Digital BW, The Print

I don't know if I've used banding in the wrong context or what. But 
what I see is faint lines in the direction the printhead travels. 
Almost like it misses a last pass of ink on that line. It's not like 
bold blank stripes showing in the images. They're subtle but, at 
least to me, very noticable. Yes I've tried doing alignments for 
different papers, changing the thickness lever, etc. 

As far as interpolation artifacts, I don't know. None of these images 
that I've printed with the D100 have been up or downsized. Maybe 
cropped, but I was never concerned with getting a specific print 
size, because I was only looking at the quality. So prints from 
digicams for me having always been their native size or smaller (on 
the D100 I think it's 6.667x10.224@300). I've tried though too 
downsampling the images to 240ppi and 360ppi. At 240,300 and 360 the 
lines are there.
> 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.