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

Re: green-yellow

I'm glad it is working for you. I haven't looked back since I figured out how to use it. There is no doubt that it is a little tricky to learn, but once you figure out what the driver is doing, it offers you perfect control over the printer, and keeps weird non-linear things from happening. The odd thing to me is that the Windows QTRgui interface is so much better than the mac version! I use VMware windows emulation on my mac at home and create all my ink description files in windows, then drag them over to the mac for actual printing.
On Apr 15, 2009, at 12:43 PM, Marek Matusz wrote:

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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