Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "dgattarino" <dgattarino@...> 
wrote:
>
> I am asking this question to all the people using 3MK with QTR,
> expecially with the 3.5pl Epson printers (like Robert Brake). 
> 
> Here is the question.
> Did you ever compared DMAX obtained from 3MK with that obtained with
> one black cartridge only (using the same ink, of course)?
> The rational behind the question is as follow. When you use an ink
> limit lower or equal to 50 with QTR and more than one ink channel
> (like you do with 3MK) the head uses the smallest 3.5 pl droplets and
> it deploys those droplets in many more dots, because of the dithering
> with thre channels combined. On the other side, when using one channel
> only, the 100% black is obtained using the largest droplets the
> printing head is capable of, with the ink being deployed on 1/3 of the
> points. Therefore, at least in theory, 3MK might be able to induce a
> larger inkload on the paper and, potentially, a better DMax.
> Do you 3MK users experience such effect?
> 

Hello Daniela, 

Back when I tried BO printing with a 220 I didn't have a spectro.  The dMax results I got 
with 3 and 4 mk on a 220  with PAHP205 were I believe close to what I get from the UT-
3D I normally use in the 220: in the neighborhood of 1.60.  I'm away from home for a 
while so can't check it.

Have you found any more info on how or if QTR takes advantage of the variable droplet 
size in the newer printers.  For me it was just a theory but it might provide some great 
advantages in different inksets.  Might be a question to ask in the QTR forum.