September/October 2007
Invisible Ink from Xerox
Cartridge works in standard printers.
By David Talbot
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Now you see it: The words “Row 9 Seat 17 Price” fluoresce thanks to a new printing technique.
Credit: Xerox |
Researchers at Xerox have come up with a way to add fluorescent words and images to documents like checks, coupons, and transcripts using standard printers. The technique makes it possible to create everyday documents that have telltale marks visible only under ultraviolet light.
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Massachusetts Institute of Technology