Tente isto:
Faça o download do driver:
LBP 6230 Linux
Abra um terminal
Pressione Ctrl + Alt + T
Execute:
cd /home/user/Downloads
tar zxf Linux_UFRIILT_PrinterDriver_V120_uk_EN.tar.gz
cd /home/user/Downloads/Linux_UFRIILT_PrinterDriver_V120_uk_EN
sudo ./install.sh