I’ve recently replaced the standard black inks on my 3880 with HD-PK and UHD-MK. Until this past weekend I had only attempted to make digital negs on it since installing the new inks, with no better success than previously. I think we have narrowed the source of that problem down to either the printer itself or to the Carbon inkset that I’m using. I know others are having good success with this printer and other K7 inksets. But this question is not about negatives, it’s about prints on paper.
A couple days ago I installed the HD K6 printer and removed the older non-HD K7 printer, since it is no longer applicable (I think, maybe). That’s when I noticed that the HD version is K6, not K7. None of the curve use shade 7 at all. I was used to this for PiezoDN curves, but it was a surprise for normal print curves. So I ask myself, is there any reason at all to use the normal HD K6 installation rather than the P2 installation since neither uses shade 7?
I decide to take a closer look at some of the curves. Since Moab Entrada Natural is the paper I keep in stock, I look at the HD K6 and P2 curves for that paper. Since they should be using the exact same inks in the exact same positions, I expect there to be no difference, but there is a slight difference, primarily in the black curve. (Note: I’m a beta-tester for the new driver so I’m looking at this with the associated tools, though I’m not yet using that for printing on paper.) The HD curve (UHD-MK) uses more K than the old K7 curve. What is weird is that the P2 K curve looks to be the same as the old K7 rather than the new HD-K6.
- Shouldn’t the K curve using UHD-MK in in a K6 configuration be the same for both P2 and standard HD-K6?
- In a K6 configuration, where shade 7 is not used (as is the case with all of the current HD curves) is there any reason not to use the P2 ink placement scheme?