Drum
The cylindrical component that applies toner to paper during the printing and copying process.
Detailed Explanation
The drum is the central mechanism in laser printing and copying. Typically made of aluminum with photoconductive layers, the drum receives an electrostatic charge pattern corresponding to the document image. Toner particles with opposite charge adhere to the charged areas of the drum, which then transfers the toner to paper. The fuser unit then bonds the toner permanently. Drums are consumables requiring periodic replacement - typically every 50,000-100,000 pages depending on the model. Drum condition significantly affects print quality, with worn drums producing faded, streaked, or spotty output.
Examples
- Typical drum life: 50,000-100,000 pages
- Drum replacement cost: $100-500
- Signs of worn drum: Fading, streaks, spots
Related Terms
Toner
Fine powder used in laser printers and copiers to create text and images on paper.
Fuser Unit
A heated component that bonds toner to paper using heat and pressure during the printing process.
Consumables
Replaceable supplies required for copier operation, including toner, paper, drums, developer, and staples.
Quick Info
Category
Hardware
Also Known As