device for Deskjet-F2100-series: hp:/usb/Deskjet_F2100_series?serial=CN7CK4T2NP04TK
device for HP-LaserJet-1300: socket://192.168.160.1:9100
device for hp-LaserJet-1320-series: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1G08790
device for HP-LaserJet-4MP: usb://HP/LaserJet%204MP
device for Laser: ///dev/null
device for PDF: cups-pdf:/