Genuine Kyocera TK572-K Black Toner FS-5400DN. Rated for an astounding 16,000 pages at 5% coverage with a cost per page for b&w of .007 (7/10 of 1 cent) which is lower than any network class mono laser other than Kyocera's mono printers.
You may order on-line or by calling 1.800.473.7909
