Question about Canon DR-9080C Path-Through Scanner

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Documents scanned as 256 grey scale/TIFF show up as black pages.

I am trying to scan several documents through our Canon DR9080 scanner. They include test and images and we are trying to use 256 grey scale as a TIFF image. When scanned using a TIFF compression the pages appear completly black when view in any program other than Capture Perfect 3.0. When I remove the compression (which makes the file way too big), the scanned pages appear fine. Please help

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Re: Documents scanned as 256 grey scale/TIFF show up as...

Grey as you know is different shades of black. Uncompressed TIF can store this information. Compressed TIFF is not designed for this. Compressed TIFF is for blck & white only. Try JPG option. JPG can compress Color & Grey. For pure black & white chose TIFF compression.

S. Mohan, Chennai , India

Posted on Dec 11, 2007

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I have installed scanner and disc but cannot find how to use it.I found the test box and that works but now how do I scan?thanks

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Canon dr9080 scans front page as all black.

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

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Here's a Microsoft article on scanning documents, including scanning multiple documents info one file.

[Scan a document -]

I hope this helps.



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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)

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