window.print() printing grayscale microsoft office document imaging

Hi.I use windows.print and i have set the header of a gridview to a grayscale image (with css).When i see it on the page it looks ok.When i print it using microsoft office document imaging the grayscale header look only white.
I just wanted to ask if that is a problem with microsoft office document imaging because i currently don't have or cannot find a regular printer to test.
Thanks.

Hmm.Changed to mdi colors but still no grayscale.Getting worried now..