Black line through the middle of the document

What Scanning software are you using? If CapturePerfect, there is an option to detect double page. Once you select this, the scanner will STOP, if two pages are sucked in and the panel will display "d04" indicating double page. Also Wipe all the rollers with a well wrung damp cloth for every 2000 pages to remove paper dirt.
S. Mohan, Chennai, India

It seems that your scanner is conflicting with previously installed software. It is impossible to say whether it is Canon or Adobe. Reinstalling Acrobat or updating it may work as trying a different folder like Desktop instead of My Documents. One or more drivers are at fault. What system are you running? 2000, XP, Linux? Update your video rendering software too. Let me know so that I can help solve this issue. Just try as mentioned first.

Check your scanner software settings. It is probably set at duplex ever time you start to scan. That is why you get two pages for every pass, the front and the back. You must place the document in the feeder in a way that the front side of the document is page 2. You may want to flip it next time you scan. So the main question is why there is black line from top to bottom? That is because there is a piece of dirt stuck on the glass of the scanner. You see, this scanner actually does two scanning when a page runs through it: the front and the back in duplex mode. So there are two scanners in side the box. The front page scanner apparently is dirty and needs to be cleaned with clean cloth and lens cleaner.

Dear all
I have the same problem Please Help
Mark

Check the brightness setting. Try keeping at close to the maximum and scan. If it is still black, may be the lighting module or Scan module is affected. Check for any loose connections.
S. Mohan

It is dust on the glass, clean it thoroughly. You will find it at the same location for all drawings and may get faded for lower brightness!
S. Mohan

Please clean the glass with Isopropyl alcohol. Dont use solvents.
S. Mohan

The correct answer is to clean or replace the mylar sheet on the bottom of the adf

GO ON LINE AND TYPE INTHE FOLLING INFORMATION.

CANON DR 3080C SCANNER SERVICE MANAUL.

ONLINE TO CANON USA.COM

ROD

Try reinstalling the driver software. If the problem still persists, run scandisk or reinstall OS.

S. Mohan