There is a 3/8" horizontal black line on anything I scan/copy from the platen. No problems when scanning/copying from the document feeder. The Black line consistently appears 2 3/8" down from the top of the page. The AOI printer is 4.5 years old and this problem has just started. The printer works perfectly, producing good quality prints from the computer or copies from the document reader. Any suggestions?

When you use the flatbed the copy is perfect because the ccd sensor is under the glass cover and obviously is free form dust/ dirt.
On the other hand if you use the feeder the ccd sensor is located in between the roller assembly (not sure exactly for this model).
This means that the page is scanned by the ccd in the feeder, any dirt on the ccd will appear as a black line. I assume that you are feeding papers from the side and not from the top that is why you get a horizontal line.

A quick test to see if the ccd sensor is dirty is to feed the paper from the top side to the feeder. If you get a vertical line it is a proof that your ccd sensor needs to be cleaned.
The worst case is that the sensor in the feeder assembly has a tiny spot that is damaged and it is causing the black line.
So , first try the test, then open the feeder assembly, locate the ccd and clean it. Hope that this helps.

Probably there is nothing wrong with that scanner, just open and clean document feder with alcohol or glass cleaner.

Check your flat bed and Document feeder scanning glass need to be clean, if any dot or dust in scanning glass of document feeder it will appear a line, check this points first
1- Check printouts from computer or FAX if it is clean problem in scanning section
2- Check using Copying a blank paper using only Flatbed if it prints without any line its problem from document feeder Scanning glass
So solution is clean the Document feeder scanning glass using wet cloth, note careful about wet cloth switch off the machine and clean it

Hello mike,
You may have a fairly easy problem to fix, and that's good thing ! If the lines only appear when you use the document feeder then we can handle this. Please place a document on the platen glass and make a copy. If the copy looks good then we need to clean your "scan" glass. The scan glass is the small glass located to the left of the large platen glass. It's about 3/4" by 14",and will only cause problems when you use the automatic doc feeder.If it gets dirty then thin lines will show up. If indeed this is the problem then I have a test u can use that will help you Take a plain piece of paper. Mentally divide it into 4 squares and then simply write the numbers 1,2,3,4 on each quadrant. At the top edge of your newly formed test document place an arrow pointing away from the body of the paper, and it needs to point "UP".. Now draw an arrow on the test document that points to the left "lead " edge. Put your newly constructed test target in the document feeder and make a copy of it. Now, you KNOW how you placed the test document, so lets look at the copy. If you have lines only thru the document feeder, then look at the copy you made and notice where the lines are. Ok, now you know where the lines show up on the copy, so lets take your "test" document and compare them side by side.Once you have made this comparison, and can see where the lines show up, take the ORIGINAL test document and place it IMAGE UP (1,2,3,4) on the glass. This will point out exactly where the dirt is. By looking at the copy that has lines, and where they show up on the page, you can use the test page that is laying face up on the glass and compare the 2. BOOM !! You can look towards the small scan glass and find the dirt that is causing the lines. With your copier, IF you place a document on the glass then the scanner moves to "scan" the document. But if you use the document feeder, the scanner stays in one spot and the motion of the document moving ACROSS the scanner and is scanned like a bar code. If there is dirt on the scan glass then a line occurs instead of a "blob" as you would see if you used the platen glass.I hope this all makes sense (I tend to ramble) and I hope it helps you. You of course could have far more complex problems. But your description of the problem sounded like my remedy/idea might be just what you need. Take care and good luck. if I helped you please let "fixya" know. SPINAL

On what operation are you receiving the black line in your paper?

This problem usually appears when you try to scan or copy using your ADF (automatic document feeder).
To remove this black line in your paper, clean the ADF platen glass in your printer and do as well in the flatbed scanner glass. This ADF platen glass can be found right below where the documents in the ADF goes through. Its a glass about 1 inch in with and beside the flatbed scanner glass (the one where your documents is lay down for copying and scanning. Dried ink or paper residue sticked in the glass can cause this line in the paper. Clean it with a a clothe and spray some windex on it.

Good luck!

Documents scanned/copied from the document feeder pass over a thin glass area where scanning occurs. Clean this area if sent faxes, copies or scans have black or white vertical lines.

1. Lift the document cover to expose the platen glass.
   
   
2. Wipe the ADF scan area (C) with a clean, soft, lint-free cloth moistened with water.
   
   
   
   
3. Then wipe with a clean, soft, dry, lint-free cloth making sure there are no residues left, especially on the platen glass.
   
   
4. Close the document cover and make a copy of a text document to confirm the black line has disappeared.

Are you using the automatic document feeder (ADF) when copying/ scanning? If so, clean the area on the left side of the platen glass -- that is where the original document is read. There is probably some dirt or other foreign material that is blocking the scanner and causing lines.

Have you tried cleaning the document feeders Scan Glass? (small glass under doc feeder ~ 1" by 9") Most times there is dirt spot on this glass, causing a shadow on scans and copies.
Try copying from the large glass by lifting doc feeder / platen cover and manually placing original. If no line copying or scanning manually from large glass, then small scan glass is deffenitely the culprit. Hope this helps.

I'm pretty sure you might have solved this problem already, but this might help others.

Make sure that the platen glass is clean near the right side of the machine, where the document is scanned when going through the document scanner. Remember, when placing a document on the glass to copy it that way, you would place it on the glass on the left side of the machine. When scanning through the ADF, the scanning unit itself moves to the right side of glass and scans the document as it moves through.

We had the same issue and found out that there was a little spec of dirt on the glass. After cleaning it, the problem was solved.

As a tech I've never seen that happen. from the doc feeder only Yes, not both the feeder and the glass but not show up when you print from the computer ?????????

For sure there is a dot or something on the small strip of glass, only when you do it from the feeder.
the reason is that the document is moving and the dot on the "small" strip of glass now looks like a line to the copier.

You said it also does it when you lay it down on the glass !!??(platen) that should of indicated the drum has a ring around it, but since it doesn't come out on the PC copy then the glass must have a line on it.