Digital BW, The Print

Tom,

I'm not sure what would cause those values.  You can open the ICCs with Notepad and see the Lab A and B values I read.  Lab B values with the 1400-IlfordGold-N-1-nca-rgb.icc are a fairly straight line from -1 for the paper to +1 for the black.  The dmax I got was Lab L = 6.6.  With the output you measured the dmax was weak and also not reached at 100%.

So, assuming the inks are correct, I think the wrong profile got loaded.

In experimenting with the 1100 a few of us have noticed that sometimes the wrong profile prints the first time we use the printer, presumably after some other printer or profile has been used.  I have since noticed that happen with another Epson driver/printer.

So, I'm not sure what is causing this, but there is something in at least the Windows 7, CS5, Epson driver, ICC workflow that loads the wrong profile initially.  Maybe that happened to you.  Usually when I notice this problem occurring the 21-step Lab L ramp is way off, so it's obvious something is very wrong.

Try loading the Ilford Gold Neutral ICC and first just print a 21-step on a plain paper.  Then try the "real" test and see if it's any different.

Paul
www.PaulRoark.com 


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "thusband2003" <tom.husband@...> wrote:
>
> Any idea what would cause this? Printing on Gold Fibre Silk. Applied Paul's curve, UT14-IlfordGold-N-1, to the rgb-raw-16.psd file and to the  21 step RGB file, printed the 21 step on my 1400 per the glossy paper driver settings, dried it and took readings with my Colordata spectro.  I double checked the ink positions in the 1400 and they appear correct.
> 
> BEGIN_DATA_FORMAT
> SampleID	GRAY	LAB_L	LAB_A	LAB_B
> END_DATA_FORMAT
> NUMBER_OF_SETS	21
> BEGIN_DATA
> 1	0	13.11	0.04	-1.03
> 2	5	9.02	1.34	-2.04
> 3	10	9.56	1.18	-1.06
> 4	15	13.70	1.50	0.02
> 5	20	18.12	1.59	1.31
> 6	25	22.32	2.08	2.38
> 7	30	25.95	2.09	3.57
> 8	35	29.10	2.40	3.76
> 9	40	31.34	2.50	4.06
> 10	45	33.79	2.37	4.39
> 11	50	36.49	2.28	4.43
> 12	55	40.88	2.40	4.47
> 13	60	44.87	2.29	4.42
> 14	65	49.69	2.10	4.53
> 15	70	54.67	2.20	4.24
> 16	75	60.26	2.12	4.21
> 17	80	66.47	1.82	3.76
> 18	85	73.28	1.70	2.65
> 19	90	82.61	1.49	1.29
> 20	95	90.85	1.27	-0.21
> 21	100	97.44	1.10	-1.09
> END_DATA
> 
> Any hints really appreciated.
>