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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.
Many people ask this same question over and over again. "I get black thin line (s) when using document feeder. If my original is on the platen glass copy is OK."
Well, in most copiers, be it Xerox or Canon or Sharp there is same principle in use. When document is moving it is exposured (copied) by a steady non-moving exposure lamp. If there is any dirt or even a dust particle on the narrow platen glass it will print out as a line.
Most people don't understand this principle and they say "I 've cleaned the platen glass".OK, they have cleaned the BIG glass, but the glass is the narrow one next to the big one. Very often there is glue or white correction lacquer on the platen which of course adheres more dirt.
You may use even the strongest solvents to get dirt off the glass. Remember, it is made of glass and won't get hurt even if you use thinner or nail polish remover.
This tip applies also on fax machines. The receiving end may call back and say "your fax has a lot of lines across the copy".
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
Sounds as if the drum needs to be replaced if it does this on copies and prints. If it just happens on copy when using the document feeder then try cleaning the narrow piece of glass that is located just to the left of the large piece of glass.
There are a number of things that can cause this problem, below are a few things you can try.
1. Remove the process unit out as if you were going to remove a jam. There is a green piece of plastic used to clean the main charge unit. Slide it to the left then back to the right. Make sure it is seated all the way to the right in it's home position or it can cause black lines.
2. If you have a document feeder on the copier is the line only when using the document feeder?
- Determine if it is by making a copy from the glass.
- If it is only when making a copy from the document feeder then clean the small **** glass just to the left of the large glass. This glass is used only when making a copy from the document feeder.
3. If you wipe your hand across the copy and the toner wipes off then fixing unit should be replaced.
Clean the scanner strip glass. This is the thinner strip of glass that runs from front to back right next to the large glass. This glass is only used when scanning/copying using the document feeder. The line you are seeing is because something has become stuck to the glass so when the documents are fed over the strip of glass, the scanner reads the stationary spot of debris as a solid line. Clean the glass very well using a cloth and some glass cleaner. I have seen something get under the glass as well but this is very rare. Rest assured tho that the line is being caused by something on this strip of glass.
Good Luck and Thank You for using Fixya.
Hello sir; Is the stripes allway in same place and you use document feeder to copy, then you have to clean up a piece stripe glass on the plateform, otherwise ,you have to change drum cleaning blade or drum cartridge.
A line down the copy can come from a dirty document scanner lens.
Usually white out or wet ink will smudge on the document scanner. Opening the document cover check the scanner for a dirty glass. Some document feeders have the white roller on top of the small glass window. They have delicate plastice retainers that hold the roller on both ends. Extra care needs to be taken if this roller is removed.
Clean the roller and the glass with wet towel. Shine a flashlight on the glass to see if there are anymore black marks on it.
Use the finger-nail to run across the glass and make sure no debris is on it. Even a spot can make a line on the copy.
Also, a bad fuser roll can cause a black line on the copy. A defective drum unit can cause a line on the copy as well.
If all else fails place a Xerox service call for this problem.