Konica Minolta TNP42 STD Toner for the Bizhub 4020 Part Number: A6WN01W
Konica Minolta TNP40 UAR Black Toner for bizhub 4020 Part Number: A6WN01F
Amazon.com: Toner Cartridges Made in USA Bizhub 4020 Toner Cartridge. Replacement for use in Konica Minolta Bizhub 4020 Printers. TNP42 A6WN01F A6WN01W TNP-40 : Office Products
Amazon.com: XNINJA Compatible Toner Cartridge Replacement for Konica Minolta TNP40 A6WN01F, High Yield Work with Bizhub 4020 Printer 2Pack : Office Products