Manufacturers of printing products continue to innovate over the years. One new technology that has improved printing quality is called nanoprinting, which refers to using tiny particles in toner cartridges that are less than 100 nanometers. The bad news? These microscopic particles can cause health problems for people who work in office environments. According to the Harvard School of Public Health, nanoparticles "are able to reach deep into the lungs when inhaled, potentially causing respiratory and cardiovascular damage." To create a healthier office, place printers in well-ventilated areas away from people. And when running large printing jobs, stay clear of the machine until it's done.