Lexmark LEX51B1000 Unison Toner Black 2,500 Page-Yield toner cartridges (genuine brands)

Genuine Lexmark Unison Toner Cartridge

The Lexmark LEX51B1000 is an original black toner cartridge built for Lexmark laser printers. It uses Unison toner technology to deliver consistent image quality from the first page to the last. Designed for the MS317dn, MS417dn, MS517dn, MS617dn, MX317dn, MX417de, MX517de and MX617de models, it installs easily and supports the Lexmark Cartridge Collection Program.

2,500-Page Yield Measured to ISO/IEC 19752

Rated at 2,500 standard pages in one-sided simplex mode, the yield follows the ISO/IEC 19752 test methodology. That capacity suits regular office printing and small workgroup volumes. Heavy daily output will deplete the cartridge faster, so high-volume environments should plan for more frequent replacements.

Return-Program Cartridge Replaces Standard

This return-program cartridge replaces a standard single-use toner for the same printers. The jump is worth it when you want lower upfront cost and a managed recycling route through Lexmark. It is not for buyers who need a high-yield 51B1H00 cartridge or a non-return licence for refill or remanufacture.