QTR-Quadtone RIP

On Jul 31, 2016, at 12:28 AM, Roy Harrington roy@... wrote:

> On Mac sending data from any printing
> app to the driver goes through the system and potentially hidden conversions are being done.

Perhaps it's academic or far too technical at this point, but I have had luck on OS X sending image data to the QTR driver without the higher-level print systems mucking with it. Basically, I send TIFF files directly to the CUPS printer queue via CUPS's programming interface [1], with the appropriate options specified for the QTR curves, etc. This isn't a GUI program, but rather something I do with some scripting (in Ruby) at the command line (e.g., Terminal).

I don't recommend this method for most people -- Roy's Print-Tool is wonderful and definitely does the job, and I use it myself -- but I wanted to state for the record that Print-Tool is not the *only* way to do it. It is not easy to escape the clutches of OS X's forced color management, but it is possible.

--John

[1] https://www.cups.org/documentation.php/doc-2.0/api-cups.html#cupsPrintFile