Nearly all the laser printers fingered by researchers for spewing particulate matter into offices and homes are sold by HP.
The article in the American Chemical Society's Environmental Science & Technology (ES&T) journal, measured emissions of 58 laser printers, including models from Canon Inc., HP, Ricoh Co. and Toshiba Corp. Particle emissions, believed to be related to the ultrafine powdered toner, were measured and the printers ranked in several categories.
Of the "high emitters" at least for me, they do not effect me personally. I don't have any of the offending models: 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.
Anyone want to go back to carbons? Elementary kids got high from those.