QTR-Quadtone RIP

Hi Mr.Roark

Actually I'm using your Red River Polar Matte curve (the one from 2011-11) on an Epson 1430 with EB6 full set. Mac Mountain Lion. Last week, my prints were OK and the 21-steps tif file was printing OK.

You're right about the load since I was using an Epson Ultra Presentation Matte with the Polar curve. I think that the Epson paper is less coated or cheaper (that I don't know)

So I reprinted on the RedRiver one, problem's gone for the mottling effect. Still I have a strange problem. If you have access to my dropbox folder - Epson 1430 (I'm not very good at sharing stuff on the Internet), there is some interesting results in there.

The file "printer test A_new" shows what I'm printing and the results for Epson (epson_dr) shows a missing square in the yellow patch. The file "qtr_dr" is more like it but if you look at the file "qtr_ink_cal_30" you can see that something is wrong.

The scan is a bit blurred so I could measure the patches using my scanner and Photoshop as a densitometer (following the instructions in your pdf).

https://www.dropbox.com/l/D7pRigvH7rhsjxwMLb5Uy9/invite

Thanks for any advice.

Jacques Caron
Le 2013-06-30 à 00:43, Paul Roark <roark.paul@gmail.com> a écrit :

> Lots of variables -- the load that QTR is printing the patches would be the
> first one I'd be sure is equalized.  Too much ink on the paper will give a
> mottled look.
> 
> Paul
> www.PaulRoark.com
> 
> On Thu, Jun 27, 2013 at 8:17 AM, jcphoto52 <jacques.caron@....ca>wrote:
> 
>> **
>> 
>> 
>> Hi all
>> 
>> Is it normal that when I'm printing patches of pure colours , the Epson
>> driver is giving me ultra smooth results and QTR shows more "mottled"
>> printing?
>> 
>> Thanks
>> 
>> 
>> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
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Jacques Caron
Photographe
jacques.caron@...





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