toner, it will not only do harm to human body and environment, but also damage the printer and affect its service life. Four. The potential harm of filling carbon powder to human health When the toner cartridge is filled with powder without strict environmental protection, small particles (invisible to the naked eye) will fly in the air, and the probability of cancer after repeated contact and inhalation is about 65,438+00% higher than that of normal people. When the surface modifier polyethylene/polypropylene paraffin is inhaled into the body, its small particles will be absorbed into the blood circulation system and finally colonized in the kidney. Suggestions on control measures in practical work In order to effectively eliminate or reduce the harm of toner to human body and environment and save printing cost, Bian Xiao suggested: 1, try to use environmental-friendly toner cartridges of regular companies or brands; 2. When you are not sure whether the filled toner is non-toxic, please keep the printer away from the human body and place it in a ventilated place, such as using a copier; 3. Try not to fill the workplace with toner. If necessary, the filling process should be carried out under strict environmental protection in the factory, and qualified and standardized toner should be filled; 4. If it cannot be filled under environmental protection, try to fill it in a windy place in the wild and burn the waste powder and materials stained with carbon powder.