HP slammed for its 'unhealthy' printers

The majority of all the laser printers that are guilty of emitting particulate matter into offices are produced by HP according to researchers.

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The majority of all the laser printers that are guilty of emitting particulate matter into offices are produced by HP according to researchers.

The study, which appeared in the American Chemical Society's Environmental Science & Technology (ES&T) journal, measured emissions of 58 laser printers, including models from Canon, HP, Ricoh and Toshiba. Particle emissions, believed to be related to the ultrafine powdered toner, were measured and the printers ranked in several categories.

Of the 13 printers described 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. However, HP printers also made up the majority of those tested. Of the 58 printers researched, 48 - or 83% of the total - were from were HP.

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