As I understand it, it's also pretty hard to get right: https://www.newyorker.com/magazine/2018/02/12/why-paper-jams-persist https://www.newyorker.com/magazine/

As I understand it, it's also pretty hard to get right: https://www.newyorker.com/magazine/2018/02/12/why-paper-jams-persist https://www.newyorker.com/magazine/2018/02/12/why-paper-jams... / https://archive.vn/SJlAS https://archive.vn/SJlAS “The tolerances are very tight,” Ruiz said. “When you’re moving a box from here to there, if you’re off an inch it’s probably fine. But our images cannot be off by more than eighty-five microns”—a third of a thousandth of an inch—“or else they’ll be fuzzy.”