Chemists fabricate novel rewritable paper


Despite a lot of discusses about a paper free workplace through the years, the pulp solution continues to be an essential part of our everyday life. And it isn’t likely to be disappearing in the near future. Rather than trying to find alternative ideas to get rid of paper, chemists from the University of California, Riverside (UCR) chose to do something to improve it, instead.

In contrast to standard paper that is made useless after it’s been printed on, the newly-developed prototype paper can get all of the contents erased, making it entirely blank and readily available for printing on all over again. Doing this, hundreds of reports you print out won’t have to be shredded and dumped after their practical use has passed – you just erase the printing and make use of the same sheets once again.

The rewritable paper is not used identically as standard paper. For example, you don’t really print on it using ink. Instead, it needs an ultra-violet printing method, in which the paper is subjected to UV light to produce the impressions on the sheet. For erasing, the sheet has to merely exposed to a temperature of 115 °C, that will result in the impressions to vanish and then leave the paper absolutely empty. It uses the solutions of redox dyes to achieve this task, whose color-switching attributes let the special printing method. Every sheet is created as a film created from plastic material and glass, with sufficient active substance to let it to be printed and erased as much as Twenty times, with no major reduction in contrast or resolution.





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