QTR-Quadtone RIP

This is just a short reply from the phone. 

The bumpy bullseye is from the crossover points not being accurate for those ink limits. The 21 step increase "looks" linear in the graph, but the 5% difference just isn't enough to show the bumps in the curve. That was the exact case for me testing the new p800 printer with the premise curves (even after linearizing the raw curves) the same ink limits produced crossover points that were 8-12% off for the pre made curves. Looking at the quad curves there is a different shape to the ink channels emphatic correspond to the bumps in the bullseye. I'm writing it up and making some a post about the printer with QTR and the curves I use in the next few weeks

Richard Boutwell