Xenon Lamp Unprints Paper

Xenon Lamp Unprints Paper
A novel new ‘unprinting’ technology completely removes toner from paper with pulses of xenon light.

The technology, developed by a team led by Rutgers, can be used with the semi-gloss coated paper commonly used in home and office printers—a limitation with other ‘ink-erasing’ techniques. The method relies on a xenon lamp placed just above the paper that emits pulses of light able to break down the bonds in black toner. The now-weakened toner ink can be removed with a simple ethanol wipe, allowing the paper to be reused up to five times.

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