Question about Canon CanoScan 8400F Flatbed Scanner

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Too much blue hue on one side

Every time I scan or copy a piece of paper, I get a strong blue hue on one half of the document. if I delete the hue entirely from the enhance menu, the entire document gets lightened too much though.

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  • phchu99 Sep 12, 2007

    attached is a sample

  • Lawrence 79 Feb 10, 2008

    Hi ...I have a similar problem....If I scan a white sheet of paper the result is the sheet of paper but all the white is a light blue hue. If I use a sheet ong glossy photo paper the result is much improved. Is thsi a bulb problem and if so how is it fixed. Is there any way of cabibrating the 8400F?
    regards Lawrence



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Bulb issue

Posted on Sep 20, 2007


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Only copy a half of the paper

Check the exposure lamp light.Open the document feder cover,verify the lamp light(press the cover contact manually),if the lamp is light to half side,remove the glass,pull the scanner assembly in the left position use the alufolio and transparent scotch for repair the damaged parts.Verify the lamp ground continuity use Ohm meter.

Mar 06, 2012 | Konica Minolta DiALTA Di200 Copier

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Black line 1 inch wide right side ,when copies are made and faxing

When the paper is fed through Automatic Document Feeder (ADF) is is scanned before copy or fax. The scanner is fixed type and is located just below the ADF.
The lines are due to dirty scanner mirror. The printer/ scanner design is based Sheet-Fed Scanner. Open/Lift the Control Panel (scanner top )(by pulling it up from front - the area from where the paper to scan comes out). Look out for the horizontal mirror and use a soft, damp, lint-free cloth to gently clean the scanner mirror, rollers etc. and enjoy clear scanning and copying!
Inspect for any tron pieces of paper dirt etc.DONT USE PAPER, CHEMICALS OR ANY ABRASIVE CLOTH as it may damage the parts.
Also note that your machine can scan an image only 8.15 inches wide, regardless of how wide the paper is.

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May 31, 2011 | Brother 5750E Fax

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The automatic document feeder keeps grabbing the paper on one side and therefore creasing the paper so that it does not go through

Lift up on the ADF roller cover and look for a piece of paper. Remove the blue guide bar and the end where the paper flips under. If you can't find paper put the blue bar back and close the ADF (automatic document fee) lid. Lift up the flatbed scanner cover and look at the far left side to see a piece of obstruction. Clear that and try making a copy.

Nov 19, 2009 | HP Scanjet 5590 Flatbed Scanner

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Hoow do I scan a paper from the Cannon MP210 to my laptop? I want to put college diplomas, drivers license and other documents onto my computer as a document so I may send them as an attachment to emails,...

First, may I suggest that you should never place those type of documents in electronic form. Document theft is very easy to accomplish and you will be sending very personal descriptive information out in the open. Don't do it!

That said, any document that uses a light or mild blue text will not copied correctly because of the properties of blue ink.

Drivers licence's are designed to "blotch" the image when it is printed.

Again, I strongly urge you to reconsider the placing these documents in electronic form.


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Can't work out how to use the multiscan? I press scan and it comes up with multiscan and I put the first piece of paper in but don't seem to get asked for any more sheets and it therefore just scans one...


Put the pages in the "multiscan" all at once, not just one sheet at a time. The Automatic Document Feeder (ADF) will feed one sheet of your document at a time untill all of the pages are scanned...
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Oct 26, 2009 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

Black line is present when copying document; not

This sounds as if you have some ink/contamination on the small scaning glass that sits to either the left or right of the main glass on the copier.(Depending on the model/make)As your original is scanned over this thin piece of glass the scanning device will see any spots and this will result in a black line down the page.Please clean the glass with a soft rag.

Oct 12, 2009 | Office Equipment & Supplies

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Lines on my copies

As the page you wish to copy goes through the document feeder, it passes the scanner as well as a white plastic band that the scanner "compares" the dark writing or data on the page to. If this white plastic band is not very clean, the scanner reads the dirt as if it is part of the image you are scanning. Try cleaning the band as thoroughly as possible, as well as the small piece of glass to the left of the larger glass on the flat bed scanner. Make another copy to test your results.

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May 07, 2009 | HP LaserJet M5025 MFP All-In-One Printer

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Line when coping from document feeder

If you lift the document feeder, you will see a narrow piece of glass on the left side. Originals are scanned across this when the feeder is used, so a small speck of dirt becomes a line when copying. clean the glass, and it should be good to go.

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1 Answer

HP Officejet 6300 All-in-one machine makes black streaks

The problem is that that there a small piece of glass that the doc feeder use's to scan the orginal. You will have to clean the small glass it's about a half of a inch piece and is normally under the doc feeder unit. It will either be to the right side of the main copy board glass or it is under the doc feed unit where the paper goes down through the feeder. It is mostly some white out on the glass, just clean with a dam cloth with water or windex..... Good Luck

Nov 15, 2008 | HP 190 Copier

2 Answers

Dark strip down center of page when coping from tray

There is a small strip of glass on the left side directly under the edge of the scanner, About a half an inch wide. It has something on it.
May be very hard to see, use a strong glass cleaner or some alcohol and a regular piece of paper to clean it with.

May 08, 2008 | Xerox Phaser 3200MFP/N Laser Printer

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