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Black Line on Document

How do I correct a black line printing down the center of the copied page ?

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I have to clean the ADF scanning glass area (Brother MFC) after scanning or faxing only a few documents. It’s the worst I’ve ever seen.

Try to clean the drum unit of the printer as this might help you fix the black strips on the paper. Reference-https://www.askprob.com/why-is-brother-p...

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Hi,

If the streaks that are being produced only occur when using the Automatic Document Feeder (ADF) and not when making a copy via the platen glass, the issue is commonly due to small marks or debris on the scanning glass area that lines up underneath the ADF roller. Small smudges on the platen glass can cause "streaks" to be produced as every inch of the paper fed via the ADF passes over the area and is picked up by the scanner. The ADF roller is located on the left and underside of your lid. The scanning light sits in this area when using the ADF.

If it occurs when using the platen glass you will need to carefully and fully clean the glass in the scanning area. There can also be a strip of transparent plastic on which there can be a mark or smudge. Look for scratches, tiny spots and marks of any sort. You can use a soft lint free cloth either dry, or just very lightly moistened to clean the glass. and you may have to scrub (gently) to remove certain types of marks.

You may also wish to clean the underside of the lid.

NOTE: do not spray a cleaning solution onto the glass.

After cleaning the platen glass, run four to five blank/clean pages through to test it and see if the streaks still appear.

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My lines happen when using ADF in MFC-J6930DW

It is printing a vertical line on the right side of the paper and a horizontal line at the bottom of the page

I cannot find what u r telling me to clean

Hi. Your advice worked great for me with a hp office jet pro 6968. Was streaking only with doc feeder. Had to look deeply at the glass and had small specks causing this problem. Got rid of the flecks and works crystal clear now. Thank you!!

worked like a charm was a small piece of black smug on the glass once I knew where to look was no problem

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Block Image

Try wiping the glass marked with red with soft cloth and alcohol.

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Same problem. Followed the procedure outlined by Brother, cleaned the platen glass, white pressure pad, and window for document feed, no luck, so went to the drum, it had a black band all the way around so cleaned it, Ran the little tab back and forth across the wires and still had the problem. Only had a bad copy when using document feeder, so cleaned the platen glass and document feeder glass again and then discovered a panel on bottom of document feeder, opened it and found 3 gray feed rollers on left side. One was at exactly the same distance from edge where the unwanted lines appear so I cleaned it alcohol and that seems to have corrected the problem.

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if vertical line is on all printouts I guess the drum needs to be replaced by a not worn out one.

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Black marks or streaks can be printed on the paper by any printer. You can fix by below steps:

  1. Hold the OK button 3 times and print the Printer Settings page.If the quality of the Printer Settings page is not smeared or blurry or there are no smudges or dots, your Brother machine appears to be printing nicely.If the quality of the Printer Settings page does not appear smeared or is blurry but there are Brother Printer Black Smudges On Paper go to the next step.
  2. You need to review the Printer Settings and understand if the dots are spaced at specific intervals such as 1.5 inches or 3.7 inches or the dots are randomly spaced.
  3. Brother Printer Leaving Black Marks On Edge Of Paper are typically triggered by foreign particles inside the printer such as, paper particles, dried glue from envelopes or labels paper/ staple clips sticking to or damaging the surface of the drum. Toner builds up or sticks to such surfaces on the drum and creates the problem of Brother Printer Leaving Black Marks On Edge Of Paper on printed pages.
  4. For your drum unit, you need to do the following:
  5. Lift up the drum unit and pull it out of the machine by opening the front cover of your Brother Printer.
  6. Now, from the drum remove the toner cartridge by holding down the green lock lever placed on the side of the drum unit. This is done by lifting the toner out.
  7. Now, turn over the drum unit. Ensure appropriately that the white drum unit gear is on your left side.
  8. While looking at the surface of the drum roller, turn by handthe gear of the white drum unit toward you.
  9. Now, you need to look for any material or marks on the surface of the drum.  It makes it certain by turning the drum gear that you examine the entire drum surface.
  10. Now you need to clean the surface thoroughly to get rid of the Brother Printer Leaving Black Marks On Edge Of Paper while printing. Do the cleaning task of the roller by slowly wiping the full surface of the drum with a swab dipped in alcohol, such as a wipe or medical pad. You can do it with a cotton swab slightly moistened with isopropyl alcohol.  You must ensure that the alcohol gets completely evaporated or dried off the surface before moving further.  Also, make it a point to look thoroughly on the entire drum surface as there could be other areas on a drum that might need cleaning.
  11. Now, turn over the drum unit. Then, slowly slide the green tab on top of the drum unit from left to right a few times and clean the main corona wire contained within the drum unit. Now place the green tab back to its home position before putting back the drum unit assembly.

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