Can't print to USB printer through my AirPort Express
I'm unable to print wirelessly from my MacBook Pro (Catalina 10.15.7) through an AirPort Express (2nd gen) that's connected to my Epson Stylus Pro 3880 printer via USB. My MacBook seems to "see" the printer just fine! For example, Printers & Scanners > Epson Printer > Options & Supplies > Supply Levels shows all the various ink levels. But when I send a test page to the printer it sits in the print queue for a while, and then after about 5 minutes it disappears from the queue, without printing. While it's in the queue, it shows a status of "Printing - Connected to a printer." A document from, say, MS Word, just sits in the queue but doesn't print.
Previously, I was able to print to my Epson printer via USB from my AirPort Express, from a Windows 10 machine (that's now dead). Now I'm trying the same approach for the first time with my MacBook Pro, and it's not working.
Things I've tried:
- If I connect my MacBook Pro directly to the printer via the same USB cable, it prints just fine. I believe this rules out any issues with either the Epson print drivers or the USB cable.
- I tried Printers & Scanners > Right-click on the printer > Reset Printing System. And then re-adding the Epson printer (and a wireless HP printer as well).
- I tried resetting my AirPort Extreme (via AirPort Utility) and reconfiguring it. I used "Network Mode: Join a wireless network." (Which is how I had it set when I was printing just fine from my old Windows machine.)
- I wouldn't think it should matter, but I tried connecting my MacBook Pro via an Ethernet cable to the same router that the AirPort Express is (wirelessly) connected to. (Vs. using the MacBook wirelessly, as I usually do.)
Any ideas/suggestions?
Many thanks -- Steve