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QTR-Quadtone RIP

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Ink separation test problem - Density goes up and then down for blacks

2015-10-03 by rafaelrojasphoto@...

Hi all!


I am new here and new using QTRip ... I have read all manuals and understood things, or at least I think I had! That being said, I am having really strange problems when printing the ink separation tiff file in order to calibrate the overall black ink limit and the gray inks density values.


Basically, when I make the print of the ink separation file, with 2880 dpi resolution and the right type of black chosen (matte black in my case), I obtain for the Black ink ONLY a strange phenomenon in the print: the density values increase up to the ink limit 70-75 % and then they decrease! That is, the density I observe (and mesure with a densitometer) decreases from 75% up to the 100 %.


Is there something I am doing wrong, or is just my printer gone crazy?


Thanks in advance for your kind help!


Warm regards,


Rafael

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