Page "Laser printing" Paragraph 69

According to a recent study conducted in Queensland, Australia, some printers emit sub-micrometre particles which some suspect may be associated with respiratory diseases.

Of 63 printers evaluated in the Queensland University of Technology study, 17 of the strongest emitters were made by Hewlett-Packard and one by Toshiba.

The machine population studied, however, was only those machines already in place in the building and was thus biased toward specific manufacturers.

The authors noted that particle emissions varied substantially even among the same model of machine.

According to Professor Morawska of Queensland University, one printer emitted as many particles as a burning cigarette: