Lexmark LEX55B100E Black Toner Cartridge MS431 MX431

Product Description

The LEXMARK LEX55B100E is a black laser toner cartridge engineered for use in Lexmark MS431 and MX431 laser printers. It uses Unison Toner technology, a proprietary formulation developed to deliver consistent image density and sharp text output across the full life of the cartridge. Unlike cartridges that require shaking to redistribute settled toner, the LEX55B100E is designed for shake-free operation from first page to last. This cartridge is a direct OEM supply item, appropriate for office environments where print quality and reliability across high-volume print cycles are operational requirements.

This cartridge is intended for use in Lexmark MS431 and MX431 series laser printers, covering both single-function and multifunction configurations within those product lines. It is suited to professional office, light production, and managed print service environments. Installation is handled by office technicians or end users, though fleet deployments are typically managed by IT or print service professionals responsible for supply chain and device uptime.

Key Features

• Shake-free toner formulation eliminates the need to redistribute toner during cartridge life
• Unison Toner technology for consistent black output and long-life system reliability
• OEM cartridge designed specifically for Lexmark MS431 and MX431 printers
• Single-unit packaging with a minimum order quantity of one
• Hazardous material classification: none

Compatibility

Designed for use in Lexmark MS431 and MX431 series laser printers as stated by the manufacturer.

Installation Notes

Toner cartridge installation should be performed with the printer powered off or in a ready state per the printer manufacturer guidelines. Remove the cartridge from its packaging carefully to avoid contact with the drum or toner outlet. Follow the printer's cartridge replacement sequence as outlined in the device service manual. Dispose of used cartridges in accordance with local regulations governing toner waste.