QTR-Quadtone RIP

David,

I am using the profile "PZDN-X800-Meth3-1_8.quad". With the Methodology 3 ink set and the Epson 3800 this profile gives a density range of about 1.8 with green light and about 2.8 for UV processes on Pictorico.

No truncation is necessary with carbon transfer as we can adjust for the density range of the negative with the strength of the dichromate sensitizer. So I am matching shadow density of the negative with time of exposure, and highlight density of the negative with the strength of the dichromate sensitizer. 

When looking at the Cone literature be aware that his density range data is for optical (green light I assume), not UV. By my estimation the UV DR of his quad profiles for digital negatives is about 50% higher than the value given.


Sandy



--- In QuadtoneRIP@yahoogroups.com, 228044881 228044881 <cheesecraft@...> wrote:
>
> May I ask what sort of density range it achieves on a carbon print and if you have to truncate the curve to a suitable density range in photoshop or have it truncated for you by inkjetmall people?
> 
> Thanks
> David
> 
> 
> 
> ________________________________
>  From: SandyK <sanking@...>
> To: QuadtoneRIP@yahoogroups.com 
> Sent: Tuesday, 26 June 2012 12:16 PM
> Subject: [QuadtoneRIP] Re: "starter profiles" for digital negatives
>  
> 
> Â  
> Actually you can use the 3800/3800 to make both digital negatives and K7 Piezography prints on paper by means of different profiles, and switching out a couple of the inks in the system. 
> 
> "This update is a way to use both Piezography Digital Negative and the Piezography K7 printing systems together by swapping out two ink positions and using newly reorganized QTR curves when one wants to make digital negatives â€" and then swapping back in the two original Piezography ink positions in order to make prints."
> 
> You can basically switch the inks with a couple of power cleaning. The switch does waste some ink, but gives you the flexibility of making high quality K7 monochrome prints and digital negatives.
> 
> What you lose, obviously, is the ability to make color prints.
> 
> Sandy
> 
> --- In QuadtoneRIP@yahoogroups.com, "John" <jthacker@> wrote:
> >
> > Very interesting and appealing, I will investigate but not sure I can totally dedicate my 3800 to digital negatives.
> > John
> > 
> > --- In QuadtoneRIP@yahoogroups.com, "SandyK" <sanking@> wrote:
> > >
> > > If you are able to dedicate the printer to digital negatives I would recommend Jon Cone's Digital Negative Methodology #3. I have installed this inkset on my Epson 3800 and am getting negatives for carbon printing that are much freer of artifacts than I was ever able to get with the Epson K3 ink set.
> > > 
> > > http://www.piezography.com/PiezoPress/blog/piezography-digital-negative-update/
> > > 
> > > 
> > > Sandy 
> > > 
> > > 
> > > 
> > > 
> > > --- In QuadtoneRIP@yahoogroups.com, "John" <jthacker@> wrote:
> > > >
> > > > Sorry if I didn't provide enough detail, but I'm using a MAC, Espon 3880 UC, and Ilford Multigrade Fiber glossy. Thanks
> > > > 
> > > > --- In QuadtoneRIP@yahoogroups.com, "John" <jthacker@> wrote:
> > > > >
> > > > > I'm just getting started and trying to find a source for QTR profiles used for creating digital negatives. In particular, I want to tackle silver gelatin first. Any assistance will be greatly appreciated.
> > > > >
> > > >
> > >
> >
> 
> 
>  
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