Just cuz this was raised again... here are a couple links to some of the technology scanners have developed recently.
A laser system to detect the pages curvature (fairly slow by todays standards - only 250 pages/hr):
https://youtube.com/shorts/4ZB9nA2V1...7mHa6Jy74_rHKa
A non-destructive scanner that can do upwards of 3000 pages/hr:
https://youtu.be/cmhIJOqepVU?si=J8jYxYLzjqqTCe3v