- Power up the printer, install cartridges
- Settings -> Wi-Fi -> Setup-Wizard to connect printer to your network
- Settings -> Wi-Fi -> TCP/IP, note IP address (mine is 192.168.1.8)
- check if printer is reachable on the network: ping 192.168.1.8
- create new user "lp" in group "lp": sudo useradd -s /bin/false -g lp lp
- install driver from AUR: yay brother-dcpj4120dw
- install CUPS, enable, start:
- sudo pacman -S cups
- sudo systemctl enable org.cups.cupsd.service
- sudo systemctl start org.cups.cupsd.service
- open localhost:631 in webbrowser
- Administration -> Add Printer
- (to authenticate, use username 'root' and your root password)
- "Internet Printing Protocol (IPP)"
- put "ipp://192.168.1.8:631/ipp/print" into Connection field (using the correct IP)
- fill in "Name" field
- Make:"Brother", Model:"Brother DCP-J4120DW CUPS (en)"
- click "Add Printer"
- set default options and click "Set Default Options"
- Maintainance -> Print test page
- install sane: sudo pacman -S sane
- add printer IP to file '/etc/sane.d/net.conf'
- install brscan4: yay brscan4
- install brscan-skey: yay brscan-skey
- add scanner: sudo brsaneconfig4 -a name='brother' model='DCP-J4120DW' ip=192.168.1.8
- restart sane: sudo systemctl restart saned.socket
- check if scanner is recognised: scanimage --list-devices
- scan a test page: scanimage --device 'brother4:net1;dev0' > /tmp/test.pnm
- optionally install a frontend, for example: yay gscan2pdf