Digital BW, The Print

Hello Neil,

>I'm making small 4.75x3.25 BO prints tonight on PR, BO with 
>Ebony.  Mostly in out of focus areas I see  I'm getting fine 
>lines running vertically in the direction the print head moves.  


There are two kinds of banding, or two categories.  One is generally
referred to as microbanding, and is caused by clogged nozzles, air in
carts or CIS tubes, that sort of thing.  The other is called dither
banding, which seems to be caused by the dither pattern of the
driver, where at certain tonal densities it lays down dots in rows
instead of overlapping patterns.  You'll know it's dither banding if
it only appears in certain zones (most common in the darker zones,
around II or III) and not others.  Microbanding usually occurs across
the entire print.

It sounds like you are describing dither banding.  Does it go away on
larger prints from the identical images, or was that a general
statement about other images?

Regards,
Clayton


Info on black and white digital printing at    
http://www.cjcom.net/digiprnarts.htm