Question about Brother MFC 4350 All-In-One Laser Printer

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Receiver end of faxes shows vertical black line. I changed drum and toner also cleaned glass scanner. I do not have a glass flatbed scanner only an automatic feeder.

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The cause of this problem is usually a dirty scanning glass (there might be ink or white out on the glass). Check the glass really closely or the cause could be dirty optics or a bad CCD board. There are mirrors underneath the scanning glass. Dirty optics can cause lines when faxing or copying. If you can not access these mirrors, they would have to cleaned by a technician.

Posted on Sep 08, 2009

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1 Answer

Scanner leaving black streaks


There are two possible fixes.

Download the latest firmware update by CLICKING HERE

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.


May 01, 2012 | Lexmark International LEX90T9005 Inkjet...

1 Answer

Vertical Streak on my sent faxes


Open up the document feeder and clean the scanner glass. If the streak is larger than 1/4 " wide, you have a bad scanner block.

Apr 23, 2010 | Brother IntelliFAX 4100 Laser Fax

1 Answer

Black large vertical line on receivers end of fax


If you are sure that there is nothing on the scanner glass, the scanner itself could be bad and need replacing. The most common thing that causes this is some dried white-out correction fluid on the scanner glass.

Sep 09, 2009 | Computers & Internet

1 Answer

Outgoing faxes have large vertical black line on receivers end. I have replaced toner and drum. Incoming faxes are fine.


Stop! Does not need any parts...

If you do not use the automatic document feeder (ADF), you will see that the faxes are clean on the receiver's end.
(In other words, use the flatbed)

OK, now the fix:
1. open the scanner like you are going to use the flatbed glass.
2. On the far left part of the glass top, there is a "speck" or smear of dirt that you should be able to see.
3. Use eyeglass cleaner / wipe or other glass cleaner technique and clean the glass on the far left of the flatbed. ok, clean the whole glass while you are at it.
4. Your scanner (you didn't mention the brand or model number) may have a narrow slice of glass on the left of the flatbed... clean that, too.
5. Test it ... it should be ok now.

Hope this helps!






Sep 08, 2009 | Office Equipment & Supplies

1 Answer

Dark vertical lines


You have to clean the scanner.Open the dock feeder area,and make sure the scanner glass is clean sometimes the glass look clean but just a smaal dot on the glass can cause a line.Clean also the white area above the scanner.The white area above the scanner help for shading operation of the mchine.Make sure you clean with a sullotion that can remove ink but not damage plastic.

Feb 18, 2009 | Brother FAX-8070P Plain Paper Laser

2 Answers

The Black line on the paper when I scan and fax


try cleaning the grid on the drum unit and you might replace the drum

Dec 22, 2008 | Brother MFC-8220 Fax

1 Answer

Black vertical lines issues on Samsung multifunction fax SF


Black lines are usually a sign that you have toner on the laser slip glass which is usually situated above the drum unit, its just a little bit of glass if u give this a wipe and get toner on ur finger or rag then thats probably what wrong. If you don't I would look at your drum unit as it might not be cleaning correctly, which would mean getting a new one.
Hope you find this info helpful. Cheers

Dec 13, 2008 | Samsung SF-830 Plain Paper Laser Fax

1 Answer

White vertical line on received faxes


hi,

The upper glass is under the drum unit.

- Remove Toner and Drum Unit and you will see the glass. Try to clean it.

Bye.

Dec 02, 2008 | Panasonic KX-FL501 Plain Paper Laser Fax

2 Answers

Black line on faxes


Check carefully the glass, a very small point of ink or anything else can cause the black stripe. usually  it is that the problem. use windex to clean it. 

Apr 15, 2008 | Brother IntelliFAX 4750 Plain Paper Laser...

1 Answer

Copies here and recipients faxes: dark, lined


How long has the drum been in there?
try this:
1-take out toner, look and see if it is ok. do you see stripes on it?
2- look at the drum are there any black rings on it? ( you did not specify white or black lines)
3- where the glass is on the opposite side ( the part you lifted to clean the glass, look at it standing from the back. you will see a white metal plate with some springs in it if you touch it. this is the reference that the fax has if there is/are a black dot on it it will give you a black line clean carefully. if it is scratched use white out to cover and make white again.

For the darkness try making a copy in photo mode if it is still too dark change drum.

Dec 07, 2007 | Canon FAXPHONE B640 Plain Paper Bubblejet

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