Question about Office Equipment & Supplies

1 Answer

Very crisp vertical grey line appears (glass clean)

MFC 7840 - very crisp vertical grey line appears when scanning, but not when copying; glass cleaned

Posted by on

  • adi May 11, 2010

    did you clean both sets of glasses? there is 1 used when using the ADF, and the big glass when opening up the cover and inserting the paper on the glass

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

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.

Posted on Aug 18, 2009

  • rakornbl Sep 20, 2010

    When you scan using the document feeder the scanning is done by the glass strip. There is likely a speck of dirt on the underside of the glass strip that is causing the black line to appear. If you examine the strip carefully you will probably find it. I have the same problem and have not found a procedure for removing the glass.

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Brother MFC-7820N Printer--vertical lines


You need to clean the scanner glass. Also known as the strip glass. It is a 1 inch wide strip of glass that runs from the front to the back. Your documents pass over this glass when they are scanned. Some of the wax crayon probably smeared off onto the glass and now when you scan the scanner sees these marks as stationary and thus records them as solid lines. Just look into the scanner section where your documents are fed in or depending on model, some are just to the left of the large original glass.
Good Luck and thank you for using Fixya.

Feb 25, 2010 | Brother MFC-7820N Printer

1 Answer

Lexmark 5075 - vertical line on copies or scans only


Clean all glass with 70% isopropal alcohol on the scanner. If the line is perfectly straight and crisp. There a spec on the glass probally causing the line.

Feb 21, 2010 | Lexmark X9575 InkJet Printer

1 Answer

I have lines in the fax quality of my MFC 7840 N


Fax out or received copy ? Clean the scanner glass.

Dec 10, 2009 | Brother Office Equipment & Supplies

2 Answers

When i use the document feeder, a vertical line appears on the page for scans / copies


You need to clean the glass. There must a dirt sticking on to the glass.
S. Mohan

Nov 05, 2009 | Brother MFC-9440CN Laser Printer

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

5 Answers

Vertical line appears in scans using the ADF, but not with copies


happened to me after i fed a page with not-too-hard whiteout on it. the feeder makes the page run through a different piece of glass and i just had to clean it.

Aug 18, 2009 | Brother MFC 7840W Printer

3 Answers

Vertical black line in scan document not in copies through document feeder


Lift the lid and to the left of the main glass is a smaller glass; that is what scans during the feeding process. Make sure that it is completely clean; even a speck of dust can cause a line to appear. I took a lens wipe and cleaned mine and my line was gone.

Jun 01, 2009 | Brother MFC-7820N All-In-One Laser Printer

2 Answers

Scanner leaves three vertical lines on scanned page


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…
RojoSho

Sep 29, 2008 | Brother MFC-7820N Laser Printer

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

Not finding what you are looking for?

Open Questions:

Office Equipment & Supplies Logo

Related Topics:

1,185 people viewed this question

Ask a Question

Usually answered in minutes!

Top Office Equipment & Supplies Experts

jasbo
jasbo

Level 3 Expert

2239 Answers

Ekse

Level 3 Expert

13434 Answers

Marvin
Marvin

Level 3 Expert

85160 Answers

Are you an Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...