> I don’t think printer drivers do anti-aliasing on text. The hardware of a printer does anti-aliasing for free.
You missed the explanation above why you're wrong, at least on consumer non-PostScript printers. Most cheap printers nowadays passes the buck of rasterisation to Windows (and its horrible, security headache spooler). You can even check if which is which: in Windows 10, open Settings, then Devices, select Printers & scanners, select [your name of printer], press Manage, press Printer Options (not Printing options), open the Advanced tab and then click on the Print Processor... button. If it says "winprint" then Windows handles the rasteriser.
Anti-aliasing text is of limited value at the resolutions printers can achieve. 1200+ DPI inkjets and lasers have been commonplace for over 20 years. That doesn't mean GDI variations won't influence pixels due to small numeric differences.
In that case, then it'll be purely a mechanical thing. Another thing that is still handled by the printer (unless its drivers are sophisticated, winprint isn't) is halftoning, but I'm not sure if that counts as anti-aliasing.
You missed the explanation above why you're wrong, at least on consumer non-PostScript printers. Most cheap printers nowadays passes the buck of rasterisation to Windows (and its horrible, security headache spooler). You can even check if which is which: in Windows 10, open Settings, then Devices, select Printers & scanners, select [your name of printer], press Manage, press Printer Options (not Printing options), open the Advanced tab and then click on the Print Processor... button. If it says "winprint" then Windows handles the rasteriser.