Question about Canon DR-9080C Path-Through Scanner

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DR-9080C BackgrounfColour Dropping Out

Occasionally while scanning in colour to uncompressef TIF format,the background colour partially drops out to give a sort of banding effect. I have cleaned the shading plates, lens, sensors. I've even tried putting a plain white piece of paper through to see if that re-sets the white balance. My only thought now is that the actual scanning element might be on its way out. But when it does happen, i have tried swapping it with an alternate 9080C and the same efffect is still there. I have also tried 3 different versions of the captureperfect software and the PC it is running on is of pretty good spec (dual core, 2 gig ram). Any ideas???

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Color scanning is a big technology. There are concepts like Hue and intensity, refer to wikipedia for explanation. There is something called source light (your monitor for example) and reflected light (your picture that is being scanned). After scanning properly, say you view on a monitor where the Brightness & Contrast are not proper, you will see the image poorly! To test the scanning scan absolute white and check the output. It should read the values 255,255,255 for RGB (Red, Green & Blue). If the values are 255,255,255 but still the image does not appear white on the monitor, it is monitor setting that is wrong. If the output is not 255,255,255 then CANON service personnel only can help. Any good imaging software will display the RGB values.

CANON uses LED light source and they have fairly long life as compare to scanner bulbs. It is okay if you use a powerful system, but it has limited role as the scanner does all the jobs and it only sends the data to the Comp. May further processing is better withe high performance CPU and large RAM.

Posted on Nov 08, 2008


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