British researchers say they've developed a laser process that can "uncopy" toner ink from paper as an alternative to traditional recycling. Scientists at the University of Cambridge say the process involves short laser pulses to erase words and images by heating the printed material to the point that it vaporizes. The technique works with commonly used papers and toner inks and is more eco-friendly than recycling, they said. "When you fire the laser, it hits the thin toner layer and heats it up until the point that you vaporize it," researcher David Leal-Ayala told the BBC. "Toner is mostly composed...