Laser printers produce carcinogens

According to a recent report about 30% of laser printers in the office produce high levels of carcinogenic particulates in the air. The suggestion is to keep rooms ventilated and take care when using new cartridges and when doing graphical work. Otherwise having printers in your office can be as dangerous as passive smoking.

Manufacturers deny their printers provide a carcinogen risk but advise using them in 'well-ventilated areas'. Its a safe precaution.