[tivert]

> I think this is right. Some book stores in the US even have print-on-demand machines inside the shop. See https://www.ondemandbooks.com/ for more info about the printers.

Here's a video of the machine in action: https://www.youtube.com/watch?v=qJUla8xJ5BM

[diamondap]

Thanks for posting that. That's pretty cool.