I'm using Application Xtender here at work and trying to get the pages to scan front and back. I select duplex and the front page scans perfectly fine, but the back of the page either shows up hardly visable or not at all. I then tried to use the Canon Software (CapturePefect 3.0) but when i select duplex in that program it doesnt even show up like it scanned the back page. Any ideas?
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Re: Duplex- Back of page not clear
Clean the glass with Isopropyl alcohol. Set proper Contrast level. If the level is not okay, you should get atleast a dark/very light image. If there is no image at all reinstall driver. Run Scandisk on the Comp
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Sometimes using technical jargon makes it harder for people to understand each other (this applies to both askers and answerers).
I always advise askers to use normal language as much as possible and answerers to do the same and where jargon is unavoidable, to explain as they go along.
Please post again to clarify what you mean by "..a duplex to pdf..", in normal language not in technical jargon.
A PDF is not a real, physical document. It is a digital document on a computer or a webpage created in PDF format.
A Duplex document is a real document, printed on both sides of each sheet of paper.
If you are trying to scan a multiple page Duplex Document using the Sheet Feeder of your scanner, the ink on the reverse side may be getting caught up in, affecting and/or staining one of the rollers in the Sheet Feeder.
The bottom roller in most non-industrial Scanner Sheet Feeders expects to touch only the plain reverse side of a sheet of paper as it is passed through and turned over to rest on the Platten (scanning surface) of the scanner ready to be scanned.
Multifunction printers with built in scanners and sheet feeders and duplex printing capability are designed in a way that makes them more forgiving of dealing with duplex printed paper.
Duplex printing printed in a laser printer is less likely to cause a problem as long as it is allowed to dry thoroughly. Inkjet printing that is allowed to drry thoroughly should also be okay.
If the scanning is being attempted very soon after printing, then the wetness of the printing may be the problem.
Sheet Feeders that handle duplex printed sheets invariably become stained and need periodic cleaning.
If the document is not too long, you may have to scan it manually, page-by-page.
If the document exists as a PDF somewhere on your computer or on the internet, then it is unclear why you would need to scan it. This is why your question is puzzling.
Post a further comment, if this answer does not help you solve the problem.
What scanning software are you using? In Adobe Acrobat Professional 9, you can set up different scan profiles, including duplex scanning. The sheet feeder holds up to 50 pages; you just tell the software to make all pages one pdf.
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.
Scan in portrait mode only. Of course this takes more time as compared to Landscape mode. The top module 'reads' left to right as we see it and the botom module 'reads' right to left, if you look from top. So if you scan in landscape mode and rotate, the back side is rotated by another 90 degrees and hence you see it upside down. If you are using PDF file and have Adobe Acrobat, you can specifically rotate odd or even pages.
S. Mohan, Chennai, India
First check if the front side (i.e top) scans properly in the simplex mode. Try different contrast levels for better clarity. In the setting menu select appropriate contrast for both fron and back, then you should get good outputs. Even after all this if the front page gives dark output, may be the LEDs are not glowing due to lose contact. Try in color to check LEDs.
S. Mohan, Chennai, India