How do they work?

Toner cartridges – How do they work?

When the laser printer receives a command from your computer it builds an image in the laser printer scanner’s memory. Once the image is completely built in the memory, the laser printer starts to lay the magnetic image on the drum unit using a laser light. The laser light puts a charge on the toner cartridge drum where it wants to attract toner of the laser printer. At the same time the paper is subject to a high voltage to produce a magnetic charge on the laser printers’ paper. The paper passes below the drum and attracts the toner on the drum thus “transferring the image” to the paper. As the toner cartridge drum continues around the drum blade wipes off the excess toner. The paper then passes through the fuser which melts the toner onto the page providing the finished output.