QTR-Quadtone RIP

Thanks.  That makes sense.

However I've just noticed that while there is a piezography curve for
VFR for the larger Epson printers, there's not for the desktops, like
the 2100/2200.  Has anyone produced one?  How warm / cool is VFA using
K7 (neutral)?

F_P


--- In QuadtoneRIP@yahoogroups.com, "Roy Harrington" <roy@...> wrote:
>
> 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
> > > >
> > > >
> > > >
> > >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>