56F Black Return Toner Cartridge, 6K, MS421/521/622, MX421/522/622

Consistently outstanding image quality. Long-life system reliability. Superior sustainability. Innovative shake-free print system.

Unisonâ„¢ Toner

Essential to Lexmark print system performance, Unisonâ„¢ Toner's unique formulation consistently delivers outstanding image quality, ensures long-life print system reliability and promotes superior sustainability -- all in an innovative shake-free print system.

Lexmark Cartridge Collection Program

Going green has never been easier. Recycle all your used Lexmark supplies by letting us take care of the details. It’s simple, smart and always free.

Lexmark Return Program Cartridges

Lexmark Return Program cartridges are print cartridges sold at a discount in exchange for the customer's agreement that the cartridges will be used only once and returned only to Lexmark for remanufacturing or recycling. These single-use only cartridges will stop working after reaching end of the rated life established by Lexmark (a variable amount of toner may remain when replacement is required). These cartridges may also automatically update the printer memory to protect the printer from counterfeit and unauthorized products. Supplies without this single-use term are available at www.lexmark.com.

Standard Yield

Keep up-front costs low and quality high with Genuine Lexmark cartridges. Standard Yield cartridges offer a lower purchase price and contain fewer pages than High Yield cartridges do. Perfect for low volume printing.

Best Together

Genuine Lexmark supplies are engineered to work Best Together with your Lexmark printer, delivering excellent print quality from the first page to the last.

All information is subject to change without notice. Lexmark is not liable for any errors or omissions.