Sustainably maintain printer ink supply with the black CS730/735/CX730 Return Program Toner Cartridge by Lexmark. This return cartridge is designed for use with select Lexmark laser color printers and has a page yield of 22,000. Enjoy higher print and image quality with Unison Toner. Lexmark's Return Cartridge program saves costs and refills cartridges for a sustainable ink supply solution.