I've updated my PDF on this project at http://www.paulroark.com/BW-Info/4000-Noritsu-BW-Variable-Tone.pdf It includes an explanation of my procedure for making PS curves profiles that match my gray gamma 2.2 ICC profiles (near the end of the PDF). FWIW Paul www.PaulRoark.com
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Epson-Noritsu B&W inkset for Epson 4000
2012-03-22 by Paul