An excerpt from the Washington Post -
This new copier gives you an option to erase what you’ve printed
By Hayley Tsukayama
To reuse a piece of paper, the printer essentially uses the same process as a normal printer, but in reverse, Melo said. Paper printed with the eraseable toner is fed back into the printer, super-heated, and the toner gets removed and put in a discard tank. The process generates a high enough heat that there is little danger of losing your information if, say, you keep the sheets in your car on hot day.
There are a couple of catches. All of the printouts using the eraseable toner have to be in blue ink, which is the only color in which eraseable toner is now available. And the company said that people may want to stop reusing the printouts after five times through the eraser because small traces of erased text will build up over time.
The $15,420 printer is aimed at offices and schools, where there are often large numbers of printouts that outlive their usefulness quickly. With the eraseable toner, it’s possible to load any short-lived handouts back onto the printer to be erased and then reused.
https://www.washingtonpost.com/news/innovations/wp/2017/06/19/this-new-copier-gives-you-an-option-to-erase-what-youve-printed/?utm_term=.4fc9d6f2c1bb&wpisrc=nl_rainbow&wpmm=1
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