QTR-Quadtone RIP

See comments below

> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of xylonic2000
> Sent: Sunday, November 19, 2006 5:36 PM
> To: QuadtoneRIP@yahoogroups.com
> Subject: [QuadtoneRIP] Re: Toner Curve Confusion


...


> 
> Thank you Tom for the rapid response.  I have examined existing
> curves (UT7-EEnhMatte-cool, particularly) for clues to improve my
> creation of curves for matte papers.  In particular, I am trying to
> characterize 11X14-inch, acid-free, 300gsm, watercolor stock.

I suggest you try printing an image or step wedge (or both) on your paper
with an existing curve that seems closest to what you have. That will give
you an idea of what to expect and what improvements you'd like to make.

> 
> The term, "ink use selection" appears under "The Toner Curve tabs"
> when one reads "Creating Curves" in QTR Help.  I thought that it
> meant selecting Toner or Toner2 before initiating curve creation.

There's more to curve creation than selecting toner 1 or 2 and initiating
curve creation. Perhaps I don't understand what you are doing. Have you
printed the ink separation page to establish ink limits as described in the
user guide.

> Clicking on either tab highlights it and I assume it will be used to
> create the curve as the Gray Curve is used.  Practically, the Gray
> Curve seems always to be in force at all times.

The gray curve is always used. Toners are used to add (or remove) hue
to/from the grayscale curve. In QTR, for each paper we create multiple
curves (warm, cool, sepia etc). The curves can be combined during printing
to achieve the desired tonality of the image (warm, neutral,cool etc).
> 
> I made up three curves (Gray Scale, Toner, Toner2) and printed a 21-
> step wedge with each.  Examined for L-values in PS, there was no
> difference in density values at 100%, 50%, 10%, and 0% among the
> three prints; i.e. 100% density on the Gray Curve print was identical
> to the 100% densities of the Toner and Toner2 prints.

I have yet to use toner 2 when creating a curve.
> 
> Thus failing, I searched for some manner of invoking the Toner and
> Toner2 values, modifications, or whatever when preparing to print.
> Nothing found and thus my question.
> 
> Am I failing properly to invoke the toner values?
> 
> 
Hope this helps
Good luck