Digital BW, The Print

Thanks Greg,

I love your trick to determine the maximum ink load. Makes absolute 
sense. Your statement on the combined ink loads confirms what I 
expected. I ran some further simulations in Excel. If you really want 
too keep the ink load to ~80% of the max, it will be a though job to 
get 4-5 jets firing simultanuously. Perhaps lower it to 3. This seems 
to counteract some info I read on Cone's website that the even the 
lightest inks contribute to the very dark gray levels. 

Joost



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Greg" 
<dfaprinting@...> wrote:
>
> Joost,
> 
> I can't give you a definitive amount on the ink limits, but I can
> offer a suggestion. Find the limit of the full black ink by watching
> for slight puddling and or printing a pattern with some 1 pixel 
spaced
> white lines surrounded by much larger areas of solid black. When the
> edges of those 1 pixel lines start to get fuzzy, you have too much
> ink. Now use this ink limit for all the other inks because it will 
be
> much harder to determine the limit for the lighter shades.
> 
> As far as mixing goes, you never want to go above the maximum 
combined
> that you set for the full black. With 5 gray inks, you should never
> need to go closer than about 75 or 80 percent of the total ink limit
> when you overlap the different gray inks. Depending on how much
> overlap you use, you may have at least 2 inks firing at all times.
> That's about all I can help with since I'm not completely up to 
speed
> with QTR.
>