There is a mark or protusion on one of the rollers.this seems to be causing a line when copying from the ADF. I have cleaned the glass and rollers.

try this fix, even though its a different model printer, same kind of build

Open the Top Feeder Cover
Clean the Roller with lint free cloth.
Lift the Roller a bit up and you will find a glass strip underneath the rollers
Clean the glass strip with cloth and close the feeder
Try scanning or copying. it should work

Regards,
Ron

You don't say what kind of printer you have.
So, I will generalize my answer.
The reason for the line using the ADF and no line with the flatbed is that the paper is moving when using the ADF. So, a piece of dirt, dust or whatever on the ADF glass will cause a line because the paper is moving over a mark on the glass. The copy made on the flat bed glass doesn't move, so no line.
Anyways, clean the thin piece of glass that should be to the left of the big flat bed glass. That will fix your problem

There are two scan modes when copies are made.When you make copies through ADF you originals go past small **** glass located to the left of the main exposure glass.Any small mark on this **** glass( correction fluid mark,ink mark,small scratch,dust particle and so on)will show as a line on your copy.So to get rid of these vertical lines on your copies you need to clean this small exposure glass.

If you open the adf there is a small strip of glass on the left hand side next to the large glass. If there is a even a tiny speck on that little strip of glass it will cause a line when using the adf. Just clean it with a little bit of alcohol.

check there are two locking claw for uper cover of adf one is broken check and replace if necessary

If you lift up the lid on your scanning device you will notice a glass strip about 1 inch thick and then the large area of glass used for flatbed scanning. The 1 inch strip is used for ADF scanning. Because your papper is moving across the glass strip, any dot, smudge or scratch will affect your scanning and cause verticial lines down the page. Sometimes the dot is not visible to the eye. Get some glass cleaner that has alcohol in it and thoroughly clean the glass strip and it should solve your problem. If it turns out to be a scratch on the glass then cleaning won't help.

Hi,

Over time the automatic document feeder (ADF) will get dirty, occasionally causing vertical black streaks or lines in scans and copies .

Manual cleaning of the ADF might be necessary. Follow the procedure below to manually clean the ADF .

You will need the following materials:

• Soft lint-free cloths
• Glass cleaner

if you look carefully on the left side of ADF ( top feeder ) there is an assembly which u can lift , there wud be a set of rollers if u lift that part there would be a glass strip . u are suppose to clean that strip .
While holding up the inside of the ADF, clean the glass in the location of the vertical streak with one of the cotton swabs. Try cleaning the glass first with a dry cotton swab. If that does not correct the problem, then moisten the swab with glass cleaner .
If the vertical lines or streaks still appear, go through the above cleaning process again, this time cleaning the entire surface of the ADF scanner glass.
and after this try the following steps as well .
CAUTION: Use only glass cleaner. Avoid abrasives, acetone, benzene, and carbon tetrachloride, all of which can damage the scanner glass.

I tried the other solutions listed here - and no luck. After cleaning the inside of the ADF, like the manual suggested - no change. How are you supposed to do that anyway? Deep cleaning the inside of the machine also has nothing to do with it.

I finally figured out why things that I copied with the ADF had lines/marks on them, but those placed directly on the platen (big glass) were fine. When you copy with the ADF, the copy is not being made from the large glass area. Rather, there is a thin glass area right next to it.

Turns out, there were a couple of smudges (goo) on that thin piece of glass which were creating long vertical lines down every sheet. Cleaned the glass - problem solved!

Gosh, I hope this helps someone else save some time, and frustration.

I tried the other solutions listed her - and no luck. After cleaning the ADF rollers, like the manual suggested - no change.

I finally figured out why things that I coped with the ADF had lines/marks on them, but those placed directly on the platen (glass) were fine. When you copy with the ADF, the copy is not being made from the large glass area. Rather, there is a thin glass area right next to it.

Turns out, there were a couple of smudges (goo) on that thin piece of glass which were creating long vertical lines down every sheet. Cleaned the glass - problem solved!

Gosh, I hope this helps someone else save some time, and frustration.