Printers and copiers are all radiation:
Printer: there is an electric current will produce electromagnetic waves, not energized is no radiation, energized is generated after the electromagnetic wave radiation . Especially the electronic coil and fan parts of the largest radiation, it is best to maintain a distance of more than 30 centimeters.
Copier: electronic equipment, radiation is certain to have, but between the frequency of the problem, there are electromagnetic waves generated by the human damage is very small.
The toner in the printer is not good for the body;
The exhaust gas produced by the copier - ozone, etc. will directly oxidize the skin, copying by the beginning of the stand far away (30 centimeters away from the almost), print and then close to the paper;
Prevention of radiation can be wearing protective clothing;
Radiation is generally not much, and have problems are The cumulative effect of the day.