There is a density reversal from step 38 to 40 in the 51 step. On Dec 1, 2005, at 8:49 AM, joshhackney wrote: > > Hi Greg, > > The settings for the following linearization file were: > 2200, K7, HPR, QTR, Cone's K7 curve for HPR, 2880, Best, 21 patch > random target > > File: /Applications/QuadToneRIP/QTR 2.3.1/CurveDesign/Eye-One/i1 > Read Data/ > NK7_HPR_2880_best_21step_20051019-out.txt > Step Dens Lab A B > 00.00 0.036 96.85 0.70 -0.80- b | > a L + > 05.00 0.082 92.90 0.84 -0.14- b| > a L + > 10.00 0.144 87.83 1.08 0.48 - |b > a L + > 15.00 0.201 83.39 1.14 0.81 - | > ba L + > 20.00 0.259 79.10 1.22 1.07 - | > b L + > 25.00 0.321 74.64 1.27 1.37 - | > b L + > 30.00 0.390 69.99 1.23 1.50 - | a > b L + > 35.00 0.432 67.28 1.23 1.56 - | a b > L + > 40.00 0.494 63.42 1.17 1.52 - | a b > L + > 45.00 0.554 59.80 1.14 1.56 - | > aLb + > 50.00 0.620 56.05 0.97 1.43 - | a > b + > 55.00 0.691 52.25 0.73 1.32 - |La > b + > 60.00 0.768 48.35 0.46 1.27 - L|a > b + > 65.00 0.847 44.54 0.28 1.23 - L |a > b + > 70.00 0.939 40.44 0.24 1.05 - L a > b + > 75.00 1.018 37.10 0.18 0.82 - L a > b + > 80.00 1.107 33.61 0.41 0.53 - L | > ab + > 85.00 1.218 29.54 0.51 0.21 - L b > a + > 90.00 1.333 25.71 0.47 0.24 - L > ba + > 95.00 1.477 21.35 0.49 0.51 - L | > ab + > 100.00 1.641 16.93 0.64 1.31 - L | a > b + > > LINEARIZE="96.85 92.90 87.83 83.39 79.10 74.64 69.99 67.28 63.42 > 59.80 56.05 52.25 > 48.35 44.54 40.44 37.10 33.61 29.54 25.71 21.35 16.93" > > settings for the following file were the same, except 51 patch > random target. > I've re-scanned the same target with the i1 days later with the > same results, I've reprinted > the target and re-scanned - same results. > > File: /Applications/QuadToneRIP/QTR 2.3.1/CurveDesign/Eye-One/i1 > Read Data/ > NK7_HPR_2880_best_51step_20051019-out.txt > Step Dens Lab A B > 00.00 0.034 97.00 0.83 -0.63- b | > a L + > 02.00 0.054 95.26 0.83 -0.33- b | > a L + > 04.00 0.077 93.38 0.95 -0.09- b| > a L + > 06.00 0.100 91.45 0.97 0.10 - b > a L + > 08.00 0.134 88.69 0.93 0.28 - |b > a L + > 10.00 0.154 87.04 1.06 0.47 - |b > a L + > 12.00 0.182 84.90 1.04 0.50 - | b > a L + > 14.00 0.205 83.08 1.03 0.62 - | b > a L + > 16.00 0.221 81.91 1.15 0.81 - | > ba L + > 18.00 0.245 80.08 1.05 0.78 - | > ba L + > 20.00 0.288 76.97 0.96 0.81 - | > b L + > 22.00 0.291 76.75 1.19 1.12 - | > b L + > 24.00 0.326 74.35 1.15 1.18 - | > b L + > 26.00 0.366 71.62 1.04 1.07 - | > b L + > 28.00 0.364 71.74 1.19 1.34 - | > ab L + > 30.00 0.410 68.70 0.98 1.06 - | > ab L + > 32.00 0.443 66.58 0.93 1.09 - | ab > L + > 34.00 0.432 67.27 1.06 1.31 - | ab > L + > 36.00 0.454 65.86 1.12 1.41 - | ab > L + > 38.00 0.500 63.04 1.00 1.24 - | b > L + > 40.00 0.499 63.11 1.10 1.51 - | a > bL + > 42.00 0.531 61.20 1.07 1.37 - | > abL + > 44.00 0.565 59.19 1.00 1.34 - | > ab + > 46.00 0.568 59.00 1.07 1.53 - | > aLb + > 48.00 0.600 57.21 1.06 1.42 - | > ab + > 50.00 0.640 55.00 0.91 1.29 - | a > b + > 52.00 0.648 54.55 0.97 1.42 - | La > b + > 54.00 0.684 52.64 0.82 1.31 - |L a > b + > 56.00 0.729 50.28 0.63 1.13 - L a > b + > 58.00 0.742 49.62 0.58 1.29 - L| a > b + > 60.00 0.779 47.79 0.50 1.12 - L | a > b + > 62.00 0.822 45.72 0.37 1.09 - L |a > b + > 64.00 0.841 44.85 0.35 1.21 - L |a > b + > 66.00 0.879 43.06 0.30 1.06 - L |a > b + > 68.00 0.917 41.38 0.19 0.99 - L a > b + > 70.00 0.936 40.56 0.17 0.97 - L a > b + > 72.00 0.982 38.58 0.12 0.77 - L a > b + > 74.00 1.026 36.79 0.13 0.69 - L a > b + > 76.00 1.042 36.15 0.20 0.69 - L a > b + > 78.00 1.084 34.47 0.25 0.49 - L | > b + > 80.00 1.129 32.78 0.25 0.47 - L | > b + > 82.00 1.159 31.65 0.45 0.33 - L | > b + > 84.00 1.204 30.05 0.49 0.04 - L > ba + > 86.00 1.248 28.51 0.49 -0.00- L > ba + > 88.00 1.266 27.89 0.51 -0.12- L b| > a + > 90.00 1.335 25.62 0.45 0.03 - L > ba + > 92.00 1.397 23.69 0.41 0.26 - L | > b + > 94.00 1.454 22.00 0.42 0.47 - L | > b + > 96.00 1.506 20.52 0.53 0.65 - L | > b + > 98.00 1.571 18.75 0.44 0.89 - L |a > b + > 100.00 1.644 16.84 0.75 1.40 - L | a > b + > > The Lab values are not in order. > Cannot be linearized. > > If anyone has some input, that would be great. > > Best. > > Josh > > > --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Greg" > <dfaprinting@y...> wrote: >> >> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "joshhackney" >> <joshhackney@g...> wrote: >>> >>> >>> >>> >>> I can tell you that I have not been able to profile HPR very well >> yet. When I use a 51 patch >>> target, QTR create ICC tells me that the data is out of order, and >> in fact it is. The 21 patch >>> target does allow me to create a profile, and I have achieved >> satisfactory prints with this >>> profile. This whole thing is an issue that I need to address to >> Cone, but have not had time >>> to figure out how to present it in a logical way. Since I have >> quite successfully profiled >>> both Innova Photo Smooth Cotton, and Soft Texture, I suspect there >> is something funny >>> with HPR, or with the Cone curve for HPR. I haven't bothered to >> figured it out yet, because >>> I have been so pleased with the Innova papers. >> >> >> Could you post the measurement file for the HPR? You might be getting >> some kind of reversal that doesn't show up in the 21 step target. >> You could just copy and paste it into a message, that way you can get >> input from many different people. >>
Message
Re: [Digital BW] Re: Low Dmax on Epson 2200 with K7 inks response
2005-12-01 by Carl Schofield