From the article:
On a good day this reader gets through as many as 1,216 pages per hour. Hissing quietly, devouring book after book. Now and then it says, "Pffft."
This is a state-of-the-art robot at work. It automatically scans every book placed open in front of it. A slender wedge drops down to the fold, sucks in a page from left and right and lifts the goods. It's photographed and with a gentle puff of air -- pffft -- the robot flips the page.