Digital BW, The Print

hello everyone. i want to thank all that responded to my clog busting post.
i got several very helpful replies and am now in the process of trying them
out. hopefully one of them will work soon!

i have a new problem now. it's a banding problem on my Photo 870, printing
grayscale images with the black ink only. not the typical microbanding from
clogged nozzles or misaligned print heads (i've had enough of those to
recognize them). no, this one is one i've never seen before. it is wide
banding that occurs only in the 1/4 tones and runs perpendicular to the
direction the print heads print. i've posted a scanned print of a 1/4 tone
patch that shows this phenomenon quite clearly (after a curves adjustment to
increase contrast for viewing purposes).

can anyone take a look and tell me what might be causing this? the jpeg is
posted at:

http://www.frankvena.com/banding.jpg

much appreciated. and thanks again for the help with the clog that ate
Vancouver!

Frank Vena

hi again, i have to re-post this request since i got no responses the 
first time around and am in desperate need of suggestions. thanks in 
advance for your insight to this problem.

Frank

--- In DigitalBlackandWhiteThePrint@y..., Frank Vena <frank@f...> 
wrote:

> i have a new problem now. it's a banding problem on my Photo 870, 
printing
> grayscale images with the black ink only. not the typical 
microbanding from
> clogged nozzles or misaligned print heads (i've had enough of those 
to
> recognize them). no, this one is one i've never seen before. it is 
wide
> banding that occurs only in the 1/4 tones and runs perpendicular to 
the
> direction the print heads print. i've posted a scanned print of a 
1/4 tone
> patch that shows this phenomenon quite clearly (after a curves 
adjustment to
> increase contrast for viewing purposes).
> 
> can anyone take a look and tell me what might be causing this? the 
jpeg is
> posted at:
> 
> http://www.frankvena.com/banding.jpg
> 
> much appreciated. and thanks again for the help with the clog that 
ate

> Vancouver!
> 
> Frank Vena