A team of scientists have created Water-Jet printer on 28 January 2014. The printer was created by the team of scientists at Jilin University of China.
These new water-jet printer use water instead of ink. The used paper fades back to white within a day, which enables it to be reused.
A dye compound called oxazolidine was used, which yielded a clear, blue print in less than a second after water was applied.
Many statistics indicate that about 40 per cent of office prints are taken to the waste paper basket after a single reading.
Water-jet technology allows each page to be reprinted dozens of times. This is money and tree saving option in a digital world that still relies heavily on hard copy.
The trick lies in the paper, which is treated with an invisible dye that colours when exposed to water, then disappears.
The print fades away within about 22 hours at temperatures below 35 degrees as the water evaporates, quicker if exposed to high heat.
Currently, four water-printed colours so far are available like blue, magenta, gold and purple, but can only print in one hue at a time, for now.
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