www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
China / Society

Chemists pioneer water-jet printing

(China Daily / Xinhua) Updated: 2014-02-18 02:04

Most people are familiar with ink-jet printing. But a team of chemists from Jilin University has attracted worldwide attention by inventing a water-jet printer.

Like any printer, the machine takes a blank page and covers it with print. But instead of ink, it uses water.

Although this means the text will fade within 22 hours of being printed, Zhang Xiao'an, professor and leader of the team, said that 40 percent of printed pages are thrown away after being read only once anyway.

In addition, the printer can switch between water and ink in case the user wants a more permanent print.

What makes the technology work is the paper. But it's not some magic paper as one might assume. Zhang said, "The paper we used in our experiments is a common type that people can get anywhere."

The trick is that the paper is treated with an invisible dye that becomes visible when exposed to water. The dye slowly fades over time, with higher temperatures causing it to fade more quickly.

Therefore, water-jet printing allows one page to be reprinted dozens of times. It can help offices save money on paper.

Although chemical treating is involved, the cost is still relatively low. "According to our calculation, dye-treating the paper that is generally used for printing adds only 5 percent to the price. So it's very cheap," said Zhang.

What's more, this technology "is not only money-saving, but also environmentally friendly", Zhang added.

According to the Ecology Global Network, nearly 4 billion trees or 35 percent of the trees cut down around the world are consumed by the paper industry.

On the other hand, "water is a renewable resource and obviously poses no risk to the environment", according to the team's study.

Zhang said toxicity tests conducted on animals showed that the treated paper is safe.

The chemists will continue their research to improve the quality and durability of the print. They also hope to work with interested companies to explore the possibility of commercial production.

The research team previously published its achievement in the scientific journal Nature Communications.

Highlights
Hot Topics
...
主站蜘蛛池模板: 高清一级毛片免免费看 | 亚洲精品无码专区在线播放 | 亚洲欧美另类在线视频 | 午夜免费的国产片在线观看 | 日本b站一卡二卡乱码入口 日本s色大片在线观看 | 国产精品久久久久久久久久久久 | 亚洲视频免费在线 | 欧美激情伦妇在线观看 | 国产免费久久精品99久久 | 成人a毛片在线看免费全部播放 | 欧美三级不卡视频 | 久草视频福利在线观看 | 日韩在线免费 | 国产精品视频久久 | 香港三级日本三级人妇网站 | 步兵精品手机在线观看 | 成年男人午夜片免费观看 | 国产盗摄一区二区三区 | 免费黄色网址在线播放 | 国产精品久久久久久久久免费hd | 午夜精品久久久久久91 | 最新主播福利视频在线观看 | 亚洲另类激情综合偷自拍图 | 九九在线免费观看视频 | 岛国毛片在线观看 | 日韩欧美国产精品第一页不卡 | 亚洲综合国产一区二区三区 | 国产在线成人一区二区 | 国产精品久久久久久久久久日本 | 国产性较精品视频免费 | 国产成 人 综合 亚洲绿色 | 亚洲 自拍 欧美 综合 | 天天五月天丁香婷婷深爱综合 | 毛片欧美 | 直接在线观看的三级网址 | 美国三级网站 | 亚州一级毛片在线 | 日本不卡免费高清视频 | 色婷婷色综合激情国产日韩 | 成人黄页 | 手机国产精品一区二区 |