Printer ink cartridges are not only ridiculously expensive, but also environmentally friendly. Even so, they do not hinder sales. After all, no one likes the experience of reading on the screen. Our Chinese scientists have invented a new ink technology that can completely replace the color ink in the ink cartridge with water.
Zhang Xiaoan, a professor of chemistry at Jilin University, and his team have developed a technique to replace ink with water. Zhang Xiaoan is well aware of the harm to the environment caused by ink cartridges. The disappearance of forests will aggravate the energy crisis and the greenhouse effect, but office workers around the world like to print useless information such as e-mail to paper (according to the statistics office, 40% of the documents are used only once , Americans produce 70 million tons of waste paper a year), Zhang Xiaoan uses a special paper that changes color when wet, making it possible for water to change ink.
Zhang's team called this technology "water-reproducible printing technology", which pre-processes the paper, pre-coats the invisible dye on the paper, the dye changes color when it meets water, and can be printed again after the water evaporates.
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