Spectral ink simulatorSpectral ordered ink/paint soft proofing and separation engine. In the upper left corner we see the substrate, followed by subsequent layers of colorant in the configuration.
# virtual printer configured with one ink, black illuminant=D65 substrate=white ink1=black
illuminant=D65 substrate=green # green background ink1=black ink2=white ink2.black=white
# simulating charchoal and chalk illuminant=D65 substrate=rgb 1 0.6 0.6 ink1=black ink2=white ink2.black=white
# simulation using reasonable data; # gives a quite small color gamut illuminant=D65 substrate=white ink1=cyan ink2=magenta ink3=yellow ink4=black inklimit=2.5
# same as previous ink configuration # allowing only 150% ink on an pixel. illuminant=D65 substrate=white ink1=cyan ink2=magenta ink3=yellow ink4=black inklimit=2.2
# white paint + CMY print on black # illuminant=D65 substrate=black ink1=white ink1.black=white ink2=cyan ink2.black=cyan ink3=magenta ink3.black=magenta ink4=yellow ink4.black=yellow inklimit=3.0
# using simulated "ideal" inks - giving unnatural # gamut for CMYK illuminant=D65 substrate=white ink1=rgb 0 1 1 ink2=rgb 1 0 1 ink3=rgb 1 1 0 ink4=rgb 0 0 0
# CMYK printing on yellow paper illuminant=D65 substrate=rgb 1 0.6 0.6 ink1=cyan ink2=magenta ink3=yellow ink4=black
# duo-tone printing of green + black on white illuminant=D65 substrate=white ink1=black ink2=green
# duo tone printing with red / blue illuminant=D65 substrate=white ink1=red ink2=blue
# duo tone printing with red and green illuminant=D65 substrate=white ink1=red ink2=green
# printing with red/green/blue inks - # works quite well for colors in this photo illuminant=D65 substrate=white ink1=red ink2=green ink3=blue
# duotone print on top of black illuminant=D65 substrate=black ink1=white ink1.black=white ink2=green debugwidth=48
illuminant=D65 substrate=black ink1=white ink1.black=white ink2=red debugwidth=48
These images represents recent advances in these experiments - the current working incarnation of the software is currently not publicly available. /pippin.