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Digital BW, The Print

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Black and Light Black printing with IJC OPM

2003-12-22 by adounoucos@aol.com

Antonis,

Thanks so very much for your discussion of creating profiles with IJC (and 
other software).   It gave me just the handle I was looking for.   In 
particular, the point I had not understood was "not intuitive" as you said, that is, the 
need to pull back the other inks as you near 100%, and at other transitions.  
 It may explain why when I measured ink limits on the first profiles I looked 
at and entered ink limits for my paper/ink combinations, it distorted the 
colors.   There are some experiments I did then that need repeating to understand 
what really happened.   Earlier posts of yours on July 4,2003, and Paul 
Roark's on July 19, 2003 dealt with these issues, but I didn't quite get it then.

Just now I have been looking at other 2200 profiles on IJC, and realized that 
most use three, four, or max five colors with two of them for toning, but 
none of the cool profiles have yellow, the supposed bad actor for metamerism.   
Most of my prints have been made with a 50% blend of EAM cool and warm which 
still do not have yellow.   In all but one set of gallery lights I have not seen 
any shift to green or magenta which I saw with the straight EP 2200 driver, 
and now understand why.

While you have now taken the mystery out of "swooping", and I can begin to 
deal with more than two inks, the understanding only adds to the magic of what 
can be done digitally.   I can see that there is still much art to this game, 
and that these tools are still only tools until mastered as in any other art 
form.   Meanwhile the IJC profiles are a great starting point.

Wow!

Angelo Dounoucos


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