Use a laser and save a tree(16/04/2012)
Laser 'un-printers' that can remove toner from scrap paper so that it can be used again may be coming to an office near you in the future, results from a new Cambridge study show. Dr Julian Allwood, leader of the Low Carbon Materials Processing Group at the University of Cambridge, and David Leal-Ayala, a PhD student in the group, tested toner-print removal from paper by employing a variety of lasers.