QTR-Quadtone RIP

Roy

Thanks.  Now I see why there's only one K7 .qidf file, but 28 .quad
files.  I guess I can print and read a step wedge using a Cone
produced curve, see how linear it is on my printer, and if it is
linear, proceed as you suggest and create an .icc.  However if there
are non-linearities, I'm inclined to try your first method.

Are there any other gotchas?

Is there some place on the web that indicates how warm/cool various
papers are using piezo K7 inks?

F_P


But I don't understand 

--- In QuadtoneRIP@yahoogroups.com, "Roy Harrington" <roy@...> wrote:
>
> Hi F_P,
> 
> That's the right approach for the K7s.  They used a different method
to get the
> curves so there's no sources for curve modifying.  However I did one
> for the 2200
> so you'll find K7-1440-HanPhotoRag.txt in the 2200-K7 folder.
> 
> There's all another approach you might consider.  Just make a custom ICC
> profile built on top of an existing K7 qtr curve.  This does a very
good job
> matching the screen to print,  it gives you softproofing as well. 
You can even
> base the ICC on a K7 curve with changes in the ink limit in the
print dialog.
> (be sure that you always use the same ink limit change when printing).
> 
> Roy
> 
> 
> On Feb 10, 2008 4:56 AM, ferdinand_paris <ferdinand_paris@...> wrote:
> > I have a confession to make.  I have an i1 Photo, and have been taking
> > existing curves and setting the black limit, repartitioning the inks
> > and linearising the curves without any real problems.  But I have
> > baulked at making new curves from scratch.  Doing all this warm and
> > cool adjustment seemed like too much trouble and required too much
> > judgement.
> >
> > Now, I'm considering getting some Piezography inks, and I can't seem
> > to locate curves for some of the papers that I want to use, e.g. VFA.
> >  Then I realised that because these K7 inks don't allow you to adjust
> > the tone (for a given inkset), all I need to do is set the black
> > limit, repartition and linearise.
> >
> > Is this correct?
> >
> > F_P
> >
> >
> >
>