QTR-Quadtone RIP

To follow up on this topic, I was struggling to get the QTR curves fully linear, and (finally) tried Paul's advice about using the Epson driver with an ICC.

I made test strips with both the color controls and the Advanced BW mode, and then made ICCs from both of these. After printing the Northlight BW test file, the color driver looked good and the ABW mode with ICC was just astonishing. There was detail from the brightest highlights down in to the very deepest shadows. Yes!

If anyone out there is trying an Eboni setup, I highly recommend taking Paul's advice and working first with the Epson driver in ABW mode. His instructions for making an ICC with a flatbed scanner and a gray card gave terrific results.