My client recently brought a print from Epson L800 dye inkjet printer, that had visible green tint in grayscale. I measured it with my i1Pro2 in M2 and M1 modes, but to my astonishment I noticed, that the sensor was reporting magentish tint (+2,5 a*). I came to the conclusion, that C and Y dye inks must exhibit some fluorescence, and the M1 simulation in i1Pro2 doesn't take into account the fluorescence of colorants.
Is anyone familiar with similar issues? Can you confirm my colorant fluorescence hypothesis? Did anyone had any luck with resolving such issue with a different sensor, like Konica-Minolta FD7, Barbieri SpectroPad, i1 iSis, or Spectrolino with D65 filter (I still should have one in basement)?