QTR-Quadtone RIP

Alan,

As Tom has mentioned the inks were pretty tailored for the Epson color driver.
(you mentioned someone had recommended them -- did they also recommend
a workflow/driver for using them?)

You could use QTR for them but I think you'll be using the light color inks to
simulate the gray tones of the image.  This would involve some trial to get the
"neutral" that you want.  One way to do this is create 3 curves -- C,M,Y and
blend them with the QTR printing blend sliders.   All this is a little
more involved
to get a neutral tone balance.

Other approaches are 1) to use Print Fix Pro software to create a
color ICC for the
Epson driver, 2) to use the color sliders in the Epson driver for tones.

Without having used the ink set I'm really not sure which will be easiest.

Roy

On 3/30/07, Tom Moore <rtmlists8888@...> wrote:
> Alan
>
> SG is essentially a colour inkset (albeit with reduced gamut) with a
> single black. Since QTR is not a colour RIP, I suspect you might have
> more success with the SG inks using the Epson driver and the Lyson ICC
> profiles. Once you receive Printfix you will be able to create your
> own ICC's for the paper you want to use (again for use with the Epson
> driver).
>
> I could be wrong of course, but with a single black it does not seem
> practical to construct curves in the manner QTR permits with the Epson
> Ultrachrome inkset with 2 or 3 blacks. The other alternative is to
> construct magenta and cyan curves blended with black and then combine
> these curves with yellow to create something near neutral. That sounds
> to me like one would be trying to do manually what a colour RIP would do.
>
> Sorry to sound so negative about your venture. Perhaps someone else
> has discovered a way to do what you want and will chime in. If you do
> decide to continue with QTR and the Lyson SG inks, please keep us
> posted as to your progress.
>
> Tom Moore