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Do you be seated next to an office laser beam printer that’s in heavy use? Perhaps you have ever before wondered whether it could be doing you harm? Well, this field is still in its infancy, but researchers have demonstrated that laser printing creates a shower of tiny particles, which stay in the air and…

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A laser (typically, an aluminium gallium arsenide (AlGaAs) semiconductor laser) projects a graphic of the page to be printed onto an electrically billed, selenium-coated, rotating, cylindrical drum[10] (or, more commonly on subsequent versions, a drum named an organic photoconductor manufactured from N-vinylcarbazole, an organic and natural monomer). Photoconductivity enables the billed electrons to fall from…