Ever wonder if that laser printer nearby is poisoning you?

I came across this report recently and found it interesting since I use many of these products.  The International Laboratory for Air Quality and Health, Queensland University of Technology did a study to determine how much particle emission and other matter is emited by laser printers.  Most printers did well, but some printers commonly used in business environments could be making you sick.  Click here to get the article and study.

“Summary of Results for Printer Emission Investigations, Based on the Ratio of Submicrometer Particle Number Concentration Peak Value Emitted by the Printer to the Background Value (measured by P-Trak)”

non-emitter (ratio 1) low level emitter (ratio < 1.1-5) middle level emitter (ratio < 5.1-10) high level emitter (ratio > 10)
HP Color LaserJet 4550DN (1) Canon IRC6800 (1) HP LaserJet 1020 (1) HP Color LaserJet 4650dn (1)
HP Color LaserJet 8500DN (1) HP LaserJet 5M (3) HP LaserJet 4200dtn (1) HP Color LaserJet 5550dtn (1)
HP LaserJet 2200DN (1) HP LaserJet HP Color LaserJet 8550N
HP LaserJet 2300dtn (1) 9000dn (1) (1)
HP LaserJet 4 plus (1) RICOH HP LaserJet 1320N (1)
HP LaserJet 4000N (1) CL3000DN (1) HP LaserJet 1320n (1)
HP LaserJet 4000TN (1) HP LaserJet 2420dn (1)
HP LaserJet 4050N (2) HP LaserJet 4200dtna (1)
HP LaserJet 4050TN (6) HP LaserJet 4250n (old)
HP LaserJet 4si (1) (1)
HP LaserJet 5(b) (1) HP LaserJet 4250n (new)
HP LaserJet 5000n (1) (1)
HP LaserJet 5100tn (2) HP LaserJet 5(a) (1)
HP LaserJet 5N (2) HP LaserJet 8000DNa (1)
HP LaserJet 5si (1) HP LaserJet 8150N (1)
HP LaserJet 5si/NX (1) TOSHIBA Studio 450 (1)
HP LaserJet 8000DN (2)
HP LaserJet 8150DN (3)
Mita DC 4060 (photo copy) (1)
RICOH Aficio 2022 (1)
RICOH Aficio 3045 (1)
RICOH Aficio 3245C (3)
RICOH Aficio CC3000DN (1)
TOSHIBA Studio 350 (1)
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