Application of flow field-flow fractionation (FlFFF) for size characterization of carbon black particles in ink

► Flow FFF was employed to analyze carbon black particles. ► Use of FL-70 as an additive to the carrier liquid resulted in the best elution profile. ► Carbon black was dispersed well with dispersants having hydrophobic content of 2-3 times higher than hydrophilic content. ► As the carbon black particle size decreased, the ink became clearer and glossier.