How do I adjust the brightness and contrast of a scan on ImageClass MF644Cdw?

[Aknowlton]

Scans from the document feeder come out ok but when I scan from the Platen Glass, they come out darker due to to much reflected light.  I shouldn't be able to read the back side of the document or the page behind it. This issue has nothing to do with print settings as documents that are not scanned from the glass print flawlessly.   How do I adjust the brightness level of the scan and save that setting?  

[Hector]

Hello Aknowlton,

You can adjust the scan settings using the MFscan utility that installs onto the computer. We would be happy to assist further with the issue. To provide some feedback or some troubleshooting steps, we would need some additional information. If you could reply to this message with the information below, we can provide some assistance.

1. What version of the Mac or Windows operating system are you using on your computer?
2. Are you scanning using document settings or photo settings?

[DV_Belgium]

I have the same iassue: in what menu of the scan utility do i set the brightness/contrast. i cannot find it