Yeah! CUPS is great. I just connected my Brother printer to it and everything Just Works.

Cups is awesome. I have an ancient HP laserjet 1100 connected to an ancient parallel-to-Ethernet adapter, connected to my ancient router. Cups works flawlessly with this setup, Windows never worked.

Android has a cups client app, so you can use that instead of Google's printing service.

It's on f-droid.

At least someone has had good experiences with CUPS lol. cupsd is usually the first thing I uninstall when I install Linux onto a PC since it never works.

They feed one at a time.

See this is what I hate about all these propreitery bs. They don't put the option to select alternative because "user too dumb."

FYI: CUPS was recently outed as extremely insecure and irrevocably broken by design. So if you're not actively printing, it's probably best to uninstall it.

Usually the print service is implemented by the printer manufacturer. Maybe try installing one or both of these apps, I needed them to print, and it worked fine after that:

https://play.google.com/store/apps/details?id=com.brother.mfc.mobileconnect

https://play.google.com/store/apps/details?id=com.brother.mfc.brprint

I'm sure there's some way to use PS or PCL printing from Android too, but that's probably a lot more effort.

You could print to CUPS from the other devices and potentially bypass all those shenanigans.

Also, CUPS has a PDF printer which saves you from even heating up your printer at all .. I haven't had a printer in my life for over 25 years.