A Rutgers-led team has created a new way to "unprint" paper.
The new method uses pulses of light from a xenon lamp, and can erase black, blue, red and green toners without damaging the paper, according to a study in the Journal of Cleaner Production.
Our method makes it possible to unprint and then reprint on the same paper at least five times, which is typically as many times paper can be reused with conventional recycling. ~ Rajiv Malhotra, assistant professor at Rutgers University
Conventional recycling of coated paper is a major contributor to climate change emissions, chemical pollution and energy use, according to the study. Extending the life of paper while avoiding these recycling steps would yield significant environmental benefits.
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