https://www.crowdsupply.com/open-tools/open-printer
@stevelieber Expect the government to interfere.
By secret agreements with printer manufacturers, laserjet printers print an invisible forensic dot pattern on all pages, uniquely identifying the printer it came from. The proffered reason for this is to track currency counterfeiters.
Since first revealed by the EFF's FOIA requests, the techniques have shifted, but the problem remains. And there's no reason to think inkjet printers are unaffected.
https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dots

Warning (Added 2015) Some of the documents that we previously received through FOIA suggested that all major manufacturers of color laser printers entered a secret agreement with governments to ensure that the output of those printers is forensically traceable. Although we still don't know if this...