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Digital BW, The Print

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Re: Arches and BO problem on epson 1400

2014-12-01 by richard@...

Something I have done in the past is print a 360 and 720 ppi ink separation page with 1px, 2 px, and 4 px white lines running the length of the test chart. I print that at an ink limit of 100 to see at which point the dot gain starts to surpass the paper's ability to hold the dot—this is the only time I look at a print with a loupe... At some point there is a trade off between maximum black and the ability to hold detail. That is part of the reason the multi dilution inksets were developed, and what you are sacrificing printing with a single channel (and printing on an uncoated paper).

I don't have any uncoated arches here to test the black only curves, but I will sacrifice a sheet of Cot-320 to see what the dot gain is like and how a black only curve and the uncoated arches curve looks. judging from printing the ink separation page i just printed it doesn't look promising.

I'll upload my modified ink separation dot gain page for the 1400/1430 at the link below. Print this with an ink limit 100 to see where you start to compromise detail for density. it is helpful for setting ink limits for different shades—especially the three darkest ones. . I'll include my modified ink separation page for the 1400/1430 that has the dilutions in order from darkest to lightest.


Richard Boutwell

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