Study shows high toner dust emissions in laser printers

A study has found high levels of toner dust being emitted by some of the most popular laser printers.

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A study has found high levels of toner dust being emitted by some of the most popular laser printers. Although experts say the the danger posed by the dust is small, there is some evidence that high concentrations of toner dust could contribute to respiratory problems in users.

The research, conducted by the American Chemical Society's Environmental Science & Technology (ES&T) journal, measured emission levels of 58 laser printers, which included products from Canon, Hewlett-Packard, Ricoh and Toshiba. The emissions are connected to the granular pieces of powdered toner and the printers ranked in several categories.

Thirteen printers were categorised by researchers as "high emitters", 12 were made by HP, including the Color LaserJet 4650dn Color LaserJet 5550dtn Color LaserJet 8550n LaserJet 1320n LaserJet 2420n LaserJet 4200dtn LaserJet 4250n LaserJet 5 LaserJet 8000dn and the LaserJet 8150n.

HP printers did, however, make up the majority of those tested, said researchers.

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