A workgroup laser printer is producing pages that are completely covered with loose black toner that rubs off on the user's hands. Which printer component is MOST likely failing?
Fuser assembly
Pickup roller
Toner cartridge
Transfer roller/corona
The fuser assembly uses heat and pressure to melt the toner particles into the paper fibers. If the fuser does not reach or maintain the correct temperature (or its pressure roller is damaged), the toner will not bond to the paper and will appear as loose black dust or smears. Replacing the fuser or adjusting the media type settings in the printer is the typical fix. A bad toner cartridge or transfer roller can cause other defects, but they will not leave large areas of unfused toner that rubs off.
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