I have looked through this discusion board and do not see any FAQs and any past discussion on this topic. Maybe I'm overlooking something. I'm attempting to optimism B&W printing on Epson 2200 using UT7 inks and QuadTone RIP. Following instructions (no color management) included with QTR download I have printed the QTR-21X4-random Reference file. Paper being used is MOAB entrada 300lb. This was printed via the QuadTone RIP using a 50/50 blend of UT7-EEnhMatte-cool and UT7-EEnhMatte-warm. This has been scanned using Eye-One Spectro with the "Measure" tool included with ProfileMaker 5. Below is the QTR-Linearize-Data QTR-Linearize-Data version 2.5.1.0 File: /Applications/ProfileMaker Pro 5.0.8/Measurement Files/test2_51step-out.txt Step Dens Lab A B 0.00 0.023 97.97 -0.10 1.99 - a| b L + 5.00 0.091 92.14 0.31 1.83 - |a b L + 10.00 0.166 86.11 0.65 1.72 - | a b L + 15.00 0.245 80.10 0.96 1.40 - | a b L + 20.00 0.325 74.40 1.20 1.33 - | ab L + 25.00 0.397 69.51 1.33 1.06 - | ba L + 30.00 0.487 63.85 1.55 0.61 - | b a L + 35.00 0.556 59.69 1.56 0.61 - | b La + 40.00 0.619 56.16 1.58 0.20 - b L a + 45.00 0.685 52.54 1.64 -0.12 - b|L a + 50.00 0.747 49.39 1.60 -0.39 - bL| a + 55.00 0.818 45.91 1.56 -0.98 - bL | a + 60.00 0.876 43.24 1.47 -1.34 - bL | a + 65.00 0.940 40.38 1.35 -1.67 - bL | a + 70.00 1.025 36.83 1.25 -1.79 - b | a + 75.00 1.086 34.40 1.10 -1.98 - L b | a + 80.00 1.177 31.02 1.03 -1.72 - L b | a + 85.00 1.244 28.65 0.99 -1.43 - L b | a + 90.00 1.381 24.20 1.02 0.21 - L b a + 95.00 1.480 21.26 1.13 1.55 - L | a b + 100.00 1.543 19.49 0.40 0.98 - L |a b + LINEARIZE="97.97 92.1375 86.11 80.0975 74.395 69.5075 63.8475 59.6925 56.155 52.5425 49.3875 45.915 43.24 40.375 36.83 34.4 31.0175 28.6525 24.1975 21.2575 19.4875" So far, so good. However this is where I get lost in the instructions provided with QTR. The next step is to "Linearize a QuadTone RIP Curve." Instructions say: "To use this feature, simply create the ink description file, doing the partition." QUESTION: Do I make this "ink description" file from scratch; do I use one from the "Exampleinks" file; if I use one from the Exampleinks file, which one do I use; or, is there another ink description file located elsewhere that I need to use? When I get the correct ink description file to work with (hopefully someone will inform me of this), I know to change GRAY_HIGHLIGHT and GRAY_SHADOW fields to 6 and 8 respectively, as per instructions. The next step has me making a quad curve from this new ink description file via, I believe, by using the Drop-Quad-Profile. I should next print the Step-21-gray stepwedge using this new quad curve and measure as before. The new Quad Ink Descriptor File will have the Linearization information that I am to "copy and paste to be bottom of the ink description file." ANOTHER QUESTION: which ink description file do I paste this into? and does this actually go, as the instructions list, just at the bottom of the file under "UC_NEUTRALIZER=NO." Once I have the correct ink description file modified with the new Linearization information I am to reprocess the ink description file with Drop-Quad-Profile and hopefully arrive at a perfect profile to print with. Unless I'm missing something here completely, I am at a loss to see where any of the information obtained in the first QTR-21X4-random Reference file and resulting measurement is used in the development of the final profile. Any help appreciated. DD
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Linearization of QuadToneRIP Curve via Eye-One Spectro
2008-04-02 by deanedennis33
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