All of the laser printers are made by assembling different components that simultaneously work together to roll out a permanent copy. Some of the common components in a laser printer are rollers, fuser, drum unit, toner cartridge and others. Most of the printer users have a general idea of the different components of the printer apart from the drum unit. Brother is one of the foremost manufacturers of the printers that had utilized a separate drum unit in the early models of the printers. The DR420 model laser printer is one such printer that is mostly renowned among the offices and commercial complexes due to its easy and efficient operations. So, we will only discuss the functioning, application, and troubleshooting of the drum unit in this blog.
Drum Unit: An Essential Components for Laser Printers
Drum unit is an important component of the Brother printers which attracts the powdered toner due to opposite electrical polarities. Basically, a drum unit gets an impression of an image from the laser and transfers it over the paper for making the final prints. A Brother drum is coated with selenium that is a non-metallic photo-voltaic element with excellent photo-conductive properties.
Working of Brother Drum Unit
The Brother drum unit in DR420 model of laser printer basically receives an electrically positive charge through the corona wire. Further, the laser traces the impression of the printed text or image over the surface of rotating Brother drum unit. This basically converts the charge of the traced image to negative that ensure sticking of positively charged toner powder over the surface of the drum. The excess toner over the brother drum is cleaned by the blade to print the best image.
Later on, the image created over the Brother drum unit of DR420 model transfers over the printing medium i.e. paper. After that, the paper passes through the fuser unit to ensure the permanent impression of toner. This is why printing media often comes to be warm without any signs of smudge.
Frequency of Brother Drum Replacement
Due to constant exposure to heat and dirty papers, the Brother unit of DR420 model degrades with the passage of time. Most of the times scratches and dents are some of the common signs of a damaged Brother drum unit. A faulty drum unit is often responsible for unwanted lines, blind spots or markings over the surface of the printing media during the printing process. So, it is always recommended to replace the Brother drum unit in DR420 model to ensure its consistent performance for smudge-free printing.
It was a complete manual about the Brother drum unit and its operations. If you are dealing with a damaged Brother drum unit in DR420 model of the printer, get it replaced by shopping from an online store. Visit https://www.printersupplies.com to order online or by calling Toll Free @ (800) 551-1943 whilst enjoying great savings.