But the real driving force that made the calculator so popular was the large number of people who found that they could use it to understand how much printer ink is used in printers, and that they could also use the calculator to estimate the amount of ink used by a given device. (If you're interested in the background of the interest in PDF ink coverage calculators, see the original blog post.) Although Brown's discovery happened in 2006, he was the one who made the application public as well as bringing together a group of computer scientists from all over the world to work on making a calculator available that was able to estimate a PDF ink coverage.
