An experimental printer documented by Cambridge University scientists in a paywalled Royal Society paper is capable of laser-ablating the toner off of sheets of previously printed paper, leaving them ready to be reused. The device uses picosecond pulses of a green laser that passes through the cellulose in the paper, but vaporizes the toner.
The primary goal of unprinting is to cut down on the carbon footprint of the paper and printing industries. Manufacturing paper is incredibly messy business that produces millions of tons of CO2 every year. Recycling paper is definitely a step in the right direction, but it’s still a very resource-intensive process. If we could simply delete sheets of paper, rather than re-pulping them, we could cut down on electricity usage, CO2 output, and most importantly fresh water, which is growing more scarce by the year. It would also be rather handy if you never had to buy another ream of paper, too.
In a worst-case scenario, The University of Cambridge unprinting method has half the carbon emissions of recycling; best-case, unprinting is almost 20 times as efficient. It’s now a matter of building the technology into a commercial device, which the team admits is probably a long way off. High-powered picosecond lasers are the reserve of labs… for now!
The laser unprinter
Tiny micromotors about the width of a human hair traveled through a mouse’s stomach delivering antibiotics to treat a stomach ulcer. The motors are powered by bubbles. According to the researchers from the University of California San Diego, the microrobot-based treatment proved more effective than regular doses of the medicine. From New Scientist: The tiny […]
In 1971, astronomer Frank Drake, the father of the search for extraterrestrial intelligence, drew a map pinpointing Earth in our galaxy. That diagram, a “pulsar map,” was etched on a plaque designed by Frank and Carl Sagan and first carried into space in 1972 by the Pioneer 10 and 11 spacecraft. In 1977, the pulsar […]
Last night, NBC Nightly News aired the wonderful video below about the Voyager Golden Record vinyl box set I produced with my friends Tim Daly and Lawrence Azerrad! Forty years ago this month, NASA launched two spacecraft, Voyager 1 and 2, on a grand tour of the solar system and beyond, into the mysteries of […]
The Pry.Me Bottle Opener holds tens of thousands of times its own weight, and you can pick one up now from the Boing Boing Store.This remarkable keychain is considerably smaller than any of your keys, but don’t let that fool you: it can easily open any bottle, and could even tow a trailer full of […]
Guaranteeing your privacy online goes way beyond checking the “Do Not Track” option in your browser’s settings. To ensure that your internet activity is totally hidden from Internet Service Providers, advertisers, and other prying eyes, take a look at Windscribe’s VPN protection. It usually costs $7.50 per month, but you can get a 3-year subscription […]
This project management bundle will help you get organized and learn how to lead a team to success. You can pay what you want for these five courses when you pick them up from the Boing Boing Store.To help you become an invaluable asset for your company, this bundle includes a curated collection of professional […]