According to the January newsletter from the Indoor Air Quality Association, indoor air emissions from dry-process photocopy machines include: VOCs, as well as ozone, and particles. These emissions can contribute to adverse health effects such as eye, nose, and respiratory system irritation, and several are listed as hazardous air pollutants. Now researchers have confirmed that typical office copy machines are often a major source of VOCs in the office environment. A test of 4 photocopiers revealed compounds with the highest emission rates overall were ethylbenzene (28,000).