A careless slip while handling a printer cartridge at the office could leave an unsightly stain on your clothing. These stains can be a hassle to remove, and if you aren't careful, you could make the ...

Using laser light to remove toner from printed paper could lead to a new type of Xerox machine capable of both printing and “unprinting.” A new technique developed by researchers in the U.K. can ...

Researchers at the University of Cambridge have developed what they call a laser 'unprinter' - a device that is able to remove toner ink from paper. A production model would allow businesses to reuse ...