Here are the same figures when MIS PK is simply replaced with Epson PK. I have not relinearised the curve, simply swapped cartridges, flushed and reprinted the 21 step wedge: SampleID GRAY XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B 1 0.00 85.71 89.07 77.91 95.61 -0.33 -3.80 2 5.00 76.03 78.91 68.33 91.20 -0.12 -3.01 3 10.00 67.08 69.50 59.46 86.75 0.14 -2.16 4 15.00 58.96 61.00 51.56 82.38 0.35 -1.38 5 20.00 51.11 52.80 44.24 77.76 0.55 -0.85 6 25.00 44.77 46.17 38.61 73.66 0.71 -0.69 7 30.00 39.28 40.44 33.84 69.78 0.93 -0.72 8 35.00 33.60 34.50 28.96 65.35 1.18 -0.82 9 40.00 28.70 29.38 24.82 61.12 1.42 -1.06 10 45.00 24.37 24.86 21.18 56.94 1.74 -1.36 11 50.00 20.38 20.70 17.78 52.62 2.05 -1.62 12 55.00 16.82 17.03 14.73 48.29 2.26 -1.76 13 60.00 13.86 13.97 12.19 44.19 2.47 -1.98 14 65.00 11.24 11.28 9.96 40.05 2.67 -2.22 15 70.00 8.94 8.93 7.98 35.85 2.80 -2.42 16 75.00 6.86 6.82 6.20 31.39 2.92 -2.69 17 80.00 5.16 5.10 4.71 27.03 3.00 -2.81 18 85.00 3.84 3.78 3.53 22.94 2.89 -2.83 19 90.00 2.30 2.26 2.01 16.78 2.66 -1.45 20 95.00 1.54 1.51 1.28 12.64 2.43 -0.55 21 100.00 0.91 0.95 0.91 8.53 -0.17 -2.21 And here are the figures for my warm curve: SampleID GRAY XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B 1 0.00 85.70 89.06 78.01 95.61 -0.32 -3.88 2 5.00 76.20 79.09 67.98 91.28 -0.11 -2.56 3 10.00 67.56 69.97 58.87 86.98 0.19 -1.17 4 15.00 59.78 61.78 50.77 82.79 0.52 0.22 5 20.00 52.69 54.31 43.45 78.64 0.84 1.66 6 25.00 46.09 47.38 36.92 74.43 1.15 2.93 7 30.00 39.94 40.92 30.99 70.12 1.50 4.18 8 35.00 34.38 35.10 25.70 65.83 1.87 5.49 9 40.00 29.58 30.08 21.39 61.72 2.20 6.48 10 45.00 25.42 25.76 17.79 57.80 2.47 7.31 11 50.00 21.15 21.34 14.23 53.32 2.77 8.19 12 55.00 17.46 17.54 11.40 48.94 2.98 8.55 13 60.00 14.19 14.18 8.90 44.49 3.27 9.08 14 65.00 11.42 11.35 6.93 40.17 3.46 9.24 15 70.00 9.31 9.23 5.59 36.42 3.43 8.86 16 75.00 7.16 7.08 4.23 31.98 3.41 8.39 17 80.00 5.57 5.48 3.24 28.06 3.37 7.98 18 85.00 4.15 4.06 2.38 23.88 3.28 7.40 19 90.00 2.80 2.74 1.62 18.95 3.07 6.35 20 95.00 1.80 1.77 1.12 14.22 2.36 4.41 21 100.00 0.87 0.91 0.86 8.19 -0.24 -2.06 So Epson PK beats MIS PK by 10bps of dMax. However these figures are still way lower than what PKN3 seems to be yielding.... > From: Steve Kale <stevekale@...> > Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com> > Date: Fri, 21 Jan 2005 14:06:28 +0000 > To: <DigitalBlackandWhiteThePrint@yahoogroups.com> > Subject: Re: [Digital BW] Neutral Photo Black > > > Any thoughts on MIS putting this in production? I am running MIS PK > (ESC7600-4-PK) with QTR and (a) FSN C, FSN M and FSN Y for neutral prints > and (b) UT 2 M and UT 2 LM for warm prints, glop in the LK slot and all > prints on EPSG. I can't get next day dMax to exceed 1.90 for either curve. > Here are the readings from my neutral curve after a short blast with the > hair dryer: > > Step L a b > 05 90.8 -0.3 -2.9 > 10 86.3 -0.1 -2.3 > 15 82.0 0.1 1.5 > 20 77.6 0.3 1.0 > 25 73.4 0.5 0.8 > 30 69.5 0.7 0.7 > 35 65.3 1.0 0.9 > 40 61.3 1.2 1.1 > 45 55.8 1.4 1.4 > 50 52.8 1.8 1.6 > 55 48.4 2.1 1.7 > 60 44.1 2.3 1.9 > 65 39.9 2.5 2.2 > 70 35.5 2.6 2.4 > 75 31.4 2.7 2.6 > 80 27.1 2.8 2.7 > 85 23.2 2.8 2.7 > 90 18.0 2.4 1.9 > 95 14.5 2.3 1.3 > 100 09.8 0.3 0.6 > > With BO I get a 100 step reading of L=10.1, a=0.2, b=-0.5. > > The curves limit inks to 90% and overlap the PK with the "dark grey" by 10%. > I am going to cross check with an Epson PK cartridge. > > Steve >
Message
Re: [Digital BW] Neutral Photo Black
2005-01-21 by Steve Kale