Digital BW, The Print

After a few iterations of the nozzle cleaning dance, I have what appear 
(even under 2X magnification) to be perfect check patterns, However, I 
still get microbands in BO printing. What's really odd is that the 
first 3-5% of the image is perfect, then the banding starts. Moreover, 
the good part of the image is a fixed percentage of the total image 
size, NOT a fixed number of pixels or inches (on a 5x7 it is about 
1/2", on a 3x5 it's about half that). In a full color print there is no 
banding apparent to the naked eye, but it is faint;y visible under 2x 
mag. I've tried OEM carts also. Now for the even stranger part - there 
is no banding visible in the black stripe when I print the MIS purge 
pattern, even on EEM with 1440 DPI!

I believe the green cast is a bad cart because the light blue toner ink 
is more cyan than I remember when I print the purge pattern.

Any ideas? It almost seems like a driver problem, but the only thing 
different is a newer version of OS X (10.3.4 versus 10.3.2? when I last 
printed with this printer).

Keith

On Jun 16, 2004, at 6:28 PM, nick_h_nugent wrote:

> Hi Keith,
>
> I think Paul may be correct in asking you if you haven't printed
> anything for a while. You most likely have to run one or two cleaning
> cycles even if you got good nozzle checks the first time, then print
> a half or full page of a purge pattern, then print the nozzle check
> again, and maybe one more clean cycle.
>
> I always print a pattern to make sure all nozzles are firing before
> starting my print jobs.
>
> -nick