Black Toner Cartridge Compatible with Samsung ML-1640 (N6050)
Amazon.com: SuperInk Compatible Toner Cartridge Replacement for Samsung MLT-D108S MLTD108S to use with ML-2240 ML-1640 (Black, 1-Pack) : Office Products
Buy Compatible for MLTD108S Toner Cartridge, 1500 pages, Black at Tonerprice.com