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Some laser printers are as danagerous as cigarette smoking...

hp_laserjet_1320_b.jpg
A group of researchers have concluded that some laser printers emit dangerous particles when used.  These particles are similar to those that are found in cigarette smoke.  One printer tested actually releases particles at a level similar to what you would get by actually smoking, so it would seem that laser printers may be as hazardous to your health.  There is a post about the study on CyberNet News at http://tech.cybernet...as-cigarette-smoking, and it was initially reported by VNUNet.com (http://www.vnunet.co...ers-seriously-damage).

Of the 62 printers tested, only 17 emitted particles that may be hazardous to your health.  The article was published by the American Chemical Society, and is not publically accessible at this time.  If you can access their online article repository, you can read the whole thing (see the article citation at the end of this post).  The university that my wife attends has a subscription, so I was able to read the study.  Most of the article is pretty hard to follow, but here is the list of tested printers and the results:

No emissions
  • HP
    • Color LaserJet 450DN and 8500DN
    • LaserJet 2200DN, 2300dtn, 4 plus, 4000N, 4000TN, 4050N, 4050TN, 4si, 5(b), 5000n, 5100tn, 5N, 5si, 5si/NX, 8000DN, 8150DN
  • Mita
    • DC 4060
  • RICOH
    • Afico 2022, 3045, 3245C, CC3000DN
  • Toshiba
    • Studio 350

Low level emissions
  • Canon
    • IRC6800
  • HP
    • LaserJet 5M and 9000dn
  • Ricoh
    • CL3000DN

Mid-range emissions
  • HP
    • LaserJet 1020 and 4200dtn

High emissions
  • HP
    • Color LaserJet 4650dn, 5550dtn, 8550N
    • LaserJet 1320N, 1320n, 2420dn, 4200dtn (possible), 4250, 5(a), 8000DN (possible), and 8150N   
  • Toshiba
    • Studio 450

Of the high emission printers, the HP LaserJet 1320N is the worst with emissions close to cigarette smoking.

(all data from  He, C., Morawska, L., and Taplin, L. "Particle Emission Characteristics of Office Printers." Environ. Sci. Technol., 2007,  10.1021/es063049z)


ps. the original article was first described here and then picked up by cybernet: http://www.vnunet.co...ers-seriously-damage


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