Aspectral-based8-inkcharacterizationmodelisdevelopedtoaccuratelypredicttherecipeforamulti-inkprinter.The8-inkcolorseparationmethodisaunionoffive3-inkandsix4-inkcombinationsbasedonthecellularYule-NielsenspectralNeugebauermodelwitharecipeselectionstrategy.Theperformancelevelsoftheforwardandbackwardmodelsareevaluatedforinpidualinkcombinationsusingprintedtestingsamples.Furthermore,thespectral-basedmethodperformsbettercomparedwiththeXYZ-basedapproach.Onthebasisofthebackwardmodelperformance,anovelfastrecipeselectionstrategyisproposedandestimated.