I found this by searching on the 2050c. I read this and it did not help much but I got to thinking the scanning was done by a narrow slit and my verical lines running the lengh the image had to be dirt on the slit.
I got some very good quality color printer paper not real heavy maybe even 20lb and ran about a hundred pages throught the scanner. Slowly the lines faded to white even at 800x.
I did take a slightly damp soft cloth and wipe the area where I thought the slit might be. We have 2 of these scanners and the other had a faint line too and while I was on a roll I ran pages through it.
Maybe this would work for you. In any event it almost has to be something on the scanning part.
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Re: problem with images
Make sure light does not shine directly on top of the scanner, if light goes in, you will still get lines... Also: Try aligning the paper on the corner where the arrows are, and close the feeder guides.
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its important to find out whether the \'lines\' are in scan direction/ or only through Radf or only from scan glass,
if the lines are only showing when documents are fed throught the Radf, then the problem lies with the document scan plate( left of the main glass platen (about 2" in width)) or with the scan plate blade cleaner
if the lines ONLY appear when copying from the Glass then the issue lies within the optics (probably nothing more than a clean will be needed)
another question would be to ask if the lines are solid (black line overprinting image) or if they are \'missing\' lines where the image has failed to copy, sometimes it can be hard to work out which side the fault lies,so try shaded greys as a copy original .
if the scan lines are appearing on both Radf and Glassplatten ,mode then the issue may be dirty optics/ccd sensor or it could e an indication of the ccd failing or image control pwb in error while interpreting the image file.
what to do
1) place a grey sheet of paper in the Radf and have the copier photocopy both sides of the original and print to single sided sheets ( so the printer turns the original over to complete the task)
observe the result.
2) have the copier photocopy directly from the platten glass- single sided.
observe the result.
ckeck to see if the error has appeared on both sets of prints ,
if the error has only appeared in the first set of prints then the issue may be a tiny DOT on the slit glass (left of platten) - a dot on this glass will indeed appear as a Line as the original is scanned across the glass.
Try scanning a few documents in full size mode (scannerrs maximum), If you observe a line in the same location in all images, you can conclude that there is either a scratch in the glass (due to stapler pins) or dirt stuck firmly. Try cleaning with Isopropyl alcohol. For absolute emergency, you can wet a cotton bud in after shave and clean the right spot, take care not to touch any other part other than the glass. If glass is scratched, you need to replace it. S. Mohan, Chennai, India
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.
these rear camers get the board that has the CCD chip on it come loose from the camera. take off the ADF cover, at the from of the rear camera you will see the board held on with 2 screws, there have probably come loose. you will need to tighten them up with the board in the right place to allow the image from the camera to be focused on this chip. it will take you a while to get it in the correct place, but once you have it correct, the image will be perfect again. let me know how you get on
If it doesnt have a line on it when you scan it and open up the document then it's not going to be a scanner issue, more then likely, it's going to be an issue with the toner of the printer you are using to print with. Check the drum on the toner and you'll probably see the line in question on the drum itself. You'll just have to push back the flap that covers the drum on the toner if this is a laser printer... hope this help's if it does, please mark as a FIXYA!!
We have the same problem where I work. We use a black texta and draw a line down the middle of the page. This gives the scanner a point to pick up apart from the minimal text at the top. However, this will only work if you are happy to have a line on your scanned document!