Drum unit Prism DR-421CL for Brother, CMYK set 4x (approx. 30,000 pages)

Prism DR-421CL drum unit set for Brother printers is a compatible four-colour imaging drum replacement designed to restore and maintain print quality in colour laser devices. This CMYK set includes four separate drums that transfer toner onto paper, and the combined expected yield is approximately 30,000 pages. The drums are intended for routine maintenance cycles in offices and print environments where consistent image density, accurate colour reproduction and minimal streaking are required.

Advantages

The drum unit set delivers consistent image transfer across all four colours to help maintain uniform print density and reduce common artefacts such as banding and streaks. As a complete CMYK set, it enables simultaneous replacement of all drums to ensure balanced colour output and predictable maintenance intervals. The compatible design is intended for straightforward installation and regular service routines, helping to extend the usable life of toner cartridges and optimise overall printing performance.

Suitable for

• Small and medium office environments performing regular colour printing
• Departments producing marketing materials, reports and colour documents
• Environments aiming to restore print quality after prolonged use or heavy print volumes
• Maintenance schedules that prefer replacing all colour drums at once for colour balance

Key specifications

• Configuration: Four-colour set (Cyan, Magenta, Yellow, Black)
• Function: Imaging drums for toner transfer
• Estimated combined yield: Approximately 30,000 pages total
• Compatibility: Designed for use with compatible Brother colour laser printers
• Intended use: Routine maintenance and print quality restoration

How to use

Turn off the printer and follow the manufacturer instructions for accessing the drum unit compartment. Remove existing drums according to the printer manual and install each new drum from the Prism DR-421CL set in the corresponding colour slot. Ensure each drum is seated properly and any protective covers are removed before closing the compartment. After installation, run a printer test page or colour calibration routine if available to verify correct seating and colour balance.

Usage recommendations

For reliable results, replace all four colour drums at the same time to maintain balanced colour reproduction. Use alongside compatible toner cartridges and follow scheduled maintenance intervals specified by the printer manufacturer to minimise downtime and preserve print quality.