Digital BW, The Print

Hello All,

Seems that there can be differences in K3 production batches.  In the
midst of working up an image and making test prints (2400) I had to
replace three inks: MK, LK and LM.  The next print had a magenta tinge
that wasn't there before, so the new LM must have been stronger.  

I was using 6h/-6v on Aurora Art.  Changing it to 5h/-6v brought it
back close to the previous color.  By "close" I mean that I couldn't
get an exact match to the previous print (5h was not quite enough but
4h was too much).  So the first point here is that ink differences can
be finer in gradation than the system allows us to compensate for.

I think these differences are to be expected.  I have found
differences among Eboni batches, and differences in tone, contrast and
density among different paper batches.  So the second point is that
these ABW settings may have to be revised from time to time - they
aren't carved in stone.

I think the greater lesson from all this is that even though we are
working with computers and digitized images we can't expect that a
print we make today will look exactly one we made a year ago.  This is
not a new thought but it doesn't hurt to mention it now and then.

Regards,
Clayton


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