How can I delete a printer from CUPS?

My local CUPS server is confused about the name of the printer I use. It has two names: hpext and hpext@vm-cups. I can never predict which one is going to work, and if I use the wrong one, jobs just sit in its queue indefinitely.

There are no printers listed in /etc/cupsd/cupsd.conf; instead I have the line

BrowsePoll cups.eecs.tufts.edu

This server lists only hpext and not hpext@vm-cups.
I'm thinking that somehow my local server is confused, and if I can delete the printer from its memory, all will be well. But nowhere in the documentation can I find a command to delete a printer, and the DELETE PRINTER button on the stupid web interface has no effect.

What can I do?

lpadmin helps you to manage cups' printers

Try

man lpadmin

I believe what you need is

lpadmin -x

1. On web, enter http://localhost:631/printers/
2. Click on printer to be deleted.
3. Select Delete Printer in Administration drop-down list.
4. Confirm Delete Printer by clicking on it.

The other way around this would be to turn off automatic browsing of Network Printers and just add the one printer you want manually. I think the reason the Delete button "has no effect" is that CUPS is getting a broadcast/notification that a "new" printer is available on the network.

Addition: If you don't want to lose those printers you already have, add them to your local CUPS instead of relying on broadcast.