Brother MFC 7420 All-In-One Laser Printer "print black lines down" Questions

...black line down center I have a Brother HL5250DN printer and after 10 pages it starts printing a thick black line down the center of the pages. But later when I start again, it starts clean then does ...

...print mode. There is a BOLD Black line down the paper on copy mode. Ok in print mode. Prints fine. Have replaced the drum and still get the black line. What's up? There is most likely something on ...

BLACK PRINT HORIZONTAL WHITE LINES SEEN AND BLACK IS NOT DARK Try cleaning the black printer heads several times in a row, at least 5 times then print a black document with best quality setting. Press

...black lines down, close to each others on the printed page. When I copy a page from the scanner glass, or print an MS Word document, the printed pages are normal. I received a fax recently and the ...

lines about 3.75" apart. I tried pulling out the drum, turning it over, and cleaning the corona wire several times with the blue tab, leaving it on the arrow to the left, but to no avail. I don't

black lines and splotches down the left side of my paper. This happens whether I'm scanning or printing from my PC. When I looked at my drum, it appears a My Brother MFC-7420 Printer always prints

...paper very old canon PC 6RE is printing half inch black line down right side of page tthis is really old 25 years plus. replaced the drun cartridge which also contains the toner good luck canon sr ...

...print quality is OK for black and three colors. Press 2 (NO) for black or three colors with the problem. The display will then show START CLEANING? 1.YES 2. NO. Press 1 (YES) and the MFC will start ...

...black horizontal lines down the right side of the paper - what is wrong? I am not sure if the drum needs replacing or if it is a fault, but every page has black horizontal lines all down the ...

...black line down the center of the fax the problem is in your scanner head not the print engine, there may be a an obstruction in front of the imaging head. If the line is on your print when printing ...