I have a DCP-7040 Brother Laser printer. I am getting a lot of black lines when i print. I have tried cleaning the head of drum but that did nothing.
Two likely possibilities:
1. The drum is scratched by particles caught under the drum cleaning blade. Every copier or printer that has a drum leaves a little bit of toner on the drum that didn't get transferred to the paper. A soft plastic blade scrapes off that excess. If a chunk of fused toner or something gets caught under it, it can scrape a groove around the drum, resulting in a black line. Take a close look at the drum for scratches matching the lines you get. The cure is a new drum unit.
2. The fuser roller is scratched. Open up the back of the printer. The fuser is the assembly with labels warning about how hot it is. The final stage of the print process is to press the page between those two hot rollers, melting the toner into the paper. The hot roller is coated with Teflon to prevent pulling toner off the page and laying it back down where it doesn't belong, but like the drum, it can be scratched. You might be able to look for scratches on the hot roller with the help of a strong flashlight and magnifier. If it's scratched, you need a new hot roller or a complete new fuser.
Let us know what you find.
Apr 21, 2010 |
Brother DCP-7040 Laser Printer