Kyocera TK340 black laser toner kit for use in FS-2020D and FS-2020DN printers. Approximate page yield 12,000. OEM: 1T02J00EU0. You can enjoy continued high-quality printing and reliability with your Kyocera FS-2020 printer by installing a genuine Kyocera Black Laser Toner Kit (TK-340). Order a replacement toner cartridge when you see the "Toner Low" message on your printer's display. Then, when you see the "Replace Toner" error message, replace the old cartridge immediately to continue printing. This standard yield cartridge is packed with enough black toner to print 12,000 pages.