I have tried to print via Bluetooth from my iMac to my new A618 compact photo printer and have failed, in the main as the driver wasn’t on my iMac.
It can be relatively simple as I found with the PhotoSmart 375 I had previously. This is one of the reasons I create the guides on my website so that when I need to install a new or an existing printer for a second time, I can remember how to do it, likewise by putting them online I can access the guides from anywhere and if required on a separate device (which is useful if you need to reboot or shut other applications down).
Checking my guide it is of course a driver issue, time to find the driver…
In the end I moved the photographs I wanted to print from the iMac to a USB stick and used the printer remotely instead.