QTR-Quadtone RIP

With my R1800 the PK ink on this paper looks as Black at 55 or 60% as it does at 100% on the Ink Sep Page.  This was printed at 2880 & uni-directional ... my density at 55% is 2.11 measured with an X-Rite 810.

It sounds like you are on the right track.

Terry

--- In QuadtoneRIP@yahoogroups.com, "shileshjani" <shileshjani@...> wrote:
>
> Jeff,
> 
> 55% ink limit to attain Dmax is a good thing. It just means that you don't have to use too much ink get get density. This number is not uncommon.
> 
> Shilesh
> 
> --- In QuadtoneRIP@yahoogroups.com, "J. Steel" <jsteel@> wrote:
> >
> > Hi all,
> > 
> > I'm getting my feet wet into the realm of QTR, and attempting to make a calibration for Exhibition Fiber, using an Epson 2200 with OEM Ultrachrome inks. I've printed out the K/LK-only file from the Files section as, if I'm reading Tom Moore's guide correctly, those are the only two inks that I need to worry about since I'm not using quad-tone ink sets. I'm on a Mac, running Mac OS X v10.5.8 and have QTR 2.6.2 installed. I printed the file using Photoshop CS3, no color management (file untagged), QTR calibration mode, calibration limit at 100, paper type set to Photo, 2880 dpi. 
> > 
> > After letting the print dry for a couple of hours, I'm getting what looks to be maximum coverage around 55% black; I hit a density of 2.14 (measured with the Spyder3Print spectro) at that level, and it fluctuates up/down(!) by .01 from there, up to a maximum of 2.18 at 100%. The fact that I seem to be hitting full coverage at 55% is giving me pause; the examples given in the guide are in the 80%+ range. 
> > 
> > Does 55% sound about right for EEF with this inkset? Is 2880 throwing down too much ink on this stock? Has anyone else tried it? And input that you might have would be greatly appreciated. Thankfully Atlex is having a nice sale on the stuff right now, as I've just about burned through an entire box already between Spyder3Print calibration and now printing QTR targets. 
> > 
> > Thanks and best regards,
> > Jeff
> >
>