QTR-Quadtone RIP

In my experience, these anomalies can occur with any paper. We have encountered mid-sheet and mid-roll spots on Hahnemuhle PRB caused by seeds and other plant material which had been missed by QC. Hahnemuhle replaced the sheets and rolls involved. We also ran into coating flaking with Epson Exhibition Fiber. All that said, we have not run into any difficulties with Canson, as yet. But, we’re always on the lookout.



Mick



From: <QuadtoneRIP@yahoogroups.com> on behalf of "brian_downunda@... [QuadtoneRIP]" <QuadtoneRIP@yahoogroups.com>
Reply-To: <QuadtoneRIP@yahoogroups.com>
Date: Sunday, May 20, 2018 at 9:22 AM
To: <QuadtoneRIP@yahoogroups.com>
Subject: [QuadtoneRIP] Re: Neutral Prints With QTR and 7890





Just to be clear, when I said that the Ilford Smooth curve was perfect for Platine and IGFS, I was referring to linearity.  Yes, it's not hard to fix if it's not linear, but it's better to be closer to linearity as a starting point, and it's a pleasant and unexpected surprise to get a curve that is dead straight.



Re toning, my previous comments still apply.  The 3880 neutral QTR-OEM curves are slight warm.  I don't mind it at all, it's like a very, very mild version of Special Edition.  It sounds better than what you have at present.  To approximate neutral on Platine I add in 19% of the cool curve.  I don't seem to have notes on what I used for CRP, but I think it's about 15%.



In my view getting dead neutral with QTR is tricky if the shipped neutral curve isn't.  Your only two options are to try to play with the toning inks, which seems like a dark and mysterious art to me, or to blend curves, which is fairly approximate.  I think dead neutral is over-rated and so I've not tried to master the dark and mysterious art.  The approximate blend seems to keep my few dead neutral customers happy enough.



Thanks for your feedback on CRP.  Your dMax problems came right as I was running low and was just about to stock up at the end of a big discount in this country.  So I got a single pack express shipped and tested it.  No dMax or mottling problems at all, and I spoke to importers and distributors who new nothing about it.  What I did find was a slight colour shift to warm.  Not enough to be seen in a colour print, except in neutral tones, which shifted from neutral to slightly warm.  Ditto for QTR-OEM.   A reprofile fixed the colour printing.