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
Message
Re: [QuadtoneRIP] Ink separation test problem - Density goes up and then down for blacks
2015-10-03 by Paul Roark
That's normal. That is why there is a black ink limit -- the high point in the density curve. Different papers can absorb differing amounts of ink. When they get overloaded the test patch will get a git lighter. Often there is a bit of a plateau at the top. The left edge of that plateau is where you want to have the ink limit (or black boost, but don't worry about that yet).
Paul
On Sat, Oct 3, 2015 at 12:03 PM, rafaelrojasphoto@... [QuadtoneRIP] <QuadtoneRIP@yahoogroups.com> wrote: