Question about Brother MFC-7820N Laser Printer

1 Answer

Vertical lines when scanning

When I scan multiple pages through, I get a vertical line on the left side of each page. If I lay a page flat on the glass this doesn't happen. Does anyone have a suggestion on how to fix this?

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  • Anonymous Oct 30, 2008

    WHEN I USE THE SCANER IT PUTS A LINE ON THE PAPER OF THE COPY.IT ALSO PUTS THE SAME LINE ON THE PAPER AT THE OTHER END OF MY FAXES. PLEASE HELP ?



  • Anonymous Nov 19, 2008

    THANK YOU VERY MUCH! GOD BLESS YOU! I CALLED A SERVICE TECH IN MY AREA AND THEY WANTED TO CHARGE $150 TO FIX THIS ISSUE. BASICALLY WHAT A SINGLE SPRAY OF WINDEX TOOK CARE OF!
    KEEP HELPING EACH OTHER! I WILL DEFINITELY PASS THIS FORWARD! Thanks Again! HB


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1 Answer

Clean the glass. Not the full glass where you lay a page, but the thin strip of glass that the paper moves past when you use the ADF. There is probably a small dot of ink or dirt causing the lines.

Posted on Oct 22, 2008

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When I scan two-sided to pdf, the back page has a large black vertical streak down left side.


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The following is provided by courtesy of Lexmark:
Problem Vertical lines; Auto document feeder scan anomaly; ADF scanning problem; Scan issue; Scanner issue; Visible line; Streaks show on page; solid line down the page; Top to bottom line; Smudge runs down the page; Opaque line; Broken line; Bar all the way down the page Solution Overview

This article provides the self-diagnostic steps necessary to evaluate top-to-bottom streaks that appear when copying or scanning.

Important! This is seldom a scanner hardware failure.

The main reason for this anomaly is debris or marks on the scanner glass that is used for Auto document feeder (ADF) page scans.

Printed or Scanned Page Illustration

copyvertstreaks.jpg

Who should consider this article?

Any user of an MFP or All-In-One printer experiencing the following symptoms:

  • -Vertical lines only when using the Autodocument Feeder (ADF).
  • -Observed with any type of scan job (e-mail, ftp, solutions, fax).
  • -However, normal expected output when the page is scanned from the scanner flatbed.



ADF scan behavior

Think of it this way:

  • -The page is pulled from the ADF.
  • -The moving page slides across an ADF-designated portion of glass.
  • -The image sensor, which is located under the glass, reads and interprets the moving page's contents.
  • -Contamination on this ADF glass is seen by the image sensor for the entire length of the page.
  • -The image processor interprets the image sensor's repeated capture of this contamination as a vertical solid line.
  • -Any ADF scan function now exhibits a vertical line.



adfvertscanline.gif




Suggested Diagnosis and Fix




Step Action 1 Locate the portion of the glass designated for ADF scans.
HINT: The glass location differs by model. This area is often separate from the scanner flatbed. Please reference User's Guide for more information if you are having a difficult time locating this designated area.
2 Perform a visual inspection for any of the following recurring culprits:

  • -Clear adhesive tape
  • -Glue
  • -Ink pen
  • -Paper
  • -Marker
  • -White out
  • -Staples
  • -Environmental dust or dirt
HINT: Ink marks can be especially hard to see and almost translucent at first sight. However, the image sensor (CCD) registers them as a mark. 3 Use a clean, soft, moistened cloth to thoroughly clean and remove any marks or debris. 4 Inspect the underbelly or underside of the ADF for any marks or debris. 5 Perform another scan to see if cleaning the glass alleviated the issue. 6 Repeat the procedure if a vertical line still appears.
Remember! Printing and scanning from the scanner flatbed work fine.
7 This time, place an intentional mark on a blank sheet of paper and take note of its location. Now place that sheet of paper in the ADF and make a copy.
8 Evaluate the distance of the vertical line to the your mark. 9 Inspect that area of the glass for further debris or marks and clean as necessary.




Other Possibilities


If... Then... Vertical lines appear only when printing... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear when you lay the page on the flatbed... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear on ADF-fed printed copies, but they do not appear on scan-to-network [e-mail, FTP, folder (PC), solutions]... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support.


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I get vertical lines on scans and copies when


Hello,

Check out this page on our web site at:
http://www.ccl-la.com/dirty_scanner.htm This page shows you what to do to get rid of the lines on scans and copies.

I hope this helps, if so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com

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1 Answer

Vertical lines in copies and scanning


You need to clean small exposure glass located on the left of the main exposure glass.If this doesn't help,it can be a dust under the glass or on the mirrors that causing lines.

Oct 06, 2009 | Brother MFC 6490CW InkJet Printer

1 Answer

Very crisp vertical grey line appears (glass clean)


I have the exact same problem. It was there since I first bought the MFC-7840W.
Vertical line appears in scans using the automatic document feeder (ADF).
Vertical line does not appear when scanning single page (placing it directly on the glass -- i.e. not using the ADF).

Cleaning the glass strip for the ADF (or the white pressure bar overhead) does not solve the problem.
The problem does not occur with copies using the ADF (using the COPY button which is basically a scan and print). This would suggest that dust and dirt is not to blame because that would also appear on the copies.
But since I believe a copy is basically a scan plus print, they should be using the same electronics -- a hardware problem on the scan would likely appear on a copy also -- there is some difference between how they accomplish this.
It's definitely not a software issue since it occurs on all versions of Windows and Mac OS X (and multiple computers). It also does not matter whether I "push" the scan to the computer by using the scan button on the MFC... or "pull" the scan from the MFC using the Brother Control Center software.

Aug 12, 2009 | Office Equipment & Supplies

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Vertical line appears on the faxed page sent to


This sounds like a dirty scanning glass in the adf feeder. clean the glass with a soft cloth. if this doesn't solve the problem, there might be dirty optics under the scanning glass.

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1 Answer

HP Laserjet3030 steaks/lines in flatbed photo scans.


Are printed pages clean?
If so, clean the narrow strip of glass on the left side of the main scan glass.
If printed pages are dirty as well, then probably a defective toner cartridge -replace

*please rate me:)

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Hello,

A dirty glass base can cause ‘spots’ or blemishes to appear on your final printout. Additionally, if you had some sort of opaque liquid that may have transferred on to the glass base from a previous operation. But the majority of the unwanted vertical lines are generally caused by either a dirty or damaged print roller or faulty LEDs in the Scanner Module.

To separate one from the other you have to check the following:

Do you only see the lines with a Scan operation?
Do your print jobs print fine without any unwanted lines?

If you only see the unwanted lines during a Scan operation, then most likely you have a fault/dirty/obstructed LED module.

If you see the unwanted lines with all print operations (Scan, Print and Copy), then you most likely have a worn out, damaged or dirty Print Roller.

Hope this helps…
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4 Answers

Print Problem - vertical lines


If the problem only occurs when using the document feeder, the problem is not usually caused by the drum. When using the document feeder, try to notice where the scanner (the light assembly under your scan glass)stops just before the paper is being fed. Some multifunction machines have a small piece of glass that is separate from the large scan glass and the scanner assembly stays parked underneith it as the original is being fed over it. Most likely there is something on the glass where the scanner parks as originals are being fed thru the feeder. When putting your original on the large scan glass to copy, the mark on the glass will only show as a spot, but will show as a vertical line thru the whole copy when using the feeder.

Feb 23, 2007 | Brother MFC-7820N Laser Printer

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