What is printer drum unit
- 26 Feb, 2021
The drum unit is an essential part of any laser printer that transfers toner to the surface of the paper. Without it, any printout would be impossible. How it's working? The surface of the drum is covered with a photosensitive material. The drum is positively or negatively charged and therefore attracts toner particles. The pressure and temperature that occurs causes the toner to stick to the sheet of paper.
An example of a drum unit:
Compatible Brother DR1050 Drum Unit
There are two types of drums: those that are permanently built into the printer or those that are a replaceable part. When it comes to the quality or speed of printing, there is no difference between them. The only difference is the method of their replacement - for example, a laser printer with a fixed component may generate higher operating costs, associated with the replacement of the entire module, not just its part.
The electrographic roller (photosensitive layer) is the part of the drum unit that is consumed.
After using your laser printer for a while, you will definitely need to replace the printer drum.
How do you know that the drum unit is worn out, not the toner cartridge?
The reproduction of small parts deteriorates (for example, outlines)
- Printing becomes imprecise
- Print sharpness deteriorates
- Dirt and smudges in print
However, when the printer toner is used up, we will observe:
- Faded colors
- A small amount of powder is left in the toner cartridge
Check out our compatible drum units: