Question about Canon CanoScan 9950F Flatbed Scanner

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Background has a bluish tint instead of white

Plain paper that is copied in color mode or black and white has a background tint to it. It also tints photographs to a bluish color. Unable to find out how to remove. This happened about a year ago and we solved it. It has returned, but don't remember our solution

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The lens , glass inside your scanner is dirty with dust you need to clean this up and calibrate once again cheers

Posted on Nov 26, 2008

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How to have white background on small documents


All areas outside of the document will be black only. I don't know how you were getting white background.
If you want white background around your scanned image, a) stick the check (in this example) onto a white paper and scan the whole sheet. Ensure double detection is off. b) You can also do this in software, by cropping a larger area outside the scanned image.

There are many options to view the scanned image like Actual size or Fit or Fit vertically or Fit width. The same image will appear different in each case.

S. Mohan, India

Jun 27, 2013 | Canon DR-5010C Scanner

1 Answer

I HAVE A BLACK LINE ON ALL MY SCANNED COPIES , EVEN ON PLAIN COPIERPAPER. PLEASE ADVISE


There are two possibilities: 1) The scanner sensor has a dead pixel, or 2) There is a particle covering a pixel of the linear scanning sensor array.

If you are up to it, open the scanner carefully and clean all the optics while you are at it. So the back of the glass cover, the mirrors (carefully!) and then the sensor. You may want to use a duster spray can (I think Office Max or Depot carry those) and dust of the sensor and the mirrors instead of using a soft cloth. If the scanner uses first surface mirrors, then one can very easily ruin the mirror coatings and it will be full of scratches from the dust particles when you wipe them! If they use regular mirrors (where the reflective coating is behind the glass) then it is safe to use a cloth.

If that does not get rid of the black line, then you have a dead pixel in your scanner sensor and you need to buy a new one.

There may be a way to tell whether it is a dead pixel or a dirt particle on the sensor. If you open your scanned image (or plain white paper image), magnify the image and see if the line is exactly one pixel wide - that would point to a dead pixel. If it is more than one pixel wide and the scanner did not do an interpolation then it is a dirty sensor. To make sure, scan with the maximum intrinsic resolution (chek the scanner's manual for that), so you don't interpolate between pixels. I am still not sure if that also applies to color scanners, they have a color filter over the linear detector array. It may depend on how the pixels for the color coding are arranged. But then I would expect an 'off-color' line, not a black line. If it is a black line and if it is more than one pixel wide, I am sure that a dust particle is the reason for it.

Good luck, Stephan

Mar 25, 2011 | Xerox DOCUMATE 510 Flatbed Scanner

1 Answer

Color balance is bad


Have you tried cleaning the slide holders/adapters?

Jun 11, 2009 | Nikon Super Coolscan 4000 ED Film Scanner...

1 Answer

Why do my copies come out so light?


I found that I had to adjust the settings or my copies were almost illegible. Instead of copying at greyscale or black & white, try setting for color copies (even if using a black & white laser printer) and 600 dpi. It takes a few seconds longer to scan, but you get very clear copies that way.

May 01, 2009 | Canon CanoScan LiDE 70 Flatbed Scanner

1 Answer

Faulty scanned images


Pls check your color Scan settings. Generally there will be some color difference between the original and scanned Image because, the original is 'reflected light' whereas, the scanned image is a 'source light' on the monitor. The monitor setting can also affect the color output. S. Mohan

Jan 28, 2009 | HP ScanJet 2400 Flatbed Scanner

1 Answer

Hp scanjet2300c scans have a yellow tint and black patches.


The best way to check if the scanner is okay or not is by installing on another computer. First try B&W, then try color. IF it works may be your OS or driver (of the old comp) is corrupted.
S. Mohan

Dec 22, 2008 | HP ScanJet 2300C Flatbed Scanner

1 Answer

Gray backround


Does your scanner software give the option to choose different modes...grayscale, color, black & white?? This sounds like it's scanning in grayscale....if you can change it to black & white, the background should remain white.

Jan 24, 2008 | Epson Perfection 1670 Flatbed Scanner

1 Answer

Canoscan 8400F bad scan results


Get you a HP scanner

Dec 14, 2007 | Scanners

1 Answer

Grayblue Background on scans


A color scan will give real output as it is. If the background is grey, the output will also be grey. If you select 256 Color output, there may be small change in color, as compared to the original. If you select grey output, all colors will be converted to Grey. If these files are converted to PDF, it will be same, except in ODF format.

If you select B&W you can save the file in TIFF format. Unlike grey or color, each pixel can be either black or white only. To scan in black and white you must select right brightness. By doing os you can eliminate background (technically noise) and capture foreground(data)

S. Mohan

Oct 19, 2007 | Canon DR-1210C Scanner

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