Lexmark T640, T642 and T644 supplies are designed for the highest quality output, performance and easy installation, from the first page to the last. Lexmark T640, T642 and T644 supplies are not compatible with other Lexmark Printers. For use with Lexmark T640, T640n, T640dn, T640dtn, T642, T642n, T642tn, T642dtn and T644, T644n, T644tn, T644dtn printers.

Yield: Up to 30,000 pages, based on an average of 3 pages per job and approximately 5% coverage per page. Yields may vary based on customer usage. True: Accurate technology. Genuine quality. Environmental focus. It's our nature. Image: Crisp print. Professional documents. Great Impressions. Project your character. Always: Dependable. Page after page. Year after year. Count on Lexmark

Make a Professional Impression Choose Genuine Lexmark Supplies for Genuine Lexmark Results

The natural evolution of the Unison Print System.

The Unison Corporate cartridge life cycle, guided by the principles of zero waste and the circular economy, occurs in the EU.

Corporate Cartridges

Driven by our commitment to corporate social responsibility and guided by the principles of zero waste and the circular economy, Lexmark’s A4 CS/CX and MS/MX Corporate Cartridges further advance the sustainability innovations delivered by the Unison toner print system. The Corporate cartridges are manufactured in the EU. This ensures consistent product availability, minimises supply chain environmental impact and maintains production within the local economy.

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.

Unison™ Toner

Essential to Lexmark print system performance, Unison™ 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.

When using the original Lexmark cartridges, you can count on great results in printing anything you want. The first and the main reason for that is technology. Lexmark owns the primary technology for its toner formulation inside the printer cartridge. The Lexmark\'s name guarantees the original quality and many efforts expended by Lexmark engineers provides a high level of satisfaction for the most demanding user of Lexmark toner cartridge.

When using the original Lexmark cartridges, you can count on great results in printing anything you want. The first and the main reason for that is technology. Lexmark owns the primary technology for its toner formulation inside the printer cartridge. The Lexmark's name guarantees the original quality and many efforts expended by Lexmark engineers provides a high level of satisfaction for the most demanding user of Lexmark toner cartridge.

Unison™ Toner
Essential to Lexmark print system performance, Unison™ 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.


High Yield
Maximise your savings and enjoy premium quality with Genuine Lexmark cartridges. High Yield cartridges offer a lower cost per page and contain more pages than Standard Yield cartridges do. Perfect for high 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.


Lexmark Cartridge Collection Programme
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 Programme Cartridges
Lexmark Return Programme cartridges are patented print cartridges sold at a discount in exchange for the customer’s agreement to the license requirement that the cartridges will be used only once and returned only to Lexmark for remanufacturing and/or recycling. The Return Programme cartridges are licensed for single use only and are designed to stop working after the delivery of a fixed amount of toner. A variable amount of toner will remain in the cartridge when replacement is required. In addition, the cartridge is designed to automatically update the memory in your printer to protect against the introduction of counterfeit and/or unauthorised third-party cartridges.

The natural evolution of the Unison Print System.
The Unison Corporate cartridge life cycle, guided by the principles of zero waste and the circular economy, occurs in the EU.

Corporate Cartridges
Driven by our commitment to corporate social responsibility and guided by the principles of zero waste and the circular economy, Lexmark’s A4 CS/CX and MS/MX Corporate Cartridges further advance the sustainability innovations delivered by the Unison toner print system. The Corporate cartridges are manufactured in the EU. This ensures consistent product availability, minimises supply chain environmental impact and maintains production within the local economy.

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.

Unison™ Toner
Essential to Lexmark print system performance, Unison™ 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.

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.

High Yield
Maximise your savings and enjoy premium quality with Genuine Lexmark cartridges. High Yield cartridges offer a lower cost per page and contain more pages than Standard Yield cartridges do. Perfect for high volume printing.

Lexmark Return Program Cartridges
Lexmark Return Program cartridges are patented print cartridges sold at a discount in exchange for the customer’s agreement to the license requirement that the cartridges will be used only once and returned only to Lexmark for remanufacturing and/or recycling. The Return Program cartridges are licensed for single use only and are designed to stop working after the delivery of a fixed amount of toner. A variable amount of toner will remain in the cartridge when replacement is required. In addition, the cartridge is designed to automatically update the memory in your printer to protect against the introduction of counterfeit and/or unauthorised third-party cartridges. If the customer does not accept these terms, replacement cartridges sold without these terms are available through www.lexmark.com.