[supernova87a]

I don't know where to find a picture of it, but I remember seeing a video of one of their book scanners. Or maybe it was just one version of them.

Picture a wedge (shaped like the V of a book lying open on a table) that could move up and down. The wedge would descend and insert itself into the V of the book's pages, then rising up would suck the 2 left and right sheets against the sides of the wedge, scanning as it went.

Then it would blow those 2 pages to the left (or right I forget) and descend again and do the next set.

I thought it was pretty cool. Have never seen something like it since.