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Re: Canon PIXMA MP780 All-In-One InkJet Printer
Driver could be corrupt. Disconnect the printer or at least be sure it is turned off.
I'd do both and reinstall the CD software program that came with
the printer. When the software program asks you to connect the
printer to the USB port, do so and it should again work properly.
Hope this helps. Bud
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An automatic document feeder or ADF is a feature which takes several pages and feeds the paper one page at a time into a scanner or copier, allowing the user to scan, and thereby copy, print, or fax, multiple-page documents without having to manually replace each page.
The most common cause of blank (void) lines on a scanned document is from whiteout on the glass where the page is scanned when using the document feeder.
If there is a clear mylar sheet on the bottom of the document feeder, the whiteout may be there instead.
If there was dirt or a dark smudge on the glass (or mylar), it would show up as a black line, but whiteout is white, and shows up as a void (blank) line.
Your document feed is separate from your received and report prints so that's why your reports are printing ok and the document feeder jams. When you open up the doc feeder and look inside the machine you will see a roller and above it on the cover that opens you will see a rubber pad. Clean both the roller and pad (in fact anything in there that is rubber) with a rubber cleaner, alcohol, or even soap and water on a cloth without it been dripping wet. You will probablt find that they are very dirty. The roller feeds the document in so that needs to be clean and the pad helps to keep all the other docs from feeding in at the same time and that should be very clean so it produces good friction.
When you load the document feeder, simply place all of the sheets, up to I believe 25 sheets at a time in the document feeder. The doc feeder, if working correctly will load them one at a time and then exit them to the receiving shelf or tray on your printer.
If you do not have a document feeder, or must use the manual scan function for some reason, there is also a FAX multiple pages function from the sub menu.
It could have something to do with the automatic document feeder. There could be something in there that is blocking the paper from feeding in there correctly. It could be the feed tires or the belt as well in the document feeder.
It should be looked at by a technician in your area in case there are some parts that need to be replaced.
Our problem is not solved. It was suggested the feeder needed cleaning or wasn't working. The feeder works as we make copies of documents. If one is scanning can you feed the document or can you only scan one page at a time by placing it on the window?