Image Drum Unit for compatible color multifunction printers. This replacement drum is designed to restore consistent color transfer and sharp detail in printed pages by taking over the photoconductive role inside the printer. It is a directfit replacement for the listed printer models and matching drumbased toner supplies. Key benefits Restores print quality: reduces streaking, smudging, and faded areas that appear when the drum is worn. Reliable image transfer: engineered to provide even toner distribution across the page for uniform color and detail. Easy maintenance: dropin replacement that fits the original drum slot and installs without special tools. Cost effective upkeep: allows continued use of existing toner supplies while resolving image quality issues caused by a worn drum. Compatibility and fit Compatible with HP Color MFP models: 178nw, 178nwg, 179fnw, 179fwg, 178, 179 Compatible with toner/drum codes: 120A W1120A and CLT406 406 Drum Designed to match the original drum form factor for correct alignment and reliable operation Function and construction Purpose: the drum unit receives toner from the cartridge and transfers the image to paper during printing Construction: finished photoconductive surface for consistent electrostatic transfer and precise image reproduction Performance focus: stable operation across typical print jobs for home, office, or small business use Practical use scenarios Routine maintenance: a worn drum to eliminate color banding and restore consistent print density for monthly or quarterly printer upkeep. Home office reports and presentations: maintain sharp color charts and graphics when producing clientfacing documents or classroom materials. Small business or classroom printing: address image defects caused by drum wear in moderatevolume printing environments, reducing waste and reprints. What to expect A direct replacement drum unit sized and shaped to fit the listed machines and drumcompatible toner supplies Improved image consistency after installation, with straightforward installation steps that match existing service procedures This replacement drum unit is intended for users who need a dependable, compatible solution to restore print quality and keep color multifunction printers operating correctly.