QTR-Quadtone RIP

The ICC also handles non-linearities so its hard to go wrong that way.
Roy

On Feb 11, 2008 1:47 AM, ferdinand_paris <ferdinand_paris@...> wrote:
> 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
> > >
> > >
> > >
> >
>
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> Yahoo! Groups Links
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