QTR-Quadtone RIP

Hi Mel,

**
>  I am about to create QTR curves for the Epson 1290 using MIS UT2 inks for
> a variety of papers.
>
>
> I am starting with Epson Premium Semi Gloss and Epson Glossy Photo Paper,
> ...
>
> I have printed off the Ink Separation Test Page for each paper, no problem.
>
> ...
>
>  when using Epson Premier Lustre paper with UT2 ink and neutral tone, Black
> is not used, just C, M, LC, and LM and with Epson Enhanced Matte all
> "colours" except Yellow are used.
>
See http://www.paulroark.com/BW-Info/UT2-Readme.htm for a description of the
UT2 inks.  The default setup has Eboni matte black in the K position.  It is
not compatible with glossy paper.  (It'll rub off.)  As such, it is not used
for glossy or luster papers.  You can install a PK in the K position and use
it with glossy papers, or you can just generate the 100% black from the C
and M inks.

If PK is not installed and you use, for example, M to generate the 100%
black, compare the LM to the M printed at it's ink limit.

You might want to make 2 profiles -- LM&M in one, and LC and C in the other.
 Then you can mix them with the sliders to control tone.

While the M or C might result in a good dmax, keep an eye out for pizza
wheel marks.  Using the PK might reduce these, as it'll have less dampness
per unit of carbon, hopefully drying enough by the time it hits the rollers
to avoid the marks.  The exit rollers might also be removed from the
printer.

Note that you can also use QTR's Create ICC-RGB to make ICCs from the
existing Photoshop curves.  See
http://www.paulroark.com/BW-Info/Embedding_Photoshop_Curves_in_ICCs.pdf

Hope this helps.

Paul
www.PaulRoark.com

>
>


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