QTR-Quadtone RIP

Roy

I am really amazed at the whole QTR thing .. How well it works, and how the community responds to questions.

My starting with level 4  ... Is partially a personality quirk  ...  But also there is a practical side to what I am doing.

About five years ago I cheated on the whole digital print thing ... I had a project and I decided to work with a professional printer.  It meant I had someone doing all the work with the inks, machines and paper. I just needed to work with the image on the monitor end of things.  I focused on one paper and one ink set  .. And a simple system in order to make it work well. 

Eventually I realized ... I would have to set up my own system and bought a printer.  And then a two months ago both my monitor and computer died.

So I am taking this opportunity to start from scratch and learn everything I can ... Because I know in a month or two I will have work flow that works and I will think I no longer have time for the basics and be open to change.

The reason I ended up at level four is it seems fundamental to get the ink flow right.  Perhaps because I am a mile high .. Or the personality of the printer I am using some of my papers are fluorescing with extra ink on black edges with the k7-CTR profiles.
Two papers I need to make work  ... I need to reduce ink flow.  One is the Hahnemuhle photo rag ... I spent the day printing 255 grays and adjusting the ink limits and gama in the advanced adjustments ,, and have something that works well.

And the other is a Vellum paper that there are no profiles for  .. And wants very little ink before it starts to coagulate.

I did manages to work up a good set of Ink separation numbers  ... And I learned a whole lot doing them  ... Until I rain up against the K7 issue  ... And seems got in over my head again.

I'll go back to level 2 and work these things through  ... But I still feel doing each small thing well is what supports the larger goal of a beautiful print. So I do want to get back to this and see if I can make it work.

Thanks again  ... I am still looking at what you wrote yesterday  ...  Most of it I am getting solid on  ... Except for what the printer and profiles are doing  ...  Still more work to do.

Michael


--- In QuadtoneRIP@yahoogroups.com, Roy Harrington <roy@...> wrote:
>
> The issue with the K7 inks is that you don't have an easy starting place with
> the Cone curves (QTR profiles).  So to make new ones, you need to start from
> scratch as opposed to just re-linearizing them.   In practice there's almost no
> good reason to bother.
> 
> If you do want to do some customization the most useful thing to do is make
> a custom grayscale ICC profile.  This gives you all the color management
> features in Photoshop -- softproofing and a print profile.  In fact
> the print profile
> gives you very similar functionality as the QTR profile re-linearizing
> -- but better.
> Because the ColorManagementSystem can then match the embedded file
> profile with the driver/ink setup.   See Amadou's Level 2 for this.
> 
> (as has been said before, starting at Level 4 will almost certainly give worse
> results than starting at Level 1 and progressing.)  I think you really
> need to have
> the visual understanding about why you are customizing.
> 
> Roy
> 
> On Thu, Jul 23, 2009 at 5:24 PM, mberman89<j6mb@...> wrote:
> > I hope I am a little unclear in my question
> >
> > does this mean there is no way for me to make a QTR profile with K7 inks
> >
> > and the only way to use these inks is with an ink jet mall profile ??
> >
> > michael
> >
> > .
> >
> >
> > --- In QuadtoneRIP@yahoogroups.com, amadou diallo <amadiallo@> wrote:
> >>
> >> Cone generates his K7 curves with proprietary software (his own). So you
> >> cannot modify his files via QTR. IJM can make custom K7 curves for your
> >> individual printer.
> >>
> >>
> >> --
> >> amadou diallo
> >> www.blogfiftygreatestphotos.com
> >>
> >>
> >> [Non-text portions of this message have been removed]
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>