Roy,
I haven't seen such drastic changes in dmax with the papers I tested.
Here are some comparisons of dmax readings (neutral blend of warm:cool
curves) for 3 papers at 1 hour after printing and 24 hours:
1 hr - 24 hrs
Epson Photo Paper: 1.932 - 1.932
Epson Premium Semi-gloss: 2.337 - 2.310
Ilford Smooth Pearl: 2.301 - 2.260
Carl
On Wednesday, January 21, 2004, at 01:12 AM, Roy Harrington wrote:
>
> Something very strange is happening to my prints using UT2 on
> Ilford Heavy Weight SemiMatte paper. The high end densities are just
> melting away very rapidly.
>
> I printed a step wedge this morning about 11 o'clock, I used a
> hair drier on it for several minutes, and then waited about hour.
> I measured the exact same wedge five times during the day -- see the
> times.
> Also here's a graph of the ink usages -- carbon-only M and LM(m).
>
> Roy
>
> --------------
> 0 0% |
> 13 5% | m
> 26 10% | m
> 38 15% | m
> 51 20% | m
> 64 25% | m
> 77 30% | m
> 89 35% | m
> 102 40% | m
> 115 45% | m
> 128 50% |M m
> 140 55% | M m
> 153 60% | M m
> 166 65% | M m
> 179 70% | M m
> 191 75% | M m
> 204 80% | M m
> 217 85% | M m
> 230 90% | M m
> 242 95% | m M
> 255 100% | m M
>
>
> CREATED "1/20/2004" # Time: 12:13
> XYZ_Y Lab Step Gain Density
> 82.00 92.57 0 0.00 0.086 ***
> 72.59 88.25 5 -0.01 0.139 ****
> 63.88 83.90 10 0.01 0.195 *****
> 55.59 79.38 15 0.23 0.255 *******
> 48.59 75.19 20 0.07 0.313 ********
> 42.53 71.24 25 -0.37 0.371 **********
> 34.46 65.33 30 1.46 0.463 ************
> 28.68 60.50 35 2.04 0.542 **************
> 24.22 56.31 40 1.88 0.616 ****************
> 21.04 53.00 45 0.70 0.677 *****************
> 17.44 48.81 50 0.54 0.758 *******************
> 14.52 44.97 55 -0.03 0.838 *********************
> 11.79 40.87 60 -0.29 0.928 ************************
> 9.39 36.73 65 -0.51 1.027 **************************
> 7.36 32.60 70 -0.74 1.133 *****************************
> 5.89 29.12 75 -1.72 1.230 *******************************
> 4.28 24.59 80 -1.49 1.369
> ***********************************
> 3.05 20.24 85 -1.47 1.516
> **************************************
> 1.99 15.44 90 -0.93 1.701
> *******************************************
> 1.36 11.72 95 -1.63 1.866
> ***********************************************
> 0.66 5.98 100 -0.00 2.180
> *******************************************************
>
>
> CREATED "1/20/2004" # Time: 12:18
> XYZ_Y Lab Step Gain Density
> 81.64 92.42 0 0.00 0.088 ***
> 72.15 88.04 5 0.09 0.142 ****
> 63.64 83.78 10 0.05 0.196 *****
> 55.34 79.24 15 0.32 0.257 *******
> 48.35 75.05 20 0.20 0.316 ********
> 42.38 71.13 25 -0.25 0.373 **********
> 34.28 65.18 30 1.67 0.465 ************
> 28.58 60.41 35 2.22 0.544 **************
> 24.13 56.21 40 2.10 0.617 ****************
> 20.98 52.93 45 0.91 0.678 *****************
> 17.38 48.73 50 0.80 0.760 *******************
> 14.53 44.98 55 0.16 0.838 *********************
> 11.73 40.79 60 0.03 0.931 ************************
> 9.37 36.69 65 -0.21 1.028 **************************
> 7.28 32.43 70 -0.25 1.138 *****************************
> 5.90 29.17 75 -1.46 1.229 *******************************
> 4.31 24.66 80 -1.22 1.366
> ***********************************
> 3.14 20.59 85 -1.49 1.503
> **************************************
> 2.02 15.60 90 -0.68 1.695
> *******************************************
> 1.39 11.86 95 -1.34 1.857
> ***********************************************
> 0.71 6.41 100 0.00 2.149
