4 x Toner Chip for Konica Minolta Magicolor 1600, 1650, 1680, 1690 MF Refill | eBay
Amazon.com: KONICA MINOLTA MAGICOLOR 1690MF Black Original Toner (2,500 Yield)
Amazon.com: Compatible Toner Cartridge Set for Konica Minolta MagiColor 1690MF. (A0V301F, A0V30HF, A0V30CF, A0V306F) 4 Color Set (Black, Cyan, Yellow, Magenta) by eToner Brand. High Yield : Office Products
Amazon.com: SuppliesMAX Compatible Replacement for Konica Minolta Magicolor 1600W/1650EN/1680MF/1690MF Black High Yield Toner Cartridge (2500 Page Yield) (A0V301H) : Office Products