U of S | Mailing List Archive | alt-photo-process-l | RE: green-yellow

RE: green-yellow

Thanks for the tip. I looked into this system a while back when my 2200 was giving me problems, but it seems so complicated. I gave it anothe trial yesterday and in a few hours I was printing stepwedges to test ink densities for differrent processes. Once you get a hang of the program and spent some time messing with the different controls it is actually quite simple for printing diginegatives and gives you absolute control. I never liked the fact that light inks were used for printing negatives, as they contibute a lot of solvent but not much ink density.
I printed using black (no light balck) and yellow (there is only one yellow to begin with) inks with outstanding results. No ink puddling on very thin crystal clear transparency, which I use for gum negatives. I like black because it allows for easy registration, and also black's visual density is a god indicator of UV density. Addition of yellow ink smooths already excellent tonal gradations. I will try to print some more dense negatives on Pictorico today for palladium and carbon.
Thanks once again 

Date: Mon, 13 Apr 2009 13:36:53 -0500
From: wcharmon@wt.net
Subject: Re: green-yellow
To: alt-photo-process-l@usask.ca

Sure, you can set up the profile to use just one or as many inks as you choose. 
On Apr 13, 2009, at 1:16 PM, Marek Matusz wrote:

Is it possible with the QTR RIP to print on Epson printer (in my case 3800) with black ink only (NO light or light light black) or black and yellow ink only? 
> Date: Mon, 13 Apr 2009 10:18:10 -0500
> From: wcharmon@wt.net
> Subject: Re: green-yellow
> To: alt-photo-process-l@usask.ca
> >
> This chart is measurement data taken from the very useful ink 
> percentage test that you can print using the QTR RIP. And we have 
> found that the colors are additive. ( I use we, because Michael 
> Mutmansky and I sort of put this thing through the wringer about two 
> years ago and he had this hunch that the colors might additive, and 
> sure enough, the testing proved it to be true)
> The ink load remark was to point out that if you print out 100% of 
> each ink color, you will have a big puddle of ink on your pictorico. 
> So you need to take into account the cumulative ink load (in percent) 
> for all the colors you are using to avoid over-inking the substrate 
> you are printing on.
> >
> > Now, that I have received Clay's chart, I find it fascinating....but 
> > I need to clarify this, Clay. Clay, if I am hearing you correctly, 
> > your chart shows/proves that UV density is additive when colors are 
> > mixed. That much is correct (which dovetails with Alberto's 
> > information)? But you also seem to say that there is more ink laid 
> > down, is that correct, too? But in your system, you lessen the ink 
> > load, correct again? Sorry if these seem so dense but I want to 
> > really understand this so I can file it in my brain file cabinet and 
> > put it to rest.
> > Chris
> >
> >

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