Welcome to the Copystar FSC-5100 product page. Here you can find information and pricing for your Copystar TK542M Genuine CopyStar Toner Cartridge. Easy online ordering of your TK542K Premium Compatible Toner Cartridge, CS-TK542Y, CS-TK542K, can be completed from this page. Tonerprice.com backs all of our cartridges with our exclusive warranty. As always, we provide free ground shipping on orders over $75 within the contiguous United States from 5 warehouses nationwide.