Changing toner and drum on Konica Minolta Bizhub 4700P or 4000P - YouTube
Amazon.com: RIUT Compatible Black Toner Cartridge for Konica Minolta TNP77 Replacement, Work for Bizhub 4020i 5020i Printer IUP37 Drum Unit : Office Products
Buy Konica Minolta ACEY02D IUP37 Imaging Unit, 50k pages, Black at Tonerprice.com
Amazon.com: Toner Konica Bizhub 4020 1-tnp40 Standard Black Toner : Office Products
Konica Minolta bizhub 4020i Black Toner Cartridge, Genuine (G4376)