The experimental printing technology came out of a collaboration between the Xerox Research Centre of Canada and the Palo Alto Research Center. According to an online release, the "aha" moment came for Xerox researchers when they developed compounds that change color when they absorb a certain wavelength of light but then will gradually disappear. As it stands now, the paper erases itself in a 16- to 24-hour range. The paper then can be reused.
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И выражение "Someone once told me that a verbal request is as good as the paper it’s written on" станет реальностью...