Richard,
That was Arches. That's why the high K limit.
It all works just fine. No problems here.
Paul
On Tue, Jun 2, 2015 at 9:27 PM, richard@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote:
Hi Paul. I just took a quick look. Your k boost/limit seems crazy high. Every paper and printer I have tested with these inks shows no increase in the MK channel after about 40% and will eventually start to reverse as the limit gets higher. Have you noticed that with these profiles you are making now with the 3800? How are the Lab_L measurements from the unlinearized print?
Looking at your density settings for the gray/toner inks (gray_value= on the mac) your whole number approach is not accurate enough when slicing the grayscale up with so many inks (4 or more). I don't want to seem like I am just picking on your methods here, but you can easily solve the cross over point banding problem by setting them more accurately to begin with (by using an interpolation method mentioned in one of the QTR pdfs floating around—I'm detailing it better in my writing, and providing a easy workflow and worksheet for it). Also, trying to hide the banding with more inks is an option, but the same can be done with fewer channels and increasing the overlap/gamma settings. See my post here: http://www.bwmastery.com/blog/2015/in-search-of-the-perfect-qtr-profile
I am all for pushing what is possible with ink jet printing, but trying to solve something with more complexity where it can easily be solved by being more careful might be setting people back instead of pushing printing forward.Richard Boutwell