Water to replace ink in your printer!
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By FPJ Bureau:
Beijing : Imagine
a simple printer at your office or home that uses water instead of ink to print
reams of papers, says IANS. Possible, say Chinese researchers. But the catch is
not in the printer but the paper.
According to scientists at Jilin University in Changchun, China, the printed
characters last for a day on a special paper that can then be re-used. “Every
time you print, it’s fresh,” Sean Zhang, professor of chemistry, was quoted as
“We are using a commercially available inkjet printer. We just filled the
cartridges with water and put it back. It’s like normal printing. The magic is
in the paper,” Zhang, a former researcher at Hewlett-Packard Labs in Menlo Park,
California, told DiscoveryNews.
This method allows the paper to be reused several times and could potentially
have cheaper running costs. How did they produce this special paper?
The team developed a special coating on the paper that responds to the water.
They were able to print various Chinese and English characters using blue,
magenta gold and purple colours, using water as a key that activates the dye
molecule. “The next step is to combine colours to go black,” Zhang added.
According to Kira Barton, professor of mechanical engineering at the University
of Michigan, “going toward more sustainable techniques of printing is helpful
Free press journal )
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