Digital BW, The Print

> He noticed on my images also that the image from the D100 had light banding
> while the scanned image exhibited no banding.  Mind you, the D100 image
> banding was very slight and I had not even noticed it, but when Matt
> suggested that, I did a little research and did indeed find it to be the
> case in most of my prints.

Banding?  That's different from a single line of difference.

If the banding is not apparent when examining the image on the screen,
it's the printer.  If the banding occurs only on digicam photos, it's
probably an artifact of interpolation.  Try upsampling or downsampling
to other resolutions and see if the bands change or disappear on
printing; if they do, this is the problem.