General description For the best possible quality and flawless operation from your Kyocera FS-2100 laser printer, install a genuine Kyocera Black Laser Toner Kit (TK-3100). This standard yield cartridge is packed with enough black toner to print 12,500 pages. Usage Make sure you order a spare toner cartridge when you see the Toner is Running Out error message on your FS-210. Then, when you see the message Replace the Toner, you can quickly remove the old toner and restart your printing quickly.