Heartless Gamer writes "Xerox has lifted the veil from some of its research and development work in the field of printing. They demoed the very intriguing 'transient documents.' These offer the prospect of reusable paper in the sense that the content is automatically erased after a period of time, ready for fresh printing. Inspired by the fact that many print outs have a life-span of a few hours (think of the emails you may print out just to read, or the content you proof read on the train journey back home), the specially prepared paper will preserve its content for up to 16 hours."
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