Exposure to fine dust and toner dust in the office has been a known problem for some time. Laser printers, fax machines, photocopiers and shredders are all significant sources of this kind of air pollution. The emission of fine particles from laser printers and copiers is the subject of a number of international studies. In Germany, a pilot study aimed at evaluating the impact of laser printers and photocopiers on indoor air quality was commissioned by the Federal Institute for Risk Assessment (BfR) and initiated in 2005 by the University of Giessen. On the basis of the study’s final report, delivered in early 2008, it appears that the use of toner-based office equipment is responsible for a significant increase in fine dust particles. According to the study, the increase in the concentration of particulate matter needs to be evaluated in terms of its impact on workplace hygiene, even if it has not yet been proved an active health risk. On the basis of current evidence, the BfR is already considering implementing appropriate preventive measures.
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