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Thick Black Line in Middle of Printed Document!

Printer= Canons PC-3000 Series/Fax-L400

Problem= When ever i print a document or scan a document i am getting a A THICK BLACK LINE in the middle of the page.

what do i do?!

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  • 226 Answers

Your question might best be answered at the website below

http://www.canon.co.uk/Support/index.asp

They have technical support plus drivers and other odds and ends concerning your equipment

Posted on Feb 23, 2008

  • Ravel Lively
    Ravel Lively Feb 23, 2008

    But I would bet it has something to do with your toner drum

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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.

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I am going on the presumption that you are getting this thick black line when printing from your computer. It can be a couple of things but firstly remove the toner/drum unit from the printer.
Check that the blue tag at the end of the top end of the drum unit ( used for cleaning the corona wire or drum unit & slides from 1 side to the other. ), is in the correct left correct position. If it is in the middle then that is what is causing this mark. It should be on the side of the drum unit where the arrows match.
If the blue slider is not in the middle then have a look at the drum & see if there is a black mark around it. If there is then you will need to replace the drum unit.
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The control panel LCD also provides menus to operate the copy and fax modes independently of a PC. One nice touch: the LCD displays small and large type on the same screen, allowing more information about a print job to show at one time. b.gif 21262659-2-200-dt2.gif
The flash card reader under the control panel means you don't need a PC to print photos.

The MP730, while easy to operate, lacks some of the advanced features you might find on separate printers or faxes. For example, the MP730 can't collate copy jobs. To make more than one collated copy of a multipage document, you have to place the document in the ADF several times. Nor can the MP730 sync fax numbers entered by hand or accessed from within the Windows Address Book (Canon doesn't provide its own fax/address-book software), so you may end up duplicating efforts. Nor does Canon's software create group dials from your address book on your PC or provide a cover sheet. Finally, the MP730 can't forward faxes to another number or hold a fax to send when nighttime low rates kick in, which other multifunctions do.

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Installing the MP730 software is slow but idiot-proof: You just pop in the CD and follow instructions, which require restarting your PC several times. Canon bundles the MP730 with ScanSoft's OmniPage SE, a lite version of the best optical-character recognition software on the market, and NewSoft's Presto PageManager 6.0, one of the best document-management databases available.
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