> ******************************************************
>
> CREATED "1/20/2004" # Time: 14:04
> XYZ_Y Lab Step Gain Density
> 81.60 92.40 0 0.00 0.088 ***
> 72.22 88.08 5 0.32 0.141 ****
> 63.73 83.82 10 0.56 0.196 *****
> 55.28 79.20 15 1.25 0.257 *******
> 48.54 75.17 20 1.21 0.314 ********
> 42.28 71.06 25 1.26 0.374 **********
> 34.33 65.23 30 3.44 0.464 ************
> 28.49 60.33 35 4.47 0.545 **************
> 24.06 56.15 40 4.62 0.619 ****************
> 20.95 52.90 45 3.62 0.679 *****************
> 17.33 48.67 50 3.82 0.761 ********************
> 14.77 45.31 55 2.96 0.831 *********************
> 12.00 41.21 60 3.00 0.921 ************************
> 9.60 37.12 65 3.04 1.018 **************************
> 7.41 32.73 70 3.44 1.130 *****************************
> 6.23 29.98 75 1.82 1.206 *******************************
> 4.66 25.75 80 2.03 1.332
> **********************************
> 3.47 21.84 85 1.84 1.460
> *************************************
> 2.46 17.74 90 1.89 1.609
> *****************************************
> 2.02 15.61 95 -0.49 1.695
> *******************************************
> 1.28 11.15 100 0.00 1.893
> ************************************************
>
> CREATED "1/20/2004" # Time: 17:48
> XYZ_Y Lab Step Gain Density
> 81.78 92.48 0 0.00 0.087 ***
> 72.18 88.06 5 0.71 0.142 ****
> 63.80 83.86 10 1.13 0.195 *****
> 55.44 79.29 15 2.03 0.256 *******
> 48.57 75.19 20 2.33 0.314 ********
> 42.39 71.14 25 2.56 0.373 **********
> 34.17 65.09 30 5.37 0.466 ************
> 28.52 60.36 35 6.48 0.545 **************
> 24.14 56.23 40 6.82 0.617 ****************
> 20.99 52.94 45 6.07 0.678 *****************
> 17.43 48.80 50 6.41 0.759 *******************
> 15.03 45.67 55 5.45 0.823 *********************
> 12.25 41.60 60 5.71 0.912 ***********************
> 9.90 37.67 65 5.79 1.004 **************************
> 7.68 33.31 70 6.42 1.115 ****************************
> 6.67 31.04 75 4.35 1.176 ******************************
> 5.16 27.18 80 4.33 1.287
> *********************************
> 4.08 23.93 85 3.53 1.389
> ***********************************
> 3.17 20.72 90 2.68 1.499
> **************************************
> 2.78 19.13 95 -0.27 1.556
> ***************************************
> 1.92 15.05 100 0.00 1.717
> *******************************************
>
> CREATED "1/20/2004" # Time: 21:34
> XYZ_Y Lab Step Gain Density
> 81.59 92.39 0 0.00 0.088 ***
> 72.30 88.11 5 0.67 0.141 ****
> 63.79 83.86 10 1.31 0.195 *****
> 55.25 79.18 15 2.51 0.258 *******
> 48.72 75.28 20 2.68 0.312 ********
> 42.31 71.09 25 3.23 0.374 **********
> 34.19 65.11 30 6.16 0.466 ************
> 28.47 60.31 35 7.52 0.546 **************
> 24.08 56.16 40 8.02 0.618 ****************
> 20.99 52.94 45 7.29 0.678 *****************
> 17.40 48.76 50 7.83 0.759 *******************
> 15.05 45.70 55 6.89 0.822 *********************
> 12.40 41.84 60 7.01 0.907 ***********************
> 10.01 37.85 65 7.30 1.000 *************************
> 7.90 33.78 70 7.69 1.102 ****************************
> 6.93 31.66 75 5.50 1.159 *****************************
> 5.43 27.92 80 5.46 1.265
> ********************************
> 4.26 24.51 85 4.98 1.371
> ***********************************
> 3.62 22.39 90 2.79 1.441
> *************************************
> 3.18 20.74 95 -0.02 1.498
> **************************************
> 2.29 16.95 100 0.00 1.640
> ******************************************Message
Re: [Digital BW] UT2 on Glossy -- very weird
2004-01-21 by Carl Schofield