Hendrik:
...
> DeviceURI dnssd://Brother%20HL-3170CDW%20series._ipp._tcp.local/?uuid=e3248000-80ce-11db-8000-30055c5516df

From what I can see:
https://www.brother-usa.com/products/hl3170cdw

that printer supports BR-script which is a postscript clone.
Why not set it to BR-script mode on the front panel, run plain old
lpr and be done with it. And tell your programs to always output
postscript.

Regards,
/Karl Hammar