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
Backed by huge donations from vitamin companies, the American Association of Naturopathic Physicians is pushing to get naturopathic medicine recognized and regulated in all 50 US states, paving the way to receiving public funds in the form of Medicare reimbursements.
In California today, a grand jury indicted the Plains All-American Pipeline and one of the oil company’s employees on criminal charges over the massive 2015 oil spill in Santa Barbara County.
Thomas Manning, 64, is recovering after receiving the first penis transplant in the United States. Manning had his penis amputated in 2012 due to penile cancer. It took 15 hours for surgeons at Massachusetts General Hospital to complete the transplant, medically known as a “gentitourinary vascularized composite allograft.” The surgery involved “grafting the complex microscopic […]
If you or your company’s IT system are besieged by black hat cyber attacks, an ethical hacker might be all that stands between crippling damage and a company’s long-term prosperity. It’s no wonder that the market for IT security specialists is exploding. Certification is the key – so learn the tenets of ethical hacking and get […]
Your laptop and mobile devices are top of the line…so why are you trotting out that raggedy decades-old suitcase when you go somewhere? Time to up your travel game with a complete 5-piece Herschel Travel Luggage bundle…and we’ll even give it to you for free!Of course, you’ve got to win the Ultimate Herschel Travel Bundle […]