2PK TK-717 Black Toner Crtg Compatible for Kyocera-Mita NEC IT5050 TASKalfa 420i | eBay
Amazon.com: Kyocera 1T02GR0US0 Model TK-717 Black Toner Kit For use with Kyocera KM-3050, KM-4050, KM-5050, TASKalfa 420i and 520i A3 Monochrome Multifunctional Printers; Up to 34000 Pages Yield at 5% Coverage :
TK-725 Toner Kyocera TASKalfa 420i TASKalfa 520i
SuppliesMAX Compatible Replacement for Kyocera Mita KM-3050/4050/5050/TASkalfa 420i/520i Toner Cartridge (5/PK-34000 Page Yield) (TK-717/TK-715_5PK) - Newegg.com
Kyocera TASKalfa 420i pdf brochure - Copiers on Sale