I have a problem that I just cant seem to correct and I was wondering if anyone had some tips/advice. When scanning covers that have the color red on them, It always comes out looking very drab and not very vibrant. I have tried using various tools in photoshop and adjusting the scanner controls to correct the color, but I cannot get the red to look right. It just has an awful flat almost greyish tone. Its not very bright and looks more maroon than red. Can someone please help me?
Thanks

Could be that your scanner has problems with the color red, try printing out a scan. If it looks fine then maybe your monitor has a problem with red.

Another problem I have is that when I print out a cover that is mostly black. It looks very hazy. Is there some way to adjust this so the blacks are darker without changing the other colors?

Did you try using auto levels? Sometimes works. Blacks on the snappers are VERY bad, scan poorly and need tons of help and cleanup. Takes time.