macOS Big Sur AirPrint support for Samsung CLX-3300 broken(?)

Hello,

According to the user's guide (http://h10032.www1.hp.com/ctg/Manual/c05785035#G11.5424415) about AirPrint:

•CLX-330xW, CLX-330xFN, CLX-330xFW series only.

•Only AirPrint certified machines can use the Airprint feature. Check the box your machine came in for the AirPrint certified mark.

Do you have an exact/complete model, including a suffix?

The fact that the printer is detected and configured properly, and works with iPhones and iPads, indicates that it actually is an AirPrint printer.

Have you tried to reset the printing system?

Reset the Mac printing system to solve a problem - Apple Support

I assume that the printer is connected to a Wi-Fi router (the same network as for the iPhones and iPads), either wirelessly or through an Ethernet cable to one of the LAN ports, and that a USB cable is not connected to the printer .

The HP/Samsung CLX-3300 is not found in Apple's AirPrint list of supported devices. Other similar models that are:

AirPrint may detect the CLX-3300, but has no driver code to currently support it properly, and that likely explains your printing aberrations.

You may want to check whether there is a firmware upgrade. Also see pp. 262-264 in the above manual about the SyncThru Web Service.

Yes it is, and I wish you had mentioned the explicit model at the beginning instead of a CLX-3300. That six-year old firmware may play a role in how this device functions under Big Sur, even as listed with AirPrint support. I see no newer firmware offered by HP for the CLX-3305W model.