Sean Zhang, a chemistry professor at Jilin University, and his team of researchers developed a water-jet printer that requires no ink to function and paper that changes color only when it’s wet.
While the ink-free printer might be a head-turner, the water-jet paper is actually the one stealing spotlight. Made with invisible dyes that only take color when dampened, this paper is suitable for general reading purposes. Its unique property allows it to be printed on and erased over 50 times, making it an ideal alternative for people who do not recycle. “So far, we’ve already achieved four different colors and the prints can last for 22 hours,” Zhang says. “The quality of the water-jet printing is comparable with ink-jet printing. Tests have also shown that the water-reactive dye is low in toxicity.
When costs are factored in, the researchers have noted that this style of printing should be one percent of the cost of ink prints per page. These costs reflect the paper’s reusability, as well as the fact that water is significantly cheaper than ink.
The Chinese researchers hope that these two improvements for the office may dramatically decrease our paper consumption and carbon footprint.
Source, Images: Txchnologist