Print with “light”

In life, people are accustomed to the ubiquitous printing, from the receipt of supermarket receipts to the advertisement of movie posters, and the fact that printing is inseparable from ink, toner and paper is an indisputable fact. However, some people have thrown an eye-opening theory: print without ink, toner, and print with light. Print with light? Isn’t this a bit unreasonable and taken for granted? Many people have questioned this.

However, scientists are arguing that printing on paper is the latest printing technology and is cheaper and more environmentally friendly than traditional printing. So, how exactly does light print? Will it not be reliable? People who are used to printing ink and toner still can’t understand the mystery.

In order to understand the questions in the hearts of everyone, scientists took everyone into the laboratory.

In the laboratory, scientists made a new coating consisting of two kinds of particles: one is the blue pigment of Prussian blue; the other is titanium dioxide. Miraculously, after UV exposure, the new coating is like magic. The activated titanium dioxide releases electrons, turning Prussian blue into a colorless, “printing” blank area. After scientific measurement, the information printed on the page can be displayed for at least 5 years before it turns into a blue color. However, it is also unbelievable that when the coating is heated to 120 ° C, the blue color can be reversed and turned white again. That is to say, the coated paper coated with nanoparticles can be reused as long as it is heated. According to scientific calculations, this latest high-resolution photolithography technology has been reused more than 80 times.

Since this coating can be used on ordinary paper with only a single spray or soak, researchers believe that this technology will become cheaper after commercialization. If used in newspapers and labels, not only can reduce the cost of ink and paper, but also greatly reduce recycling and environmental costs, the attractiveness of this new technology can be seen.

In the near future, a photoprinting printer will appear in life, and you will be able to print materials in light.